New injection fuel rails
- Devastator
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Re: New injection fuel rails
Those look cool! I don't have an injector retaining clip integrated into my design. I like it!
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Sandrail
2.4 liter, supercharged Chevy Ecotec
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Sandrail
2.4 liter, supercharged Chevy Ecotec
"If everything seems under control, you're just not
going fast enough."
Mario Andretti
- panel
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Re: New injection fuel rails
Those are sweet!
'65 Bus with a JDM Subaru EJ20 Turbo
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Built by Germans powered by Japanese and brought together by Canadians
- MarioVelotta
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Re: New injection fuel rails

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- MarioVelotta
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Re: New injection fuel rails
I'm torn. Should I stick with my initial plan of using O-ring sealed fittings or stick to 1/4" NPT. The NPT fittings are about $3 each. The o-ring fittings are about $10 each. I'm leaning toward the NPT to keep conversion cost down.
How would you do it?
How would you do it?
The Dub Shop
[email protected]
1600 ITB NA - 18sec
1600 Supercharged - 13psi - 15.40 @ 84.66mph
1600 Turbo - 185hp 250tq!! Going for 200
2276 Turbo - 15psi - 11.537 @ 115.74mph
Facebook-Tech-Store
[email protected]
1600 ITB NA - 18sec
1600 Supercharged - 13psi - 15.40 @ 84.66mph
1600 Turbo - 185hp 250tq!! Going for 200
2276 Turbo - 15psi - 11.537 @ 115.74mph
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Re: New injection fuel rails
NPT for the win!!!
Stripped66 wrote:The point wasn't to argue air temps with the current world record holder, but to dispel the claim that the K03 is wrapped up at 150 HP. It's not.
- Devastator
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Re: New injection fuel rails
X2!Clonebug wrote:NPT for the win!!!
Devastator's Build Thread
Sandrail
2.4 liter, supercharged Chevy Ecotec
"If everything seems under control, you're just not
going fast enough."
Mario Andretti
Sandrail
2.4 liter, supercharged Chevy Ecotec
"If everything seems under control, you're just not
going fast enough."
Mario Andretti
- Stripped66
- Posts: 1904
- Joined: Tue Sep 18, 2001 12:01 am
Re: New injection fuel rails
Some of each? The NPT is cheap and simple. The ORB allows for 1/2"-1" less total width (including the hose-end), if space is a concern.MarioVelotta wrote:I'm torn. Should I stick with my initial plan of using O-ring sealed fittings or stick to 1/4" NPT. The NPT fittings are about $3 each. The o-ring fittings are about $10 each. I'm leaning toward the NPT to keep conversion cost down.
How would you do it?
- MarioVelotta
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- Joined: Wed Mar 12, 2003 12:01 am
Re: New injection fuel rails
Here is my thought. I can have the ports drilled for a 7/16-20 port, which is a .39" hole. This would leave it open to both sizes and I could finish it either way before shipping.
Here is the new geometry to save on some machining cost. Pictured with -6 o-ring fittings. Making sure they fit because they are much larger.

Here is the new geometry to save on some machining cost. Pictured with -6 o-ring fittings. Making sure they fit because they are much larger.

The Dub Shop
[email protected]
1600 ITB NA - 18sec
1600 Supercharged - 13psi - 15.40 @ 84.66mph
1600 Turbo - 185hp 250tq!! Going for 200
2276 Turbo - 15psi - 11.537 @ 115.74mph
Facebook-Tech-Store
[email protected]
1600 ITB NA - 18sec
1600 Supercharged - 13psi - 15.40 @ 84.66mph
1600 Turbo - 185hp 250tq!! Going for 200
2276 Turbo - 15psi - 11.537 @ 115.74mph
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- kubelguy13
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Re: New injection fuel rails
will there be enough space for the fittings to tighten next to each other?
"Being ready is not what matters. What matters is winning after you get there."
- MarioVelotta
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Re: New injection fuel rails
Made sure I was good there,


