Compression changes |
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Compression changes |
-JR- |
Dec 16 2004, 07:42 PM
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#1
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Life goes faster at 150MPH Group: Members Posts: 276 Joined: 12-May 04 From: Victoria BC Canada Member No.: 2,055 |
Having never worked on a air cooled engine before I'm wondering if it's possible to increase compression of these motors in the same way you do with a conventional watercooled engine.
IE - Head shaving or piston changes? I've got all the bits from a 2L transporter engine that I'm going to put on my 914 EC case motor. However this will mean I will only have 7.3 : 1 compression still. I'd "like" to see it around the 9.0 region but I'm not sure if I can accomplish this without pistons. Has anyone got some feedback? Can I pull this off? Thanks! |
-JR- |
Dec 17 2004, 07:14 PM
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#2
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Life goes faster at 150MPH Group: Members Posts: 276 Joined: 12-May 04 From: Victoria BC Canada Member No.: 2,055 |
Thanks Dave, I've read Tom Slider's web page on compression in which he credits you for some of the feedback...
Type 4 Engine compression So having said all that I'm leaning towards having the cylinders milled. But as you say I will have to calculate the volume on my setup to know just how far I have to go. After reading that page I am also thinking that a ratio of about 8.5:1 to 8.8:1 might also be more appropriate. James |
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