Carter TQ + boost = win?

[Jack91]

Hi all (sorry mods, we need a carby section) (sorry members, long post)

Got a thermoquad sitting on the shelf off my bronco, only chucked a new holley on because I was in too much of a rush to fix it (was overfueling). Was going to sell it but I now have a need for a double pumper and want to rebuild it for a boosted windsor.

Apparently these are the hardest carb ever to rebuild. Anyone got any tips or will I get full instructions with a rebuild kit, Ive never bought one.

Im pretty sure that the plastic bit is still all good, and Ive tried looking but if it is cracked, can you buy a metal body for it? Was planning on fully boxing it to reduce the chance of blowing it out if I cant get another body (dont think it will last long at 10+psi).

Before anyone bags me out for not spending $1000 on a blow thru bg, edelbrock, or a csu built holley, this is meant to be a super budget build, the motor was stupid cheap and I just want to do something crappy and not care for once! Done 3 and a half bare metal restos in 2 years and Im burnt out with replacing damn bushes and sanding damn primer.

Ive got fuel system sorted with a 1:1 reg and a bosch 044, but I cant wrap my head around why I need the 1:1 if the carb is boxed, wont I just need bigger jets? If the whole thing is pressurised, wouldnt it work as per normal? Never took physics in school. Or maybe I did. Dunno.

Should I care about sealing throttle cable in the box? Apart from adapting a t-b-w system somehow, I dont know how you would seal boost well in the box.


Not much info around on this, I know efi is easier but its too many wires and I dont know and refuse to learn about playing with ecus. At least with a carb and a wideband I can get it damn close myself. Appreciate any input

[sprintman1]

Personally put Thermoquad and Quadrajet together as top carbs little understood by the majority of tuners. Thinking parts supply might be the deal breaker compared to a Holley

[Jack91]

Originally Posted by sprintman1

Personally put Thermoquad and Quadrajet together as top carbs little understood by the majority of tuners. Thinking parts supply might be the deal breaker compared to a Holley

I expect you are right. Was planning to just drill the jets and Ive heard of filing the metering rods. The only things I should need new are the floats and perhaps a needle and seat. Which hopefully are available fairly easily

[damo76]

if that thermoquad was factory fitted on your bronco, have a look see if its the bigger one. my memories crap but there is a now hard to find thermoquad which has like inch and half primaries instead of the inch and quarter ones from the falcons and mopars.

[damo76]

great carby, tune it by bending the the metering rods and wires ect, they are set and forget, secondaries sound great aswell

[Jack91]

Ordered the kit today, no luck with nitrophyl floats though. Apparently you can get drill brass ones and inject a resin so it won't crush. Not sure of the rarity of my carb, I imagine it's the same one from all the way back on clevos so I doubt it's rare. I read about some racing ones that were 1000cfm, they were in mopars though I think