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1. Blue smoke and good compression (score: 1): Author: Unknown; Date: Mon, 18 Nov 2002 13:06:06 -0500; Those two things don't usually go together so I was wondering if there is a "typical" reason why an engine with good and consistent compression (~145) would blow blue smoke at the upper rpms? It woul; /html/triumphs/2002-11/msg00597.html (7,999 bytes)
2. Re: Blue smoke and good compression (score: 1): Author: Unknown; Date: Mon, 18 Nov 2002 15:10:35 -0500; Worn valve guides? -- Jim Muller jimmuller@pop.rcn.com '80 Spitfire, '70 GT6+ /// triumphs@autox.team.net mailing list /// or try http://www.team.net/cgi-bin/majorcool /// Archives at http://www.team; /html/triumphs/2002-11/msg00600.html (8,028 bytes)
3. RE: Blue smoke and good compression (score: 1): Author: Unknown; Date: Mon, 18 Nov 2002 16:23:37 -0500; Worn valve guides will cause smoking and not effect compression. High rpm will result in more oil in the top of the engine, and more oil around the guides. -Walt 74 TR6 Those two things don't usually; /html/triumphs/2002-11/msg00604.html (8,913 bytes)
4. RE: Blue smoke and good compression (score: 1): Author: Unknown; Date: Mon, 18 Nov 2002 17:23:26 -0500; OK, first of all thank you for your opinions. BUT, I need to pose another question so I can get's me a little "edumaction." Basically, I have a question as to whether the blue smoke is being caused b; /html/triumphs/2002-11/msg00607.html (10,377 bytes)
5. RE: Blue smoke and good compression (score: 1): Author: Unknown; Date: Mon, 18 Nov 2002 15:10:44 -0800; Well, the question becomes under what conditions are your rpms elevated? If you're talking about freeway cruise, then the manifold vacuum is higher than at idle, and the increased oil pressure means; /html/triumphs/2002-11/msg00608.html (8,575 bytes)
6. RE: Blue smoke and good compression (score: 1): Author: Unknown; Date: Mon, 18 Nov 2002 17:31:23 -0600; I think that old rascal, Bernoulli is at work here. In a dynamic situation such as an engine running at high rpm, the engine is pulling the maximum volume of air through the inlet tract. In that the; /html/triumphs/2002-11/msg00609.html (10,264 bytes)
7. Re: Blue smoke and good compression (score: 1): Author: Unknown; Date: Mon, 18 Nov 2002 23:59:34 -0000; The most common diagnoses for guides is blue on first start-up in the morning, oil running down the guides overnight and blue on deceleration, high vacuum and lots of oil around the top due to eleva; /html/triumphs/2002-11/msg00612.html (10,160 bytes)
8. RE: Blue smoke and good compression (score: 1): Author: Unknown; Date: Mon, 18 Nov 2002 19:02:44 -0500; Here's a guess. Depending on the state of your PCV system, higher rpms create more pressure in the crankcase, and thus higher pressure at the tops of the valves via the pushrod tubes, thus pushing mo; /html/triumphs/2002-11/msg00613.html (9,136 bytes)
9. RE: Blue smoke and good compression (score: 1): Author: Unknown; Date: Mon, 18 Nov 2002 20:01:17 -0500; Message text written by "R. Ashford Little II" another question so I can get's me a little "edumaction." Basically, I have a question as to whether the blue smoke is being caused by a worn/bad oil ri; /html/triumphs/2002-11/msg00614.html (9,252 bytes)
10. RE: Blue smoke and good compression (score: 1): Author: Unknown; Date: Tue, 19 Nov 2002 12:59:37 +1100; It sounds to me like a valve problem if it smokes at higher revs. Wouldn't it be possible for a valve to bind up at high RPM ? - i.e. dodgy valve spring and maybe oil from the rocker / valve area is; /html/triumphs/2002-11/msg00617.html (9,472 bytes)
