Hello,
I just purchased a car withe a european CIS 2.7 litre engine (1975). The unit has domed pistons.
Can anyone tell me how much HP this unit might have?
Cheers
Full Version: European 2.7 Litre CIS
911/41 - 150 hp
911/42 - 175 hp
911/42 - 175 hp
I have the same engine. The stock CIS pistons are semi domed and are necessary to use the CIS as they help keep the fuel atomized. Stock setup is about 165hp. If you change to fully domed pistons which ups the CR, and throw on some carbs I have heard of 225hp
QUOTE(Dr Evil @ Nov 6 2007, 10:27 PM) 
I have the same engine. The stock CIS pistons are semi domed and are necessary to use the CIS as they help keep the fuel atomized. Stock setup is about 165hp. If you change to fully domed pistons which ups the CR, and throw on some carbs I have heard of 225hp
I was wondering if you were going to chime in.
911/43 - 165 hp - USA 911S/C
911/44 - 160 hp - California - 911S/C
911/46 - 150 hp - Sportomatic
911/47 - 175 hp - 911S Sportomatic
911/48 - 165 hp - 911S USA Sportomatic
911/49 - 160 hp - 911S/C California Sportomatic
911/44 - 160 hp - California - 911S/C
911/46 - 150 hp - Sportomatic
911/47 - 175 hp - 911S Sportomatic
911/48 - 165 hp - 911S USA Sportomatic
911/49 - 160 hp - 911S/C California Sportomatic
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