letitsnow Posted August 30, 2008 Share Posted August 30, 2008 All Mcmaster-carr part numbers. I used the BSPT to NPT and BSPT coupler because mcmaster-carr didn't have a brass npt male to bspt female fitting, only a stainless one that was 2x as much as both of these. Anybody got a simpler/cheaper way to do it? Quote Link to comment Share on other sites More sharing options...
Six_Shooter Posted August 30, 2008 Share Posted August 30, 2008 I re-tapped the block to 1/8" NPT. I just loaded up the flutes of the tap with grease to hold the shavings. I could have gone just to a 1/8 to -4 T, but decided that I wanted an oil pressure switch in there for my fuel injection, so I have a couple bushings and a T fitting between. Quote Link to comment Share on other sites More sharing options...
CarJway Posted August 30, 2008 Share Posted August 30, 2008 You can convert the BSPT thread on the block to NPT, than just use any standard NPT style block. I have in the picture below, BSPT to NPT. Then a block that has a male NPT into the adapter. From there I use another adapter for the -4AN line to the turbo. If this looks like something useful, let me know, and I will dig up where I bought everything from. Quote Link to comment Share on other sites More sharing options...
TrumpetRhapsody Posted August 30, 2008 Share Posted August 30, 2008 Yeah prices and places would be great for that. Additionally the fittings for the -4 into the turbo would be nice (pic of that too would be cool). Quote Link to comment Share on other sites More sharing options...
letitsnow Posted August 31, 2008 Author Share Posted August 31, 2008 Any part numbers would be great, right now if I did it like my drawing it would cost $50. My oil pressure sender also has 1/8" BSPT. Yeah prices and places would be great for that. Additionally the fittings for the -4 into the turbo would be nice (pic of that too would be cool). My turbo has an 1/8" BSPT thread, that's what the separate adapter in my drawing is. Quote Link to comment Share on other sites More sharing options...
Clifton Posted August 31, 2008 Share Posted August 31, 2008 My oil pressure sender also has 1/8" BSPT. My turbo has an 1/8" BSPT thread, that's what the separate adapter in my drawing is. You can screw a BSP male thread into a female NPT, just not the other way around. So you could tap your block NPT and use a NPT tee and the bsp gauge and oil feed would still screw in. If you tap the block I would start the engine for a second to get the chips out. Quote Link to comment Share on other sites More sharing options...
ktm Posted August 31, 2008 Share Posted August 31, 2008 www.stealthmodeperformance.com already has a BSPT-NPT-NPT-BSPT adpater. It has one BSPT male end that threads into the block, one BSPT female for the oil pressure sender, and two female NPTs for AN fittings and the like. You can also pick up a -3 SS braided line for the oil feed as well as the AN fittings too. Quote Link to comment Share on other sites More sharing options...
letitsnow Posted August 31, 2008 Author Share Posted August 31, 2008 Roughly how long does the line have to be? You can screw a BSP male thread into a female NPT, just not the other way around. So you could tap your block NPT and use a NPT tee and the bsp gauge and oil feed would still screw in. If you tap the block I would start the engine for a second to get the chips out. Didn't know that. Thanks. Quote Link to comment Share on other sites More sharing options...
CarJway Posted September 2, 2008 Share Posted September 2, 2008 Hmmm... This probably won't help, since you need BSPT for your oil sending unit. Also try out ATPTurbo.com, they have some unique items that help for some odd situtations. Part numbers from summit: Distro block - 15.39 - Nitrous Oxide Systems (NOS) 16775NOS 1/8 npt -4AN - 4.95 - Nitrous Express (NX) 16109 1/8 BSPT 1/8 NPT - 15.39 - Auto Meter 2269 Quote Link to comment Share on other sites More sharing options...
TrumpetRhapsody Posted September 2, 2008 Share Posted September 2, 2008 Thanks for the link to that ATPturbo.com site, they do custom -4 stainless lines for CHEAP! Quote Link to comment Share on other sites More sharing options...
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