angel
Enthusiast
- Messages
- 2,444
- Location
- Athens, Greece
Last week I took apart a 956cc engine (C1C), in order to enlarge it to 1108cc by fitting 70 mm pistons/liners.
Even by looking at the cylinder head, the combustion chambers seemed to be very deep. I measured their volume to be 36cc, and after calculation, the compression ratio that this engine will have was found to be around 7,35:1 (with flat top pistons, as it is the only type fitted to 1108cc engines). Even the low compression F6 had 8,5:1 ratio, always with the same pistons.
So, here go my questions: Did the 956cc, 1108cc-F6 and 1108cc-GTL engines all have different heads? Has anyone done a direct comparison between these?
Even by looking at the cylinder head, the combustion chambers seemed to be very deep. I measured their volume to be 36cc, and after calculation, the compression ratio that this engine will have was found to be around 7,35:1 (with flat top pistons, as it is the only type fitted to 1108cc engines). Even the low compression F6 had 8,5:1 ratio, always with the same pistons.
So, here go my questions: Did the 956cc, 1108cc-F6 and 1108cc-GTL engines all have different heads? Has anyone done a direct comparison between these?