Fuel pressure regulator question

[Whisler]

Are the aftermarket fuel pressure regulators for carb. use usually a set-and-forget item or do they need frequent re-adjustment?

I ask because, in looking at regulators and gauges for my Edelbrock carb., I see people complain that any fuel contact on the gauge lens will fog it beyond redemption. If it only needs to be used to set the regulator and can then be removed, I'll buy a cheap gauge and install it temporarily and not worry about it. If it needs to stay on for constant use, a cheap one will probably get destroyed in short order. In that case, I would need to buy one that has a more fuel resistant lens, which I have yet to find.

Any thoughts from those with experience on this issue?

Thanks in advance.

[Gary Lewis]

I don't know what the others are talking about. I have this regulator and gauge combo. The gauge is always part of the system and the lens hasn't fogged at all - and its been in service for several years.

But, to your question, regulators are a set-and-forget item. Or at least mine has been. So you could take the gauge off and plug the hole. However, I don't see a reason to do so.

[Whisler]

I don't know what the others are talking about. I have this regulator and gauge combo. The gauge is always part of the system and the lens hasn't fogged at all - and its been in service for several years.

But, to your question, regulators are a set-and-forget item. Or at least mine has been. So you could take the gauge off and plug the hole. However, I don't see a reason to do so.

Thanks Gary. You must be a mind reader as that is the exact regulator I was looking at.

Reading reviews on many of the gauges, you see lots of people say they got fuel on the lens and it immediately attacked the plastic. I'll just pick a gauge, set the regulator and move forward.

Thanks again.

[Whisler]

Thanks Gary. You must be a mind reader as that is the exact regulator I was looking at.

Reading reviews on many of the gauges, you see lots of people say they got fuel on the lens and it immediately attacked the plastic. I'll just pick a gauge, set the regulator and move forward.

Thanks again.

A little more help please. I am going to use a Holley pressure regulator that has 3/8 NPT inlet/outlet and wanted to use the metal line from pump to regulator. I thought " simple enough, I'll get a 1/2-20 inverted flare to 3/8 NPT adapter and flare the line at the regulator end just like the pump end". Not so simple as I have yet to locate such an adapter.

My interweb searches have not located anything. Does anyone have an idea where such an adapter can be found.

I know I could use hose barb fittings and rubber fuel line but don't like that idea for fear of a leak hitting the headers.

Any help appreciated

[Gary Lewis]

A little more help please. I am going to use a Holley pressure regulator that has 3/8 NPT inlet/outlet and wanted to use the metal line from pump to regulator. I thought " simple enough, I'll get a 1/2-20 inverted flare to 3/8 NPT adapter and flare the line at the regulator end just like the pump end". Not so simple as I have yet to locate such an adapter.

My interweb searches have not located anything. Does anyone have an idea where such an adapter can be found.

I know I could use hose barb fittings and rubber fuel line but don't like that idea for fear of a leak hitting the headers.

Any help appreciated

I'm assuming you mean 1/2" female inverted-flare to 3/8" male NPT. If so, I found this that goes to 1/8" NPT and you could adapt that up: https://www.ebay.com/itm/1-8-NPT-Male-1-2-20-Inverted-Flare-Brass-Adapter-Transmission-Line-Brake-Line-/191871861570.

Other than other similar hits of 1/8" male NPT to 1/2" female inverted-flare, I didn't find anything to 3/8".

[Whisler]

I'm assuming you mean 1/2" female inverted-flare to 3/8" male NPT. If so, I found this that goes to 1/8" NPT and you could adapt that up: https://www.ebay.com/itm/1-8-NPT-Male-1-2-20-Inverted-Flare-Brass-Adapter-Transmission-Line-Brake-Line-/191871861570.

Other than other similar hits of 1/8" male NPT to 1/2" female inverted-flare, I didn't find anything to 3/8".

Thanks for looking, Gary. I found 1/2-20 female to 1/4 NPT male or 1/8 NPT male but not 3/8. maybe they don't make such a critter.

i think I will just get the 1/4 NPT male fitting and then adapt it up to 3/8. I just don't particularly like the look of one adapter into another but you do what you have to do to accomplish the goal.

Thanks again.

[Gary Lewis]

Thanks for looking, Gary. I found 1/2-20 female to 1/4 NPT male or 1/8 NPT male but not 3/8. maybe they don't make such a critter.

i think I will just get the 1/4 NPT male fitting and then adapt it up to 3/8. I just don't particularly like the look of one adapter into another but you do what you have to do to accomplish the goal.

Thanks again.

I understand the desire not to stack adapters. But it looks like you'll need to do so. And I like the 1/4" rather than the 1/8" one. Show us how it looks.

[Whisler]

I understand the desire not to stack adapters. But it looks like you'll need to do so. And I like the 1/4" rather than the 1/8" one. Show us how it looks.

Will do.

[Whisler]

Will do.

With all the NPT adapters that I have to use, is there any problem with using Teflon pipe tape on them for the pressure regulator application

[Gary Lewis]

With all the NPT adapters that I have to use, is there any problem with using Teflon pipe tape on them for the pressure regulator application

Jein. If you get Teflon tape into the system it can plug things. So I keep the tape 2 turns back of the edge of the connector. And then I use PTFE paste on the leading edge.