JB weld - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chevyfan420 · 05-14-2005, 08:38 AM

I used jb weld to seal up the plugs on a Quadrajet i rebuilt, but i havent installed it yet. Will jb weld work on these plugs or will it leak? Has anyone had any experiences with sealing these plugs?

Nolowrider · 05-14-2005, 11:04 AM

I have never sealed and plugs like you are talking about, but JB is some tough stuff. I have used it to seal a crank case on a motorcycle with no problems. Once that stuff hardens it is nearly indestructible.

badone07 · 05-14-2005, 11:53 AM

I have and have had no problems.

MylilBowTie · 05-14-2005, 02:06 PM

It works but doesn't last. I cant think of or find the correct stuff to use but maybe someone else with know or remember about it.

ed455 · 05-14-2005, 07:54 PM

I have dominator float bowls on a Holley vacuum secondary, and I had to fill the rear acceletator pump hole. Epoxy (like JB Weld) works fine for me.

**Phuloi68** · 05-14-2005, 08:57 PM

If you clean and prep the parts you are going to use the JB weld on, it will work great, if you don't, it won't work very well. Read the direction and go from there. Rough the material you are bonding (fine sand paper or wire brush), blow it out good and clean with mineral spirits or denatured alcohol. I have also used rubbing alcohol to clean area to be bonded.
Most people who do not have good luck with epoxies don't do the preparation and it doesn't work for them.
At work, we have fixed cracked pump cases, gear boxes, etc, with JB weld and other epoxies.

MylilBowTie · 05-15-2005, 12:52 AM

I have nothing against JB weld. Its just I dont think its made to hold up long term to fuel, there was a post about this awhile back.

86swb · 05-15-2005, 07:50 AM

I have used jb weld years ago on a carb and never had any problems. That is one tuff stuff. Worked for me.

*rage'nrat638* · 05-15-2005, 02:25 PM

jb weld is the best stuff ever made.....use the 24 hour set-up time mix not the 4 hour stuff.....clean and sand it first....

jermasaurus · 05-15-2005, 05:08 PM

I just did that a few days ago on mine. I'm not sure that either sets of plugs were leaking, but for insurance then why not. The manual I bought for rochesters suggested that too. But if you had problems with it flooding or running excessivly rich then definatly try it.

05-14-2005, 08:38 AM	#1
chevyfan420 Registered User Join Date: Nov 2003 Location: Ancaster, Ontario, Canada eh Posts: 95	JB weld I used jb weld to seal up the plugs on a Quadrajet i rebuilt, but i havent installed it yet. Will jb weld work on these plugs or will it leak? Has anyone had any experiences with sealing these plugs? __________________ 80 Chevy K10 350/350turbo 86 Chevy 1/2 ton shorty project truck 79 Chevy 1/2ton 350/350turbo not much to look at... *Retired* 97 Chevy C1500 4.3/5 speed.....daily driver

05-14-2005, 11:04 AM	#2
Nolowrider Senior Member Join Date: Jan 2005 Location: New Orleans Posts: 1,365	I have never sealed and plugs like you are talking about, but JB is some tough stuff. I have used it to seal a crank case on a motorcycle with no problems. Once that stuff hardens it is nearly indestructible. Last edited by Nolowrider; 05-14-2005 at 11:05 AM.

05-14-2005, 11:53 AM	#3
badone07 Project 2 Resume Join Date: May 2004 Location: Jim Thorpe, PA Posts: 884	I have and have had no problems. __________________ John 1984 C30 Chevy Crew Cab Dually 1998 Jeep Cherokee 4x4 2004 Chevy Trailblazer 4x4 (wife's) 1970 Mustang FB fully tubed (getting 521 BBF & powerglide) 1978 Nova 2dr (going BBCaddy & S.P. th400) 1984 Monte SS (circle track car)

05-14-2005, 02:06 PM	#4
MylilBowTie Right turn Clyde Join Date: Nov 2002 Location: Cincinnati, Ohio Posts: 2,911	It works but doesn't last. I cant think of or find the correct stuff to use but maybe someone else with know or remember about it. __________________ 1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI

05-14-2005, 08:57 PM	#6
Phuloi68 Senior Member Join Date: Dec 2003 Location: Valparaiso, In Posts: 1,114	If you clean and prep the parts you are going to use the JB weld on, it will work great, if you don't, it won't work very well. Read the direction and go from there. Rough the material you are bonding (fine sand paper or wire brush), blow it out good and clean with mineral spirits or denatured alcohol. I have also used rubbing alcohol to clean area to be bonded. Most people who do not have good luck with epoxies don't do the preparation and it doesn't work for them. At work, we have fixed cracked pump cases, gear boxes, etc, with JB weld and other epoxies. __________________ Phuloi68 Indy survivor Norwood survivor Big Sandy survivor for those who fight for it... F R E E D O M has a price the protected will never know.

05-14-2005, 07:54 PM	#5
ed455 Captain Ed Join Date: Jul 2003 Location: Port Charlotte, FL Posts: 1,241	I have dominator float bowls on a Holley vacuum secondary, and I had to fill the rear acceletator pump hole. Epoxy (like JB Weld) works fine for me.

05-15-2005, 12:52 AM	#7
MylilBowTie Right turn Clyde Join Date: Nov 2002 Location: Cincinnati, Ohio Posts: 2,911	I have nothing against JB weld. Its just I dont think its made to hold up long term to fuel, there was a post about this awhile back. __________________ 1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI

05-15-2005, 07:50 AM	#8
86swb Born a Chevy Man Join Date: Apr 2005 Location: Navarre, Florida Posts: 10,221	I have used jb weld years ago on a carb and never had any problems. That is one tuff stuff. Worked for me. __________________ John or 86 (Viet Nam combat Vet-BIG RED ONE) '65-'66 1986 Chevy SWB Silverado 1984 Chevy Longbed Silverado New Kia Sportage (Wife's car and she loves it) CHEVY, American made w/pride! If you can read this, YOU NEED TO THANK A TEACHER! If you can read this in ENGLISH, PLEASE THANK A SOLDIER! GOD BLESS AMERICA AND BLESS OUR FIGHTING TROOPS

05-15-2005, 02:25 PM	#9
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	jb weld is the best stuff ever made.....use the 24 hour set-up time mix not the 4 hour stuff.....clean and sand it first....

05-15-2005, 05:08 PM	#10
jermasaurus Registered User Join Date: Dec 2004 Location: New Lenox, IL Posts: 442	I just did that a few days ago on mine. I'm not sure that either sets of plugs were leaking, but for insurance then why not. The manual I bought for rochesters suggested that too. But if you had problems with it flooding or running excessivly rich then definatly try it.



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