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Old 12-27-2009, 08:44 PM
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Make: chevy
Model: z24
Engine: 2.4
Help with timing chain replacement 2.4l Z24

Im tryin to install the timing chain while replacing the water pump in my 2.4 l Z24. The chain is too tight to get over the intake and exhaust sproket. The manual says to rotate the camshaft counterclockwise, but now i fear its not on TDC. Any suggestions?
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Old 12-27-2009, 10:09 PM
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Make: Pontiac
Model: 1991 Grand Am LE-W32 coupe
Engine: LGO in 'Rocketparts' trim.
this is the toughest thing to do while servicing/rebuilding our engines; there is an exact order to do things - please search here, as I am sure that the 2.4L process has been posted.


maybe someone can help you out by posting a link?
(this is probably the most applicable LINK I could find you)



welcome here btw!!
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Last edited by unruhjonny; 12-27-2009 at 10:24 PM.
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  #3  
Old 12-28-2009, 12:32 PM
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Make: Pontiac
Model: 95 Sunfire Convertible
Engine: W41 Quad4 swap
sounds as if you tensioner isnt compressed all the way. Also BUY A NEW CHAIN at least, if you havent already.
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Old 12-28-2009, 02:28 PM
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The chain isn't going to 'go over' those sprockets... If its done correctly, before you release the tensioner, the chain will practically seem too big.

You can make a little tool to hold the tensioner, OR, you can use the little u-clip that holds your shifter handle on (if you have an automatic).

Just don't lose it when you take it out.

Quote:
Originally Posted by stargazer7467 View Post
sounds as if you tensioner isnt compressed all the way. Also BUY A NEW CHAIN at least, if you havent already.
Is this really necessary? I mean on an importance scale of "stuff that wears out", where does this fall?
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Old 12-28-2009, 02:43 PM
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Make: Pontiac
Model: 1991 Grand Am LE-W32 coupe
Engine: LGO in 'Rocketparts' trim.
oh yeah - regaurding hte "replace chain" comment that couldn't be more correct of a statement....

I recently came across a very nice '93 LGO GA-GT coupe in the scrapyard;
- looked to be well maintained
- relatively rust free
- nice interior
upon closer inspection I could tell it recently had a HG change, upon which time a rebuilt 086 head was sourced.

ff>> I removed the cams from this car.

During removal it was apparent that the timing chain, and the gears were worn BAD - it looked to me like the timing chain was worn so bad, that it ended up chewing into the gears to the point that some of the gear teeth were aboslutley tiny ~ causing the gears to skip, and every single exhaust valve to be bent...
I have no doubt that the car owner, having recently done the HG/new head job, got fed up after this mishap and just threw the car away...
little would he have known that a couple extra bucks in parts (and no extra labor cost) would have saved his car.

Last edited by unruhjonny; 12-28-2009 at 04:27 PM.
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  #6  
Old 12-28-2009, 10:00 PM
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Model: 99 Malibu -- D88 Interceptor
Engine: 2.4L LD9 -- 7.5L Rocket
'Rulez' I was taught:

Anything over 50% life gets replaced (if you assume 100k, then after 50k)
Anything that just don't look right gets replaced
Always replace guides that show any wear, they're usually cheap enough
Always do chains and gears as a set with pre-lube
Use OEM parts unless truly better ones are available
{unless you like to take things apart repeatedly and risk breaking other things...}

Do it right once, or
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Old 12-28-2009, 10:00 PM
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Make: chevy
Model: z24
Engine: 2.4
timing chain install issues

I have the dowel pin installed into the exhaust camshaft sproket. I also have the dowel pin installed into the intake camshaft sproket. I have the crankshaft at TDC. I ran the chain from the exhaust sproket, to the water pump gear down to the crank shaft up to the intake camshaft sproket. The chain is too tight to go over the intake sproket. So i take out the intake dowel pin and turn it counterclockwise and attempt to slide the chain on.

At this point I do not even have the timing chain tensioner on and I still cant get the chain on.

Each time I attempt to install and the chain and it slides across the intake sproket I turn the sproket counter clockwise and reinstall the intake dowel and start over.

What am I missing here?
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  #8  
Old 12-28-2009, 10:45 PM
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Make: Pontiac
Model: 1991 Grand Am LE-W32 coupe
Engine: LGO in 'Rocketparts' trim.
I can read that you're doing it wrong already...

did you read the thread I linked??

did you do a search for info???

you do not install the chain with either cam "locked" or the shortblock at TDC...
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24l, chain, replacement, timing, z24



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