- 1. Are u kidding me??? (score: 1)
- Author: RazorBobSr@aol.com
- Date: Tue, 22 Feb 2005 15:50:20 EST
- I have a head just about to come out of the shop,this was a stock head,I had is milled to give 35 CC combustion chambers and from stock that meens 135 tho off the head.My plan was to up CR to 10.1 or
- /html/6pack/2005-02/msg00298.html (7,601 bytes)
- 2. RE: Are u kidding me??? (score: 1)
- Author: "Hugh Barber" <tr6nut@sbcglobal.net>
- Date: Tue, 22 Feb 2005 20:39:51 -0800
- According to Mr Kasner's Competition Preparation Manual, you may have milled a wee bit too much from your cylinder head. The text from the book is as follows: "The cylinder head gasket, when compres
- /html/6pack/2005-02/msg00303.html (9,687 bytes)
- 3. Re: Are u kidding me??? (score: 1)
- Author: "Greg Dito" <dito9561@bellsouth.net>
- Date: Sun, 22 Feb 2004 23:50:12 -0500
- I don't know whether this is an early or late head, but 35CC chamber volume is pushing somewhere around 11.5:1 CR with standard bore. My head has 44CC which puts it around 9.9:1 with +.040 pistons.
- /html/6pack/2005-02/msg00304.html (7,534 bytes)
- 4. Re: Are u kidding me??? (score: 1)
- Author: tr6taylor@webtv.net (Sally or Dick Taylor)
- Date: Tue, 22 Feb 2005 23:44:54 -0800
- Razor--Others have covered the head and the probable C.R. as the result of the milling, so I'll take a stab at what's left. You may have to use shorter pushrods to get the rocker geometry correct, an
- /html/6pack/2005-02/msg00307.html (9,496 bytes)
- 5. RE: Are u kidding me??? (score: 1)
- Author: "Navarrette, Vance" <vance.navarrette@intel.com>
- Date: Tue, 22 Feb 2005 14:02:26 -0800
- Depends on what you do with your cam. If you go with a regrind, then you will probably be fine, as a regrind has a smaller base circle that in effect reduces the length of the push rod. I shaved my
- /html/6pack/2005-02/msg00311.html (9,361 bytes)
- 6. Re: Are u kidding me??? (score: 1)
- Author: Don Malling <dmallin@attglobal.net>
- Date: Wed, 23 Feb 2005 09:51:32 -0500
- Hi Hugh, What sort of gas are you using at 10.5:1? I was under the impression that 9.5:1 was about max for 93 octane pump gas (R+M)/2 Don Malling
- /html/6pack/2005-02/msg00315.html (7,945 bytes)
- 7. Re: Are u kidding me??? (score: 1)
- Author: "Kai M. Radicke" <kradicke@wishboneclassics.com>
- Date: Wed, 23 Feb 2005 14:28:27 -0500
- I also agree with Hugh's experience. We did a customer's motor last Fall with just under 10.5:1 CR and experienced no problems running the lump on machine shop's engine dyno and the motor has given
- /html/6pack/2005-02/msg00321.html (9,317 bytes)
- 8. RE: Are u kidding me??? (score: 1)
- Author: "Hugh Barber" <tr6nut@sbcglobal.net>
- Date: Wed, 23 Feb 2005 18:03:43 -0800
- I use premium pump gas. The key is that I am not running a stock camshaft. You are correct that with a stock cam that about 9.5 to 1 is as high as you can go because with the stock cams, the cylinder
- /html/6pack/2005-02/msg00331.html (9,180 bytes)
- 9. Re: Are u kidding me??? (score: 1)
- Author: Don Malling <dmallin@attglobal.net>
- Date: Wed, 23 Feb 2005 21:25:48 -0500
- Hi Hugh, My TR250 cam will be 274 seat duration, .426 value lift with 1.55:1 Roller Rockers, and 110.5 Lobe Separation. I already have the cam. I'm also using Group 44 Falcon Headers. How can I get a
- /html/6pack/2005-02/msg00332.html (9,843 bytes)
- 10. RE: Are u kidding me??? (score: 1)
- Author: "Hugh Barber" <tr6nut@sbcglobal.net>
- Date: Wed, 23 Feb 2005 19:02:13 -0800
- Your best bet is to contact the folks who made your cam and ask for their recommendations for both compression ratio and valve springs. As a ballpark figure, comparing it to the Triumph S-2 (282 dur
- /html/6pack/2005-02/msg00333.html (8,985 bytes)
- 11. FW: Are u kidding me??? (score: 1)
- Author: "Hugh Barber" <tr6nut@sbcglobal.net>
- Date: Wed, 23 Feb 2005 19:16:40 -0800
- I have been thinking about your dilemma today and I think I overlooked something that might mean your problem is not as bad as first thought. When your head was cc'ed, the machinist might not have c
- /html/6pack/2005-02/msg00335.html (9,039 bytes)
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