z24 code

[TK]

Only the pre-85's (and carb) have the smaller crank journals.

The 3.4L upgrade requires the block to be drilled to move the starter to the
other side and some minor block grinding depending on the trans.

----- Original Message -----
From: Mike Rolica <mrolica at meridian-mag.com>
To: <gmecm at efi332.eng.ohio-state.edu>
Sent: Thursday, December 16, 1999 5:16 AM
Subject: RE: z24 code


> Have you looked into a gm replacement 3.4l long block:  2.8 suck rocks,
> small mains, bad rods ect.  A 3.4 would be a direct bolt in.  So if you
are
> going to do any computer mods, might as well do it with a 3.4 ;0)
> Mike Rolica
> Meridian Magnesium Products
> Strathroy, Ont
> Ext. 260
>
>
> -----Original Message-----
> From: Rodney Fulk [SMTP:elixir at pathwaynet.com]
> Sent: Wednesday, December 15, 1999 11:18 PM
> To: gmecm at efi332.eng.ohio-state.edu
> Subject: Re: z24 code
>
> Not sure if the worn out A/C compressor had anything to do with it
> but...
> (Had shavings on the frame below it.. And the A/C doesnt work..)
> I was on a trip to detroit and had to stop due to a gravel truck
> being
> turned over.
> It was close to 100 degrees that day and I noticed a puddle under my
> car..
> Water pump was toast..
> Heated up the motor..
> To make a long story short... After I replaced the water pump the
> car would
> overheat after I shut it off..
> A mechanic looked at it and told me it wasnt worth fixing. But
> didn't tell
> me what was wrong with it.
> The ONLY symptom was as soon as I turned it off it would overheat
> and water
> would come out of the
> over flow tube.
> While running it would be fine...
> Has 128,000 miles on it..
> Another mechanic said "Well heck, maybe the thermostat is stuck.".
> So I attempted to change the thermostat...
> Ended up breaking one of the bolts off in the intake..
> And it has sat everysince...
> Block is probly ok..
> Probly just needs a head gasket.
> But if I have it apart anyhow I will likely build it up... ;)
> Would be nice to be able to reprogram the computer it has for the
> upgrades
> but doesnt look like it will be simple to do..
>
> ----- Original Message -----
> From: <dhardin at ovec.com>
> To: <gmecm at efi332.eng.ohio-state.edu>
> Sent: Wednesday, December 15, 1999 7:32 AM
> Subject: Re: z24 code
>
>
> > I believe that you are correct.  The ARDC code should work in the
> 89.  The
> 89
> > however may of had some tuning changes etc and that is why the
> ardc was
> not used
> > that year. I believe that both years use the 730 computer.  Mine
> runs
> really
> > well.
> > BTW ....what happened to the 2.8?  Its pretty hard to kill one.
> They run
> great.
> > I rebuit mine after 190K miles and the only thing that was wrong
> with it
> was the
> > timing chain was slapping around.  When I got it apart you could
> still see
> the
> > crosshatch honing marks on the cyl. walls.  The bearings had wear,
> but
> were
> > good, the cam seemed to be ok.  I was amazed.  I would probably
> made it to
> 250K,
> > but the timing chain might have eventually skipped.  Anyway I went
> ahead
> and
> > rebuilt it using the 1985 model year pistons because they were
> flattops.
> > However I had to put copper shims under the heads to keep the
> compression
> > reasonable.  Without them I would have had about 12:1 CR.  A
> little to
> high.
> > Now I've got about 10.8.  I really wanted about 10, but that is
> close.  I
> used
> > the MPG camshaft from NAPA.  Basically that cam is stock with the
> "EGR
> effect"
> > removed.  I wanted a smooth idle for a daily driver.  The rest of
> the
> engine
> > went stock.  I also rebuilt the 125C.  All together I spent no
> more than
> $1100
> > on both engine and trans.  Also put the Gill Younger shift kit
> from NAPA
> in the
> > trans.  I highly recommend that.  It's only about $10.   I made
> the tuning
> > changes to the ARDC and WOW it's got power.  Of cource it ran
> great stock,
> but
> > the high compression really helped it.  I imagine it would really
> have
> some good
> > power if I went radical with the cam, but I hate the rough idle.
> Besides
> I got
> > a 68 GTO for that kind of stuff.  Anyway I only burn 87 octane, no
> problem.
> >
> >
>