shims

[catbed]

what does it mean when it says 2.65x on a shim? because on my motor, there is a 2.65x valve with a clearance too small for a .05 feeler to fit, but when i put a 2.70 in, the gap is .11mm.

[Nessism]

X shims are thicker than regular shims. Very valuable for getting the clearance "just right".

[bwringer]

X shims are normally .02 or .03mm thicker than normal shims.

In later models (I was recently working on a 2005 GS500 engine), the shims are actually marked 2.78, 2.62, etc. In ye olden days, these would have been 2.75x and 2.60x.

[Nessism]

X shims are normally .02 or .03mm thicker than normal shims.

In later models (I was recently working on a 2005 GS500 engine), the shims are actually marked 2.78, 2.62, etc. In ye olden days, these would have been 2.75x and 2.60x.

Some aftermarket shims are sold in these in between sizes - had one marked 268 I installed today (brand new). Got it from a dealer in trade for some other shims.

[lurch12_2000]

what does it mean when it says 2.65x on a shim? because on my motor, there is a 2.65x valve with a clearance too small for a .05 feeler to fit, but when i put a 2.70 in, the gap is .11mm.

Did you mean when you put a 2.60 in the gap was now .11mm?
otherwise something's wrong- either how you measured or the shim size is way off!

[catbed]

thats exactly what i meant, lurch.

so should i order a 2.65 from z1 and then it will go in spec?

[lurch12_2000]

thats exactly what i meant, lurch.

so should i order a 2.65 from z1 and then it will go in spec?

Yes, I would think that you'll then be at .05 or .06mm with 2.65 shim.

[psyguy]

what does it mean when it says 2.65x on a shim? because on my motor, there is a 2.65x valve with a clearance too small for a .05 feeler to fit, but when i put a 2.70 in, the gap is .11mm.

you need to get your numbers straight as the above doesnt make sense...:?

you probably need the 2.65 shim