To: | "'James Henningsen'" <trguy75@gmail.com>, "'Tony Drews'" <tony@tonydrews.com> |
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Subject: | Re: [TR] SU H6 Carb Part Need |
From: | "Randall" <tr3driver@ca.rr.com> |
Date: | Tue, 18 Sep 2018 15:58:42 -0400 |
Cc: | triumphs@autox.team.net |
Delivered-to: | mharc@autox.team.net |
Delivered-to: | triumphs@autox.team.net |
References: | <02f701d44e1c$d6307de0$829179a0$@gmail.com> <008301d44ebf$8d50a660$a7f1f320$@net> <5dd8237b-8fa9-4d9b-4621-5640113e16b8@tonydrews.com> <52C0DF19-CFE5-49E6-8DA3-F2302B97443B@gmail.com> |
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I don't have the link handy, but somewhere out there is a video, done by John Twist IIRC, showing the "drop test". Basically, you plug the holes in the bottom of the piston, push it to the top of the dome, and then time how long it takes to fall out. (Obviously catching it as it does.) There was a range of acceptable times (something like 3 to 7 seconds, don't recall exactly); but the main point was that if you have managed to mix them up between a pair of carbs, one will fall much faster than the other. Of course, too tight is rarely a problem unless the dome is damaged. If there is a tight spot, it can be identified with a little machinist's dye, then rubbed out with very fine sandpaper. The domes and pistons are very soft, so go slowly and try the fit often. I've never had to reduce the diameter of a piston; but it should be easy to accomplish the same way. -- Randall ** triumphs@autox.team.net ** Archive: http://www.team.net/pipermail/triumphs http://www.team.net/archive |
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