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Posted by: mhenderson57 Jul 8 2015, 08:06 AM

I'm looking for a braided stainless steel hose extension to install a oil pressure sending unit on my 2.0 liter engine. I would appreciate any advice on this purchase.
Thanks,
Matt

Posted by: Racer Chris Jul 8 2015, 08:11 AM

I have several on the shelf.

Posted by: stugray Jul 8 2015, 11:06 AM

I used a 10mmX1.0 to npt adapter and a grease gun hose extension from FLAPS but many just thread it right in to the case without the adapter.

Posted by: DavidSweden Jul 8 2015, 11:14 AM

+1, although the grease gun hose is a little stiffer than I would have liked

Posted by: stugray Jul 8 2015, 11:26 AM

mine:

Posted by: Mark Henry Jul 8 2015, 12:30 PM

BTW if you use the grease gun hose you have to ground the sender unit.

Posted by: Racer Chris Jul 8 2015, 01:12 PM

IMO grease gun hoses don't last long in service.

Posted by: pete000 Jul 8 2015, 02:14 PM

The trick is how to install it with the engine in the car. I am still trying to figure out how to get a wrench down in there.

Anyone have any pictures of tools they have made or modified to tighten the hose fitting?

Posted by: Harpo Jul 8 2015, 04:13 PM

I purchased everything from JEgs this is an Earls pre assembled AN-4 line. The first time I installed the grease gun line I used a 7/16 crows foot tool. When I install this new line I will only need a socket to install the 1/8 to AN-4 adapter

Posted by: pete000 Jul 8 2015, 04:23 PM

Ah, I will give this a try !

Posted by: BeatNavy Jul 8 2015, 04:23 PM

Yeah, I did mine with the engine out of the car. Doing it with the engine in the car would seem to be a bit of a challenge. But I don't think you want to torque it too much. As Harpo suggested, I think a crows feet socket would be the best bet.

I got mine at AA (I know, I know ). It wasn't a great value and I wish I had known Racer Chris had them. I would have gladly bought it from him instead.

Posted by: dangerranger01 Jul 8 2015, 05:02 PM

What is that aluminum colored block in the center for? And is the stock thread 1/8npt?

Do you all run the gauge full time?

Posted by: stugray Jul 8 2015, 05:02 PM

If you use the adapter like in my pic above (brass piece), you can thread that in with a socket.
Then you can reach the hose fitting with an open end.

Posted by: mr914 Jul 8 2015, 05:17 PM

If you have a Parker store nearby

It's Parker 919 hose. -4AN one side 1/4"FPT the other and a 1/4MPT to -4 male adaptor. 8"hose, or how long you like and they crimp it right there.

Had on made at Christmas time in Rochester and the whole thing ran less than $20

Hose is tough stuff, rated for like 475F

Posted by: stugray Jul 8 2015, 06:04 PM

The thread in the case is very close to 1/8" NPT and a 1/8" NPT WILL thread in.
However there is a huge debate about what the thread actually is.

I am of the belief that it is 10mm x 1.0.
The 10mm x 1.0 to 1/8" NPT fit perfectly and then the 1/8 Grease hose threaded into that more than 3 threads.

Posted by: Mike Bellis Jul 8 2015, 06:57 PM

The thread pitch (thread spacing really) is the same but the 1/8"NPT is a tapered thread, the 10mm is not tapered.

The 1/8" NPT will thread in and work but is not correct for the metric thread. I do not know of anyone that had a leak or thread failure using the NPT thread.

Posted by: Jake Raby Jul 8 2015, 08:48 PM

All you need is the hose from a paintball gun. Its rated to 3,000 PSI and is a braided hose. They ground the sensor, too.

I have had one in service for a decade on my own car. I think it cost 6 bucks last time I bought one.

Posted by: stugray Jul 8 2015, 08:57 PM

From the other thread:

Posted by: Dtjaden Jul 8 2015, 10:14 PM

This is also what I am using.

Posted by: Valy Jul 8 2015, 11:49 PM

This will set you up with the adapter from 10mm to NPT, hose and gauge. $25
http://www.harborfreight.com/engine-oil-pressure-test-kit-98949.html

Posted by: Harpo Jul 9 2015, 03:54 AM

The aluminum block is actually "C" channel that will hold the "T" fitting down to the engine. My intent is to copy Stugrey's design. Yes I intend to run with the gauge full time.