fuel bowl vent whistle question

[vector1]

anybody notice how the fit of the whistle to the metering block is crappy? gaps around the edges, maybe allowing fuel into the vent tube? anybody ever experiment with sealing the whistle to the metering block? any noticeable difference? inquiring minds? nothing to do?

[Rick Parker]

These are a much better version.

http://www.braswell.com/products/mba_vts.htm

Brasswell carbs are high quality version of a Holly. Used in hardcore circle track and Cup racing. I don't think I have ever heard anyone mention them here.

[Learjockey1]

Now, I know who makes Roush's primary throttle stop.

When you step into this arena, as in the NASCAR providers, not much hoopla, just the stuff that works.

I go into the shop at Mooresville and the guys let me walk aound the back of the shop. Great group of folks, I get ideas and buy more stuff. Their "Cup engines" are amazing.

[Rick Parker]

The Cup guys are the Guru's of the pushrod engine.

[vector1]

these guys have some pretty good looking stuff, not the braswell selection though.

http://blp.com/index.php

[vector1]

i will say jb weld does not like gas

[Tom Wells]

vector1,

Here's a quote from the JB Weld web site:

Mechanics -- you can use J-B WELD with confidence. It is designed for safe, reliable, permanent repairs in engine compartments and heated environments up to 500° F. It's strong as steel and impervious to water, gasoline, chemicals, and acids.

Reason I ask is that I just used it to bond a return gasoline fitting into a gas tank filler pipe!

Have you had an, um, opposite experience you want to tell us about

Tom

[vector1]

i was going to be slick and plug the sloppy vent whistles on the carb where they meet the block so i thought i would use jb weld, like you quoted above.

everything clean and everything, or so i thought, the stuff looked like it released from the metal and i had no problem taking the whistles out and cleaning the metal surfaces or plastic whistles. maybe the surfaces weren't rough enough. i could probably cut the jb weld with a knife. i use a fuel additive so maybe that did something.

i used some on fittings inside the block also

[Tom Wells]

vector1,

I just went out and "tested" the brass fitting I JB welded to the filler pipe. That sucker is immovable!

Of course, I haven't run any gasoline through it yet

Tom

[vector1]

too bad you don't have a test piece to put in a jar of gas and sit on the shelf.

[StanJ]

JB Weld was reliably "gasoline proof" up until the addition of ethanol became common. Regarding it's ability to degrade various epoxies, synthetic rubbers, and even some alkylid-based polymers, ethanol is just as nasty as methanol.

We use Miller-Stephenson's MS-904 (based on Shell Petroleum's "Epon" resin) for sealing applications that require that sort of strength, cured hardness, and chemical resistance.

[vector1]

thanks stan good to know. good luck on your carb competition!