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HIF carb puzzle

Posted: Sun Jul 05, 2020 11:02 am
by woodypup59
Can anyone describe how the choke function works on this carb (tagged MAC 10031).

From a '92 K British Open.

The red arrow shows how the choke cable pulls the lever.

But I don't see what it does, the spindle does not move the jet down - theres no mechanical connection.

Re: HIF carb puzzle

Posted: Sun Jul 05, 2020 11:34 am
by wantafaster1
It opens another internal passage for fuel. Great carbs I'd use it on my rally car but not allowed.

Re: HIF carb puzzle

Posted: Sun Jul 05, 2020 1:09 pm
by surfblue63
Yep, choke turns a spindle which opens another jet. Part 29 on the following diagram

Image



HIF tech info here

http://sucarb.co.uk/technical-hif-type- ... ismantling



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