Fueling & Injection Fuel Pumps | Injectors | Rails | Regulators | Tanks

Custom cut fittings?

Thread Tools
 
Search this Thread
 
Old Jan 11, 2009 | 01:01 AM
  #1  
Somebody09's Avatar
Thread Starter
TECH Resident
 
Joined: Dec 2004
Posts: 905
Likes: 0
Default Custom cut fittings?

I need a 3/8" NPT to -8AN ORB male/male fitting, but I can only find 3/8" NPT to -8AN 37° flare male/male fittings. Would it be all right to just buy what's available and cut the flare off? Of course, I'd throw an o-ring on there too. What I don't want is to use three fittings (-8AN ORB, a coupler, and an AN to NPT fitting). Thanks.

Here's a picture:

Last edited by Somebody09; Jan 11, 2009 at 11:47 AM.
Reply
Old Jan 11, 2009 | 01:29 AM
  #2  
405HP_Z06's Avatar
TECH Addict
iTrader: (11)
 
Joined: Jun 2003
Posts: 2,215
Likes: 19
From: Arlington, Tx
Default

Part number 981608

http://www.anplumbing.com/shop/index...&dept=Aluminum
Reply
Old Jan 11, 2009 | 02:11 AM
  #3  
Somebody09's Avatar
Thread Starter
TECH Resident
 
Joined: Dec 2004
Posts: 905
Likes: 0
Default

Thanks, but that's what I'm already finding.

I'm sure it'll seal just fine with the o-ring, but my concern is flow. If I leave the flare part in tact, will I lose flow?
Reply
Old Jan 11, 2009 | 11:58 AM
  #4  
Somebody09's Avatar
Thread Starter
TECH Resident
 
Joined: Dec 2004
Posts: 905
Likes: 0
Default

Hmmm.... I think have my answer - "yes"!

http://en.wikipedia.org/wiki/O-ring_boss_seal

Because ORB adapters are relatively rare, one can be fashioned using a 37 degree AN (Army/Navy) flare fitting because the threads are compatible in diameter, pitch and spacing. To do this, a suitable o-ring, washer and nut are obtained separately. The flared end of the male AN flare is machined off. Optionally, a chamfer tool (or, if one cannot be obtained, a drill bit) can then be used to knock the inside shoulder off and make a reverse or inward angle that will smooth the flow of the fluid into the fitting bore. The last step is often unnecessary because most applications don't require a smooth flow of fluid unless operating at an extremely high flow rate.
So do our LSx cars operate "at an extremely high flow rate"? If so, that answers my other question about flow, and what tells me what I need to do about it.

Of course, this information is only as good as its source. I'll let you know if my car goes up in flames! ...if I survive, that is.
Reply
Old Jan 11, 2009 | 12:01 PM
  #5  
405HP_Z06's Avatar
TECH Addict
iTrader: (11)
 
Joined: Jun 2003
Posts: 2,215
Likes: 19
From: Arlington, Tx
Default

Originally Posted by Somebody09
Thanks, but that's what I'm already finding.

I'm sure it'll seal just fine with the o-ring, but my concern is flow. If I leave the flare part in tact, will I lose flow?
Are you installing the regulator before or after the rails? How are the inside of the regulator ports designed? i.e. straight through, tapered

That's the only fitting I can find in those specs. No radius fittings.
Reply
Old Jan 11, 2009 | 12:12 PM
  #6  
Somebody09's Avatar
Thread Starter
TECH Resident
 
Joined: Dec 2004
Posts: 905
Likes: 0
Default

...and another source: http://www.pressureconnections.com/i...eneral_orb.pdf

The O-Ring Boss & the 37 JIC Flare use the same threads. The difference is the way each thread seals. While the JIC seals on the metal-to-metal flare, the ORB seals on an O-ring ... An O-ring seal offers the best leak free connection.
I'm finding this source excellent because it even lists torque specs at the bottom! However, looking at the directory in which the PDF resides, I'm pretty sure the specs are for steel fittings.
Reply
Old Jan 11, 2009 | 12:15 PM
  #7  
Somebody09's Avatar
Thread Starter
TECH Resident
 
Joined: Dec 2004
Posts: 905
Likes: 0
Default

Originally Posted by 405HP_Z06
Are you installing the regulator before or after the rails? How are the inside of the regulator ports designed? i.e. straight through, tapered

That's the only fitting I can find in those specs. No radius fittings.
It'll be installed after the rails, and the regulator (Aeromotive 13301) has 3/8" NPT threads on all five holes (four inlet, one outlet).
Reply
Old Jan 11, 2009 | 12:30 PM
  #8  
cooljoe57's Avatar
Teching In
 
Joined: Oct 2008
Posts: 9
Likes: 0
Default

Try your local hydraulic shop, they should have exactly what your looking for.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-4

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-5

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
Old Jan 11, 2009 | 10:27 PM
  #9  
Somebody09's Avatar
Thread Starter
TECH Resident
 
Joined: Dec 2004
Posts: 905
Likes: 0
Default

Good idea!
Reply




All times are GMT -5. The time now is 10:37 PM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-4
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-5
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-6
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-7
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-8
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-9
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE