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Cylinder head compression

Posted: Sun Sep 27, 2009 4:42 pm
by bazman
Have an AF head with compression ratio of 9.5-1 with 1.5 mm head gasket or 9.0-1 with 2.0 mm gasket, now to get squish to 1.3mm i'm running with no head gasket, can anyone tell me if this compression ratio will be suitable for road going TS1 225 , i've heard 6.5-1 is the optimium ratio? :?

Re: Cylinder head compression

Posted: Mon Sep 28, 2009 9:06 am
by RinB
Bazman

I think youll find its 1.5mm Squish for 9.5CR & 2mm Squish for 9.0CR

So 1.3mm squish is about 9.75CR this should be fine on normal unleaded petrol.

Smiffy

Re: Cylinder head compression

Posted: Mon Sep 28, 2009 9:59 am
by bazman
Nice one smiffy :D
Put my mind at rest, don't want to build it and blow the fecker up due to too high a ratio :oops: ;)