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Where to get 3/8BSPT to 1/8 NPT adapter

 
Old Apr 19, 2019, 03:34 PM
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Where to get 3/8BSPT to 1/8 NPT adapter

I'm trying to find a 3/8 BSPT to 1/8 NPT adapter for the oil pressure sensor. But since 42 draft design doesn't make it any more. I can't find any of them in google.
Also from what I have searched, the AMS remote oil pressure line has one 1/8 NPT end and one 3/8 NPT end not 3/8 BSPT, so i think it won't fit the car.
It would be very nice if you guys can share me some info.
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Old Apr 19, 2019, 04:07 PM
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I just went through this mess. They make this adapter for hydraulic fittings, but if you can't find it, you might have to use an intermediate adapter. It also sucks that NPT and BSPT are not interchangeable.

Here is a brass one that is available through a US seller.

https://www.ebay.com/itm/3-8-BSPT-Ma...IAAOSw5KFbSDS5

Make sure you use high temp thread sealant. What I hate about NPT/BSPT fittings is that they sometimes decide to leak by themselves, but the evo block has a few of them. It's borderline dark magic.
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Old Apr 19, 2019, 04:26 PM
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Originally Posted by Pal215 View Post
I just went through this mess. They make this adapter for hydraulic fittings, but if you can't find it, you might have to use an intermediate adapter. It also sucks that NPT and BSPT are not interchangeable.

Here is a brass one that is available through a US seller.

https://www.ebay.com/itm/3-8-BSPT-Ma...IAAOSw5KFbSDS5

Make sure you use high temp thread sealant. What I hate about NPT/BSPT fittings is that they sometimes decide to leak by themselves, but the evo block has a few of them. It's borderline dark magic.
Book marked! Nice find. I hate searching for these things.
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Old Apr 19, 2019, 04:42 PM
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Originally Posted by kaj View Post
Book marked! Nice find. I hate searching for these things.
you got it man.

For automotive applications, having O-Ring Boss, -AN, quick disconnect, crush washer, and socketless fittings is more than good enough for me. I can't think of a single use case for cars where a pipe thread fitting couldn't be replaced by something less dangerous by the manufacturer. If done right, NPT and BSPT shoudn't leak, but they are often done wrong and eventually DO leak lol. Here we are stuck with them unless we weld. I have broken a few of these fittings and royally screwed myself from over-tightening
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Old Apr 19, 2019, 05:42 PM
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Same here: "I think I can go a LITTLE tighter...." then I stop out of pure fear. I don't like any fitting that ever gives you a clear sign of being tight LOL.

Next time I have my car down, I'm gonna pull the OFH and weld an -an fitting. This brass stuff is just crap LOL
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Old Apr 19, 2019, 08:06 PM
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Thank you, that's the adapter. So you mean I still need to use some sealant even though i use adapters?
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Old Apr 19, 2019, 08:08 PM
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Absolutely. All npt, bspt, etc fitting should have sealant.
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Old Apr 19, 2019, 08:25 PM
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Originally Posted by kaj View Post
Absolutely. All npt, bspt, etc fitting should have sealant.
Do you have any recommendations? I want to use something good quality.
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Old Apr 19, 2019, 08:27 PM
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This part from AMS works as well. Remember to use a blow torch to heat up the plug before you try to take it out of the oil filter housing. Otherwise you might round out the hex.

https://www.amsperformance.com/cart/...nit-line.html/

Also I have used the gasoline safe PTFE tape from Home Depot and that works well too. Its the tape that comes in a yellow case.
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Old Apr 19, 2019, 08:53 PM
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Originally Posted by EVOLUTION GRAND View Post
Do you have any recommendations? I want to use something good quality.
This is my favorite:

https://www.grainger.com/product/4YR...180706233812:s

As for removing the plugs from the OFH, another method to try: I used my air gun and a hex bit. Zipped them right out. Mine liked to be "hammered" out, as opposed to constant, increasing pressure.
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Old Apr 19, 2019, 09:25 PM
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Originally Posted by deylag View Post
This part from AMS works as well. Remember to use a blow torch to heat up the plug before you try to take it out of the oil filter housing. Otherwise you might round out the hex.

https://www.amsperformance.com/cart/...nit-line.html/

Also I have used the gasoline safe PTFE tape from Home Depot and that works well too. Its the tape that comes in a yellow case.
I will be using AMS remote line after the adapter.
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Old Apr 19, 2019, 09:29 PM
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Originally Posted by kaj View Post
This is my favorite:

https://www.grainger.com/product/4YR...180706233812:s

As for removing the plugs from the OFH, another method to try: I used my air gun and a hex bit. Zipped them right out. Mine liked to be "hammered" out, as opposed to constant, increasing pressure.
Ok. thanks. I got one last question i know it's kinda noob question. After i remove the plugs from oil filter housing, what's inside there? Will there be oil draining out from the hole? I just want to be prepared for the situations since it's my first time doing this.
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Old Apr 19, 2019, 10:36 PM
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There may be some residual, yah. I drained my pan and hadn't run the car for a while, so it was minimal for me.
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Old Apr 20, 2019, 12:54 AM
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Originally Posted by EVOLUTION GRAND View Post
I will be using AMS remote line after the adapter.
You don't need the adapter if you use the remote line. The remote line goes directly into the oil filter housing.
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Old Apr 20, 2019, 08:23 AM
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Originally Posted by deylag View Post
You don't need the adapter if you use the remote line. The remote line goes directly into the oil filter housing.
The fitting is bspt thread? We need to find where to get those.

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