F7P head/ F7R bottom question

[Reno 9]

Hi all,
I started to put the F7P head on thd F7R bottom but I have a question:
what will be the head gasket from.
Is it will be from F7R as it has bigger bore or I can put the F7P with no problem.

also I finished my head work by porting and polish and remove 0.25 mm to increase the compression ratio to 10.6 : 1 approximate.

I hope that I can gain 10 hp from this setup

 

[Neal R19]

First: I think the actual head casting is the same between F7P and F7R in terms of combustion chamber size/shape. The bore size is only 0.7mm different anyway (so 0.35mm all round)... bugger all. Either will work.

Secondly: Skimming big chunks off the head retards the valve timing. So you now need some vernier pulleys and a proper setup to get it right if you want to see your power increase

 

[Reno 9]

OoOoPpPpS

So do you think that their will be side effects from increasing the compression ratio.
Because i will not be able to have those pulleys now.