Re: [MBZ] loose 300SDL pistons

2008-06-09 Thread Peter Frederick
Assuming the block and head were clean when the gasket was installed  
(this is necessary, but not always done, eh?), and leak will leave  
carbon between the gasket and block or head surface.  That means any  
carbon or dirt tracks indicate leaks.  The stainless steel ring must  
contact only clean cast iron or aluminum -- marks between are leaks,  
as are dark areas on the stainless.  Oil between gasket and block/ 
head is also a sign of a blown gasket.  You will also have oily soot  
in #1.

Most common places on a 603 are the end cylinders (#1 and #6) into  
the chain case in front and into the bolt holes in the rear.  This is  
due to the lack of material beyond the bolts and resultant lower  
clamping pressure.  Second most common is between cylinders, notably  
#3 and #$ or #4 and #5.  This is probably due to higher heat in the  
middle of the engine causing more gasket crush.

Re-using head bolts is also a cause of gasket failure -- if they  
aren't elastic enough, the gasket will crush when hot, and leak when  
cold.  But the full set, it's cheaper than a new head gasket set to  
fix it next time in 1 miles.

One sign of coolant leaks is excessive glassy carbon buildup on head  
and piston top.  If yours just have loose carbon on them, you don't  
have any coolant leaks into the combustion chamber.

Note that you should clean the head completely, ditto the block,  
before re-assembly. DO NOT, UNDER ANY CIRCUMSTANCES use Scotchbrite  
pads -- they shed grit and it will eat the rings in about 1000  
miles.  Brass brush works great.  If you clean the pistons and head  
completely, you will be greeted, when you get it together and  
started, by horrible metallic clanking from combustion quench and re- 
ignition, so if you can get the sealing surfaces clean without  
cleaning the piston crowns and combustion area on the head, leave  
them sooty!  The noise goes away in a few hundred miles, but is  
rather un-nerving before that.

Peter


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Re: [MBZ] loose 300SDL pistons

2008-06-09 Thread pm7088
You caught it early, a good thing.  They have been known to hydolock #1, a very 
bad thing!

Pete

 -- Original message --
From: "OK Don" <[EMAIL PROTECTED]>
> What does a blown head gasket look like? Ours just looks very oily
> between #1 and the chain case, not burnt, no obvious damage to the
> gasket.
> 
> On Tue, Apr 8, 2008 at 10:11 AM, Peter Frederick <[EMAIL PROTECTED]> wrote:
> > Usual cause is a blown head gasket oil passage between #1 and the
> > chain case --
> 
> -- 
> OK Don, KD5NRO
> Norman, OK
> "There are three kinds of lies: lies, damn lies, and statistics."
> -Benjamin Disraeli and/or Mark Twain
> '90 300D (Rattled), '92 300D (Saber), ' '81 240D (Gramps), '97 Ply
> Grand Voyager (Vincent van-go)
> 
> ___
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Re: [MBZ] loose 300SDL pistons

2008-06-09 Thread OK Don
What does a blown head gasket look like? Ours just looks very oily
between #1 and the chain case, not burnt, no obvious damage to the
gasket.

On Tue, Apr 8, 2008 at 10:11 AM, Peter Frederick <[EMAIL PROTECTED]> wrote:
> Usual cause is a blown head gasket oil passage between #1 and the
> chain case --

-- 
OK Don, KD5NRO
Norman, OK
"There are three kinds of lies: lies, damn lies, and statistics."
-Benjamin Disraeli and/or Mark Twain
'90 300D (Rattled), '92 300D (Saber), ' '81 240D (Gramps), '97 Ply
Grand Voyager (Vincent van-go)

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Re: [MBZ] loose 300SDL pistons

2008-06-08 Thread Peter Frederick
Usual cause is a blown head gasket oil passage between #1 and the  
chain case -- enough oil in there, it hydrolocks and bends #1.  Not  
fun, and my brother just escaped this fate recently when an exhaust  
stud broke and we ended up taking the head off his SDL to fix it --  
oil leaking into #1.

There has also been some discussion that the sludge in the intake  
from using dino oil with the EGR connected can cause hydrolock or  
piston/head interference, too.

