3 replies to this topic

[Dan01]

Hi all

As above, some time ago I bought a HIF44 carb from a chap who was breaking up a turbo engine setup. At the time I didn’t even realise there was a difference between the turbo and NA carbs.

After a lot of forum digging I can see NA carbs converted to be used on turbo applications but not the other way round.

Obvious question - can a turbo carb be used in a NA setup? Or best to sell the carb/exchange with a NA version?

[Ethel]

Just use it*, turbo engines aren't always making boost .

 

*with the usual steps to get fuel metering matched to the engine.

[Dan01]

Sounds good to me, the only thing I picked up was around the pressurised float chamber, would this make any difference?

[Ethel]

No. 

 

It's how it's vented that matters most on boost. Turbo carbs have a port, through the casket, to the plenum (filter housing on NA). There's also an external hose connection that was closed by a solenoid valve on the factory turbo cars. You could leave open.

 

You might have more fun from the part throttle leaning device - that black curvy hose that loops to in front of the dashpot. It can just be blocked off if you do.