Joe Curto - S.U. HIF Float Bowls

Joe Curto discusses some vital information about SUHIF Type Carbs. While these don't have as many variations as the other carbs, some helpful information is mentioned: floats, float needle and seats, jets, throttle, and Harley Davidson application. (Rolls Royce, MGB, Mini, Bentley, Austin, Morris, Landrover)

[@cyrielgaemers]

Joe, insanely good informative video's, thank you, hero!

[@fredyellowsnow7492]

Thanks, Joe. You've just confirmed my suspicion that I need a larger 0.96" needle valve for my application.

[@David-wy9jl]

Thanks Joe, that was great. Maybe someday you can make a short video clip about the temperature compensator and all it's doings, short comings and alternatives (if any). David

[@cyrussataravalla6731]

Ma786sai Dua Joe what an absolutely beautiful most absorbing video. I have a 1982 Mark 1 Rolls-Royce Spirit. I think mine has a SU HIF7. She wafts in peerless timeless regal elegance. She starts up INSTANTLY. Yes my SU carbs like you say have the auto-choke. My question to you is my Rolls runs very rich. Because every few months the plugs get very black. And I have to keep opening them to clean them. How May I get the mixture WEAKENED? I believe turning the screw ANTICLOCK WISE on the SU’s will weaken. Do I need to remove Both SU hif7 to do this? God bless you. Cyrus

[@briantilley4825]

thanks for the detailed info. I have a RIVERA SU on my Harley, I have a bowl extension on it, it has got a deep grove on one side of the bowl spacer & a shallow grove on the other side, which way does it go ,

[@briansteffmagnussen9078]

It might seem strange that RR had problems with the same carburetor that worked fine on the MGB. But i think it comes down to basic physics. if the heat or cold source to the carburetor was different on the two or the vibrations it would have affected the malfunction in a positive way. And then you dont have to knock the carburetor with a wrench that in many cases are the solution to a problem.

[@fcofuerte]

Hi Joe! its any way to modify a Hif7 to could be used like a hiff44, with a cold start mechanism in the same carb?

[@robfrye4664]

The HIF44 is a metric carburetor with 44mm bore, or 1.73" and not 1.75"

[@poser77]

i have a 1964 volvo amazon what needles do i need its a 1800 engine B18 and it has twin hiff44 fitted

[@joseluislorenzo6278]

Hay posibilidad de traducción a español?

[@paulwalters8726]

THE JET NEEDLE. WHAT IF IT DOES NOT REMOVE AFTER THE RETRAINING SCREW IS REMOVED? HIF CARB

[@Paintppa1]

I used a small socket that fit within the hole attached to an extension and gently tapped it out.