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Total 9 documents matching your query.

1. Overdrive Setup for Racing (score: 1): Author: Larry Young <cartravel@pobox.com>; Date: Wed, 15 May 2002 17:56:07 -0500; A couple months ago, I knew nothing about overdrives, but now I'm in the final stages of rebuilding an overdrive for my TR3 race car. It has the early style large accumulator, which is supposed to gi; /html/fot/2002-05/msg00141.html (7,878 bytes)
2. Re: Overdrive Setup for Racing (score: 1): Author: "Peter Vucinic" <vucinic@b140.aone.net.au>; Date: Thu, 16 May 2002 11:47:49 +1000; I might buy into this topic, as I have been thinking about the very same thing. I have a TR4 with a rebuilt OD that is running at 650PSI. The only trouble is the OD will not engage! The electrical c; /html/fot/2002-05/msg00142.html (9,166 bytes)
3. Re: Overdrive Setup for Racing (score: 1): Author: WEmery7451@aol.com; Date: Wed, 15 May 2002 23:02:24 EDT; << I've currently got it set up to run at about 390 psi, i.e. slightly higher than standard specs. >> Group 44 (Michael Barrette) use to say 650 psi by shimming the accumulator spring.; /html/fot/2002-05/msg00144.html (7,339 bytes)
4. Re: Overdrive Setup for Racing (score: 1): Author: WEmery7451@aol.com; Date: Wed, 15 May 2002 23:40:12 EDT; << adjusted the top cover switches; >> - I have never seen anyone use the top cover switches. - I assume that you removed the inner four of the eight springs between the front plate and the overdrive; /html/fot/2002-05/msg00145.html (7,816 bytes)
5. Re: Overdrive Setup for Racing (score: 1): Author: Larry Young <cartravel@pobox.com>; Date: Thu, 16 May 2002 12:19:42 -0500; The hole in the seat for the operating valve is 1/4 inch diameter, so the force exerted by 650 psi of pressure is about 3 lbs. I believe the spring is rated at 5 or 6 lbs. Going from 450 to 650 incr; /html/fot/2002-05/msg00147.html (7,807 bytes)
6. Re: Overdrive Setup for Racing (score: 1): Author: Larry Young <cartravel@pobox.com>; Date: Thu, 16 May 2002 12:28:13 -0500; I found some other good info at www.team.net/www/healey/tech/. The Healey guys like to run 600 psi also, but they reportedly tear up a lot of overdrives too. I think I'm going to shoot for 450 to 500; /html/fot/2002-05/msg00148.html (7,583 bytes)
7. RE: Overdrive Setup for Racing (score: 1): Author: Randall Young <ryoung@NAVCOMTECH.COM>; Date: Thu, 16 May 2002 10:37:40 -0700; Larry, I think your math is a bit off here. .25" diameter = .125" radius = roughly .05 square inches. .05 * 650 ~= 30 pounds, not 3 pounds. Randall; /html/fot/2002-05/msg00149.html (7,401 bytes)
8. Re: Overdrive Setup for Racing (score: 1): Author: Larry Young <cartravel@pobox.com>; Date: Thu, 16 May 2002 15:29:45 -0500; Oops, always have a problem with those decimal points! That means a 10 lb increase, 25 to 35 lbs (5 lb spring plus 450 to 650 psi).; /html/fot/2002-05/msg00150.html (7,626 bytes)
9. Re: Overdrive Setup for Racing (score: 1): Author: "John Kipping" <johnkipping@inet.net.nz>; Date: Fri, 17 May 2002 10:21:10 +1200; Although I'm not an expert on 'A' type overdrives I can give you some pointers. Overdrive pressure should be sufficient to allow the unit to engage when full torque is being transmitted (it is this; /html/fot/2002-05/msg00151.html (8,894 bytes)

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