i look on the BGB and it said ...
in - 0.15 - 0.25 mm (0.006 - 0.010")
ex - 0.20 - 0.30 mm (0.008 - 0.012")
But that is for a 1991 engine..
i found a specs page for the ST205 engine, and the intake clearance is the same , but the ex was 0.28 - 0.38mm ???
anyone know which is correct?
[Mk2] [Turbo] Rev3 valve clearances... What are they?!
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Re: [Mk2] [Turbo] Rev3 valve clearances... What are they?!
Inlet valve clearance 0.15 - 0.25mm Shim under bucket
Exhaust valve clearance 0.28 - 0.38mm Shim under bucket
Exhaust valve clearance 0.28 - 0.38mm Shim under bucket
Re: [Mk2] [Turbo] Rev3 valve clearances... What are they?!
sweet mate, thanx
Re: [Mk2] [Turbo] Rev3 valve clearances... What are they?!
Yeah, i set mine to the above. I found after having the valves resurfaced the gaps were all a bit on the small side. A flat bit of tempered glass,some ultra fine wet and a micrometer saved me buying any new shims.
Re: [Mk2] [Turbo] Rev3 valve clearances... What are they?!
well mine come out (after lapping)
IN:
0.16--0.16-----0.16--0.17----0.16--0.19----0.16--0.16 (limits 0.15-0.25)
EX:
0.31--0.34----0.35--0.37----0.34--0.31----0.35--0.35 (limits 0.28-0.38.)
Sooo, i would say thats within tollerences ya?
IN:
0.16--0.16-----0.16--0.17----0.16--0.19----0.16--0.16 (limits 0.15-0.25)
EX:
0.31--0.34----0.35--0.37----0.34--0.31----0.35--0.35 (limits 0.28-0.38.)
Sooo, i would say thats within tollerences ya?
Last edited by RyanRs on Fri Dec 28, 2007 4:23 pm, edited 1 time in total.
Re: [Mk2] [Turbo] Rev3 valve clearances... What are they?!
pretty good ryan .
i opted to keep all the tolerances to the tighter side of the specs ,will give you probably unnoticeable performance gains ,as in taking a .37 gap down to .28 as per the tighter side of the spec will give another almost 0.1mm of valve opening .
plus looser specs mean noiser tappets especially on higer lift cams where you hear it more .
i very luckily got all of mine within 0.02 of the lower end of the spec ,i swapped most shims around and only had to buy 4 new ones
i opted to keep all the tolerances to the tighter side of the specs ,will give you probably unnoticeable performance gains ,as in taking a .37 gap down to .28 as per the tighter side of the spec will give another almost 0.1mm of valve opening .
plus looser specs mean noiser tappets especially on higer lift cams where you hear it more .
i very luckily got all of mine within 0.02 of the lower end of the spec ,i swapped most shims around and only had to buy 4 new ones
Re: [Mk2] [Turbo] Rev3 valve clearances... What are they?!
Hello!
Does anyone know where you can get the shims? Or are all under bucket shims universal??
Cheers
Does anyone know where you can get the shims? Or are all under bucket shims universal??
Cheers