The Dub Shop
[email protected]
1600 ITB NA - 18sec
1600 Supercharged - 13psi - 15.40 @ 84.66mph
1600 Turbo - 185hp 250tq!! Going for 200
2276 Turbo - 15psi - 11.537 @ 115.74mph
Facebook-Tech-Store
[email protected]
1600 ITB NA - 18sec
1600 Supercharged - 13psi - 15.40 @ 84.66mph
1600 Turbo - 185hp 250tq!! Going for 200
2276 Turbo - 15psi - 11.537 @ 115.74mph
Facebook-Tech-Store
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- Joined: Thu Feb 15, 2007 9:28 pm
Re: New injection fuel rails
That's tight!!!!
What if the fitting bottoms out tight when the high point is vertical on both fittings??
What if the fitting bottoms out tight when the high point is vertical on both fittings??
Stripped66 wrote:The point wasn't to argue air temps with the current world record holder, but to dispel the claim that the K03 is wrapped up at 150 HP. It's not.
- MarioVelotta
- Posts: 4086
- Joined: Wed Mar 12, 2003 12:01 am
Re: New injection fuel rails
These are the 0-ringed fittings. They offer a little give in positioning.
The Dub Shop
[email protected]
1600 ITB NA - 18sec
1600 Supercharged - 13psi - 15.40 @ 84.66mph
1600 Turbo - 185hp 250tq!! Going for 200
2276 Turbo - 15psi - 11.537 @ 115.74mph
Facebook-Tech-Store
[email protected]
1600 ITB NA - 18sec
1600 Supercharged - 13psi - 15.40 @ 84.66mph
1600 Turbo - 185hp 250tq!! Going for 200
2276 Turbo - 15psi - 11.537 @ 115.74mph
Facebook-Tech-Store
- Devastator
- Posts: 3493
- Joined: Tue Nov 06, 2007 6:51 am
Re: New injection fuel rails
Can you post a link to the fitting?
Devastator's Build Thread
Sandrail
2.4 liter, supercharged Chevy Ecotec
"If everything seems under control, you're just not
going fast enough."
Mario Andretti
Sandrail
2.4 liter, supercharged Chevy Ecotec
"If everything seems under control, you're just not
going fast enough."
Mario Andretti
- MarioVelotta
- Posts: 4086
- Joined: Wed Mar 12, 2003 12:01 am
Re: New injection fuel rails
This would be the 0-ring fitting type
http://www.summitracing.com/search/part ... N%20o-ring
This would be the NPT fitting type
http://www.summitracing.com/search/part ... ze/minus-6
Sorry I didn't get to your email today. I'll try to get to it tomorrow
http://www.summitracing.com/search/part ... N%20o-ring
This would be the NPT fitting type
http://www.summitracing.com/search/part ... ze/minus-6
Sorry I didn't get to your email today. I'll try to get to it tomorrow

The Dub Shop
[email protected]
1600 ITB NA - 18sec
1600 Supercharged - 13psi - 15.40 @ 84.66mph
1600 Turbo - 185hp 250tq!! Going for 200
2276 Turbo - 15psi - 11.537 @ 115.74mph
Facebook-Tech-Store
[email protected]
1600 ITB NA - 18sec
1600 Supercharged - 13psi - 15.40 @ 84.66mph
1600 Turbo - 185hp 250tq!! Going for 200
2276 Turbo - 15psi - 11.537 @ 115.74mph
Facebook-Tech-Store
- Devastator
- Posts: 3493
- Joined: Tue Nov 06, 2007 6:51 am
Re: New injection fuel rails
No problem.MarioVelotta wrote: Sorry I didn't get to your email today. I'll try to get to it tomorrow

Devastator's Build Thread
Sandrail
2.4 liter, supercharged Chevy Ecotec
"If everything seems under control, you're just not
going fast enough."
Mario Andretti
Sandrail
2.4 liter, supercharged Chevy Ecotec
"If everything seems under control, you're just not
going fast enough."
Mario Andretti