squirrels

I was checking my fuel filter for debris since my car'd been stalling out lately. Turns out I stripped the fuel filter nut trying to put in a new filter. Any ideas where I can get a new one? I'm hoping that just the nut's stripped...if the inside's badly stripped I may need to take the carb to a machine shop and get it re-tapped.

I know your average autoparts store doesn't carry them...is Rochester still around?

Mark
86 IROC LG-4

84TransAm

Hey just go to a junkyard, they are all over the place, and you can get them cheap as hell, like .50 or so ( Or just stick it in your pocket )
Also, Edelbrock purchased Rochester ( i believe) so they are the ones to talk to for a new one.

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--Steve S-- 84 Trans Am 305 (cough)LG4(cough), 5 speed, completely stock emissions restricted slow 150 hp(chilton rating) 240 torquer that needs RELEASE!!!!

P.S. Daily Driver

squirrels

I actually found a self-tapping inlet nut replacement...but I had to put a neoprene O-Ring next to the gasket. Does anyone know if Neoprene holds up to gas? I know rubber will dissolve.

Mark

five7kid

iTrader: (14)

According to the "Parker O-ring Handbook", neoprene is unsatisfactory for gasoline. Nitrile (also known as Buna-N), fluorocarbon (Viton), polysulfide, and fluorosilicone are recommended.

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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R. 2.73 unlimited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LB9 w/ZZ3 cam, TBD heads, exhaust, paint, etc.).
57 Bel Air, my 1st car. 0.030 over 396, Weiand Action+, Edelbrock 1901 Q-Jet, Jacobs Omnipack, 1-3/4" headers, TH400 w/TCI Sat Night Special conv & shift kit, 3.08 10-bolt, AMSOIL syn lubes bumper-to-bumper. Best 15.1 @ 5800' Bandimere. Daily driver while Camaro was being put together.

squirrels

Darn...OK where can I get an O-ring made of one of those substances? Do they carry them at auto parts stores?

Mark

squirrels

Also, could I use some silicone or some kind of form-a-gasket to make the seal? I know it'd be permanent, but I could put an inline filter in there.

Mark

five7kid

iTrader: (14)

You can use silicone (RTV), but I wouldn't call that "permanent" (JB Weld would be permanent). Just keep the excess out of the flow path.

Why do you need something along with the gasket? If you have too big a gap, you may not have screwed/tapped it in far enough yet. Also, I hope you are taking it apart to remove the shavings the self-tapping fitting created.

squirrels

Yeah, cleaned it out after I tapped it...but the Q-Jet is meant to seal internally at the inlet nut, and this has an external seal, so it's all jury-rigging....if silicone holds up against gasoline, then that may be the ultimate solution. I'm tired of trying to match up gaskets for this thing.

Thanks
Mark

squirrels

Are you sure about the Buna-N? I called the company that made the O-Rings and they said that they were made of Buna N70 but that they weren't oil/fuel resistant.

Just wanted to double-check.

Mark

El Guapo

The best thing to do is get it sealed up and do the inline filter thing. If that gets messed up somehow, you're only talking of two small length of hoses and a filter. W/ the Q-jet you can actually do some permanent damage.

My friend actually stripped his inlet nut, and we were dripping gas on the manifold on the way back to get somewhere to fix it. Not a good feeling at all. After seeing/experiencing that, lm gonna have an inline for my Qjet for sure.

Just my opinion.

Clayton

five7kid

iTrader: (14)

I have an older book (1982), but it lists Nitrile N497-70 as "1-Satisfactory" (1 best, 4 worst) for gasoline.

squirrels

Well, it's leaking, so I guess it's RTV or nothing. Might have to do that In-line thing after all.

Mark

five7kid

iTrader: (14)

You still need that fitting in the carb even if you have an in-line filter. The in-carb filter isn't affecting your leakage. If having to re-RTV it each time you need to replace the fuel filter, that really isn't a big deal. But, if you go with the in-line filter, consider JB Weld around the fitting. It is gasoline-compatible and does a decent job of sealing. It should be considered permanent, of course.

squirrels

I know...I think I'm just gonna use the RTV for now...it's too cold to be sitting in the driveway tampering with fuel lines.

Might put an In-line in come spring...if I do, should I remove the carb filter completely?

Thanks for all your help
Mark

five7kid

iTrader: (14)

If you have an in-line filter, the only reason to keep the stock in-carb filter is for the anti-drainback check valve feature - if you don't have a dry-carb problem after sitting, you don't need that feature (I removed the check valve from the filter in the Camaro's carb to increase flow).

The only reason not to run the in-carb filter is if it is a restriction, or perhaps if you've had to do a "permanent" fix on the inlet fitting. I run the in-line only on the 396 to eliminate flow restriction possibilities (don't even know if it's a problem - never ran it with the in-carb filter).

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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R. 2.73 unlimited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LB9 w/ZZ3 cam, TBD heads, exhaust, paint, etc.).
57 Bel Air, my 1st car. 0.030 over 396, Weiand Action+, Edelbrock 1901 Q-Jet, Jacobs Omnipack, 1-3/4" headers, TH400 w/TCI Sat Night Special conv & shift kit, 3.08 10-bolt, AMSOIL syn lubes bumper-to-bumper. Best 15.1 @ 5800' Bandimere. Daily driver while Camaro was being put together.