Hi guys

I had problems with the installing of the cams, finally i fixed it and everything is normal now; Then i took it to the dyno for a tune and there was a drop in the HP till 6500rpm, in other words the cams give max HP at 6500rpm. Is this normal for cams to function at 6+ rpm? Can it be fixed?

My mods are: Custom Headers,Exhaust/ CAI/ Tomei Camshafts/ Unichip

Mods please move my thread to Engine,Drivetrain sorry for wrong section post.

 

I am running the Tomei 272's and for me to pick the power up down low I had to change the VTC angle. Before I did that the power was very low down low but picked up around 15 to 20 hp by advancing the cams. You might have to do the same thing with the 264's.

 

rednezz,

how did you change the VCT angle?

 

slow wind - what was wrong with your install? i remember you saying that you lost 40hp or something from installing the camshafts

 

The Osiris has the ability to change the VTC angle to 6600 rpm.

 

the camshafts were not balanced... Plus some of the shims were tight others were loose

 

yes, I read that in one of the Osiris posts. I thought you had a mechanical way of doing it.

 

My Z its currenty at the workshop fitting the 264 Tomei cams as well. Let you know how it goes after tune

 

They should be shimmed to .3 mm on intake and .33 mm on the exhaust if that helps any.

 

Thanks ztune that would be very helpful... Can't wait