Nothing like the 3.5L, which dies at low milage in normal use!

Peter

On Apr 7, 2008, at 8:21 PM, Kaleb C. Striplin wrote:

> I have never in my life heard that before, only about the 3.5's
>
> Peter Frederick wrote:
>> ALL 603's a subject to bent rods, but the 3.5L is the worst.  I've
>> hear of a couple in the local area --usually #1.
>>
>> You need to use a dial indicator to check actual clearance, but wear
>> limit is 0.002".
>>
>> Peter
>>
>>
>> ___
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>>
>
> -- 
> Kaleb C. Striplin/Claremore, OK
>   94 E420, 92 300SD, 92 300D, 92 250D Turbo, 92 300E 4Matic,
>   91 300D, 90 420SEL, 89 560SEL, 89 260E, 87 300SDL, 85 380SE 5.0  
> Euro,
>   84 190D, 84 300D euro manny, 81 240D, 81 380SLC, 80 240D, 76 240D,
>   76 300D, 72 250C, 69 250
> http://www.okiebenz.com
>
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Re: [MBZ] loose 300SDL pistons

2008-04-07 Thread Kaleb C. Striplin
I have never in my life heard that before, only about the 3.5's

Peter Frederick wrote:
> ALL 603's a subject to bent rods, but the 3.5L is the worst.  I've  
> hear of a couple in the local area --usually #1.
> 
> You need to use a dial indicator to check actual clearance, but wear  
> limit is 0.002".
> 
> Peter
> 
> 
> ___
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-- 
Kaleb C. Striplin/Claremore, OK
  94 E420, 92 300SD, 92 300D, 92 250D Turbo, 92 300E 4Matic,
  91 300D, 90 420SEL, 89 560SEL, 89 260E, 87 300SDL, 85 380SE 5.0 Euro,
  84 190D, 84 300D euro manny, 81 240D, 81 380SLC, 80 240D, 76 240D,
  76 300D, 72 250C, 69 250
http://www.okiebenz.com

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Re: [MBZ] loose 300SDL pistons

2008-04-07 Thread Peter Frederick
ALL 603's a subject to bent rods, but the 3.5L is the worst.  I've  
hear of a couple in the local area --usually #1.

You need to use a dial indicator to check actual clearance, but wear  
limit is 0.002".

Peter


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Re: [MBZ] loose 300SDL pistons

2008-04-07 Thread Kaleb C. Striplin
I have a couple of heads that have those small cracks between the 
valves.  These are not the problem when they say a cracked #14 head?

[EMAIL PROTECTED] wrote:
> Kaleb,
> 
> MB diesels are designed to run a very tight piston fit, less than 0.002".? 
> You would be hard pressed to feel, let alone see, 0.002" movement.? 
> Overheating, or very high mileage would be the likely causes of piston slop.? 
> I think you should replace the engine with your spare.
> 
> Cracks between the valve seats are quite common and usually do not leak 
> water.? A sign that water was?leaking into?a cylinder would be a steam 
> cleaned look.
> 
> Jim in Phoenix
> 
> 
> 
> -Original Message-
> From: Kaleb C. Striplin <[EMAIL PROTECTED]>
> To: mercedes Mailing List 
> Sent: Sun, 6 Apr 2008 3:55 pm
> Subject: [MBZ] loose 300SDL pistons
> 
> 
> 
> So I have this 300SDL I picked up a while back.  The guy who had it 
> bought it from a list member from another list.  Drove it back somewhere 
> in the NE back to OK.  Anyway, he says IIRC after a while of driving he 
> couldnt keep oil in it.  Not sure where it was going but thats what he 
> said. It broke down and he had ot have it towed back to OK.  Took it to 
> a local shop and I know they ran a compression test on it but Im not 
> sure what the numbers where.  They pulled the head and I think they said 
> it was warped.  They also said the engine needs to be rebuilt because 
> you could move one of the pistons back and forth in its bore.  The head 
> is sitting on the engine but not installed.  Today I looked at it for a 
> minute and the head does have a couple of cracks between a couple of 
> cylinders valves.  #1 piston is at TDC and I can move it back and forth 
> very slightly.  I cant tell you how much but its a little loose.  #6 is 
> also at TDC or close to it, and I can move it a little but its quite a 
> bit tighter than #1.  The others I cant move, they are down in their bore.
> 
> So the question is, should this piston be able to be moved at all? 
> Given this info and what the PO says happened, would I be better off 
> just yanking the engine and dropping in another?  That is what I am 
> leaning towards.

