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Advice needed: Adhesive for Thermoquad weeping #2918900
05/05/21 02:43 PM
05/05/21 02:43 PM
Joined: Dec 2003
Posts: 140
Jefferson, GA
WaltL Offline OP
member
WaltL  Offline OP
member

Joined: Dec 2003
Posts: 140
Jefferson, GA
My 800 cfm TQ has been running crappy for a few years and late last year I noticed it had developed the (common) weep at the rear corner gasket between the horn and bowl. Pretty minor, but just not acceptable. I quit driving the car because of that and the way it was running... DemonSizzler (anyone know where he went?) last went through this carb for me way back in '03.

Anyway, a few weeks ago I took it to local carb guy to rebuild and set it up for me. Now, the ole 'cuda runs better than it has in years, but that annoying leak is still there, only less so. He told me the bowl was warped at that corner (too much to sand the whole top to level it) and that pressure testing it confirmed that it still weeped. He also refused to take a cent from me, since he couldn't warranty it. Helluva nice guy!

He said he had seen TQs come in back in the day with adhesive at the corners, and said there was a gas/oil resistant adhesive that doesn't set up hard like some epoxies that would "weld" the horn to the bowl. I've found some of these products, one of which is Permatex Permashield Gasket Dressing & Sealant. Has anyone used this or similar product to repair a weeping TQ like mine?


1972 EV2 'Cuda
1994 & '97 Dodge 2500 Diesel
1995 NSX
Re: Advice needed: Adhesive for Thermoquad weeping [Re: WaltL] #2918908
05/05/21 03:14 PM
05/05/21 03:14 PM
Joined: Jan 2003
Posts: 4,707
Moved to N.E. Tennessee
GomangoCuda Offline
master
GomangoCuda  Offline
master

Joined: Jan 2003
Posts: 4,707
Moved to N.E. Tennessee
Maybe build up the low spot with epoxy and then sand it flat.


In theory, there is no difference between theory and practice. In practice, there is.
Re: Advice needed: Adhesive for Thermoquad weeping [Re: GomangoCuda] #2919186
05/06/21 06:55 AM
05/06/21 06:55 AM
Joined: Dec 2011
Posts: 892
MA
steve70 Offline
super stock
steve70  Offline
super stock

Joined: Dec 2011
Posts: 892
MA
JB weld makes an epoxy that works with gasoline. You should be able to find it at any NAPA or AutoZone


1970 Challenger T/A 4 speed
Re: Advice needed: Adhesive for Thermoquad weeping [Re: steve70] #2919271
05/06/21 11:50 AM
05/06/21 11:50 AM
Joined: Sep 2003
Posts: 19,239
north of coder
moparx Offline
"Butt Crack Bob"
moparx  Offline
"Butt Crack Bob"

Joined: Sep 2003
Posts: 19,239
north of coder
i have a super thick piece of flat glass, 12"x12"x3/4" thick.
i take a piece of wet-dry 220 paper, glued to the glass, and using a figure 8 pattern, a light couple of those on the top of the bowel with light pressure usually trues them up.
beer

Re: Advice needed: Adhesive for Thermoquad weeping [Re: moparx] #2919489
05/06/21 08:31 PM
05/06/21 08:31 PM
Joined: Jan 2003
Posts: 15,193
Omaha Ne
T
TJP Offline
I Live Here
TJP  Offline
I Live Here
T

Joined: Jan 2003
Posts: 15,193
Omaha Ne
Originally Posted by moparx
i have a super thick piece of flat glass, 12"x12"x3/4" thick.
i take a piece of wet-dry 220 paper, glued to the glass, and using a figure 8 pattern, a light couple of those on the top of the bowel with light pressure usually trues them up.
beer


iagree And a little water won't hurt smile could also start with 400 0r 320 beer







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