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1. Hot Cam question for discussion (score: 1): Author: "Steve B. Gerow" <steveg@abrazosdata.com>; Date: Sun, 16 Jan 2005 19:01:53 -0800; Saturday I heard from someone who should know (Kurt Tanner) that a Mk 1 3000 cam in good shape can be ground to 290 degrees with all other specs per stock and that that, in combination with strong v; /html/healeys/2005-01/msg00309.html (8,789 bytes)
2. RE: Hot Cam question for discussion (score: 1): Author: "rjhco" <rjh@hockertlaw.us>; Date: Sun, 16 Jan 2005 21:46:58 -0600; Welch's original race cam is 300 degrees and is supposed to reflect the original factory rally car cam (4,000 to 6,000 rpm band). Not much difference from 290. What ratio rocker arm is being used wit; /html/healeys/2005-01/msg00312.html (7,919 bytes)
3. RE: Hot Cam question for discussion (score: 1): Author: "Malaney, David W" <DavidWMalaney@eaton.com>; Date: Mon, 17 Jan 2005 11:03:12 -0500; Slightly off this topic, but .... inquiring minds need to know ..... who is Kurt Tanner? Pardon my ignorance. I see his name mentioned. I hear that he has some Healeys he has restored up on the Barre; /html/healeys/2005-01/msg00319.html (9,758 bytes)
4. RE: Hot Cam question for discussion (score: 1): Author: "Greg Wilkinson" <gregwilkinson@adelphia.net>; Date: Mon, 17 Jan 2005 19:18:22 -0800; Hi Steve, Something is definitely missing in that equation. If only the duration is increased, why would you need to port the block? Same holds for the stronger springs. If the lift is the same over; /html/healeys/2005-01/msg00335.html (9,714 bytes)
5. Re: Hot Cam question for discussion (score: 1): Author: Eric (Rick) Wilkins <wilko2@cox.net>; Date: Tue, 18 Jan 2005 09:40:04 -0800; Right. If only the timing is changed you don't need to mess with anything else. On these longer cams that get you the power you need, the lift is also changed to something like .425". If the lift isn; /html/healeys/2005-01/msg00339.html (9,201 bytes)
6. Re: Hot Cam question for discussion (score: 1): Author: RAHosmer@aol.com; Date: Tue, 18 Jan 2005 12:48:49 EST; Please help me, I'm lost here - what would you (have to) cut on the block, due to a milled head? Notching pistons I could understand. Dick Hosmer 62BT7; /html/healeys/2005-01/msg00341.html (7,856 bytes)
7. Re: Hot Cam question for discussion (score: 1): Author: Eric (Rick) Wilkins <wilko2@cox.net>; Date: Tue, 18 Jan 2005 09:57:00 -0800; One valve on a Healey (and many other cars) is actually over the edge of the cylinder. Small notches need to be cut on the top edge to clear the valve. Go here for a pic of an MGA block with cuts: ht; /html/healeys/2005-01/msg00343.html (8,270 bytes)
8. Re: Hot Cam question for discussion (score: 1): Author: Dave & Marlene <rusd@velocitus.net>; Date: Tue, 18 Jan 2005 12:08:06 -0700; I think what he is actually refering to is relieving the top inside edge of the cylinder block to enhance valve flow inside the cylinder. If the duration is increased for the same lift, the valve op; /html/healeys/2005-01/msg00349.html (10,640 bytes)
9. Re: Hot Cam question for discussion (score: 1): Author: Dave & Marlene <rusd@velocitus.net>; Date: Tue, 18 Jan 2005 12:24:14 -0700; Hi Dick, If the cam lift is increased too much, the intake valve will collide with the top inside edge of the cylinder. The edge of the valve actually overlaps the cylinder. Dave Russell; /html/healeys/2005-01/msg00351.html (8,095 bytes)
10. RE: Hot Cam question for discussion (score: 1): Author: "Greg Wilkinson" <gregwilkinson@adelphia.net>; Date: Tue, 18 Jan 2005 19:40:43 -0800; Hi Dave, I hope that it's actually for the exhaust valves that the block needs relieving. That's what my machinist did. See photo. Best Wishes, Greg --Original Message-- Hi Dick, If the cam lift is i; /html/healeys/2005-01/msg00362.html (8,511 bytes)
11. Re: Hot Cam question for discussion (score: 1): Author: Dave & Marlene <rusd@velocitus.net>; Date: Wed, 19 Jan 2005 01:01:54 -0700; Yes, you are correct. Your block looks very good. The head gaskets are actually relieved in this area which gives a good pattern for where to cut. You don't want to cut so deep that the top ring is; /html/healeys/2005-01/msg00363.html (8,830 bytes)
12. RE: Hot Cam question for discussion (score: 1): Author: "Greg Wilkinson" <gregwilkinson@adelphia.net>; Date: Wed, 19 Jan 2005 23:01:05 -0800; Hi Dave, I'll agree with you on the enhanced gas flow but I'll still maintain my opinion on valve speed. Total duration (the valve leaves the seat and then returns to the seat in crank degrees) does; /html/healeys/2005-01/msg00379.html (11,458 bytes)
13. Re: Hot Cam question for discussion (score: 1): Author: "Bob Spidell" <bspidell@comcast.net>; Date: Thu, 20 Jan 2005 07:19:31 -0800; Aren't there two measurments for cam duration? One's called "advertised" (I think) and the other is measured from 0.050" of lift on both front and rear slope (forget the name for that, if there is on; /html/healeys/2005-01/msg00382.html (9,170 bytes)

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