I checked my valve train while adjusting my rocker arms again last weekend, and I noticed on a few valves the centerline of the roller tip is slightly toward the exhaust side of the head. Does this mean I need slightly longer or shorter push rods? I can never remember. Also, is there any damage that could be done caused from off-line geometry? Or does it only have an adverse affect on performance? I am curious if that could be hurting things, performance wise or in the long run wise of my valve seals and stems, ect. Also, what is the least amount of turns past zero lash recommended for stock lifters? The aluminum 1.7 rockers are pretty big, and a couple of them were rubbing against the top of the nut on the rocker arm stud and making some ticking noise. One of them on the passenger side is still making a ticking noise, and I'm sure the rubbing is what is causing it. The rockers were previously adjusted to about 3/4 turn past zero lash, so now I have them all adjusted at 1/2 turn past zero lash, could I back it off an 1/8 or 1/6 of a turn and be ok on the ones I think might be making noise? Thanks in advance!

 

ttt

 

closer to exhaust side = too long of pushrod. You could just buy lash caps to compensate Plus they are good to have anyways, by getting lash caps it should make a long pushrod right if its slightly off. There are .050, .060, .080, & .100 lash caps. I think the .080 are the comp cams ones & the .060 are the crane ones.

matt.

 

Thanks. What exactly is a lash cap? I've never heard of anyone using those.

 

lash caps go ontop of the the valve stem, just drop on, to use them you have to be using non-self aligning rockers though, they act to protect the tip of the valve from getting mushroomed over time.

 

I have NSA rockers, so that's good, I'll try to find some...what website can I buy them at?