JB compound to stop a small header leak? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

phlegm · 11-12-2006, 03:55 PM

Leak is in the center of the collector, welding probably wouldnt get it, I have been told the JB stuff works good. I know the heat range only goes to 500 but my buddie told me he knew somone who patched a mani leak with it.....

any expierence out there?

ain't_done_yet · 11-12-2006, 04:05 PM

Ah yes...JB Weld. Their home is right here in Sulphur Springs. I know the owner of the company. Is good stuff. The stuff sets up STRONG!

BarryB · 11-12-2006, 04:13 PM

Yeah it might work, but make sure it is clean then rough up the surface to get a good bond. Out of curiousity what exactlly is leaking the collector gasket or is there a hole in the collector?

QKENUF4U · 11-12-2006, 04:35 PM

being its down low and wont get nearly as hot as at the head it may work. i tried to use it on my toyota one time and it turned to water as soon as the exhuasut manifold got hot.

phlegm · 11-12-2006, 04:39 PM

where the 4 tubes combine, inside their, thats why a weld would be so tough. Its not the gasket (per the trusted exhaust guy)

mbgmike · 11-12-2006, 06:22 PM

We used it on a stock cast exhaust manifold and it lasted 3 or 4 months

CPNEJR · 11-12-2006, 06:39 PM

we tried it and many other things on the headers that were in our 1 ton but when down shifting the backpressure blew it out

Bob D · 11-12-2006, 07:36 PM

I had a Headman header on a 1980 Toyota PU that lasted 12 years. It kept rusting out in the same place you mentioned and I just took it to the local garage and they welded it twice during it's life time.

Bob

They have to weld it from inside the collector.

Sweet72 · 11-12-2006, 10:06 PM

I tried JB Weld on my '72's stock exh. Y-Pipe and after two days of smelling burning epoxy,

it finally said "I'm outta here" and fell to the blacktop.

GMCMAX · 11-12-2006, 11:28 PM

If you want to putty it, use muffler and tailpipe putty from NAPA, the hotter it gets, the harder it gets, had good luck on a 327 mani with it.

casterbuster · 11-12-2006, 11:48 PM

jb weld will not work, it does not expand and contract the same way the steel in the headers will, It will not last

11-12-2006, 03:55 PM	#1
phlegm Still Green but learning Join Date: Nov 2004 Location: Central NC Posts: 1,895	JB compound to stop a small header leak? Leak is in the center of the collector, welding probably wouldnt get it, I have been told the JB stuff works good. I know the heat range only goes to 500 but my buddie told me he knew somone who patched a mani leak with it..... any expierence out there? __________________ -- Cory 71 Cheyenne 10 - SWB, 350, "3 on the tree" AC cab 07 Suburban LTZ 4x4 2010 Acura TL 98 Mastercraft "FrankenStar" 225 27253 UPS/USPS IIOY....nope never was

11-12-2006, 04:05 PM	#2
ain't_done_yet and won't ever be Join Date: Jun 2000 Location: Arbala, TX Posts: 158	Re: JB compound to stop a small header leak? Ah yes...JB Weld. Their home is right here in Sulphur Springs. I know the owner of the company. Is good stuff. The stuff sets up STRONG! __________________ '82 SWB 1/2T Silverado (project) '96 SWB 1/2T Silverado, factory leather, Sony CD, Sirius Satellite 2006 Ram 3500 Megacab 4x4 SRW, AMSOIL/Injen CAI, AMSOIL By-Pass, Mag-Hytech cover, AMSOIL Lubriants throughout, and much more!! CHANGE YOUR MIND...NOT YOUR OIL Last edited by ain't_done_yet; 11-12-2006 at 11:00 PM.

11-12-2006, 04:13 PM	#3
BarryB Senior Member Join Date: Jul 2006 Location: Blountville, Tn. Posts: 3,904	Re: JB compound to stop a small header leak? Yeah it might work, but make sure it is clean then rough up the surface to get a good bond. Out of curiousity what exactlly is leaking the collector gasket or is there a hole in the collector?

