Turn & Burn
Club Member
I'm nearing the point of commencing rebuild on my L28 motor and wondering what people have done with regards to cam timing. The block is slightly skimmed to clean the face up and the head will be getting an amount of skim to enable the higher compression, aiming for 10.8/1 on an N42 head.
I'm running oversize valves with a 1mm longer stem than the usual N42, so it may be best practice to shim for this reason alone and maintain original geometry.
What's the usual approach to skimmed heads, do people shim the cam towers or fit an adjustable pulley?
How much head skim can the chain tolerate before it runs slack, so will I need to shim regardless?
If I need an adjustable pulley does anyone have one they don't require?
Thanks
I'm running oversize valves with a 1mm longer stem than the usual N42, so it may be best practice to shim for this reason alone and maintain original geometry.
What's the usual approach to skimmed heads, do people shim the cam towers or fit an adjustable pulley?
How much head skim can the chain tolerate before it runs slack, so will I need to shim regardless?
If I need an adjustable pulley does anyone have one they don't require?
Thanks
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