-- 
Kaleb C. Striplin/Claremore, OK
  94 E420, 92 300SD, 92 300D, 92 250D Turbo, 92 300E 4Matic,
  91 300D, 90 420SEL, 89 560SEL, 89 260E, 87 300SDL, 85 380SE 5.0 Euro,
  84 190D, 84 300D euro manny, 81 240D, 81 380SLC, 80 240D, 76 240D,
  76 300D, 72 250C, 69 250
http://www.okiebenz.com

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Re: [MBZ] loose 300SDL pistons

2008-04-07 Thread Kaleb C. Striplin
I have a spare 603 so there really is not a problem there.  Will 
probably do a swap then rebuild this block later.

LWB250 wrote:
> Kaleb,
> 
> There is always going to be some "slop" in the piston
> fit in the bore, even in a new engine.  There has got
> to be room for the piston to expand as it heats up,
> hence the need for the rings - otherwise you could
> count on the piston to seal on it's own.
> 
> The big question is how much slop is there, and how do
> you measure it?
> 
> About the only definitive way to do this is to remove
> a piston, get a set of micrometers and/or calipers and
> measure both the cylinder bore and piston diameter and
> compare them to the specs.  Also, when you measure the
> bore, you have to do it in several places throughout
> to determine if it's tapered, egg-shaped, or otherwise
> out of round.
> 
> Based on the fact that the head is cacked, I would
> assume that the pistons are probably affected as well.
>  Also, by checking the consistency of wear across all
> cylinders, one would expect the wear or clearances to
> be identical, or at least, very close to each other. 
> It doesn't sound like this is the case, another reason
> to suspect the possibility of extreme wear or possible
> damage.
> 
> I have no knowledge of this engine in particular, but
> what I do know from direct experience with both diesel
> and gas engines I would say you should probably go
> through this thing unless you're looking for an "Okie
> rebuild", that is, just slapping a repaired head on
> the engine and driving off.
> 
> Dan
> 
> 
>>> So I have this 300SDL I picked up a while back. 
>> The guy who had it
>>> bought it from a list member from another list. 
>> Drove it back somewhere
>>> in the NE back to OK.  Anyway, he says IIRC after
>> a while of driving he
>>> couldnt keep oil in it.  Not sure where it was
>> going but thats what he
>>> said. It broke down and he had ot have it towed
>> back to OK.  Took it to
>>> a local shop and I know they ran a compression
>> test on it but Im not
>>> sure what the numbers where.  They pulled the head
>> and I think they said
>>> it was warped.  They also said the engine needs to
>> be rebuilt because
>>> you could move one of the pistons back and forth
>> in its bore.  The head
>>> is sitting on the engine but not installed.  Today
>> I looked at it for a
>>> minute and the head does have a couple of cracks
>> between a couple of
>>> cylinders valves.  #1 piston is at TDC and I can
>> move it back and forth
>>> very slightly.  I cant tell you how much but its a
>> little loose.  #6 is
>>> also at TDC or close to it, and I can move it a
>> little but its quite a
>>> bit tighter than #1.  The others I cant move, they
>> are down in their bore.
>>> So the question is, should this piston be able to
>> be moved at all?
>>> Given this info and what the PO says happened,
>> would I be better off
>>> just yanking the engine and dropping in another? 
>> That is what I am
>>> leaning towards.
>>
>>
>> -- 
>> Luther   KB5QHUAlma, Ark
>> '87 300SDL (272,xxx mi) head case
>> '85 Ford F250 6.9 diesel (x58,xxx mi)
>> '82 300CD (166 kmi)
>> '82 300D  (74 kmi) getting donor engine-sold
>> '85 300D (280,176) parts car sans engine
>>
>> ___
>> http://www.okiebenz.com
>> For new parts see official list sponsor:
>> http://www.buymbparts.com/
>> For used parts email [EMAIL PROTECTED]
>>
>> To Unsubscribe or change delivery options go to:
>>
> http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
> 
> 
> 
>   
> 
> You rock. That's why Blockbuster's offering you one month of Blockbuster 
> Total Access, No Cost.  
> http://tc.deals.yahoo.com/tc/blockbuster/text5.com
> 
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> 

