2 replies to this topic

[Ollie1953]

At the end of June 2020 I bought a 1989 Mini Rose as a project. It was fitted with a 1380cc motor, 286 mega-dyne cam, stage 3 head and was fitted with twin HIF4 carbs. I want to get rid of the twin carbs and replace them with a ?

My initial thoughts were a HIF44, but what needle to start with?

If there are any other suggestions please feel free to state your case, with reasons why.

Thanks in anticipation.

[T.Harper]

You're right that HIF44 would be most suitable.  Your Twin HS2s would most likely provide a touch more low down torque if set up properly (i.e. tuned, balanced, and not leaking air through the throttle shaft).

 

On needle selection, wisest to go to a rolling road/specialised tuner - perhaps using one of the needles on this page to nurse the car over there:

 

https://www.calverst...edle-selection/

 

[timmy850]

If they are twin HIF4 then they are 1.5” and equivalent to an HS4

Any reason you’d take them off? Is the engine currently tuned and running well?