SOHC.co.uk Forums > CB750

K1 pistons and rings in a F1

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UK Pete:
Does any one know if K1 oistons and rings work in a F1, if so are there any advantages or dissadvantages,
Pete

steff750:
 ::) off the top of my head i would say they would work,as long as they are the same size, a local engineer who has done work for me  would always bore the barrels too match the pistons and not just bore too a specified oversize ,i have mixed and matched k0- k4 bits over the years, i think the only real difference was in the f2 with the bigger chocolate valves, I'm sure some one will put you right soon enough

Bryanj:
Not 100% sure but i think you will get a slightly lower compression ratio

kaceyk2:
I cant remember Pete if the F1 had domed pistons the same as the F2, if it did then + one with the slightly lower compression...but it really would be very slightly lower....

Spitfire:
The F1 pistons are not as domed as the F2, they are very slightly domed with small cut aways, here's a pic of mine.


Cheers

Den

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