Rod Stewart
Active Member
I have read a few threads on the forum regarding static compression ratios for various engine diplacements, head volumes,etc..
I still have a few lingering doubts, that I figured the experts on the forum could likley answer, so here goes:
I see references to .030 and .045 head gaskets. Are all HD head gaskets .045"? Are there other aftermarket thicknesses besides .030"?
I understand that original TC-88 heads are nominal 85cc volume, with actual values falling in the range of 83-87cc.
When the TC-96 came out, did it use the same heads, or something different?
The TC-103 and 110 engines use a 96cc head, correct?
Are there any other common HD head volumes in use, other than milled heads?
My 2004 FLHTCI has a big bore kit 95", SE 203 cams, V&H true dual exhaust, and K&N air cleaner. When measuring my compression I get 160/165 psi, which I thought seemed kind of high for a static 9.2 compression ratio. Does this sound about right? I used a standard compression tester and ran it through 5 or 6 compression strokes until the reading peaked. This is how I have always done a compression test.
Thanks for any comments and feedback.
Rod
I still have a few lingering doubts, that I figured the experts on the forum could likley answer, so here goes:
I see references to .030 and .045 head gaskets. Are all HD head gaskets .045"? Are there other aftermarket thicknesses besides .030"?
I understand that original TC-88 heads are nominal 85cc volume, with actual values falling in the range of 83-87cc.
When the TC-96 came out, did it use the same heads, or something different?
The TC-103 and 110 engines use a 96cc head, correct?
Are there any other common HD head volumes in use, other than milled heads?
My 2004 FLHTCI has a big bore kit 95", SE 203 cams, V&H true dual exhaust, and K&N air cleaner. When measuring my compression I get 160/165 psi, which I thought seemed kind of high for a static 9.2 compression ratio. Does this sound about right? I used a standard compression tester and ran it through 5 or 6 compression strokes until the reading peaked. This is how I have always done a compression test.
Thanks for any comments and feedback.
Rod