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-   -   New Demon Carburetor (https://classracer.com/classforum/showthread.php?t=38940)

Jim Wahl 02-14-2012 01:01 PM
Re: New Demon Carburetor
 
OK, I got ya. Yes those fuel wells are epoxied in. I can say I have never seen one that has fallen out on it's own. The epoxy does get old and if it is hit or pried it will break off. Easy to fix.The TQ actually is a very good piece. All the MoPar small and big blocks from '71 until the fuel injection change over used TQ's. Some of the fastest class cars still are equipped with them. I have been using and building them for others since they came out. Every factory fuel system has it's faults, fuel injection (my last two race cars were injected) included. Call me crazy, I like the Thermoquad. Jim

P.S. I have made good money building TQ's for racers also!

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BlueOval Ralph 02-14-2012 01:15 PM
Re: New Demon Carburetor
 
Does anybody know that FORD used a Thermo Quad in production?? 1974 Lincoln 460 for California.

Ed Wright 02-14-2012 01:21 PM
Re: New Demon Carburetor
 
Jim, I didn't build them for race cars. Just overhauls for people's work cars. The base didn't touch those in the problem carbs. I used modeling clay to measure the space in there, and found some thin rubber to cut pads from. Put those in all my rebuilds. Devon epoxy & those pads took care of them. I did that work for 40 years. Many customers were with me the whole time.
It was an easy test. If the idle adjustment screws had to be all the way in to get the C.O. (Sun 4 Gas Infrared exhaust analyzer) close to where it belonged, those were leaking. Just like Holley power valves or QJet metering well plugs.

Jim Wahl 02-14-2012 01:21 PM
Re: New Demon Carburetor
 
Quote:
Originally Posted by BlueOval Ralph (Post 309510)
Does anybody know that FORD used a Thermo Quad in production?? 1974 Lincoln 460 for California.
Sure, and Grace Howell ran that combo in a SS/GT Mustang for several years. How do I know that? I'll never tell. Jim:rolleyes:


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Jim Wahl 02-14-2012 01:28 PM
Re: New Demon Carburetor
 
Quote:
Originally Posted by Ed Wright (Post 309513)
Jim, I didn't build them for race cars. Just overhauls for people's work cars. The base didn't touch those in the problem carbs. I used modeling clay to measure the space in there, and found some thin rubber to cut pads from. Put those in all my rebuilds. Devon epoxy & those pads took care of them. I did that work for 40 years. Many customers were with me the whole time.
It was an easy test. If the idle adjustment screws had to be all the way in to get the C.O. (Sun 4 Gas Infrared exhaust analyzer) close to where it belonged, those were leaking. Just like Holley power valves or QJet metering well plugs.
I understand Ed. Plastic Welding is a much better fix now for race carbs. The were originally epoxied in order to be removable for cleaning out the primary jet fuel well. Replacement pieces are available still. Jim

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Myron Piatek 02-14-2012 04:31 PM
Re: New Demon Carburetor
 
Quote:
Originally Posted by Jim Wahl (Post 309508)
All the MoPar small and big blocks from '71 until the fuel injection change over used TQ's.
'78 was the last year for big blocks, but the small block trucks had Quadrajets for a little while before the fuel injection took over.

Considering the resemblance and difficulty in finding parts, I couldn't help but wonder if Holley and NHRA would consider building the correct sizes and allowing them like they did with certain Holley/Quick Fuel carbs.

Jim Wahl 02-15-2012 12:46 PM
Re: New Demon Carburetor
 
Quote:
Originally Posted by Myron Piatek (Post 309550)
'78 was the last year for big blocks, but the small block trucks had Quadrajets for a little while before the fuel injection took over.

Considering the resemblance and difficulty in finding parts, I couldn't help but wonder if Holley and NHRA would consider building the correct sizes and allowing them like they did with certain Holley/Quick Fuel carbs.
You're right Myron, also all of the Police package vehicles (small blocks) used Q-Jets during those years. I can't wait for these new Demon carbs to become available. Maybe the jets will interchange, that would help greatly. Jim

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GTX JOHN 02-19-2012 02:39 PM
Re: New Demon Carburetor
 
86-87 Large Q Jet on 360 Trucks, 89-90 Small Q Jet. Also mid 80s 318 in
Cars.

jmarkaudio 02-19-2012 11:00 PM
Re: New Demon Carburetor
 
1 Attachment(s)
Quote:
Originally Posted by SSGN (Post 309415)
Anything is better than a Holley,i mean cylinder washer

Kevin
I guess you just have not found the right person to build one... The new Demon looks like it will be a good street car carb, notice the double boosters like a QJet, they will help with economy.

Myron Piatek 07-04-2012 07:15 PM
Re: New Demon Carburetor
 
Holley and Raybestos were bought by another company and that reminded me of this thread and the TQ look-a-like. Anything new about the Demon TQ?

Hope nothing bad happens to Holley after all the progress it's made since almost going out of business several years ago.

http://www.moparmax.com/news/2012/news-vii_7-3.html


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