I need to replace a broken timing chain rail on my 1994 pickup 22re, so while I'm in there I'm wondering if it's wise to replace the oil pump too. I know that eventually every/any mechanical part will fail, but is it recommended to replace the oil pump merely as a precaution after 220k miles?


Also, since I'll be installing a new timing chain at the same time is it best to replace the cam and crank timing gears with it? They are already included in the kit I purchased, but if I don't have to replace the originals then I'd rather not. However, I was told by a friend that it's best to replace the gears with the chain because the wear on the original gears could increase the likelihood of slippage. Is that realistic with the Toyota hardened gears? Thanks.

 

I can only say if I have the timing cover off it gets all new parts.

Timing Cover Oil and water pump.

timing chain set.

Metal backed guides.

All new belts and hoses

This after all is your engine do as you will.

I would reuse the chain before the gears if push came to shove.

One of those personal things like pulling a engine and reinstalling you clutch with over 125,000 miles because it still looks fine.

 

Thanks. Why the cover though if it's not damaged? Does it warp naturally over time so the new seals might not fit right?

 

If there is no wear on the timing cover then no need to replace it!!! Unless you just have money you want to waste on an aftermarket part!!! Absolutely replace the chain, gears, tensioner and steel guides!!!

With your miles on the motor I think I would replace the oil pump. I doubt the water pump is original, and would lean to replacing it if it were original. All that being said on the water pump, it's easy to replace and if money is an issue leave it be, but do rotate it to see how it feels. If it feels rough or loose then replace.

I just did the HG and timing gears, chain, guides and tensioner on my 22re, and didn't do the water pump or oil pump. Felt good about not replaceing them too. The truck had 124,000 miles and a blown head gasket. The water pump was replaced some time ago so it wasn't even considered to replace it. Oil pump, no need as the truck has had 3,000 mile oil changes since new.

 

Most times till I drag the truck Home someone has either cracked the timing cover from using the wrong bolts in the wrong holes.

stripped the hole in the top of the cover coming down from the head.

Broken studs for the water pump.

Things like that

For me time is money Labor is the big expense

I would rather not have to deal with it again

Personal thing I guess the way my mentor taught me.

 

well that just makes since if it's damaged of course replace it....there shouldn't be any question to that.....if not damaged then why replace with an aftermarket part that was my point. I'd rather have the original part than an aftermarket part as you never can tell about after market stuff. Give me OEM any day over aftermarket...you never can tell with that stuff. IMHO!!

 

If you can tell the difference between two used timing covers one off a original engine and one from Engine Builder .

You are much better then me!!

It only took one time using a old cover that even after bead blasting and looking real close .

The oil pump just keep seeping oil not at the seal but where the pump mates with the cover .

The time spent pulling it apart and back together just to me was not worth it.