11-12-2006, 04:35 PM	#4
QKENUF4U Senior Member Join Date: Jan 2005 Location: SUNNY WARM BIKE RIDING COTTONWOOD ARIZONA Posts: 2,097	Re: JB compound to stop a small header leak? being its down low and wont get nearly as hot as at the head it may work. i tried to use it on my toyota one time and it turned to water as soon as the exhuasut manifold got hot.

11-12-2006, 04:39 PM	#5
phlegm Still Green but learning Join Date: Nov 2004 Location: Central NC Posts: 1,895	Re: JB compound to stop a small header leak? where the 4 tubes combine, inside their, thats why a weld would be so tough. Its not the gasket (per the trusted exhaust guy) __________________ -- Cory 71 Cheyenne 10 - SWB, 350, "3 on the tree" AC cab 07 Suburban LTZ 4x4 2010 Acura TL 98 Mastercraft "FrankenStar" 225 27253 UPS/USPS IIOY....nope never was

11-12-2006, 06:22 PM	#6
mbgmike Registered User Join Date: Aug 2005 Location: Pasadena,Tx /Pto Pta DR Posts: 5,415	Re: JB compound to stop a small header leak? We used it on a stock cast exhaust manifold and it lasted 3 or 4 months

11-12-2006, 06:39 PM	#7
CPNEJR Registered User Join Date: Sep 2003 Location: Franconia,N.H. Posts: 1,029	Re: JB compound to stop a small header leak? we tried it and many other things on the headers that were in our 1 ton but when down shifting the backpressure blew it out __________________ (Only) Member of the CPNE Fan Club Aint that the truth 67 C-10 350 with 3-speed tranny and 308 gears swb step 82 Z28 Camaro 355 small block over 350 hp and a borg warner super t-10 (blown engine) 72 Chevy K20 Suburban (future project) 70 Chevy K20 now 68 GMC K2500 2003 Chevy 2500hd ccsb 4X4 (daily driver)

11-12-2006, 07:36 PM	#8
Bob D Rolled on Paint Club Join Date: Jan 2006 Location: Windham, CT. Posts: 232	Re: JB compound to stop a small header leak? I had a Headman header on a 1980 Toyota PU that lasted 12 years. It kept rusting out in the same place you mentioned and I just took it to the local garage and they welded it twice during it's life time. Bob They have to weld it from inside the collector. __________________ 1970 GMC 1500 swb fleetside SB 355ci. Smog heads Summit 1102 cam Performer intake and carb. Finally in about 1 piece in the yard. Last edited by Bob D; 11-12-2006 at 07:38 PM. Reason: forgot something

11-12-2006, 10:06 PM	#9
Sweet72 Registered User Join Date: Nov 2003 Location: Alexandria, VA Posts: 1,534	Re: JB compound to stop a small header leak? I tried JB Weld on my '72's stock exh. Y-Pipe and after two days of smelling burning epoxy, it finally said "I'm outta here" and fell to the blacktop. __________________ '72 GMC SWB C1500 Custom, frame-off in progress. 383 SBC, 9:1CR, Comp Cams XE262H, Scat internal balanced crank, Eagle SIR 6" rods, Keith Black dish pistons, Dart Iron Eagle 72/180 heads, Weiand Stealth intake, Stewart stage I water pump, Holley 4bbl vac sec, TH350 with B&M Shift Improver Kit. 12 bolt positraction.

11-12-2006, 11:28 PM	#10
GMCMAX Active Member Join Date: Jan 2006 Location: Lower Mid-East Ca. Posts: 326	Re: JB compound to stop a small header leak? If you want to putty it, use muffler and tailpipe putty from NAPA, the hotter it gets, the harder it gets, had good luck on a 327 mani with it. __________________ Never try to teach a pig to sing; it wastes your time and annoys the pig! Gets More Chicks My lugnuts require more torque than your honda makes! 68 GMC, 4X4 conversion w/73 k20 running gear and springs, 350 4spd, 4.10's, D44 powerlok front, 14BFF govlock rear, 33" tires, lifted 4".

11-12-2006, 11:48 PM	#11
casterbuster Mejor Que Nada Join Date: Jun 2006 Location: texas Posts: 232	Re: JB compound to stop a small header leak? jb weld will not work, it does not expand and contract the same way the steel in the headers will, It will not last __________________ The only thing that separates "Dreams" from "Reality" is TIME and MONEY!!!



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