Valve Lash Adjustment

[96LSteg]

Im about to do a valve lash adjustment and wanted peoples opinions on whether I should lean to the tighter side of spec or the looser side of spec...

 

[Samurai_Blue]

you do it by feel, with the feeler gauge in, slowly bull the feeler gauge out and you should feel a slight drag.

 

[96LSteg]

I know that lol but spec for my LS is (according to my service manual)

IN .003-.005
EX .006-.008

my question is should I go .003(IN)-.006(EX) or should I go .005(IN)-.008(EX)

 

[Samurai_Blue]

i think i run bigger on my motor because i dont have a smaller feeler gauge. but i would go with the middle for both of yours. .004 and .007

 

[96LSteg]

ok thanks bro

 

[Muckman]

I target the tigher spec because this clearance directly corresponds to actual valve lift. To gain an extra thousanths or two of free valve lift is a win. Adverse affects of going too tight would be increased cam/rocker wear and possible negative lash clearance once things heat up. However those would never be a risk with stock clearances.

 

[96LSteg]

Doesn't valve lash shift the power and some?

 

[Muckman]

No. Cam profile is responsible for that. This is just lift. Cam lobe pushes rocker which pushes valve.

 

[96LSteg]

Got it. Man you are a f**king genius

 

[pluckt007]

Damn you guys got on this one quick!

I just did mine maybe 3 weekends ago.

I did .003" intake
.006"exhaust. I can tell the idle is differnent. Breathes more, you can feel it.