At 16:11 -0800 15/12/04, Randall wrote:
>> > Correctly centering the jet is critical.
>
>I agree ! But instead of removing the spring (I assume you mean the spring
>inside the dashpot ?), I remove the mixture nut and push the jet upwards
>beyond it's normal position. By moving it higher on the taper of the needle
>(but not touching the piston, obviously), I'm assured that there is some
>clearance with the jet in it's normal position. This can even be done with
>the carbs still on the engine (since I got in the habit of changing the
>seals that way).
Interesting..
>BTW, I was never happy with the centering job done by the tool included in
>the SU tool kit. Has anyone else gotten this method to work ?
I did once, but as I said it was 30 years ago, so there may be some
memory distortion.
All I know is, once I did the rebuild (which helped me understand how
they worked), I was able to drive the ol' MGA everyday - in rain,
snow, sub-zero (wore my USAF survival parka) and 100+ degrees. It
only needed a few well timed (e.g., spring, summer, fall, & winter)
adjustments of the jets.
John
John A. Wise, Ph.D., CPE
5483 W Potter Dr
Glendale, AZ 85308
(+1)(623)376-9632
Wise@erau.edu
1960 TR3A TS80422L
http://home.earthlink.net/~johnwise/TR3A.html
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