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Old 10-23-2006, 10:39 AM   #1
compo1
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Default lifter installation questions

i have a 94 sl1..it is ticking really loud and two mechanics have diagnosed lifter(s) failure...it does not burn oil and overall runs well...what are the chances that there is some damage to the cam with worn lifters..should i replace or machine shop the cam at the same time..is it a tough job to replace the lifters..my haynes guide makes it sound easy although i'm sure it isnt..my first thought is to just replace the lifters and if i still have problems then i will pull the head and replace it and maybe the cam...any thoughts or observations....also is it normal wear and tear for the lifters to be worn at 135,000 or should i be looking for a lubrication problem as the cause of the lifter failure...well off to work,i'll check for response tonite(monday 10/23)...thanks in advance for any help/advice....compo1

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Old 10-23-2006, 10:48 AM   #2
blackeagle1
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Default Re: lifter installation questions

They might be mistaking the noise for timing chain noise. If your chain hasn't been replaced, it might be the cause.

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Old 10-23-2006, 11:30 AM   #3
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Default Re: lifter installation questions

Quote:
Originally Posted by blackeagle1
They might be mistaking the noise for timing chain noise. If your chain hasn't been replaced, it might be the cause.
I agree, the chain is much more likely to be the culprit with that mileage.

Lift the hood and listen to the left (passenger) side of the cam cover. The sound will be louder there than on the other side, if it's the chain. Just be careful with dangling clothing around the serp. belt.

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Old 10-23-2006, 11:36 AM   #4
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Default Re: lifter installation questions

Realistically, you can't pull the cam unless you pull the timing chain. That is unless you have a fancy tool to hold the cam sprockets in place. I've seen a few interesting improvisations for that like the one here. I'm not sure I'd trust that. So, you might as well plan on doing the timing chain and it's a real pain BTW.

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Old 10-23-2006, 05:27 PM   #5
Tatusmi
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Default Re: lifter installation questions

timing chain = bad news. you might as well run the engine into the ground and drop a new one in unless you're rather mechanically inclined and you're gunna do it yourself.

It is completely possible that you have a lifter gone, I have one gone in my car now... it makes a constant ticking noise. A timing chain will sound like an old VW diesel if it's on its way out... a busted lifter will not do any more damage to the engine (so I've been told) so it's more of an annoyance than anything.

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Old 10-23-2006, 05:58 PM   #6
eljefino
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Default Re: lifter installation questions

dudes... it's an SL1, real easy, cam can stay in.

Just remove the cam cover then the rocker arms on their "axles" (sorry, forget correct term) as an assembly. Just undo/redo each 10mm bolt head a little at a time so the axles don't bend under valve spring pressure. Then with these off the lifters are simply held in with little plates that sit there with gravity!

Once you have the lifters out, there's a little D-clip that you can finagle out with a screwdriver and you can dunk them in solvent. Many will remain stuck together, it is a tight fit and any sludge/gunk will hold them together, which naturally makes the tick.

You can run the engine real briefly with the cam cover off and tinfoil on the exhaust (naturally, rocker arms in place) to see if oil is getting to the top of the head. It should, plentifully.

You can see the cam with the rockers out (even with them in, albeit a restricted view) and see if it got damaged. Odds are, nope. The rockers have roller bottoms you can examine for good "rollability". Keep track of where you got each rocker so you could put them back in the same place.

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Old 10-24-2006, 08:36 AM   #7
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Default Re: lifter installation questions

thanks for all the great replies...i forgot to mention when i posted the question but the timing chain was replaced last year at 125k ...so i tend to agree that it is a lifter or lifters....i'm going to give it a go in a couple of weeks...think i'll stsrt with the lifters and go from there......thanks again....compo1

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