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SU HS-4 Service Kit - Printable Version

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SU HS-4 Service Kit - alfaquad - 09-27-2016

Hi there guys,

I'm looking for a service kit for my Mini 1000's SU HS4 carb. It is completely stuffed - at the moment adjusting it has no effect whatsoever. Big balls of black smoke just bellow out the exhaust.

Or alternatively another decent carb would also be considered?

Thanks!

RE: SU HS-4 Service Kit - DomMINIque - 09-27-2016

Your 1000 shouldn't have an hs4 but rather an hs2.

Maybe that'syour issue. The hs4 would definetly over fuel a 1000cc.  So this is a really bad statement made by me in ignorance. Apologies.

Maybe post a pic of the carb and we can see if it is actually an hs4.

RE: SU HS-4 Service Kit - alfaquad - 09-27-2016

(09-27-2016, 05:53 PM)DomMINIque Wrote: Your 1000 shouldn't have an hs4 but rather an hs2.

Maybe that'syour issue. The hs4 would definetly over fuel a 1000cc.

Maybe post a pic of the carb and we can see if it is actually an hs4.

It always ran 100% fine without smoking at all! The car has been standing for quite some time, and carb has needed an overhaul for years.

Will take a pic quick, but am sure it's an HS4.
[Image: Mini1.jpg]

[Image: Mini2.jpg]

[Image: Mini3.jpg]

RE: SU HS-4 Service Kit - Vinay-RS - 09-28-2016

Probably best to get an SU rebuild kit from the UK or probably from Sports Car Centre.

RE: SU HS-4 Service Kit - Boyscout - 09-28-2016

It looks like the float bowl is overflowing, causing flooding. Buy a new needle & seat kit from Sportscar Centre and all should be fine. BTW a HS4 is a great carb for the 998.

RE: SU HS-4 Service Kit - alfaquad - 09-28-2016

Thanks guys, I'll phone Sportscar Centre and hear what they say.

The HS4 is great on the 998. This car used to bounce off a true-reading 95mph speedo every day when I used to drive it daily Smile

RE: SU HS-4 Service Kit - Miniac - 09-28-2016

The HS4 is an excellent upgrade to the smaller HS2 on a mild to wild 998cc motor, as has been suggested by Boyscout, needle and seat and while you're at it look for play in the spindle