From what I have read the oil pressure sender on the block uses a 1/8" BSPT thread. I need this to go to a -4an line, and then the -4an line needs to go to a 1/8" bspt male.

Is there anyother type of thread that will work with the BSPT.

I see things called Pipe Thread to AN adaptors, but I am not sure if this is the same things as what I need...BSPT to AN. Would NPT or something work?

 

The BSPT fitting you can get in a Sunpro brass fitting kit for $4.99 from AutoZone. I forget the exact part number..........

 

Hmmmmm........

 

...or you could just tap the hole for 1/8" NPT. That's what I did.

 

That could be another consideration. Problem is, I have never tapped anything before.

 

Not even a keg?

Hehe, just felt like being stupid.

Tapping isn't an art or anything. Get the tap, put a little grease on it to catch the metal shavings. Run it in, pull it out (hehe)...and you're done

 

LOL. I knew something like that was going to be said! Thats why I left the little face at the end of my post.

I may have to try the tapping route, although that still leaves me with the problem of getting an adaptor to go from the -4an female to the 1/8" bspt male brass fitting.

 

If you mean the oil pressure switch's male threads, they work fine in a female 1/8" NPT fitting The main difference between BSPT and NPT is the amount of taper the BSPT has. That's what the "T" actually stands for, Taper. I always theought it was Thread, like in NPT.


[Modified by DSF, 11:53 AM 4/19/2002]

 

Getting pic to help with this........

 

Here is a link to show you what I need.(I think)



I am assuming the male connector of the T in the pics is 1/8" bspt, because that is what is designed to go into the block.

I am also assuming the adaptor is -4an to 1/8" bspt because it fits fine in both of the holes in the T, and one of the holes has to be the oil pressure sender, which is 1/8" bspt.

 

I checked out the pics. I had a T just like that. It was BSPT male thread, BUT the two females (hehe) were both NPT. I actually haven't seen a complete BSPT T. May I make a suggestion, though. I wouldn't recommend putting a T into the block. I had a friend and know a few people who have cracked the block at that location due to the weight of the whole assembly and vibration. You'd be better off going with a remote T set up similar to this...


(thanks for the pic Gary)

This way you you'd tap the block for 1/8" NPT. It would go 1)1/8"NPT male to -4AN male adapter 2)female -4AN fitting 3)SS line 4)female -4AN fitting 5)1/8"NPT male to -4AN male adapter 6)1/8'NPT all female "T" 7a) oil pressure switch off one part of the T 7b) repeat 1-5 to go to the turbo.

 

My setup goes like this:
from the block --
1/8" BSPT male/male union
since male BSPT threads go into a female NPT opening just fine, i then have a 1/8" NPT female/female union
next i have a 1/8"NPT to -3AN adapter (and you can get a 1/8" NPT to -4AN adapter)
-3 SS line with -3AN ends (bought pre-assembled etc)
-3AN to 1/8" NPT adapter
3x female 1/8" NPT Tee
etc etc..

alternatively you can get the 1/8" NPT female to 1/8" BSPT male adapter, and then stick the NPT/AN adapter into that.

-Xerxes

 

That is an old pic. Here is mine:
http://members.tripod.com/RGAZ/oil_tee_and_vortech.JPG

Might have to cut and paste.

Randy

 

I am not putting the T on the block. I am running off the block with a -4an line. I think if I just get 2 -4an to 1/8bspt I should be fine.

 

I used a 1/8" NPT to -4AN adapter in the block, then ran a -4 line to a tee on the firewall. The tee on the left has 2 male -4AN, which I used to connect to the block and to the turbo oil feed. The 3rd connection was 1/8" NPT which connected to the other tee, which is all NPT. The factory oil sending unit connects there, and I capped off the last one, which I thought I'd use for an oil pressure gauge if the sending unit will fit in there.

 

how did you guys mount the tees to the firewall?

 

im using zip ties.

 

I dunno if this helps at all, but just so you guys know, -AN fittings are completely compatible with brass flare fittings you can get at any home depot. So if you get the sunpro kit which includes a BPST to 1/8" NPT adapter, then all you need is a Home Depot 1/8" NPT to flare adapter that you can screw your AN hose onto. Likewise then you can use home depot 1/8" NPT tees to connect everything together. You can save a LOT of money doing it this way instead of mail ordering all your fittings from race shops.

 

im just going to use the greddy oil filter sandwich adapter, then a z10 bspt to npt adapter, 1/8 npt to 4an adapter and that to my oil feed, easy as 1-2-3.

 

I don't know if you saw this discussion a few months ago, but i was thinking of running my oil feed from the greddy adapter; it turns out that the way it's designed, oil that comes out of the ports comes out BEFORE it goes into the filter, so you could basically be putting "unfiltered" oil into your turbo..

-Xerxes

 

ya i know, i was in that discussion. i have that area covered as well, im going to put a 4an earls mini oil filter just before the turbo. it has 4an inlet/outlets.

 

Hmm, good to know. Just curious though. How does the brass adapter react when used with aluminum or steel fittings? I "heard" it was not wise to mix metals with -AN fittings.

 

I imagine it could theoretically electrolyze but this only happens in contact with moist air or water, so the oil on the contact surfaces is probably enough to protect it; if not then some teflon pipe thread compound would suffice. I had a brass tee threaded into my aluminum block for at least a year and when it came out I saw no evidence of corrosion whatsoever.

 

Good info!!

Do you know where to get the sunpro kit with the bspt to 1/8 npt??


[Modified by HXMan, 3:35 PM 5/29/2002]

 

heres the alternative to the z10 fitting:

http://www.actron.com/cgi-bin/web_st...=4287414_29306

Sunpro Metric Adapter Kit - CP7573
you could order it on there too.

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