- 1. Idle speed and timing (score: 1)
- Author: "Tony Woodruff" <tonyw@mailmedia.com>
- Date: Mon, 25 Oct 1999 10:13:17 -0700
- The Haynes manual says that for my 1967 B the timing should be set to 14 degrees advanced at 600 RPM with the vacuum advance disconnected. Does anybody else have a problem getting their car to even k
- /html/mgs/1999-10/msg01152.html (7,916 bytes)
- 2. Re: Idle speed and timing (score: 1)
- Author: "Andrew B. Lundgren" <lundgren@iname.com>
- Date: Mon, 25 Oct 1999 20:27:04 -0600 (MDT)
- Yep, rumor is most don't like to run that slow. I still have my idle set at about 650-700, but it lopes a bit. (1/4 race cam, so that is to be expected.) I borrowed a timing light and did dynamically
- /html/mgs/1999-10/msg01191.html (8,562 bytes)
- 3. Re: Idle speed and timing (score: 1)
- Author: Skye Poier <skye@ffwd.com>
- Date: Mon, 25 Oct 1999 19:43:46 -0700
- My '66 purrs at 600 rpm. I'd start looking for distributor shaft slop, air leaks around the carbs, and maintenance parts that should have been replaced a long time ago. Skye -- 1966 MGB The MGB Exper
- /html/mgs/1999-10/msg01193.html (8,000 bytes)
- 4. Re: Idle speed and timing (score: 1)
- Author: Thames800@aol.com
- Date: Mon, 25 Oct 1999 22:51:23 EDT
- What is considered 1/4 race? I have a 280 degree duration cam with about .410 lift. When I bought it I had my choice of cams.. 270, 280, 290 degree duration with various lifts. I'v heard the term 1/4
- /html/mgs/1999-10/msg01195.html (7,834 bytes)
- 5. Re: Idle speed and timing (score: 1)
- Author: Max Heim <mvheim@studiolimage.com>
- Date: Tue, 26 Oct 1999 08:40:26 -0700
- Well, mine will idle at 600 on a good day <g>. I have it set at about 700 now. But I agree, whenever I mess with the carbs at all it takes hours of fiddling to get the idle speed back down. There see
- /html/mgs/1999-10/msg01206.html (9,591 bytes)
- 6. Re: Idle speed and timing (score: 1)
- Author: Max Heim <mvheim@studiolimage.com>
- Date: Tue, 26 Oct 1999 08:40:29 -0700
- Well, you know, I wouldn't expect a smooth, low speed idle with those kind of modifications, either. Most of the performance cams that I've seen come with some kind of disclaimer about rough idle. Bu
- /html/mgs/1999-10/msg01207.html (8,670 bytes)
- 7. Re: Idle speed and timing (score: 1)
- Author: Susan and John Roper <vscjohn@huntnet.net>
- Date: Tue, 26 Oct 1999 11:12:36 -0500
- I think that 3/4 race is an antiquated term, dating back to the flat motors. Duration as you quote it is primarily a sales device. Of more importance is duration at .050, which is where you would che
- /html/mgs/1999-10/msg01209.html (8,537 bytes)
- 8. Re: Idle speed and timing (score: 1)
- Author: "Paul Hunt" <paul.hunt1@virgin.net>
- Date: Tue, 26 Oct 1999 16:26:51 +0100
- The recommended idle speed increased over the years - from 500 up to 900 and possibly higher - as the spec changed and emissions crept in. My UK 73 roadster needs all of its 700-800, for example. Wit
- /html/mgs/1999-10/msg01213.html (8,781 bytes)
- 9. Re: Idle speed and timing (score: 1)
- Author: gbaker@customcpu.com (Baker, G.)
- Date: Tue, 26 Oct 1999 10:51:05 -0800
- "I think that 3/4 race is an antiquated term, dating back to the flat motors." John, I assume your referring to flatheads but I still don't get the connection. I've always wondered about the 1/4, 1/2
- /html/mgs/1999-10/msg01220.html (7,631 bytes)
- 10. Re: Idle speed and timing (score: 1)
- Author: richard.arnold@juno.com
- Date: Tue, 26 Oct 1999 17:25:59 -0500
- Picture cam profiles as being on scale from 0 to 1 with points at 0.25 (1/4), 0.50 (1/2), and 0.75 (3/4). Zero is a stock cam profile, and 1 is a full race. A cam that has more than a stock profile,
- /html/mgs/1999-10/msg01225.html (7,862 bytes)
- 11. Re: Idle speed and timing (score: 1)
- Author: Susan and John Roper <vscjohn@huntnet.net>
- Date: Tue, 26 Oct 1999 20:27:56 -0500
- Gregg, I've never heard of 1/4 or 1/2 race cams. In the golden age, the 50s, we used to talk about 3/4 race and full race, but those terms had no specific meaning in terms of duration or lift. John
- /html/mgs/1999-10/msg01228.html (7,923 bytes)
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