Tim,
Thanks for your comments it's interesting to hear from another stroker
owner. Is the bottom end totally stock? If so then 6500rpm is a reasonable
redline for such a torquey engine! This would be the advantage of using the
20mm taller Z24 block and 165mm Z24 rods over L20b gear. Do you know if the
redline set to this because of the injectors leaning out or for precaution
against motor damage? How's the fuel consumption now? Sorry about all the
questions, I wanted to get information from a real motor rather than working
on theory!
Cheers,
- Tom
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Tim Albany
Sent: Thursday, 13 April 2000 12:12 AM
To: [EMAIL PROTECTED]
Subject: RE: [LZ24, Tom Richardson - David Thompson]
sorry to butt in I was just ready your email about your LZ24 motor,in
my datto I have a modified z24 block (how modified i forget,going
back two years) and is attached to a highly modifed 20b head.The
speedo just clicked over 11,000 miles and it was brought s/h of a
friend
which used to be in a off road competition buggy and I just fitted
straight up to my datsun. When I fist brought it i rigged up twin
su's off a 4.2 liter jag but I couldn't afford the fuel bills so
about a year or so ago I got set up with fuel injection and the
computers cut off is at 6,500 rpm and I generally spin it up to 6,000
rpm in 1st 2nd 3rd, and once in forth 120mph (so i don't do it much)
and it spins up really easy and loves it around 4000, 4500 rpm. the
only problems have been 1 cooked h/d 8"'clutch and pressure plate and
flywheel, and a now very tired 3:5 diff. It was dynoed but the shop
said there machine didn't do charts but said the rear wheel horse was
around 130- 140hp> my efi system is off a 180b jap import motor
fitted up with vg30 throttle body and a (link) management system.
>David,
>
>Thanks for the update. I've been considering building a Z22 based motor
but
>I'm concerned that I'll lose the top end due to the reduced rod/stroke and
>bore/stroke ratios. I like torquey motors as much as the next guy but my
>motor needs to have strength above 5000rpm. If you get any dyno charts
made
>up I'd be most interested to see the power and torque curves when a free
>flowing induction system is used (as I'm sure everybody else would be
too!).
>What type of EFI system are you going to be running it with?
>
>Cheers
>
>- Tom
>
>-----Original Message-----
>From: [EMAIL PROTECTED]
>[mailto:[EMAIL PROTECTED]]On Behalf Of David Thompson
>Sent: Friday, 13 April 2001 12:53 AM
>To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
>Subject: Re: [LZ24, Tom Richardson - David Thompson]
>
>
>Tom,
>the LZ24 is going well. It's done 700 miles now - almost run in. Although I
>have a custom EFI to fit, I wanted to run it in using a carb, so that it
did
>not get over-revved at the dyno shop. I understand that it wont rev out as
>fast as a standard stroke engine, but the torque should compensate.
>I used a z24 crank and 89mm pistons (re-sleived)with l20 rods. The l20 rods
>have been modified to suit full floating pistons, and so a bearing has been
>inserted at the small end of the rod. When this was done, the bearing was
>inserted lower than standard height, efectivley decreasing the rod length
by
>a
>couple of mm. Also, pergeot v6 pistons were sourced and the dome machined
>off
>the top to produce a 10.4 cr with a 2mm copper head gasket and re-shaped
>combustion chambers. To compensate for the inability to rev out as fast as
>usual, I lightened the flywheel and used the full floating pstons.
>Since I'm using a bluebird carb on an old 180b manifold, (very small port
>diameter relative to the head) the engine struggles to get enough fuel to
>breath properly. That said, the engine is very strong, and has already
>broken
>2 diffs!
>Regards,
>David Thompson.
>
>"Tom Richardson" <[EMAIL PROTECTED]> wrote:
>David,
>
>If you're still about, hows the LZ24 going? I'm keen to find out how it
>goes and how much it revs out!
>
>Cheers
>
>- Tom
>
>
>
>____________________________________________________________________
>Get free email and a permanent address at http://www.netaddress.com/?N=1
>
>
--membersozdat-------------------------------------------------------
OZDAT Mailing List Please Note:-
Send (un)subscribe requests to [EMAIL PROTECTED]
Send submissions to [EMAIL PROTECTED]
No unauthorised redistribution of this email
http://www.ozdat.com/ozdatonline/index.htm
http://www.ozdat.com/ozdatonline/listindex.html
http://www.mail-archive.com/[email protected]/
---------------------------------------------------------------------
