New Demon Carburetor - Page 2

Jim Wahl · 02-14-2012, 01:01 PM

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!

.

BlueOval Ralph · 02-14-2012, 01:15 PM

Does anybody know that FORD used a Thermo Quad in production?? 1974 Lincoln 460 for California.

Ed Wright · 02-14-2012, 01:21 PM

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

Quote:

Originally Posted by BlueOval Ralph

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

.

Jim Wahl · 02-14-2012, 01:28 PM

Quote:

Originally Posted by Ed Wright

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

Quote:

Originally Posted by Jim Wahl

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

Quote:

Originally Posted by Myron Piatek

'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

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

Quote:

Originally Posted by SSGN

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

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

02-14-2012, 01:01 PM	#11
Jim Wahl Veteran Member Join Date: Jan 2002 Location: Central Florida Posts: 5,844 Likes: 666 Liked 683 Times in 129 Posts	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! . __________________ Jim Wahl....NHRA #2239 S/SS - IHRA # 8 Stock, D2 Stock Champion (forever I guess) 2019 Baby Gators Stock Champion 2009 NHRA D2 National Open Stock Champion 1982 NHRA D2 West Palm Beach LDRS SS Runner Up Past President, Southern Stock / Super Stock Association. Last edited by Jim Wahl; 02-14-2012 at 01:03 PM.

02-14-2012, 01:15 PM	#12
BlueOval Ralph Banned Join Date: Feb 2008 Posts: 852 Likes: 0 Liked 0 Times in 0 Posts	Re: New Demon Carburetor Does anybody know that FORD used a Thermo Quad in production?? 1974 Lincoln 460 for California.

02-14-2012, 01:21 PM	#13
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	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. __________________ Ed Wright 4156 SS/JA

02-19-2012, 02:39 PM	#18
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,733 Likes: 2,799 Liked 2,483 Times in 697 Posts	Re: New Demon Carburetor 86-87 Large Q Jet on 360 Trucks, 89-90 Small Q Jet. Also mid 80s 318 in Cars.

07-04-2012, 07:15 PM	#20
Myron Piatek VIP Member Join Date: Nov 2001 Location: Florida Posts: 1,542 Likes: 34 Liked 138 Times in 51 Posts	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