Good Boost Reference Fuel Regulator
12-07-2015, 07:38 PM
#21
LULZ...
Hardly, I was hoping you would share your experiences as to why you feel that way. It's a pretty blanket statement considering NPT has been supplying CNG delivery systems for decades upon decades, as well as water & propane systems, I would like to know where your thought process lies.
Hardly, I was hoping you would share your experiences as to why you feel that way. It's a pretty blanket statement considering NPT has been supplying CNG delivery systems for decades upon decades, as well as water & propane systems, I would like to know where your thought process lies.
12-08-2015, 07:07 AM
#23
Obviously something is only good, bad or better when compared to something else, & only in a specifc context.
The examples are, of-course, contextual. If it can work for those applications it can work in certain automotive ones as well.
ORB fittings, like the Areo's use, have its advantages, in certain circumstances. That is not, necessarily, a reason to make such blanket statements. A lot of noobs probably browse this forum & when they read stuff like that they can develop un-informed biases, not understanding the context. If ORB was so readily available as to have taps & dies at the local hardware store it may well become a viable Union interface system. But it isn't.
I have used both & understand the circumstances of those applicational downfalls. It revolves, in my experience, more to do with the material & tolerance spec'ing from the component manufacturers that leads to issues with NPT.
First off NPT was not specifically designed for Al. It's torsion & tension interface was designed primarily for much harder materials like steel.
Second, NPT needs a certain thread-depth to function properly. ie., to seal without stripping.
There are gong to be of-course issues with stripping threads on NPT unions with Aluminum. The biggest issue here has always been aeroquip, & others, tolerancing fittings & inadequate surface hardening. For those that don't know the intricacies, NPT has a min-max OD thread size of the taper for each ID. So a hole tapped for NPT has a range tolerance as well.
One manufacturer of a certain part can set up this tolerance, say for a hole where the min-max ID is on one end of the spectrum & a different manufacturer can set up the OD of the threads to another end of the tolerance spectrum. If this is the case the NPT fitting will only thread in a couple threads & strip, or thread in as far as it can & not create a seal.
Aeroquip has always been the biggest issue with NPT. They size their OD's on the large end of the spectrum so almost every time it will only thread in a couple threads & then strip. Aeroquip NPT fittings are, therefore, something I avoid.
Parker & Russel, on the other hand, make very nice stainless & anodized steel fittings in NPT-AN that have always spec'd properly & worked perfectly for me.
Bottom line is avoid inferior spec'd NPT products. Not NPT as a whole.
The examples are, of-course, contextual. If it can work for those applications it can work in certain automotive ones as well.
ORB fittings, like the Areo's use, have its advantages, in certain circumstances. That is not, necessarily, a reason to make such blanket statements. A lot of noobs probably browse this forum & when they read stuff like that they can develop un-informed biases, not understanding the context. If ORB was so readily available as to have taps & dies at the local hardware store it may well become a viable Union interface system. But it isn't.
I have used both & understand the circumstances of those applicational downfalls. It revolves, in my experience, more to do with the material & tolerance spec'ing from the component manufacturers that leads to issues with NPT.
First off NPT was not specifically designed for Al. It's torsion & tension interface was designed primarily for much harder materials like steel.
Second, NPT needs a certain thread-depth to function properly. ie., to seal without stripping.
There are gong to be of-course issues with stripping threads on NPT unions with Aluminum. The biggest issue here has always been aeroquip, & others, tolerancing fittings & inadequate surface hardening. For those that don't know the intricacies, NPT has a min-max OD thread size of the taper for each ID. So a hole tapped for NPT has a range tolerance as well.
One manufacturer of a certain part can set up this tolerance, say for a hole where the min-max ID is on one end of the spectrum & a different manufacturer can set up the OD of the threads to another end of the tolerance spectrum. If this is the case the NPT fitting will only thread in a couple threads & strip, or thread in as far as it can & not create a seal.
Aeroquip has always been the biggest issue with NPT. They size their OD's on the large end of the spectrum so almost every time it will only thread in a couple threads & then strip. Aeroquip NPT fittings are, therefore, something I avoid.
Parker & Russel, on the other hand, make very nice stainless & anodized steel fittings in NPT-AN that have always spec'd properly & worked perfectly for me.
Bottom line is avoid inferior spec'd NPT products. Not NPT as a whole.
Last edited by gtfoxy; 12-08-2015 at 07:23 AM.
12-08-2015, 08:12 AM
#24
9 Second Club
Bottom line...NPT is ****.
By nature they're destructive to the threads they pair with and they seal poorly. It's common knowledge additional sealers are required, whether tape, paste, etc etc
So a taper thread designed to seal because it's tapered tight into its mate...but doesnt seal so additional sealer is needed anyway.
Really..what's the point in that ?
And then use it a few times and the threads are fucked anyway especially as said when soft metals are used lol
One of the worst possible options you could ever use on a fuel system
By nature they're destructive to the threads they pair with and they seal poorly. It's common knowledge additional sealers are required, whether tape, paste, etc etc
So a taper thread designed to seal because it's tapered tight into its mate...but doesnt seal so additional sealer is needed anyway.
Really..what's the point in that ?
And then use it a few times and the threads are fucked anyway especially as said when soft metals are used lol
One of the worst possible options you could ever use on a fuel system
12-08-2015, 09:01 AM
#25
I have no issues with the NPT fittings I use, even after repeated assembly/ disassembly, with fuel systems. I have fitting from over a decade ago that I have been using at various times. YMOV's.
Last edited by gtfoxy; 12-08-2015 at 09:11 AM.
12-09-2015, 01:51 AM
#26
Look at how bad the NPT threads are in an edelbrock fuel rail. I seriously think they cut those with a chisel and hammer. I can't tell you how many of those I have had to repair. It is a guaranteed failure at some point if the threads are not dressed before use. Most guys don't know/do this.
And guess what, I think edelbrock is the only company still putting NPT threads in aluminum fuel rails.
And guess what, I think edelbrock is the only company still putting NPT threads in aluminum fuel rails.
12-09-2015, 08:14 PM
#28
Look at how bad the NPT threads are in an edelbrock fuel rail. I seriously think they cut those with a chisel and hammer. I can't tell you how many of those I have had to repair. It is a guaranteed failure at some point if the threads are not dressed before use. Most guys don't know/do this.
And guess what, I think edelbrock is the only company still putting NPT threads in aluminum fuel rails.
And guess what, I think edelbrock is the only company still putting NPT threads in aluminum fuel rails.
12-10-2015, 09:11 PM
#29
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Well I certainly did not want to stir up any controversy, I appreciate every ones input. The whole idea behind this regulator is that I know I will need something to support 800+ hp. Just trying to get an idea on parts. I will be changing out the rails and lines to support it all as well.
12-11-2015, 04:13 AM
#31
9 Second Club
Well I certainly did not want to stir up any controversy, I appreciate every ones input. The whole idea behind this regulator is that I know I will need something to support 800+ hp. Just trying to get an idea on parts. I will be changing out the rails and lines to support it all as well.
I've used Magnafuel, Edelbrock, Turbosmart and Aeromotive all with good success. It's an important part, I see no reason to look for the cheapest model out there.
12-12-2015, 09:00 AM
#32