Cam timing for shaved heads?

[mouse240z]

Thinking of shaving my P90 head to up the compression ratio to 10:1 on my future L28 rebuild. Can I bypass the need for shimming up the cam towers,  if I just install a adjustable cam sprocket?

[Zedman240®]

I think you will be pushing the limits of the cam chain tensioner there...It would be good to get the shims..

[Zedback]

I've heard that Kameari make a timing chain tensioner replacement that removes the need to shim the towers.  A bloke in the Qld Z Car Club was telling me about them.  If I remember who it was I'll let you know.

 

[edit] do a search on "Kameari" and a few threads pop up where it's already been discussed 

[mouse240z]

Thanks for your info, Kameari tensioners look to be the right thing for the job. Cheers

[Scoota G]

Is this the type that you Guyz are talking about?

 

http://www.kameariusa.com/L6_Twin_Idler_Gear.php

[xa1973]

Yep

 

Thats the ticket, the same as mine

 

Theres always something out there, that someone knows about to make life easier at the end of the day, especially with cars

 

Cheers

 

[mouse240z]

Hi xa 1973. How would you rate the timing chain mod, did you install it because you had shaved the head on your car? Cheers Kev

[xa1973]

Hey Kev

 

Yes and Yes, but I only shaved my surfaces by 3 thou as a clean up measure for piece of mind, you will need to determine how much you have or are going to shave and check your tolerances, if it is too great out of OEM specs you will either still need to shim or get a better head and start again

 

I bought and installed this unit as a development excercise for myself to rate a pumped L Series Block against a V8 conversion I am looking at

 

I rate the unit very highly, all engines have a weak link somewhere in the chain, the timing gear is a weak link in the L Series engines

 

The OEM stretch far too much, are time consuming and a real pain in the keester to change out, particularly if your running FI and fall out of the tree when pushed hard if your block is modified

 

A real s--t also if you lose the tensioner into the sump!!!!!

 

These units are double row, well manufactured and made tough to run hard and install with out that C--P spring loaded tensioner, they are set and forget units

 

They are expensive, I bought mine when the AUS dollar was good so I could justify the cost ( to myself anyway ) but if your only using your joy as a sometime daily runner the OEM will suit you

 

Cheers

 

Jeff