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end of long drive symptoms

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For the record, the manufacturers always set the needles so that the shoulder was flush with the face of the dashpot and the main jets so that that they were 35-38 thou down from the jet bridge. If you set SUs this way, yours will be correct, given that the float needle leavers are 7/16" at their highest point from the face of the lid when it's upside down.

Ash
 
EV2239 said:
For the record, the manufacturers always set the needles so that the shoulder was flush with the face of the dashpot and the main jets so that that they were 35-38 thou down from the jet bridge. If you set SUs this way, yours will be correct, given that the float needle leavers are 7/16" at their highest point from the face of the lid when it's upside down.

Ash
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One other data point: all the replacement and kit needles I've seen have a transverse groove instead of a shoulder. These should be set so the bottom of the groove is even with the bottom of the vacuum piston. I once set a pair to the top of the groove, and the car ran OK after tuning, but when I found out the correct mounting I changed them and the car ran poorly (too rich), so I had to adjust the mixture. The grooves are very small, probably less than a millimeter in width.
 
Hi Dave
I too was suffering a bad back after not too many miles in the Healey so before my long France Spain trip I replaced the seat cushion only with one from AH spares. Result no bad back even after the 2000 odd miles. The only drawback, the increase in height in the new cushion meant the top of the windscreen was more in my eyeline. I by the wy have a more than 60 year old body. Can't suggest a cure to the accelerator foot problem, maybe someone else can.

Looks like a great drive nonetheless.

Ian
 
Try the webbed computer chair back rests. They are curved to contour the back and the webbing allows air to circulate. the cost about 5 bucks each. I know about a dozen people who use them happily. They have a strap that easily goes around the back part of the seat.
 
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