ZF Fitting

Steve

Member
GT40s Supporter
#1
Does anyone know what type of fitting this is on the top of the ZF transaxle (in flipped position in an SPF)? I want to put an external breather on the transaxle and I can't find what kind of fitting this is. It doesn't seem to be an NPT.
 

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Steve

Member
GT40s Supporter
#3
Yes, I have the breather assembly. It's "OK" but a remote breather would be better. The breather assembly tends to spit out oil too. I can't figure out what type of threads are used so I can get the appropriate 90 degree fitting. Trying to call and talk to someone at RBT is next to impossible. The phone is either busy or no one picks up.
 
#4
Does anyone know what type of fitting this is on the top of the ZF transaxle (in flipped position in an SPF)? I want to put an external breather on the transaxle and I can't find what kind of fitting this is. It doesn't seem to be an NPT.
That’s just a plastic plug to fill the hole, I think. I suspect (but don’t know for a fact) that the hole is a pipe thread, same as the one used for the side filler, and the drain plug? The original GT 40/Mangusta vent fitting thing is a rather tall,elaborate-looking affair. I don’t know if RBT is making them?

Keep trying Lloyd. He is a one+man operation. He usually comes to work very early in the morning and departs by mid-afternoon, to beat traffic. He basically operates on east coast business hours.
 

Steve

Member
GT40s Supporter
#10
So, apparently I'm a nitwit. The breather is an M26. There's a portion that screws into it that is 3/8" (removed in second photo). I took it to ACE hardware and it screws nicely into 3/8" FPT. Talked with Dennis and, sure enough, he said it's 3/8" NPT. I order a 90 degree 3/8" NPT to -AN fitting and it only screws into the breather a half turn or so and comes to a stop. It's definitely 3/8" but the thread pitch or count must be slightly different. What gives? I thought 3/8" NPT was standard. Not sure why the male fitting I removed screws into a pipe fitting at ACE no problem but the fitting I order won't screw in (other than I'm destined to drag this build into 2020).
 

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Steve

Member
GT40s Supporter
#12
Son of a [email protected]&*. I can't believe the time I've spent on this trivial item. Having said that, I've figured it out. The Breather is a 26M thread and the insert (removed in the 2nd figure above) is a 16M thread. Dennis told me it was a 3/8" thread. Might be the only thing he's ever steered me wrong on and his help is always invaluable. So, I put a 16M to -6AN converter on the breather followed by a -6AN 90 degree and a -6AN to hose fitting and I'm good to go as far as setting up a remote breather.
 

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