90 degree adaptor for Fuel Pressure Test Hose - ZR-1 Net Registry Forums

KJL · 09-02-2016

Trying to get my hose on the fuel rail schrader valve is a PITA. I was wondering if anyone knows of a 90 degree fitting that will screw into the test hose and over the fuel rail valve? All I can find are 90 degree fittings with a quick disconnect on the test hose side.

RussMcB · 09-02-2016

This is from memory so may not be accurate - I think it is a standard thread (something like 3/8-24 or AN-6. I had a fitting that fit, and I was able to cobble together a pressure tester. I think I temporarily removed the inner Schrader valve during the test.

I'll probably be around on Saturday if you want me to check to see if I have something you can borrow.

KJL · 09-02-2016

I was looking for an adapter to keep on hand. I guess if the valve is removed for testing, that would open up some possibilities. I have of bunch of misc. fittings I will try. Thanks for the idea!

BigJohn · 09-02-2016

Replacement Bicycle Pump Head?

KJL · 09-02-2016

Thread size is not big enough.

LGAFF · 09-02-2016

check nitrous fittings for fuel rails.....or speed shop

WVZR-1 · 09-02-2016

GM & standard Schrader I'm quite sure is .305 - 32 TPI (sometimes .302 is mentioned also and that I believe comes from a Metric conversion).

BUT this ain't correct for FI Schrader external. I believe the terminology for the FI Schrader is just "large Schrader".

A26B · 09-02-2016

Quote:

Originally Posted by WVZR-1

GM & standard Schrader I'm quite sure is .305 - 32 TPI (sometimes .302 is mentioned also and that I believe comes from a Metric conversion).

Never thought of trying but a TSV-01 might work:

https://www.topeak.com/global/en/pro...-valve-adapter

You never cease to amaze me with your infinite wealth of knowledge.

-=Jeff=- · 09-02-2016

Quote:

Originally Posted by WVZR-1

GM & standard Schrader I'm quite sure is .305 - 32 TPI (sometimes .302 is mentioned also and that I believe comes from a Metric conversion).

Never thought of trying but a TSV-01 might work:

https://www.topeak.com/global/en/pro...-valve-adapter

Quote:

Originally Posted by A26B

You never cease to amaze me with your infinite wealth of knowledge.

That makes 2 of us

Dynomite · 09-02-2016

Quote:

Originally Posted by WVZR-1

GM & standard Schrader I'm quite sure is .305 - 32 TPI (sometimes .302 is mentioned also and that I believe comes from a Metric conversion).

Never thought of trying but a TSV-01 might work:

https://www.topeak.com/global/en/pro...-valve-adapter

Quote:

Originally Posted by A26B

You never cease to amaze me with your infinite wealth of knowledge.

3 of us

I was going to try the AC connectors

09-02-2016	#1
KJL Join Date: Mar 2013 Location: Roswell, GA Posts: 234	90 degree adaptor for Fuel Pressure Test Hose Trying to get my hose on the fuel rail schrader valve is a PITA. I was wondering if anyone knows of a 90 degree fitting that will screw into the test hose and over the fuel rail valve? All I can find are 90 degree fittings with a quick disconnect on the test hose side. __________________ 1995 ZR1 #159 Ported,Corsa,4.10 Rear, Dual Disc RAM Clutch, Alum Flywheel, Haibeck Chip, ZFDoc Plates, Relocated Battery 400 rwhp 1992 ZR1 #280 Ported, Locked Secondary's, Flowmaster Exhaust, Haibeck Chip, 375rwhp 1996 Collectors LT4 (Stock) 1972 Convertible 434 Small Block 572 rwhp

09-02-2016	#2
RussMcB Join Date: Jan 2015 Location: Marietta, GA USA Posts: 1,160	Re: 90 degree adaptor for Fuel Pressure Test Hose This is from memory so may not be accurate - I think it is a standard thread (something like 3/8-24 or AN-6. I had a fitting that fit, and I was able to cobble together a pressure tester. I think I temporarily removed the inner Schrader valve during the test. I'll probably be around on Saturday if you want me to check to see if I have something you can borrow.

09-02-2016	#3
KJL Join Date: Mar 2013 Location: Roswell, GA Posts: 234	Re: 90 degree adaptor for Fuel Pressure Test Hose I was looking for an adapter to keep on hand. I guess if the valve is removed for testing, that would open up some possibilities. I have of bunch of misc. fittings I will try. Thanks for the idea! __________________ 1995 ZR1 #159 Ported,Corsa,4.10 Rear, Dual Disc RAM Clutch, Alum Flywheel, Haibeck Chip, ZFDoc Plates, Relocated Battery 400 rwhp 1992 ZR1 #280 Ported, Locked Secondary's, Flowmaster Exhaust, Haibeck Chip, 375rwhp 1996 Collectors LT4 (Stock) 1972 Convertible 434 Small Block 572 rwhp

09-02-2016	#5
KJL Join Date: Mar 2013 Location: Roswell, GA Posts: 234	Re: 90 degree adaptor for Fuel Pressure Test Hose Thread size is not big enough. __________________ 1995 ZR1 #159 Ported,Corsa,4.10 Rear, Dual Disc RAM Clutch, Alum Flywheel, Haibeck Chip, ZFDoc Plates, Relocated Battery 400 rwhp 1992 ZR1 #280 Ported, Locked Secondary's, Flowmaster Exhaust, Haibeck Chip, 375rwhp 1996 Collectors LT4 (Stock) 1972 Convertible 434 Small Block 572 rwhp

09-02-2016	#6
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,194	Re: 90 degree adaptor for Fuel Pressure Test Hose check nitrous fittings for fuel rails.....or speed shop __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

09-02-2016	#7
WVZR-1 Join Date: Oct 2004 Posts: 1,890	Re: 90 degree adaptor for Fuel Pressure Test Hose GM & standard Schrader I'm quite sure is .305 - 32 TPI (sometimes .302 is mentioned also and that I believe comes from a Metric conversion). BUT this ain't correct for FI Schrader external. I believe the terminology for the FI Schrader is just "large Schrader". Last edited by WVZR-1; 09-03-2016 at 03:16 AM.