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Triumph TR6 - Anyone in SW, Central Ontario have leakdown tester

I was wondering if anyone in the GTA area has a leak down tester I might borrow? Need to trouble shoot the high crankcase pressure mentioned in recent Post.

Princess Auto says they don't have one. A local supplier quoted me $172- a little too rich for me for the amount I plan on using it.
Michael Petryschuk

Mike
If you google "leak down tester" you will see there are ones you can make yourself. No, do not have one.
Good luck
Rick
Rick Crawford

Thanks Rick
Michael Petryschuk

I have borrowed one. Thanks for your help.
Michael Petryschuk

It will be intersting to hear what you find out.

What should the pressure be if it is OK??
Where do you get that data?

Rick
Rick Crawford

Rick, I originally saw the information on leakdown testers either here or on the 6-pack site, I can't remember which. The way it works is, compressor air goes into the prv then through a resticter (in the case of the home made one, about 040") then into the combustion chamber. If it is 100%, the guage after the restricter will show the same pressure as incoming air. Any leakage will show up as reduced pressure because the air will leak out faster than it can be replaced with a hole that small. You could probably do this without the prv as long as your compressor dosn't run too high. What I have read is don't go over 100 psi, don't know why, maybe it is cheaper to make them at that pressure limit because maybe there is no advantage to going higher so they aren't made to. Don't know

Mike, my local Princess Auto still has them on the shelf for about $80. They could probably have ordered one in for you, but hey, borrowing is cheaper.

Rob
rw loftus

Thanks Rob
Makes sense.
Rick Crawford

Rob

When I called PA they said they didn't have one listed. So much for phone help. Through some help from people, I located a used one on Kijiji and am arranging to buy it but won't have it until next week.

To add to Rob's comments

Most air pressure equipment is designed for 150 psi max and to be operated at 100 psi. (50% safety factor) That is probably why they say don't go over 100. Getting above 100 might also start to cause problems in the combustion chamber or depending upon where the air is leaking into- damage there (damage to head gasket, carbs, oil seals etc). And in closing, more pressure will not provide anymore insight into leaks than 100 psi so why go there. The higher the pressure- the more risk of failure and injury.

Thanks for everyone's help. I will advise my findings. I have researched and heard that a 10 % loss or less is good. Meaning 100 psi on the supply regulator- 90 psi or more on the combustion camber gauge Any more may be a problem.
Michael Petryschuk

This thread was discussed between 29/04/2009 and 01/05/2009

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