Head Skimming?

[jamier2007]

What is the limit you can skim a k11 head thats got 1.0 pistons? Obviously it wil have high compression anyway but every little helps

 

[frank]

1mm should be ok with superunleaded, will make it 12.5:1 + eh

 

[jamier2007]

That would be awesome. So no issues with valves hitting or something like that?

 

[frank]

That would be awesome. So no issues with valves hitting or something like that?

nah. i,ve just fitted a 2mm skimmed head with weld filled chambers too (and 1.0 pistons)

 

[jamier2007]

What compression ratio does taking 2mm off give you?

 

[jamier2007]

Also are there any problems with the timing chain being slack?

 

[frank]

What compression ratio does taking 2mm off give you?

mine,s a 1.0 atm, so about 11:1 i guess

Also are there any problems with the timing chain being slack?

yes, if the chain is half worn the lower tensioner will be fully extended