Alpha One pressure/vacuum tester thread pitch

[NHGuy]

I'm getting ready to make up a leak tester for my drive and I don't know the thread pitch for the holes. Any one know the #s?

 

[Bondo]

Re: Alpha One pressure/vacuum tester thread pitch

Ayuh,... 3/8ths"- 16...

I used an old fitting off a pumpbottle pump, nice Metal 1....

 

[ziggy]

Re: Alpha One pressure/vacuum tester thread pitch

I used an old fitting off a pumpbottle pump, nice Metal 1....

yep, me too. i also got the new plastic version. not as hip but still works for the deed at hand (pressure testing). i just tried it. still like the metal one better... kinda hard to find them it seems. which is why i ended up with a plastic one too. i used the metal one to make up my pressure tester.....

 

[PiratePast40]

Re: Alpha One pressure/vacuum tester thread pitch

If you want to go with one thats allready made up and ready to go, this guy has them on ebay:http://cgi.ebay.com/ebaymotors/Inboard-Outboard-Lower-Unit-Pressure-Leak-Tester-KIT-/270705810177?pt=Boat_Parts_Accessories_Gear&hash=item3f0752db01
Kinda takes the fun out of building it yourself but I bought one - works fine for both pressure and vacuum tests.