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Doe anybody know what jet, spring, and needle are fitted to the SU carbs as fitted to a 'proper' Mini Cooper 1275.
I am fitting a pair to my Imp.
Cheers
Ian
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Seth
South East
MorrisOxford TriumphMirald HillmanMinx BorgwardIsabellaCombi
Posts: 15,517
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Being HS2s, the jet is the normal .090 diameter for that carb size. Needle is an M and the spring is red. That is according to the Haynes SU applications list. The carb spec number is AUD440.
BUT unless you have put a Cooper 1275 engine in the back of the Imp there is nothing to say that that set up will be anything like right for your car. There is a spec for a twin HS2 set up on a 875 Imp (which would have been an aftermarket conversion but it doesn't say who by) which is an H4 needle and Blue spring. That carb spec is AUD140.
Edit: Looking at the charts the H4 needle is richer than the M through the whole range which might be because with the smaller cc engine, air flow through the carbs is likely to be slower.
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Last Edit: Aug 3, 2012 9:00:50 GMT by Seth
Follow your dreams or you might as well be a vegetable. |
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Blimey Seth, you should get out more! ;-)
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Koos
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Fantastic info! Much appreciated ;D
I have a 930 Imp with ported head and sport spec valves.
Will check the carbs out now.
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Last Edit: Aug 3, 2012 17:51:56 GMT by tvrtasmin
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Ahhhhh SU needle charts. Whole evenings can be spent looking at them....
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Aug 12, 2012 12:14:57 GMT
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Anybody have a pair of Blue springs and a pair of H4 needles for the SU HS2 ?
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Aug 16, 2012 12:09:56 GMT
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just by them direct from su spares - burlen
needles wear out and cause running issues, there is a good program called winsu which you can download and use to find the correct needle for your application
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Aug 17, 2012 10:32:08 GMT
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Just bought the springs and needles from Leacy Classics for a fraction of Burlens prices. ;D www.leacyclassics.com/ |
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