Two Carb Questions, hopefully not the standard ones.
Turbo Mini Forums

I went to visit my folks over the weekend and not only had my carb rebuild kit arrived (thanks Iain) but my Mum was away which meant I could rebuild the carb in the warmth of the kitchen rather than the workshop which is rather cold this time of year, anyway I digress.

I've rebuild SUs before but only HS carbs not HIFFs and I'm having trouble in getting my head round the choke on the HIFF. On the HS the choke opens the throttle slightly and lowers the carb jet to in order to enrich the mixture, however the choke on the HIFF appears only open the throttle and not enrich the mixture, is this right or have I missed something?

Secondly what does this screw do:



There's a replacement one in the rebuild kit but I can seem to get the old one out, all it does is spin round which is a bit worrying.

My turbo carb don't have a screw there just a plug.

The choke opens a fuel bypass inside the carb to richen the mixture

Metro turbo weekend driver,Mini turbo in the making again!

is it not a breather pipe connection that someones plugged up.

Pictures here >>> Photobucket

Build diary, No turbo... yet...,here on TMF >>> TMF - My project

The bi-metallic strip in the float bowl acts a bit like a choke too i think, lowering the jet when cold or is that bs?

Just checked 2 turbo carbs, both have this hole plugged:

Edited by joeybaby83 on 3rd Dec, 2006.

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