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Timing Replacement Question


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Hey guys, downloaded the Haynes manual to do this unbelievably time consuming task. Going through these steps and it says to take off lower and upper oil pans?  Is that really necessary? I'm replacing the timing so I'm confused as to why either oil pan would have to come off. Can anyone shed a little light on that question? 

Thanks! 

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If it's got upper and lower pans, that suggests it's the 3.5. I skimmed the service manual for the 3.5 and didn't see anything about dropping the pan. Download the FSM from Nicoclub if you haven't yet.

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I got the cover off without taking the pan off. I'm not sure why haynes says you have to, but you don't. Id like to think if I really clean it up, it's going to ruin so much better, but I know it won't. It just wants the correct timing. I'll see if I can do it without destroying the motor. Wow, this job is a P.I.T.A.!!!

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  • 2 weeks later...

Hey, I just got your message on the chat. From my experience, it's because there is a U shaped gasket that is supposed to sandwich between the top of the upper oil and and the bottom of the front timing cover. By installing the upper oil pan last, it allows you to securely place the gasket while you compress it by tightening the upper oil pan. Otherwise, you're trying to push a rubber gasket in between two already secured metal parts. I did not drop my upper oil pan for this. I just reused the old flattened, hard gasket... which was a nightmare to squeeze in. I would say with 95% certainty that it's impossible to install a fresh rubber seal without dropping the upper oil pan. Also, If you drop the upper oil pan, You'll have a few o rings inside the upper oil pan to replace and you'll want to replace the u shaped gasket under the rear main seal too. It's kind of like that book If you give a mouse a cookie

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