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Total 16 documents matching your query.

1. measuring piston rise (score: 1): Author: Larry Colen <lrcar@red4est.com>; Date: Mon, 10 Mar 2003 14:38:01 -0800; The application is my MGB with an HP supercharger. I'm simultaneously trying to get things dialed in and learn about what is happening with the motor, fuel/air ratios, power etc. I was able to sort o; /html/british-cars/2003-03/msg00034.html (9,049 bytes)
2. Re: measuring piston rise (score: 1): Author: Dave & Marlene <rusd@velocitus.net>; Date: Mon, 10 Mar 2003 16:23:12 -0700; I tried it once on a supercharged AH Sprite. With the damper cap removed, I put a flag on the piston. With the hood removed you could watch the flag position while driving. It is best to have an obs; /html/british-cars/2003-03/msg00035.html (9,957 bytes)
3. RE: measuring piston rise (score: 1): Author: Randall Young <ryoung@navcomtech.com>; Date: Mon, 10 Mar 2003 16:07:12 -0800; I hate to be a wet blanket, but it seems to me that the vacuum in the dome would be fairly constant and also quite low. The underside of the piston is basically at atmospheric pressure (vents throug; /html/british-cars/2003-03/msg00036.html (9,244 bytes)
4. Re: measuring piston rise (score: 1): Author: Larry Colen <lrcar@red4est.com>; Date: Mon, 10 Mar 2003 16:52:11 -0800; I did not mean to add another vent hole. I meant to run a vacuum line from the top of the damper to some sort of a vacuum guage, ideally an electronic one so that I could datalog the output. Modulo t; /html/british-cars/2003-03/msg00038.html (9,553 bytes)
5. Re: measuring piston rise (score: 1): Author: "Bob Nogueira" <nogera@worldnet.att.net>; Date: Mon, 10 Mar 2003 23:51:49 -0600; Just off the top of my head ( so it probably wouldn't work) but why not remove the 'lifting pin and attach a wire to the piston with the wire coming out of the lifting pin hole. The wire could run i; /html/british-cars/2003-03/msg00046.html (9,038 bytes)
6. Re: measuring piston rise (score: 1): Author: DEVierling@aol.com; Date: Tue, 11 Mar 2003 02:11:34 EST; OK, call me silly, but I like Dave Russell's "flag on the piston" idea. Seems like the simplest. If you can't get a helper to watch - maybe you could mount a video camera somewhere on the engine rec; /html/british-cars/2003-03/msg00048.html (11,773 bytes)
7. Re: measuring piston rise (score: 1): Author: Barney Gaylord <barneymg@MGAguru.com>; Date: Tue, 11 Mar 2003 01:48:47 -0600; Nope, it's stil there. Try this: http://mgaguru.com/offtopic Barney Gaylord 1958 MGA with an attitude http://mgaguru.com /// british-cars@autox.team.net mailing list /// or try http://www.team.net/cg; /html/british-cars/2003-03/msg00049.html (8,475 bytes)
8. Re: measuring piston rise (score: 1): Author: Larry Colen <lrcar@red4est.com>; Date: Sat, 22 Mar 2003 11:41:24 -0800; I just realized that the HIF 6 in this application seems to have a vacuum port that is plugged off. If it leads to where I think it does, it gets the vacuum from between the butterfly and the piston,; /html/british-cars/2003-03/msg00074.html (9,230 bytes)
9. RE: measuring piston rise (score: 1): Author: "Randall Young" <Ryoung@navcomtech.com>; Date: Sat, 22 Mar 2003 12:11:36 -0800; Unless a HIF is quite a bit different than the earlier models, the piston gets it's vacuum signal directly from the venturi, which should be quite a bit more than the vacuum between the piston and t; /html/british-cars/2003-03/msg00075.html (9,501 bytes)
10. Re: measuring piston rise (score: 1): Author: Larry Colen <lrcar@red4est.com>; Date: Sat, 22 Mar 2003 12:52:49 -0800; I thought that that vacuum, was what sucked the fuel up, but that the backwards facing ports in the bottom of the piston were past the bridge and in the area between the bridge (venturi) and the thro; /html/british-cars/2003-03/msg00076.html (11,572 bytes)
11. Re: measuring piston rise (score: 1): Author: Dave & Marlene <rusd@velocitus.net>; Date: Sat, 22 Mar 2003 13:55:38 -0700; You are correct, the top of the piston gets vacuum from between the butterfly & the piston. It is designed to maintain a CONSTANT velocity through the carb throat. This velocity is determined by the; /html/british-cars/2003-03/msg00077.html (10,708 bytes)
12. Re: measuring piston rise (score: 1): Author: Dave & Marlene <rusd@velocitus.net>; Date: Sat, 22 Mar 2003 14:19:26 -0700; Due to the shape of the "jet bridge" the piston vacuum pickup point is actually in the open space between the venturi & the butterfly & in effect NOT in the venturi. Dave Russell /// british-cars@aut; /html/british-cars/2003-03/msg00078.html (8,525 bytes)
13. Re: measuring piston rise (score: 1): Author: Dave & Marlene <rusd@velocitus.net>; Date: Sat, 22 Mar 2003 14:34:27 -0700; It appears that you may be using the carb way outside of its design limits. Eg. carb too small for the amount of air that you are trying to put through it. A larger carb might put things back in a w; /html/british-cars/2003-03/msg00079.html (9,028 bytes)
14. RE: measuring piston rise (score: 1): Author: "Randall Young" <Ryoung@navcomtech.com>; Date: Sat, 22 Mar 2003 13:36:10 -0800; Could be, on a HIF. On H and HS models the ports are in the bottom of the piston, and overlap the trailing edge of the bridge, which I believe means they still see at least partially the venturi-amp; /html/british-cars/2003-03/msg00080.html (11,044 bytes)
15. Re: measuring piston rise (score: 1): Author: Larry Colen <lrcar@red4est.com>; Date: Sat, 22 Mar 2003 16:09:22 -0800; Let's hear it for the empirical method. I took a (diagnostic) vacuum guage and connected it to the port on the side of the SU. I suspect maybe that it is for the crankcase breather. Anyways what the; /html/british-cars/2003-03/msg00082.html (8,895 bytes)
16. Re: measuring piston rise (score: 1): Author: "Robin Berens." <rberens@sbcglobal.net>; Date: Sun, 23 Mar 2003 05:30:37 -0800; This is the most precise description of the operation of the SU carb that I have ever seen! I started with an MGD (1932) (single SU which if I remember correctly had NO spring) and progressed through; /html/british-cars/2003-03/msg00085.html (11,884 bytes)

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