[Healeys] SU HD carb - one issue found

goldengt goldengt at cal.net
Sun Sep 10 09:28:56 MDT 2017

I had the same issues with the Midel SUs. See the archives. I went back to my original carbs.Ken Freese 65 BJ8

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-------- Original message --------From: Bob England <engl at accesscomm.ca> Date: 9/10/17  7:27 AM  (GMT-08:00) To: healeys at autox.team.net Subject: [Healeys] SU HD carb - one issue found 
Hello All

Thanks to all who provided me with their thoughts on the problems getting my engine to run properly.  It has been really great to be able to get some thoughtful feedback on my trials and tribulations.

I have found one item with the carbs that I thought I should pass along should anyone else have the issue.  You may recall I could not get the jet to come up to the level of the cab bridge – it seemed to hang up 1.6mm low.  Yesterday I discovered the problem – the lever that has the jet fork on one end and the mixture screw on the other is too thick.  Being too thick it hits the mixture screw lobe piece, not allowing the forks to rise, which holds the jets 1.6mm-1.5mm low.

These carbs are not original carbs and obviously casting for the fork/screw lever too thick.  Going to do some filing on the piece this afternoon (or maybe take a dremel to it if laziness sets in).

Still not confident this will help too much on the rich mixture or 30 degree timing sweet spot, but we shall see – it certainly wont hurt!

Bob England
’65 BJ8

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