No choice...The guy sold the one that was on that top end...is there a master
link? That was one thing I was going to ask you.
----- Original Message -----
From: Dennis Hammerl
To: [email protected]
Sent: Friday, August 28, 2009 1:14 PM
Subject: [Nighthawk Lovers] Re: 83 cb650sc cam chain tensioner parts -
difficulty finding
You are going to use the chain on your bike ? It's a loop chain and
held in with the crankshaft.
--- On Fri, 8/28/09, Creative Residential Designs
<[email protected]> wrote:
From: Creative Residential Designs <[email protected]>
Subject: [Nighthawk Lovers] Re: 83 cb650sc cam chain tensioner parts
- difficulty finding
To: [email protected]
Date: Friday, August 28, 2009, 12:09 PM
Thanks for the info Dennis. I'll be putting my "new" top end on
next week. I bought it minus the chain so I needed to know this. I agree on
using a torque wrench too. I've made that mistake, I.E. breaking a bolt and it
SUCKS. I love my bike but these Japanese bolts just aren't as strong as good
ol' American steel. Paul...don't fret too much, just pay close attention, do
what Dennis says and get 'er done! If you have any doubts take photos as you
go. If you want to see what I've done on my Nighthawks or Harley go to the
Photobucket site and type in "HotrodMamma". I'm going to cut some gaskets for
my Nighthawk soon and will post a how-to. The cam cover gaskets are hard to get
and expensive. I can make one for $4.00 plus my time. I'm going to keep a
pattern for later too. HotrodMamma.
----- Original Message -----
From: Dennis Hammerl
To: [email protected]
Sent: Thursday, August 27, 2009 11:09 PM
Subject: [Nighthawk Lovers] Re: 83 cb650sc cam chain tensioner
parts - difficulty finding
Get a grip. Not all parts are updated at the same time.
Without my asking a counter person to check, I recall that there is only one
update spring and a couple of updates to the tensioner assy. You do or do not
have the OEM manual ? Not Clymers book of the dead or some such. Please take
the time to read the common service manual. All specific manuals are based on
the viewer having done this. Cam sprockets are marked with lines that are to be
in line with the head surface. Study the manual before disassembly and take pix
if needed. Do not play switch with any parts. Replace each part (tappet
adjusters, cam followers, cam journal caps, etc) in the EXACT place it came
from. Lay parts out in an orderly fashion in a place that will not be disturbed
by kids or pets. Do not introduce any new variables by a careless assembly. A
light dab of grease on the cam lobes willl do,a drop or two of oil on each
journal. Fill anti-foam chambers with oil. Before replacing the head cover,
remove the plugs (should be out already) and spin the engine over with the
starter. Repeat in short bursts untill oil is seen flowing.
You want tips ? Here's one. Some tech's have called me over
because the cam chain isn't long enough... duh. It did fit. What happens is
that it "drops" a link under the crankshaft. You will need to rotate the crank
a bit while holding the chain up and it will straighten out.
The possibility exists that you are a he-man. Use a torque
wrench on ALL fasteners. It's way too easy to strip the 6mm bolts that used
throughout. Start each one with fingers to make sure you don't strip any. Specs
are in the front section on the manual.
Service bulletins from that time are all on paper. Where ours
got to after all these years may be a chore to locate. Rob may have taken them
when he left. Just stop fretting about all this and be glad you can get parts.
The original (questionable) parts have disappeared. ONLY updated parts are
available. Honda bought back those many years ago.
I lied. I've only got 37 years with Honda. 42 total. First
with Suzuki and Yamaha.
Wanna' "degree in" the cams ? Makes 'em fly. Advanced
procedure, but big performance boost.
--- On Thu, 8/27/09, oldschoolgwin <[email protected]>
wrote:
From: oldschoolgwin <[email protected]>
Subject: [Nighthawk Lovers] Re: 83 cb650sc cam chain
tensioner parts - difficulty finding
To: "Nighthawk Motorcycle Lovers!"
<[email protected]>
Date: Thursday, August 27, 2009, 11:39 PM
Thanks Dennis.
Do you suspect the -010 tensioner bracket had the
modifications that
"improved" the tensioner from the original?
Do you now of a technical service bulletin addressing the
repair of
the failure. I think this may be valuable to those of us
with less
historical experience with the NH tensioner (42 years at
Honda - wow
that's more knowledge than i can imagine). I tried to find
a TSB on
the web but no luck.
Well i found a NOS spring (14514-ME5-010) at a Honda shop
in Ohio - it
should be here in a few days - at that time i'll remove the
tensioner
and measure spring force between the two springs (maybe
that will
prove hopefull if there is a large difference).
It doesn't sound too difficult when reading the OEM manual
but a bet
they leave a lot of the little tricks out. I guess just
think
everything well through before you do it. I think I'll
take a picture
of the cam sprocket allignment marks (with #1 at TDC
compression)
before the removal to ensure it is reset the same after
intall (that
part makes me a bit nervous!). The OEM manual was a bit
unclear of
what cam mark alligns with what part of the head surface.
And I won't
swap positions on any components.
Thanks,
Paul
Aug 26, 2:51 pm, Dennis Hammerl <[email protected]> wrote:
> Part sequence is .000 original, 010 first mod, 020 second
mod.
>
> --- On Wed, 8/26/09, oldschoolgwin
<[email protected]> wrote:
>
> From: oldschoolgwin <[email protected]>
> Subject: [Nighthawk Lovers] 83 cb650sc cam chain
tensioner parts - difficulty finding
> To: "Nighthawk Motorcycle Lovers!"
<[email protected]>
> Date: Wednesday, August 26, 2009, 3:18 PM
>
> Does anyone know where i can get the spring and tensioner
bracket
> from, most places show them on the part finder but they
are not in
> stocka and no longer made (at least by Honda).
>
> Spring: 14514-me5-010
> Bracket Tensioner: 14500-ME5-030
>
> I found a NOS bracket tensioner on Ebay but it is a -010.
So it went -.
> 01, -020, and the last is -030. I don't know if the -010
part is the
> original with the problems that required the upgrade to
the next part
> revision
>
> At minimum I need the tensioner spring or there isn't
much reason to
> take the bike apart. Yikes - no way to solve the chain
rattle?
>
> Thanks for the help.
>
> Paul
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