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Triumph TR6 - Vacuum Tune?

Would this be a waste of time with our beloved straight sixes?

http://www.centuryperformance.com/vacuum.asp

Rick O.
Rick Orthen

Oh Rick,

I LOVE vacuum gauges. They DO tell you a lot.

I've heard of those who TIME their engines with a vacuum guage. I prefer my Sun light.

I've always subscribed to the theory that there are several tools to do a given job. Some just work better than others.

There IS some good information on that page that you showed us. Valve timing issues are certainly one that comes to mind.

Thanks,

Jim
Jim Deatsch

Hi
I have a vacuum gauge that I use as a first test when working on my 6, If the needle is steady at 17psi then I know I have no leaks etc...I'm not sure I'd try and adjust the timing with it I prefer the timing light.
Cheers
Charlie
Charlie Ballard

Hey, Charlie. I'm guessing that you meant 17" Hg.

Brent
Brent B

Yes your right Brent...sorry typo
Charlie Ballard

and of course, we all know the best way to FIND a vacuum leak (non ported of course) is to fog some WD-40 on a COLD engine while it's idling (at tickover).

Any vacuum leak will cause the engine to increase revs a touch since the WD-40 is flammable.

And it smells nice too. <G>

Jim
Jim Deatsch

Oh no Spit parts and shares in WD-40 what next :)

My own opinion is I don't like WD-40 for anything. Mediocre catch all at best well advertized. Rots rubber actually helps for a bit as it softens then rubber drys and cracks. Leak time in the hose end where it sits. For rusty bolt release use Gunk liquid wrench for spray and Diesel fuel for soaking in a tank. Do not oil anything with WD40 sort of like 3in one oil. Pour a little in a dish and set it out in the sun? Glue and Garbage in a week?

For leak testing. Depending on were your doing it and going safest to knowing absolutely what your doing.

Use carb cleaner safe but still a fluid and can be used by anyone. Short bursts at suspect area. Flashes off fast. Residue does not damage rubber lines/diaphrams etc.. More volatile than WD-40 but still not enough to catch small leaks.

Propane heavy and high pressure works not bad used outside/ hard to control even with a plumbers nozzle.

Acetylene my choice with a #1 weld tip and around 2psi. Nice and controlable will even track throttle shaft bushing leaks.

My apologies to WD-40 and Jim but thats from long experience.


Bill Brayford

OH Bill, we all have our favorites and that's why there are different brands. Maybe the WD-40 above the border is really Wd-39.5? <G>

I've found a good product for loosening recalcitrant fasterns. "Thrust" penetrating oil. It's aerosol and works dandy.

If you use propane remember that it IS heavier (as Bill mentioned) than air and will settle into 'valleys'. It's explosive like acetylene too. Bill is dead on with the acetylene deal. LOW pressure is the key.

Now, as to the Spit parts, ahem, a guy's gotta make a living after all. And I DO sell TR6 pieces too. laughing on the way to the bank...

Jim
Jim Deatsch

This thread was discussed between 09/10/2003 and 11/10/2003

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