reduce compression

[gpp]

i have a set of se heads for my 103 build that yeild about 10.80 compression according to the harley chart.how can i get it down to about 10.01?

[ceraaa42]

I'm sure there is a way to do it with the heads, but it's probably easier and cheaper to change the pistons. Unless what you have already yeilds the lowest.

Chris

[fastroadking106]

It takes a good engine guy but there are many different thickness head gaskets on the market that would be the cheapest and easiest

[TXCHOP]

Originally Posted by fastroadking106

It takes a good engine guy but there are many different thickness head gaskets on the market that would be the cheapest and easiest

That's right...but......Going with a thicker headgasket will open up the squench area a bit much. Not too good for pinging and tuning issues that may occur. I would rather send the heads out to a good machine shop to be opened up a bit or switch out to a dished or custom piston.

[fastroadking106]

True that is how i do my builds but just giving another option I beleive at just 10:1 there should not be any tuning problems

[gpp]

so if i double the gasket thickness about what would it take to do this?

[claydbal]

first off, forget about the harley chart. CC the heads and tell which pistons you have. the CORRECT math can then be done.