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MG MGA - Float level setting


Can anyone tell me what the float level setting is for the HS4? I have the instructions off Barney's site but they are from the SU tool kit, which is "all inclusive" and I don't have the SU manual. Factory manual is no help--tuning info only.

Thanks!
JM Morris

JM

Attached image is from my Haynes MGB manual. It shows the measurement 'A' as 1/8" (3.18mm)

Steve

Steve Gyles

Thanks, Steve. Now another question. I have the brass floats and Grose jets. Would it still be the same? I'm thinking so, but want to be sure.

Thank you so much!

--Jack
JM Morris

Sorry Jack, no idea. I have standard MGA carbs not the HS4. I only have the MGB manual for general data on the 1800 block, head and innards.

Steve
Steve Gyles

Steve--in reply to your other question (on the piston damper thread). I goofed! I have the standard H4(?) carbs for the MGA. (I also have a midget with an HIF carb on it, have owned MGBs, and I'm starting to get my SUs mixed up!)

So I guess that changes the above info? (Maybe I need another cup of coffee :)

--Jack

JM Morris

Float level is a fixed characteristic of the carb setup, how you get it does not matter.

FRM
Fletcher R Millmore


I think the float level is 7/16

Gobby
Gobby


Thanks Gobby! Yes, 7/16 is correct. (I found a Haynes manual to corroborate).

Thanks to all.

--Jack
JM Morris

Jack

You can have your coffee, I prefer a glass of wine - 3rd in fact, evening here! I can never remember the SU numbering system either. It was only your question that got me looking at the books. MGA is listed as H6. They also work on the MGB 1800 engine quite well as I can testify.

Steve
Steve Gyles

Steve -
Either more wine or less...
MGA are H4 except TC, which are H6.
MGB are HS4
"H" is the exposed movable forked jet, HS is the tube from float bowl to jet type.
"4" or "6" is the size of the throttle plate over 1", in eighths".

FRM
Fletcher R Millmore

FRM

Absolutely right. Totally misread my Haynes Manual. Read the Twin Cam data without looking at the title. I must really have confused Jack et al.....Sorry.

I'll creep back into my hole. House moving getting the better of me.

Steve
Steve Gyles

This thread was discussed on 23/04/2010

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