-- 
Kaleb C. Striplin/Claremore, OK
  94 E420, 92 300SD, 92 300D, 92 250D Turbo, 92 300E 4Matic,
  91 300D, 90 420SEL, 89 560SEL, 89 260E, 87 300SDL, 85 380SE 5.0 Euro,
  84 190D, 84 300D euro manny, 81 240D, 81 380SLC, 80 240D, 76 240D,
  76 300D, 72 250C, 69 250
http://www.okiebenz.com

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Re: [MBZ] loose 300SDL pistons

2008-04-07 Thread Kaleb C. Striplin
haha

Luther wrote:
> I've got $500 here waiting for you to deliver it to my door
> 
> Luther
> 
> On Sun, 06 Apr 2008 17:55:40 -0500, Kaleb C. Striplin <[EMAIL PROTECTED]> 
> wrote:
> 
>> So I have this 300SDL I picked up a while back.  The guy who had it
>> bought it from a list member from another list.  Drove it back somewhere
>> in the NE back to OK.  Anyway, he says IIRC after a while of driving he
>> couldnt keep oil in it.  Not sure where it was going but thats what he
>> said. It broke down and he had ot have it towed back to OK.  Took it to
>> a local shop and I know they ran a compression test on it but Im not
>> sure what the numbers where.  They pulled the head and I think they said
>> it was warped.  They also said the engine needs to be rebuilt because
>> you could move one of the pistons back and forth in its bore.  The head
>> is sitting on the engine but not installed.  Today I looked at it for a
>> minute and the head does have a couple of cracks between a couple of
>> cylinders valves.  #1 piston is at TDC and I can move it back and forth
>> very slightly.  I cant tell you how much but its a little loose.  #6 is
>> also at TDC or close to it, and I can move it a little but its quite a
>> bit tighter than #1.  The others I cant move, they are down in their bore.
>>
>> So the question is, should this piston be able to be moved at all?
>> Given this info and what the PO says happened, would I be better off
>> just yanking the engine and dropping in another?  That is what I am
>> leaning towards.
> 
> 
> 

-- 
Kaleb C. Striplin/Claremore, OK
  94 E420, 92 300SD, 92 300D, 92 250D Turbo, 92 300E 4Matic,
  91 300D, 90 420SEL, 89 560SEL, 89 260E, 87 300SDL, 85 380SE 5.0 Euro,
  84 190D, 84 300D euro manny, 81 240D, 81 380SLC, 80 240D, 76 240D,
  76 300D, 72 250C, 69 250
http://www.okiebenz.com

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Re: [MBZ] loose 300SDL pistons

2008-04-07 Thread LarryT
You wrote - <>

The amazing thing is how many engines continue to run for many miles when
slapped together like this -
course, other put together similarily fail quickly. ;-\

Larry T (66 MGB, 74 911, 91 300D)
www.youroil.net for Oil Analysis and Weber Parts
Test Results http://members.rennlist.com/oil
PORSCHE POSTERS!  youroil.net
800-583-8601
Weber Carb Info http://members.rennlist.com/webercarbs



- Original Message - 
From: "LWB250" <[EMAIL PROTECTED]>
To: "Mercedes Discussion List" 
Sent: Monday, April 07, 2008 12:18 PM
Subject: Re: [MBZ] loose 300SDL pistons


