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1. Valve clearances - OHC (score: 1): Author: Unknown; Date: Fri, 24 Apr 1998 15:27:24 +1000 (EST); James (et al), I thought I'd address this to you, based on your confident treatment of the subject, previously, but it's open to anybody. I've been pondering the reduction in performance and rougher; /html/triumphs/1998-04/msg01763.html (8,618 bytes)
2. Re: Valve clearances - OHC (score: 1): Author: Unknown; Date: Fri, 24 Apr 1998 02:52:42 -0400; This difference might be accounted for by the difference between setting the clearances with a tool versus will feeler gauges. Of course, perhaps not with that crazy engine. It's the dishing of the r; /html/triumphs/1998-04/msg01765.html (8,882 bytes)
3. Re: Valve clearances - OHC (score: 1): Author: Unknown; Date: Fri, 24 Apr 1998 08:19:15 +0000; You've asked the wrong chap about OHC non rocker heads. This could be a pain I must admit. If the valves are out of clearence then they do need to be adjusted. I think you have to shim up or down the; /html/triumphs/1998-04/msg01767.html (8,604 bytes)
4. Re: Valve clearances - OHC (score: 1): Author: Unknown; Date: Mon, 27 Apr 1998 12:49:59 +1000 (EST); Thanks for your reply. I would like to install a manifold vacuum gauge, but all my inlet runners are separate (for the Webers), so I'd need to drill and tap 4 holes, creating more opportunities for; /html/triumphs/1998-04/msg01880.html (7,906 bytes)
5. Re: Valve clearances - OHC (score: 1): Author: Unknown; Date: Mon, 27 Apr 1998 07:46:50 +0000; Oh, you could put on 4 vacuum gauges, if you could find mini ones, say 1 inch in diameter each, lined up under the dash. It could tell you the balance, condition, tune of each of the cylinders. -- Ja; /html/triumphs/1998-04/msg01893.html (7,724 bytes)
6. RE: Valve clearances - OHC (score: 1): Author: Unknown; Date: Mon, 27 Apr 1998 12:08:55 +0100; I think you are VERY optimistic about that. What it tells you is no more than the airflow or indeed vacuum, everything else is interpretation and has to be taken with a good pinch of ...well you know; /html/triumphs/1998-04/msg01900.html (7,657 bytes)
7. RE: Valve clearances - OHC (score: 1): Author: Unknown; Date: Tue, 28 Apr 1998 12:27:18 +1000 (EST); Gernot, Point taken. I'd like to get a proper leak-down test, to see if I can eliminate rings as a problem (and even find out which valves, if any, are bad). Can't seem to find anyone with the equipm; /html/triumphs/1998-04/msg01954.html (8,044 bytes)
8. RE: Valve clearances - OHC (score: 1): Author: Unknown; Date: Tue, 28 Apr 1998 14:11:46 +0100; As you will know the usual leak down test is just a compression test with oil injected in the cylinders. This should in theory give the distinction between leaking valves and worn piston rings (blow-; /html/triumphs/1998-04/msg01982.html (9,013 bytes)
9. Re: Valve clearances - OHC (score: 1): Author: Unknown; Date: Tue, 28 Apr 1998 22:19:57 -0400; I wouldn't really call that "the usual leak down test", although it is a useful test. The usual leak down test is well... uh.... a leak down test, where compressed air is fed to the cylinder via the; /html/triumphs/1998-04/msg02023.html (8,372 bytes)
10. RE: Valve clearances - OHC (score: 1): Author: Unknown; Date: Thu, 30 Apr 1998 11:46:39 +1000 (EST); My previous attempt to modify a spark plug was disastrous, but I'll give it another go. Failing that, there's always the lathe. Allen Nugent Graduate School of Biomedical Engineering University of N; /html/triumphs/1998-04/msg02099.html (7,681 bytes)
11. Re: Valve clearances - OHC (score: 1): Author: Unknown; Date: Thu, 30 Apr 1998 12:22:23 +1000 (EST); Trevor, That confirms what I was told. Funnily, none of the shops I have spoken to know anyone with the equipment, which I could make myself with a lathe, some rubber tubing, a pressure gauge, and a; /html/triumphs/1998-04/msg02110.html (7,956 bytes)
12. Re: Valve clearances - OHC (score: 1): Author: Unknown; Date: Wed, 29 Apr 1998 22:32:14 -0400; An engine makes hundreds of PSI, I don't think you could blow anything if you tried. However, it doesn't take a lot of psi. Usually a leak down test is only done on a cylinder with low compression, y; /html/triumphs/1998-04/msg02113.html (8,439 bytes)

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