Hi Mini Community,
I have a 1969 Mini K1100 that currently has extractors, maniflow twinbox exhaust (1.75") and twin SU carbs (1.25 inch) fitted.
It generally runs very well but unfortunately I have had a few problems with the carb setup
1. Seems to be running a bit rich.
2. Ongoing issues with fuel overflow/leakage from float system. I have fitted rebuild kit once already to both carbs that fixed for a while but has come back for some reason.
3. Fuel economy seems much lower than I would expect.
I am currently thinking of reverting to the simpler standard single carb setup. I have searched online etc. but have found conflicting advice & information. Most of the available info seems to be on boosting performance but my main priorities are reliability, low maintenance and economy without affecting everyday driving too much.
My questions are;
1. What would have been the standard carb & needle fitted to Mini K originally (not mentioned in workshop manual).. I suspect from forum messages here was a single 1.25" carb ?
2. I have heard that later HIF carbs are an improvement (mainly because fuel float is at bottom of main carb body) ?. Would a HIF38 or HIF44 from UK with an appropriate needle work perhaps ?
3. I was planning to stick with SU but there's a Weber 32/36 down-draft kit available for Moke & Mini, would that be worth considering for simplicity & other advantages they claim ?
https://www.lynxauto.com.au/mini-850-12 ... rsion.htmlhttps://www.minimania.com/part/P4-004/C ... ir-CleanerWould appreciate any suggestions.
Thanks, Makes