> Kaleb,
>
> There is always going to be some "slop" in the piston
> fit in the bore, even in a new engine.  There has got
> to be room for the piston to expand as it heats up,
> hence the need for the rings - otherwise you could
> count on the piston to seal on it's own.
>
> The big question is how much slop is there, and how do
> you measure it?
>
> About the only definitive way to do this is to remove
> a piston, get a set of micrometers and/or calipers and
> measure both the cylinder bore and piston diameter and
> compare them to the specs.  Also, when you measure the
> bore, you have to do it in several places throughout
> to determine if it's tapered, egg-shaped, or otherwise
> out of round.
>
> Based on the fact that the head is cacked, I would
> assume that the pistons are probably affected as well.
> Also, by checking the consistency of wear across all
> cylinders, one would expect the wear or clearances to
> be identical, or at least, very close to each other.
> It doesn't sound like this is the case, another reason
> to suspect the possibility of extreme wear or possible
> damage.
>
> I have no knowledge of this engine in particular, but
> what I do know from direct experience with both diesel
> and gas engines I would say you should probably go
> through this thing unless you're looking for an "Okie
> rebuild", that is, just slapping a repaired head on
> the engine and driving off.
>
> Dan
>
>
>> > So I have this 300SDL I picked up a while back.
>> The guy who had it
>> > bought it from a list member from another list.
>> Drove it back somewhere
>> > in the NE back to OK.  Anyway, he says IIRC after
>> a while of driving he
>> > couldnt keep oil in it.  Not sure where it was
>> going but thats what he
>> > said. It broke down and he had ot have it towed
>> back to OK.  Took it to
>> > a local shop and I know they ran a compression
>> test on it but Im not
>> > sure what the numbers where.  They pulled the head
>> and I think they said
>> > it was warped.  They also said the engine needs to
>> be rebuilt because
>> > you could move one of the pistons back and forth
>> in its bore.  The head
>> > is sitting on the engine but not installed.  Today
>> I looked at it for a
>> > minute and the head does have a couple of cracks
>> between a couple of
>> > cylinders valves.  #1 piston is at TDC and I can
>> move it back and forth
>> > very slightly.  I cant tell you how much but its a
>> little loose.  #6 is
>> > also at TDC or close to it, and I can move it a
>> little but its quite a
>> > bit tighter than #1.  The others I cant move, they
>> are down in their bore.
>> >
>> > So the question is, should this piston be able to
>> be moved at all?
>> > Given this info and what the PO says happened,
>> would I be better off
>> > just yanking the engine and dropping in another?
>> That is what I am
>> > leaning towards.
>>
>>
>>
>> -- 
>> Luther   KB5QHUAlma, Ark
>> '87 300SDL (272,xxx mi) head case
>> '85 Ford F250 6.9 diesel (x58,xxx mi)
>> '82 300CD (166 kmi)
>> '82 300D  (74 kmi) getting donor engine-sold
>> '85 300D (280,176) parts car sans engine
>>
>> ___
>> http://www.okiebenz.com
>> For new parts see official list sponsor:
>> http://www.buymbparts.com/
>> For used parts email [EMAIL PROTECTED]
>>
>> To Unsubscribe or change delivery options go to:
>>
> http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
>>
>
>
>
> 
> 
> You rock. That's why Blockbuster's offering you one month of Blockbuster 
> Total Access, No Cost.
> http://tc.deals.yahoo.com/tc/blockbuster/text5.com
>
> ___
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> To Unsubscribe or change delivery options go to:
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Re: [MBZ] loose 300SDL pistons

2008-04-07 Thread jfreezn
Kaleb,

MB diesels are designed to run a very tight piston fit, less than 0.002".? You 
would be hard pressed to feel, let alone see, 0.002" movement.? Overheating, or 
very high mileage would be the likely causes of piston slop.? I think you 
should replace the engine with your spare.

Cracks between the valve seats are quite common and usually do not leak water.? 
A sign that water was?leaking into?a cylinder would be a steam cleaned look.

