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Turbo oil supply thread?

Posted: Wed Nov 14, 2012 7:07 pm
by ProZac
I'm putting together the order for the bits to fit the td05h to my Starion. The oil supply is baffling me a little...

The turbo has an M12x1.25 thread, which seems fairly generic, and is nice and easy to get AN adaptors for.

The supply from the oil filter housing has me a little stumped however. Ive circled the stock supply line in red in the picture below. Ideally I'd like to do away with the adaptor that's in place, and replace it with a -4AN adaptor, to match the turbo side. Can anyone tell me what the thread in the oil filter housing is here? (not the flare adaptor screwed in). It's tapered, if that helps.

Image

I really need to study up on threads other than nice simple metric ones!

Posted: Wed Nov 14, 2012 7:53 pm
by 1320ft
Just take the flare adaptor down to Pirtek & they will be able to tell you what thread it is.

"Shameless plug"

They stock our Proflow fittings, so they should have what you need.

Posted: Wed Nov 14, 2012 8:03 pm
by ProZac
Very punny :).

Cheers, they even have a local outlet, will go see them tomorrow.

Posted: Wed Nov 14, 2012 8:49 pm
by fugazi

Posted: Wed Nov 14, 2012 10:17 pm
by ProZac
Yeah, I found that thread, but it doesn't really give any answers.

I took some measurements, and came up with 1/4 NPT, going off this information:

http://www.fairburyfastener.com/xdims_pipe_threads.htm

It all seems to measure out okay, just over 1/2" at the thick end, and 18 TPI.

I've ordered line and the fittings from http://www.nzkw.com/

If it turns out to be something other than 1/4 NPT, I'll only have to get another adaptor to -4AN, but it was only like $4.50 anyway :).

Posted: Thu Nov 15, 2012 3:12 pm
by coop1er
Japanese tapered threads are usually bspt.