timing chain

beaujt · Sep 21, 2009

how often do you guys replace the timing chain on the OHV 4.0L? i've tried looking around to find out about replacing it and such, but can't find anything on it.

feellnfroggy · Sep 21, 2009

I should think you wouldnt have to unless your real hard on it. But unless someone wiht more experience jumps in, I would say around 100k

exbass94 · Sep 21, 2009

It's designed to last the life of the engine. You don't have to replace it. This is true for pretty much any engine with a timing chain. Which is why I love timing chains, and hate timing belts.

Bob Ayers · Sep 21, 2009

+1, Timing chains are not a maintenance item like a timing belt is.

AllanD · Sep 21, 2009

I've never seen or heard a credible report of a timing chain failure
on a 4.0OHV.

On a 4.0SOHC? Oh, yeah....

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beaujt · Sep 21, 2009

ok, i just wasn't sure cause on my brother's yota, he actually had the timing chain wear through the cover. He found it before it took the motor out, but i've also had a friend who didn't catch it in time and it took the motor out, some coolant got in wear the timing chain had worn through, and took the motor out. but then again it was a toyota hahaha

AllanD · Sep 21, 2009

the Long timing chains used on OHC engines are much more prone to wear and failure than the much shorter chains used on V6 and V8 pushrod engines.

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timing chain

beaujt

15+ Year Member

feellnfroggy

15+ Year Member

exbass94

15+ Year Member

Bob Ayers

15+ Year Member

AllanD

TRS Technical Staff

beaujt

15+ Year Member

AllanD

TRS Technical Staff

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