Jim in Phoenix



-Original Message-
From: Kaleb C. Striplin <[EMAIL PROTECTED]>
To: mercedes Mailing List 
Sent: Sun, 6 Apr 2008 3:55 pm
Subject: [MBZ] loose 300SDL pistons



So I have this 300SDL I picked up a while back.  The guy who had it 
bought it from a list member from another list.  Drove it back somewhere 
in the NE back to OK.  Anyway, he says IIRC after a while of driving he 
couldnt keep oil in it.  Not sure where it was going but thats what he 
said. It broke down and he had ot have it towed back to OK.  Took it to 
a local shop and I know they ran a compression test on it but Im not 
sure what the numbers where.  They pulled the head and I think they said 
it was warped.  They also said the engine needs to be rebuilt because 
you could move one of the pistons back and forth in its bore.  The head 
is sitting on the engine but not installed.  Today I looked at it for a 
minute and the head does have a couple of cracks between a couple of 
cylinders valves.  #1 piston is at TDC and I can move it back and forth 
very slightly.  I cant tell you how much but its a little loose.  #6 is 
also at TDC or close to it, and I can move it a little but its quite a 
bit tighter than #1.  The others I cant move, they are down in their bore.

So the question is, should this piston be able to be moved at all? 
Given this info and what the PO says happened, would I be better off 
just yanking the engine and dropping in another?  That is what I am 
leaning towards.
-- 
Kaleb C. Striplin/Claremore, OK
  94 E420, 92 300SD, 92 300D, 92 250D Turbo, 92 300E 4Matic,
  91 300D, 90 420SEL, 89 560SEL, 89 260E, 87 300SDL, 85 380SE 5.0 Euro,
  84 190D, 84 300D euro manny, 81 240D, 81 380SLC, 80 240D, 76 240D,
  76 300D, 72 250C, 69 250
http://www.okiebenz.com

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Re: [MBZ] loose 300SDL pistons

2008-04-07 Thread LWB250
Kaleb,

There is always going to be some "slop" in the piston
fit in the bore, even in a new engine.  There has got
to be room for the piston to expand as it heats up,
hence the need for the rings - otherwise you could
count on the piston to seal on it's own.

The big question is how much slop is there, and how do
you measure it?

About the only definitive way to do this is to remove
a piston, get a set of micrometers and/or calipers and
measure both the cylinder bore and piston diameter and
compare them to the specs.  Also, when you measure the
bore, you have to do it in several places throughout
to determine if it's tapered, egg-shaped, or otherwise
out of round.

Based on the fact that the head is cacked, I would
assume that the pistons are probably affected as well.
 Also, by checking the consistency of wear across all
cylinders, one would expect the wear or clearances to
be identical, or at least, very close to each other. 
It doesn't sound like this is the case, another reason
to suspect the possibility of extreme wear or possible
damage.

I have no knowledge of this engine in particular, but
what I do know from direct experience with both diesel
and gas engines I would say you should probably go
through this thing unless you're looking for an "Okie
rebuild", that is, just slapping a repaired head on
the engine and driving off.

Dan


> > So I have this 300SDL I picked up a while back. 
> The guy who had it
> > bought it from a list member from another list. 
> Drove it back somewhere
> > in the NE back to OK.  Anyway, he says IIRC after
> a while of driving he
> > couldnt keep oil in it.  Not sure where it was
> going but thats what he
> > said. It broke down and he had ot have it towed
> back to OK.  Took it to
> > a local shop and I know they ran a compression
> test on it but Im not
> > sure what the numbers where.  They pulled the head
> and I think they said
> > it was warped.  They also said the engine needs to
> be rebuilt because
> > you could move one of the pistons back and forth
> in its bore.  The head
> > is sitting on the engine but not installed.  Today
> I looked at it for a
> > minute and the head does have a couple of cracks
> between a couple of
> > cylinders valves.  #1 piston is at TDC and I can
> move it back and forth
> > very slightly.  I cant tell you how much but its a
> little loose.  #6 is
> > also at TDC or close to it, and I can move it a
> little but its quite a
> > bit tighter than #1.  The others I cant move, they
> are down in their bore.
> >
> > So the question is, should this piston be able to
> be moved at all?
> > Given this info and what the PO says happened,
> would I be better off
> > just yanking the engine and dropping in another? 
> That is what I am
> > leaning towards.
> 
> 
> 
> -- 
> Luther   KB5QHUAlma, Ark
> '87 300SDL (272,xxx mi) head case
> '85 Ford F250 6.9 diesel (x58,xxx mi)
> '82 300CD (166 kmi)
> '82 300D  (74 kmi) getting donor engine-sold
> '85 300D (280,176) parts car sans engine
> 
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Re: [MBZ] loose 300SDL pistons