11. RE: Blue smoke and good compression (score: 1): Author: Unknown; Date: Mon, 18 Nov 2002 17:53:53 -0800; My car seems to burn more oil than I would expect for a fresh rebuild (5K miles) - or about a quart every 500 miles. Going along with this thread it sounds like my car is similar, in that my #1 cylin; /html/triumphs/2002-11/msg00620.html (10,413 bytes)
12. Re: Blue smoke and good compression (score: 1): Author: Unknown; Date: Mon, 18 Nov 2002 20:15:50 -0600; The exhaust side is a low pressure side. If it were not the exhaust would not go out the tail pipe. Jeff Howard Rayne LA USA '69 GT6+ '80 Spit -- Original Message -- From "R. Ashford Little II" <rali; /html/triumphs/2002-11/msg00621.html (12,415 bytes)
13. RE: Blue smoke and good compression (score: 1): Author: Unknown; Date: Mon, 18 Nov 2002 22:42:21 -0500; Thanks to all who took the time to respond to my questions. I've heard from a great many people on this list and most all of them have leaned towards valve guides. I'm also having to educate myself o; /html/triumphs/2002-11/msg00624.html (11,830 bytes)
14. Re: Blue smoke and good compression (score: 1): Author: Unknown; Date: Mon, 18 Nov 2002 22:52:03 -0600; I agree. If you consider the fact that the air pressure at the intake of the carb drops in pressure until it reaches the cylinder then it is compressed by the piston, the highest pressure in the eng; /html/triumphs/2002-11/msg00628.html (12,017 bytes)
15. RE: Blue smoke and good compression (score: 1): Author: Unknown; Date: Tue, 19 Nov 2002 10:22:00 -0500; Not that you guys needed confirmation of your advice, but the overwhelming consensus of the list is that my valve guides are the culprit. I also spoke with JK and the first thing out of his mouth was; /html/triumphs/2002-11/msg00634.html (8,569 bytes)
16. RE: Blue smoke and good compression (score: 1): Author: Unknown; Date: Tue, 19 Nov 2002 11:09:41 -0500; Message text written by john & patricia donnelly (at I did this years ago - rebuilt an engine at have it burn a quart of oil in 200 -300 miles. The car ran great and had lots of power and created ver; /html/triumphs/2002-11/msg00635.html (10,550 bytes)
17. RE: Blue smoke and good compression (score: 1): Author: Unknown; Date: Tue, 19 Nov 2002 13:28:52 -0500; Well, I thought I would ask a follow up question to you all, or y'all as we say down south. I got a piece of tubing and disconnected my crank vent which was routed to both carbs, and then stuck the n; /html/triumphs/2002-11/msg00638.html (10,301 bytes)
18. RE: Blue smoke and good compression (score: 1): Author: Unknown; Date: Tue, 19 Nov 2002 21:02:44 -0500; I hate to backtrack on something I posted earlier, but there is a new piece of info in your note. (I wonder how many other folks here have considered it?) I may be wrong (as is often the case), but b; /html/triumphs/2002-11/msg00647.html (8,992 bytes)
19. RE: Blue smoke and good compression (score: 1): Author: Unknown; Date: Wed, 20 Nov 2002 09:22:22 -0500; Message text written by "Jim Muller" Interesting. I always thought that bad rings resulted in smoke under load (heavy throttle) where blowby was the worst. perhaps it would be better to say: "...it i; /html/triumphs/2002-11/msg00664.html (8,930 bytes)
20. RE: Blue smoke and good compression (score: 1): Author: Unknown; Date: Wed, 20 Nov 2002 21:12:03 -0500; Thanks for the reply, Dave. Umm, I did say that I might be wrong. I always thought that oil smoke wasn't so much the product of blowby as lack of oil scavenging off the cylinder walls by the rings. T; /html/triumphs/2002-11/msg00687.html (8,286 bytes)

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