iziegsx

Hello all,

My name is Ian. I recently purchased a 2001 Japanese model s2000 from my friend. The car has 69k+ kilometers on the clock. The bottom was recently rebuilt with new oem internals and the head while being handled was dropped so it had to be shaved. Apparently it was shaved to much and now im told that there is some slack in the timing chain hence why the car is making such a ticking sound and is apparently leaking oil at the matting point of the block and the head.
I have researched the ticking sound and came to the conclusion that it was the timing chain tensioner which i plan to change after the new head installation.
Has anyone ever had such an issue? what would be a proper fix for my problems? Buy a new head? Buy a thicker head gasket? Change the timing chain tensioner first then do the head install and listen if the sound is goes away? Please help lol thanks in advance

ChefJ

Thicker head gasket would do the trick but with a loss of compression on an NA motor comes loss of HP.

I thought the JDM motors had higher compression anyway....

iziegsx

Hmmm Well ill be honest i dont know much about this car im very new too it and have been doing alot of reading on multiple things. Any idea who makes the thickest head gasket available? cometic seems to be the best option "3mm" would it be wrong to use two? lol forgive my ignorance ive never been faced with such an issue and ive never owned an NA car before.

iziegsx

Ok so ive done a search which revealed some information very helpful to me.....

This was quoted from forum member Greenlight in this thread

https://www.s2ki.com/forums/index.ph...ic=453863&st=0



..{quote}If the head is cut 0.050" the slack in the chain will increase by ~1/2" (hard to believe, but take a piece of string and test it for yourself).

The spring force will be reduced by 4.42 lb/in x .5 in. = 2.2 lbs.

This is a 13% reduction is total tensioner force and a 35% reduction in the force on the tensioner caused by the spring (at idle).....{quote}


This has led me to further believe that i am in need of a thicker head gasket and a new tensioner now to just get some feedback from other members.

LostMotion

How much was it shaved? You need to know so you know how much to add back. Also you can modify the TCT to help a little but depends on how much it was shaved.