you dont need a thick copper plate a thin one will surprise you in the compression drop why not try two head gaskets without the copper plate?? this would probably reduce it enough! and would not affect the Squish bands in any way if in doubt give it a bit more of a tighten head bolts take a serious stretch!! so it would be fine! if it doesnt work to your satisfaction you can always mod the head second time round and remove the second gasket! ( as you cant put material back on to you cyl head once you remove it!!)
if you want it done technically right you should use a steel head saver which is like the copper gasket and all you do is stick it down to the block surface with hylomar sealant then put on your head gasket and refit your head (the saver shim is now once fitted part of the block and is not even a 1mm thick!
Actually steve the saver shim is under .5mmthick well the one i fitted! because it is steel it wont affect your sealing rings on your gasket and will tighten down the same as standard!
THEN AGAIN WHY NOT RUN LOWER BOOST PRESSURES AT THE HIGHER COMPRESSION TO ACHEIVE THE SAME RESULT !OR EVEN GAIN A LITTLE MORE TORQUE?? MORE RELIABLE AND EVEN BETTER TO DRIVE!
if you want it done technically right you should use a steel head saver which is like the copper gasket and all you do is stick it down to the block surface with hylomar sealant then put on your head gasket and refit your head (the saver shim is now once fitted part of the block and is not even a 1mm thick!
Actually steve the saver shim is under .5mmthick well the one i fitted! because it is steel it wont affect your sealing rings on your gasket and will tighten down the same as standard!
THEN AGAIN WHY NOT RUN LOWER BOOST PRESSURES AT THE HIGHER COMPRESSION TO ACHEIVE THE SAME RESULT !OR EVEN GAIN A LITTLE MORE TORQUE?? MORE RELIABLE AND EVEN BETTER TO DRIVE!
