Leakdown Test Rotaries
01-03-2005, 01:47 PM
#1
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yes, i use a mazda strip tester and i have a compression gauge which i use with my video camera so as to record every compression stroke...
prior to 83 (when i switched to rotary) i built and raced lots of full tilt piston road racing motors and my leakdown tester was the tool of choice. i am curious if anyone out there has used a leakdown tester on a rotary... and what are the typical % leakage numbers.
howard coleman
prior to 83 (when i switched to rotary) i built and raced lots of full tilt piston road racing motors and my leakdown tester was the tool of choice. i am curious if anyone out there has used a leakdown tester on a rotary... and what are the typical % leakage numbers.
howard coleman
01-03-2005, 03:53 PM
#3
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they have a leakdown style test to check the water seals. you put the engine on tdc, and take off the radiator cap.
not sure it would give you accurate #'s though, or i'm not sure what an accurate number would be for that matter
not sure it would give you accurate #'s though, or i'm not sure what an accurate number would be for that matter
01-03-2005, 04:38 PM
#4
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Originally Posted by j9fd3s' date='Jan 3 2005, 05:52 PM
they have a leakdown style test to check the water seals. you put the engine on tdc, and take off the radiator cap.
not sure it would give you accurate #'s though, or i'm not sure what an accurate number would be for that matter
not sure it would give you accurate #'s though, or i'm not sure what an accurate number would be for that matter
I think he meant a differential pressure tester for the combustion chamber.
01-03-2005, 05:24 PM
#5
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Originally Posted by mazdaspeed7' date='Jan 3 2005, 02:38 PM
i dont see how you would do that?
01-04-2005, 09:14 AM
#7
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Originally Posted by howracer' date='Jan 3 2005, 07:56 PM
more than 50% leakdown? perhaps you were not exactly on tdc? not meant to be critical of you but just wondering...
i am fixturing a degree wheel and plan to give it a try.
howard coleman
i am fixturing a degree wheel and plan to give it a try.
howard coleman
Well, let us know if youre successful.
Just FYI, I do leakdown tests on a regular basis on piston engined aircraft.
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