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Old 12-25-2004, 00:06   #1 (permalink)
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timing chain cover, ef

on my mates ef the snout of the crank shaft was worn out, the mechanic that diagnosed it said he needed to take the head off to get the timing chain cover off, is this true?
wanting to know so we can tell him to shov it where the sun don shine.

i ask as he wanted $3.5k to rebuild the engine including the remachining of the crankshaft, which sounded like highway robbery so just put in a secondhand engine and was lucky as it is in good nick.
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Old 12-25-2004, 00:30   #2 (permalink)
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Re: timing chain cover, ef

The front of the cranks do wear where the seal runs, however sleeves can be fitted which last a while.
The head does not need to be removed to R&R the timing cover.

Rick.
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Old 12-25-2004, 01:16   #3 (permalink)
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Re: timing chain cover, ef

thnks soxx, i guess we atleast know the truth now if nothin else
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Old 12-25-2004, 01:38   #4 (permalink)
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Re: timing chain cover, ef

I would think it would be easier to remove the head to take the timing cover off. The timing cover is jammed hard by the sump at one end and the head at the other. There are seals at both end and I would think that you could easily damage them when you put the cover back on.

I suppose you could do it though.
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Old 12-25-2004, 01:44   #5 (permalink)
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Re: timing chain cover, ef

Quote:
Originally Posted by stockstandard
I would think it would be easier to remove the head to take the timing cover off. The timing cover is jammed hard by the sump at one end and the head at the other. There are seals at both end and I would think that you could easily damage them when you put the cover back on.
Nope, it's a piece of piss to R&R the timing cover with the head on.
All what is needed is to undo most of the sump bolts and drop the front half of the sump about 1/2".
Done it many times, and it's far more preferable to do it that way than removing the head.

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Old 12-25-2004, 01:56   #6 (permalink)
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Re: timing chain cover, ef

Yeah, if you drop the front of the sump there will be no problem.

If the car has a few k's on it you might want to go via the head anyway - do the head gasket while you are pulling the thing apart.
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Old 12-25-2004, 03:02   #7 (permalink)
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Re: timing chain cover, ef

Quote:
Originally Posted by Soxx
The front of the cranks do wear where the seal runs, however sleeves can be fitted which last a while.
The head does not need to be removed to R&R the timing cover.

Rick.

Since when did the front seal run on the crank shaft????. It runs on the balancer snout.

They can flog the key way out if the balancer hasnt been tight, this allowes the bottom gear to mover around and cause cam timing to change.
The gear its self can wear the crank out if they key way starts to chew out causeing the gear to lean over slighlty...
Only ever seen it on 250's which some didnt ever run a bolt to hold the balancer on with.
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Old 12-25-2004, 13:15   #8 (permalink)
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Re: timing chain cover, ef

Quote:
Originally Posted by INJECTED250
Since when did the front seal run on the crank shaft????. It runs on the balancer snout.
Yeh..... Probably since I found the key to the medicine cabinet......
Quote:
They can flog the key way out if the balancer hasnt been tight, this allowes the bottom gear to mover around and cause cam timing to change.
The gear its self can wear the crank out if they key way starts to chew out causeing the gear to lean over slighlty...
Only ever seen it on 250's which some didnt ever run a bolt to hold the balancer on with.
I've seen this a few times too, as you say, it's caused by a too loose harmonic balancer bolt.

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