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Twin Carby's

Featured Replies

:) finally i gat my carbs on, the camshaft and heavy duty valve springs and extractors and zorst on. Sounds bloody awesome. Even convinced me mate with his 1jz cressida that old school is beta. :( anyways hope u all like

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nice, neat engine bay :(

what's it go like now? had it tuned? what cam did you put in?

  • Author

she goes like a rocket, they are solexs, 40mm, and the cam is a 275* tighe i think, comes on at 3000 rpm. its an instant way to fry clutches ill tell u :(

Nice work there dude :(

It'd boogie for sure... but with fun comes a price unfortunately.. and that would be the juice in this instance.

Kangaroosa is in the same boat as you also. hahaha

nah SUs can be good on fuel. i noticed no difference in consumtion from aisan singlecarb to twin SUs, you use less fuel because there's more torque down low, and no accelerator pump, and more fuel cos you can ring the tits off it and there's sufficient air to make big powah :(

oooo

 

a new friend ! !

 

So cool :) !

 

Yes, i too have found that side drafts make a difference to ye old K motor :(

any decent carb makes a difference, so long as the motor needs it.

 

my DCD weber died on my 5k. so i went back to a stock aisan for a bit. the thing lost a good 20% or more powerwise. it is only neck and neck with a new v6 commodore up to 100 now. sad. sob

noob question:

 

what's the difference between sidedraught and SU and what does SU stand for?

Side draft is like down draft, its only the type of carburation, (down / side ) where as Side drafts is more like a slang term for the side draft carburetors, what ever they may be - Solex's, Delorto's, Webers..

 

SU stands for Skinners Union. Long story short, its just a different type of carburetor.

 

Su%20Carburetor.jpg

downdrafts and sidedrafts work on venturis and jets to meter fuel based on air vacuum conditions

 

an SU has a sliding piston which effectively changes the venturi size, and as the pistons moves, it moves a tapered needle in and out of a jet to meter fuel

 

personally i consider SUs superior in every way to downdrafts and sidedrafts

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