2008-04-07 Thread Luther
I've got $500 here waiting for you to deliver it to my door

Luther

On Sun, 06 Apr 2008 17:55:40 -0500, Kaleb C. Striplin <[EMAIL PROTECTED]> wrote:

> So I have this 300SDL I picked up a while back.  The guy who had it
> bought it from a list member from another list.  Drove it back somewhere
> in the NE back to OK.  Anyway, he says IIRC after a while of driving he
> couldnt keep oil in it.  Not sure where it was going but thats what he
> said. It broke down and he had ot have it towed back to OK.  Took it to
> a local shop and I know they ran a compression test on it but Im not
> sure what the numbers where.  They pulled the head and I think they said
> it was warped.  They also said the engine needs to be rebuilt because
> you could move one of the pistons back and forth in its bore.  The head
> is sitting on the engine but not installed.  Today I looked at it for a
> minute and the head does have a couple of cracks between a couple of
> cylinders valves.  #1 piston is at TDC and I can move it back and forth
> very slightly.  I cant tell you how much but its a little loose.  #6 is
> also at TDC or close to it, and I can move it a little but its quite a
> bit tighter than #1.  The others I cant move, they are down in their bore.
>
> So the question is, should this piston be able to be moved at all?
> Given this info and what the PO says happened, would I be better off
> just yanking the engine and dropping in another?  That is what I am
> leaning towards.



-- 
Luther   KB5QHUAlma, Ark
'87 300SDL (272,xxx mi) head case
'85 Ford F250 6.9 diesel (x58,xxx mi)
'82 300CD (166 kmi)
'82 300D  (74 kmi) getting donor engine-sold
'85 300D (280,176) parts car sans engine

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Re: [MBZ] loose 300SDL pistons

2008-04-06 Thread Mitch Haley
"Kaleb C. Striplin" wrote:
> 
> yea thats what Im thinking.  Dont know about the rod bender thing, will
> have to look at the block number

Sounds more like it was run low on oil until it wouldn't make compression.

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Re: [MBZ] loose 300SDL pistons

2008-04-06 Thread Kaleb C. Striplin
yea thats what Im thinking.  Dont know about the rod bender thing, will 
have to look at the block number

OK Don wrote:
> I don't remember ever being able to wiggle a piston in the bore --
> sounds toast to me. Could someone have swapped in a rod-bender engine?
>  By the time you've put the money of a new head on it, and find out
> it's still toast, you won't be a happy camper.
> Swap in a new engine.
> 
> On Sun, Apr 6, 2008 at 5:55 PM, Kaleb C. Striplin <[EMAIL PROTECTED]> wrote:
>> So I have this 300SDL I picked up a while back.  The guy who had it
>>  bought it from a list member from another list.  Drove it back somewhere
>>  in the NE back to OK.  Anyway, he says IIRC after a while of driving he
>>  couldnt keep oil in it.  Not sure where it was going but thats what he
>>  said. It broke down and he had ot have it towed back to OK.  Took it to
>>  a local shop and I know they ran a compression test on it but Im not
>>  sure what the numbers where.  They pulled the head and I think they said
>>  it was warped.  They also said the engine needs to be rebuilt because
>>  you could move one of the pistons back and forth in its bore.  The head
>>  is sitting on the engine but not installed.  Today I looked at it for a
>>  minute and the head does have a couple of cracks between a couple of
>>  cylinders valves.  #1 piston is at TDC and I can move it back and forth
>>  very slightly.  I cant tell you how much but its a little loose.  #6 is
>>  also at TDC or close to it, and I can move it a little but its quite a
>>  bit tighter than #1.  The others I cant move, they are down in their bore.
>>
>>  So the question is, should this piston be able to be moved at all?
>>  Given this info and what the PO says happened, would I be better off
>>  just yanking the engine and dropping in another?  That is what I am
>>  leaning towards.
>>  --
>>

