Can bad rocker arm adjustment cost me 100rwhp?
08-13-2005, 04:12 PM
#1
Staging Lane
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Can bad rocker arm adjustment cost me 100rwhp? my recent dyno after all the headaches with tuning net 387rwhp...
I have heads and cam and that same combo netted on a camaro 484rwhp on an ls1 block... cam is 226/230 113lsa
Any ideas????
afr was from 11.6 to 12.2 at the end
the dyno wb was reading 10.6 to 12.6....
still, tuning will not net 100rwhp.
I have heads and cam and that same combo netted on a camaro 484rwhp on an ls1 block... cam is 226/230 113lsa
Any ideas????
afr was from 11.6 to 12.2 at the end
the dyno wb was reading 10.6 to 12.6....
still, tuning will not net 100rwhp.
08-13-2005, 11:09 PM
#6
We lost 98 hp due to the wrong spark plugs. They were too short and didnt even get close to getting into the chamber. It went from a little over 500hp to 600hp with the correct plugs in it. Just an idea. Yes a bad rocker adjusment could cost you alot of power, by letting the valve hang open.
Last edited by camrsz; 08-13-2005 at 11:14 PM.
08-14-2005, 01:53 AM
#7
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I was told on another forum that i could have the wrong cam...
pre 02 cams where 19.7 base circle and laters where 19mm.. this is an 01 with an 04 engine ... if by some reason i have a 19.7mm base circle that is 27 thousands the valve is open... its still less than .050 but it should bleed off some of the pressure specially at higher rpms where i feel the car is loosing way too much..
www.roxanette.com/awfuldyno.jpg
pre 02 cams where 19.7 base circle and laters where 19mm.. this is an 01 with an 04 engine ... if by some reason i have a 19.7mm base circle that is 27 thousands the valve is open... its still less than .050 but it should bleed off some of the pressure specially at higher rpms where i feel the car is loosing way too much..
www.roxanette.com/awfuldyno.jpg
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08-14-2005, 03:47 AM
#8
TECH Senior Member
Originally Posted by The highlander
I was told on another forum that i could have the wrong cam...
pre 02 cams where 19.7 base circle and laters where 19mm.. this is an 01 with an 04 engine ... if by some reason i have a 19.7mm base circle that is 27 thousands the valve is open... its still less than .050 but it should bleed off some of the pressure specially at higher rpms where i feel the car is loosing way too much..
www.roxanette.com/awfuldyno.jpg
pre 02 cams where 19.7 base circle and laters where 19mm.. this is an 01 with an 04 engine ... if by some reason i have a 19.7mm base circle that is 27 thousands the valve is open... its still less than .050 but it should bleed off some of the pressure specially at higher rpms where i feel the car is loosing way too much..
www.roxanette.com/awfuldyno.jpg
What are the .050 specs of the cam you have in there now?
