Valve clearances Race Engines

[mark400]

Do you tend to use the factory clearances or would you set them slightly looser ?

Racing Manual says .20 - .25 inlet .25 - .28 Exhaust

Road Manual says .12 - .17 inlet .16 - .21 Exhaust

Anything I need to bear in mind with stainless valves ???

Answers on a postcard.....

[wes]

I split the difference and set them at
exhaust .21 - .25
inlet .17 - .20
Don't think the stainless valves will make a difference.
IIRC the road and race manual also differ where to measure, between cam lobe and rocker and valve and rocker

Think a phone call may be a good idea, most tuners are pretty helpful

[mark400]

Hi Wes, yes you are right - The race manual measures them directly above the shim, instead of between the cam lobe and rocker. Just spoke to afriend who did use the race settings once and said it was soo rattly he daren't rev it !