-- 
Kaleb C. Striplin/Claremore, OK
  94 E420, 92 300SD, 92 300D, 92 250D Turbo, 92 300E 4Matic,
  91 300D, 90 420SEL, 89 560SEL, 89 260E, 87 300SDL, 85 380SE 5.0 Euro,
  84 190D, 84 300D euro manny, 81 240D, 81 380SLC, 80 240D, 76 240D,
  76 300D, 72 250C, 69 250
http://www.okiebenz.com

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Re: [MBZ] loose 300SDL pistons

2008-04-06 Thread OK Don
I don't remember ever being able to wiggle a piston in the bore --
sounds toast to me. Could someone have swapped in a rod-bender engine?
 By the time you've put the money of a new head on it, and find out
it's still toast, you won't be a happy camper.
Swap in a new engine.

On Sun, Apr 6, 2008 at 5:55 PM, Kaleb C. Striplin <[EMAIL PROTECTED]> wrote:
> So I have this 300SDL I picked up a while back.  The guy who had it
>  bought it from a list member from another list.  Drove it back somewhere
>  in the NE back to OK.  Anyway, he says IIRC after a while of driving he
>  couldnt keep oil in it.  Not sure where it was going but thats what he
>  said. It broke down and he had ot have it towed back to OK.  Took it to
>  a local shop and I know they ran a compression test on it but Im not
>  sure what the numbers where.  They pulled the head and I think they said
>  it was warped.  They also said the engine needs to be rebuilt because
>  you could move one of the pistons back and forth in its bore.  The head
>  is sitting on the engine but not installed.  Today I looked at it for a
>  minute and the head does have a couple of cracks between a couple of
>  cylinders valves.  #1 piston is at TDC and I can move it back and forth
>  very slightly.  I cant tell you how much but its a little loose.  #6 is
>  also at TDC or close to it, and I can move it a little but its quite a
>  bit tighter than #1.  The others I cant move, they are down in their bore.
>
>  So the question is, should this piston be able to be moved at all?
>  Given this info and what the PO says happened, would I be better off
>  just yanking the engine and dropping in another?  That is what I am
>  leaning towards.
>  --
>
-- 
OK Don, KD5NRO
Norman, OK
"There are three kinds of lies: lies, damn lies, and statistics."
-Benjamin Disraeli and/or Mark Twain
'90 300D, '87 300SDL, '81 240D, '78 450SLC, '97 Ply Grand Voyager

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[MBZ] loose 300SDL pistons

2008-04-06 Thread Kaleb C. Striplin
So I have this 300SDL I picked up a while back.  The guy who had it 
bought it from a list member from another list.  Drove it back somewhere 
in the NE back to OK.  Anyway, he says IIRC after a while of driving he 
couldnt keep oil in it.  Not sure where it was going but thats what he 
said. It broke down and he had ot have it towed back to OK.  Took it to 
a local shop and I know they ran a compression test on it but Im not 
sure what the numbers where.  They pulled the head and I think they said 
it was warped.  They also said the engine needs to be rebuilt because 
you could move one of the pistons back and forth in its bore.  The head 
is sitting on the engine but not installed.  Today I looked at it for a 
minute and the head does have a couple of cracks between a couple of 
cylinders valves.  #1 piston is at TDC and I can move it back and forth 
very slightly.  I cant tell you how much but its a little loose.  #6 is 
also at TDC or close to it, and I can move it a little but its quite a 
bit tighter than #1.  The others I cant move, they are down in their bore.

So the question is, should this piston be able to be moved at all? 
Given this info and what the PO says happened, would I be better off 
just yanking the engine and dropping in another?  That is what I am 
leaning towards.
-- 
Kaleb C. Striplin/Claremore, OK
  94 E420, 92 300SD, 92 300D, 92 250D Turbo, 92 300E 4Matic,
  91 300D, 90 420SEL, 89 560SEL, 89 260E, 87 300SDL, 85 380SE 5.0 Euro,
  84 190D, 84 300D euro manny, 81 240D, 81 380SLC, 80 240D, 76 240D,
  76 300D, 72 250C, 69 250
http://www.okiebenz.com

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