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MG Midget and Sprite Technical - carb jet adjustment

Just putting head back on my 78 1500 and wondered why the back carb was so obviously out of adjustment compared to the front, when I used a gunson carb air balancer on both last time. The tops of the pistons on cyls 3 & 4 were quite black compared to 1 & 2. I know that when adjusting the flats on the jets of the SU carbs you are supposed to start with the 'jet level with the bridge' and wonder if I didn't really know how to recognise that when looking in the intakes. What am I looking for? A picture would be great, but words are good too.

Cheers, J
John Ball

What carbs are you using? I usually remove the dashpots to eyeball the level. When I adjust mine I start by dropping the jets six flats from level then adjust.
C. J. Charvet

Whoops, I also remove the piston as well to check the level. That way you get some light.
C. J. Charvet

A crude picture might help

absolutely NO ACCURACY implied

:-)


Bill

Bingo Bill!
C. J. Charvet

That's good advice, thanks. I felt that simply winding the adjustment nut all the way up the to the top wasn't the way, as the bridges in the two SU's didn't match or look level when I did that.
John Ball

This thread was discussed between 26/04/2008 and 27/04/2008

MG Midget and Sprite Technical index

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