HF compression tester fail, some pretty awesome numbers, and a ghostly hiss...

[Wvdirtroad]

My experience is brass seals against casts/ metal etc very well. Much like brass fittings in the side of oil coolers/ injection pump housing etc. I wouldn't imagine if a brass fitting tightened down, will allow enough air to escape to mess with the test results dramatically, unless maybe you're doing a leak down at some point. Just my thought, though.

 

[LCAM-01XA]

That's the point tho, we already have an adapter that will work with the comp tester (after said tester gets the new 1-way valve and the adapter gets its valve core gutted), the problem would appear if we try to fashion some sort of straight-thread fitting for the low-pressure leakdown test. Hence the attempt to make the comp test adapter work with the leakdown tester as well.