250 r air leak test

[bebogis]

I need help, I am trying to find out what is the pressure (PSI) required to test a 250r engine for air leaks, and also how many minutes are needed to hold that pressure for the engine to be ok.
Thanks

[TLR-Online]

6 PSI for 6 Minutes. Make sure your tester does not leak...

[norcalduner]

Here is some info ....

http://www.duncanracing.com/TechCenter/2strk_presstest.pdf