You should be able to find it at NAPA. I have Permatex Valve Grinding Compound 34B (Item #80037)

PM me if you have any ? I'll give you a toll free # to contact me at.

Cool,Thanks
It make sense and is worth a try if it's leaking at the flare. I hope he doesn't have 37 degree fittings mixed up with 45 degree?
You can get valve grinding compound at any auto parts store I would think.

Yes I know who Ken is, ran his cly heads on one of my hemis a long time ago.

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Heads-Up point on the flare angles!! Should be able to spot that visually and a good thing to look at.

A few months ago my car sprung a massive leak right in the middle of a long length of Earls perform O flex -8 braided hose.
I couldn,t believe it since they were only about 5 years old as well . I didn,t know what to think so after a little investigating i saw that quite a few other people have recently had this same probelm as well and there is even a disclaimer about it on Earl,s website !!!

Though it doesnt sound like that,s your problem( right now at least) i figured i,d mention it since it sounds like were both running the same lines of the same age and probably the same fuel.

Suposedly certain additives in SOME pump gas can break these and other standard fuel hoses down over time. They mention if in doubt to run the teflon lined hose !

After reading that i was seeing as how i had about $500 worth of hose and fittings in the car and would have to
change over to teflon would require all new fittings .

Well long story short i no longer trusted the rest of the hoses after that and there was no way i was gonna spend another 500 +++ .................so I ended up just running all new hard lines and for the flex connections i used R9 rated hose which has a liner to combat the nasty additives and is availible at any decent auto parts store.

Like i said this is probably not your issue ( at least not right now) Just something to consider for anyone running these lines or considering it.

I got lucky since it happened in my driveway and when the car was still cold ........it could have been alot worse.

If you can smell gas fumes in your garage with no visible leaks , that,s fuel seeping though and slowly breaking down those nice pretty expensive lines.

Lapping the sealing surface is an old trick, we used to do that on leaks in 3000 psi hydraulic systems but the conical seals mentioned earlier are a sure-fire fix for stubborn leaks at the flare.

I don't know, I've worked with AN fittings for years up to 1' in size (16) with few problems. I've never had to resort to doing anything other than making sure that both faces were clean with no burrs. As to mixing and matching SAE 45 degree fittings with AN 37 degree fittings, I don't think the nut threads are compatible enough to get this done. Don't know though, never tried it. This link is an excellent discussion on fittings.

http://www.malonespecialtyinc.com/tech.htm#anchor136590

just a copy & paste from earls plumbling ...
Installation Notes
Fuel manufacturers may have added any number of new unpublished additives to their blends. It is therefore difficult to know how the tube compound used in the inner liner of our Perform–O–Flex or any other brand of elastomeric hose will react with a specific fuel. Because of the unknowns described above, we are unable to guarantee that the hose listed is the best possible product to use with any specific fuel. If in doubt use teflon lined hose. Not to be used with brake fluid.


i,m not bashing them... i still think they make the best performance plumbling products out there ...I give them props for posting this info just wish they would have found out sooner

2 things come to mind, 1. slide the fitting back and check the flair for cracks or pits. 2. did you flair it with an AN flair tool? they are 37* not the standard 45*. either one of those will cause it to leak..

braided line