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Mini SU Carbs Modified Vizard Spec Road Race Rally Hillclimb

If you would like a PAIR or a SINGLE SU Modified to DV Spec

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We can do what you have or supply reconditioned or new;

All sizes including;  1 1/4   1 1/2  OR  1 3/4....  All  H  HD  HS  HIF

             H4  SPECIAL TUNING TYPE ( Historic Race and Rally )

              H2  COOPER and COOPER  S  Twin 1 1/4 (Road Race Rally)

              HS4  Twins  Road Race Rally Hillclimb Sprint

              HS6  Twins 1 3/4  for Race / Rally

              WEBERS; 40 & 45 DCOE plus 46 & 48 IDA ....Re-jetting and modifications

Modified all as per David Vizard
Modified for power, not polished to death for looks...
All finished to a very high standard

A recent Mini running a pair of HS6 gained 2.3 seconds per lap...

A 999cc S on a modified HIF 44... 93 bhp 16.45 quarter mile

Genuine SU parts used and can also rebush spindles in the body

MODIFIED  :-
 Butterfly spindles halved and streamlined
Front and trailing edge of piston removed and smoothed off
All sharp edges and casting flaws on barrel / piston area removed and smoothed
Butterflies knife edged down to about 0.030
Spindle shaft screws shortened & threadlocked in
Piston location tab & screw shortened

Uneeded thread holes filled and or smoothed incl servo take off
Manifold opened up to match carb faces
Manifold runners opened up and smoothed especially the top edge inside, facing head
Port entrance opened up to match head

Overall the flow will be up and will rival any DCOE Weber 

Ideal for a fast road car or a competition car
Much much better than standard as the manifold on them is useless.
With these modifications they are the best you can get, will produce very good results in any engine

WILL post anywhere in the world


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  • Manufactured by: Retro Minis




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