Valve spring simptoms? Or anything else?
Valve spring simptoms? Or anything else? What would be some simptoms of bad valve springs? How much vacumm does a stock LS1 car have? Also what should i have for vacumm with the TTI kit installed? Is there anything else i should monitor with the scan tool that could vier me in the direction of the problem? Also if the valves are floating would it be misfireing?
with weak valve springs, it will just lay down. Turbo will not affect the vacuum at all. Mine stock had like 18 in if I remember correctly......others will chime in. If you have any misfires up top, then I would look at spark blowout or weak springs. I did have the intake hose on the turbo suck closed once ....that would make the turbo lay down as well....I had to kinda reorient it but you could just disconnect it to check that.
heehee yeah I ve been here huh jerry......valve float yeah you would have misfires......what type of springs do you have?spark blowout I doubt it overfueling possibly. Pull the plugs see if they are wet. One my setup the rockers were taping the retainers causing misfires above 5000rpms
Originally Posted by cablebandit
with weak valve springs, it will just lay down. Turbo will not affect the vacuum at all. Mine stock had like 18 in if I remember correctly......others will chime in. If you have any misfires up top, then I would look at spark blowout or weak springs. I did have the intake hose on the turbo suck closed once ....that would make the turbo lay down as well....I had to kinda reorient it but you could just disconnect it to check that.
what are the gaps on your plugs?
Originally Posted by ESR
heehee yeah I ve been here huh jerry......valve float yeah you would have misfires......what type of springs do you have?spark blowout I doubt it overfueling possibly. Pull the plugs see if they are wet. One my setup the rockers were taping the retainers causing misfires above 5000rpms
The plugs are TR6's gapped at .040. If the turbo hose was calapsing would it show on the boost gauge? Because it holds about 8.5 lbs to redline. I also still have stock valve springs on the car. I am going to log the car soon with a friends scanner to see if it misfires up top.
also the car mad 360 rwhp at 4 psi because i couldn't get the waste gate to run more. well then i changed the spring in the gate and am now at 8 lbs. the car made 360 all the way up top then at 8 psi it made 380 but at a way lower rpm. ayone think valve float?
