22re Knocking after cam and timing chain change.....

[CELICASUPRA7M]

is it something to do with the timing chain? like its slapping the inside of the cover?. were the guides and tensioner replaced?

[Slidin23]

replaced the guides tensioners and chain.....

its really baffled me. it doesnt do it on start up and only does it when rev'ed when at operating temp. doesnt sound like a bottom end to me??

[CELICASUPRA7M]

can you get it to knock constantly enough to pull plug leads one by one and isolate it to a cylinder?

[Slidin23]

yep we did that it didnt make any difference. knocking was still there..... could it possibly timing chain installed wrong?

[Slidin23]

but that woulnt make it do it once it heats up.... that would be more constant wouldnt it?

[CELICASUPRA7M]

if the timing marks line up its gotta be right.
The cam pulley bolt could be loose, but i doubt it would cause a rattle, compression test?

[Slidin23]

compression test was good

timing marks are all good. im so stumped :s

[CELICASUPRA7M]

sounds like you've checked everything you can while its fully assembled, you know what that means!

[Slidin23]

yep

ill check oil presure tomorrow and go winge at dave from sleeka spares as thats where i got the cam from lol... maybe i could get him to come have a listen to it for me..... seeing as he is a qualified mechanic he could point me in the right direction...

[Slidin23]

if its blown motor i have found a few for around 400 bucks but if its somthing simple like i think it is i would really like to know what it is....

[LezSpaz]

Did it sound like a ticking noise?

[GTA22]

I had a Hilux which at 502 000 klms developed the same problem. After driving it like an old woman and not driving it hard i managed to get a couple more thousand k,s before it near craped itself on the way home from work one day.
After extracting the motor and pulling the sump off, revealing a flogged out no3 big end.
Fortunatley there was no damage to the crank or caps, so i purchase a set of king bearings and reassembled and of she went sweet. Probably for another 500 000 or so, but i will never know as sold it soon after.
Just to let you know that when i started it up cold it ran smooth and quiet, however upon warming up it developed a knocking noise which did sound like from the top ( harmonics at a guess ). At first it was intermittent and at mid range and as i kept driving it after living with it, it progressively got worse. As these things do when no attention is paid.
I hope for your sake it isn't and that it is an easy fix, which for most the time it is. The worst thing is sourcing the problem. Mind you the bigend bearings in my case was an easy fix but getting the motor out and back in, well that sucked 10 fold.
Hope i have helped.
Cheers Simon

[Slidin23]

http://www.toyotalexusforum.com/toyo...e-4runner.html

this link here sounds exactly like what my problem is.... im thinking bearing to

i have found a recently recon'ed motor in s.a for 400 bucks.... with everything i wonder if it is worth just replacing it an putting my performance cam in? thourghts?

or would it e easyerto just wack a set of bearings in?

[Slidin23]

is it easy to just chuck a set of bearings in these things? would i need to do mains? or just big ends?

[CELICASUPRA7M]

You can do big ends with the motor in car but i wouldnt recomend it lol, with bearing failure you going to have metal shavings throughout the motor so a full strip down is the go.
If you can get another motor thats good, do that for sure!