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thermoquad carbies 

 

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 Post subject: thermoquad carbies
Posted: Thu Feb 03, 2005 6:22 pm 
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thermoquad carby rebuild anyone know anything about em?
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 Post subject: anyone?
Posted: Thu Feb 03, 2005 6:28 pm 
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I just want to know what cfm the carbie i have has and i guess general opinions. i have a good book about them that shows just about everything u could think of to tweak em but it doesnt tell me what cfm it has. the model number is 9144s and its off a 302 clevo in a xc fairmont wagon.
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Posted: Thu Feb 03, 2005 10:30 pm 
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To many stories etc on sizes, some state 600cfm, 730cfm, 800 and 850, who bloody knows, all I can tell you is they are one of the best production carbies ever made if in good order and setup right, far better than a Holley straight out of the factory.

But I don't recommend to use them with LPG, cold petrol and hot plastic when switching back to petrol can cause them to crack.

 

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Posted: Sat Feb 05, 2005 11:37 am 
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they are not that hard to rebuild, I have done 1 years ago but the only suggestion is that you take it apart slowly so you can see where everything came from and have a exploded view diagram of the carby.

 

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Posted: Sat Feb 05, 2005 10:27 pm 
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I believe in Australia we only used the 750cfm version. There was an 850cfm factory version in the US as well as a 1000cfm aftermarket version.

They are not that hard a carby to rebuild, its just that a Holley is so easy to rebuild!! Also in comparison a Holley is a very basic carby in function.
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Posted: Fri Feb 11, 2005 6:43 pm 
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I have found that whenever I have rebuilt one I always used to replace the floats as they are plastic and start to soak up fuel as they get some age on them.
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Posted: Fri Feb 11, 2005 7:00 pm 
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NSW, Australia

bundy_bears wrote:
I have found that whenever I have rebuilt one I always used to replace the floats as they are plastic and start to soak up fuel as they get some age on them.



I have been told stories about factory brass ones collapsing by a mate that used to rebuild them all the time in a performance workshop, his preference is good plastic ones but he mentioned of heaps of float failures.
This bloke is a Chevy man but loves Thermoquads over any other 4 barrel carby, he can show anyone how cheap it is to get over 225rwhp with good idle and economy on a XC-XE based 351, using only the factory carby (rejetted and tunned), intake, headers, sports exhaust, re-graphed dissy and certain spec cam, as long as the engine is in good condition, it isn't big hp but it is reliable and good economy for a Cleveland, he reckons they can get 25mpg out of them

I find the glued on jet caps often leak, bastards of things to seal, this causes engine flooding and destroys those cheap a*** Fuel-miser throttle plate gaskets.

 

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93 Ford Maverick LWB automatic petrol guzzler (gets stuck where Deli doesn't, big pumpkins :evil:)
97 S2 Mitsubishi Delica LWB (off the road getting v8 transplant) http://tmacmechanical.com.au/

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