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Ordered a set of SU carbs from ZTherapy this morning. If I can run them as long as I ran the originals, they should keep me and the Z on the road until I'm 112. There's a 30 day waiting list for delivery that I hope goes by quickly. My mechanic suggested a Weber conversion kit, but I prefer to stick with SUs. Dennis

Think I finally got it ;0)

Thanks for t he input. Not sure about to which route to take yet. but i guess i will end up with something that is not the perfect performance option but more something rare JDM item even if it's not the most advanced stuff. otherwise i guess Harada would be the one to choose. but we'll see.

Source:http://www.theminiforum.co.uk/forums/topic/256865-dvizard-tuning-bls-a-series-and-twin-carbs/page-2 "The reason for having ‘Fast drop’ piston is to allow the piston to drop during gear changes. If the piston does not drop fast enough during a gear change the needle will not be in the correct position to fuel the engine when the throttle is opened again after the next gear is selected. The result of this is a huge flat spot between gear changes." "?The aim is to spring the carb such that it is fully open as you reach maximum power." "As the SU does not have a accelerator pump jet extra enrichment during acceleration is catered for by slowing the piston rise when the throttle is opened. This retardation in the piston rise causes the amount of ‘Pull’ on the fuel leaving the jet to increase and thus more fuel is drawn off and this enriches the mixture during the acceleration phase. Common misunderstanding is that to gain greater performance you can thin out the oil within the dash pot to allow the piston to rise faster and gain greater acceleration. While true to a point it misses out the fundamental point of fuel economy. In order to gain the best fuel economy and performance, the needle used must be chosen such that at any steady state running point it is fuelling the engine correctly. Enrichment during acceleration is purely catered for by the Damper assembly within the carb. Modifying the damper by thinning the oil for example in this case would mean that the amount of enrichment would be reduced during acceleration and possibly cause a flat spot. Now using this thinner oil coupled with a richer needle would mean that the fuel enrichment balance during acceleration would now be restored and because the piston rise is quicker we will notice an increase in the acceleration when we put our foot down. This is what usually happens when most minis are rolling road tuned. The needle is a little too rich during normal running and about perfect during acceleration. This is great if you don’t mind paying for the extra fuel!!! 10mpg less is common for this way of setting the SU up! "

He has hands like Andre the Giant. The vacuum advance didn't stand a chance.

Hi all, I wanted to let you know that I've added membership ID's to your user profiles. You can now open your profile editor and it's in the header. You can also see it by hovering over a username in a forum post. See example here: Mike

A little secret to installing rear side seals. Don't install them till the rear bearing cap is one inch from bottoming out. Then, install the side seals......push them all the way down till they bottom out, then torque the rear cap down.....it'll really pull the side seals all the way down so there is none sticking up to interfere with the oil pan installation.

I just may have resloved the engine stalling/stuttering issue. I was looking under the hood and saw that the gas line going into the fuel rail was pressed up against the top of the engine. I thought that perhaps when the engine gets to normal operating temperature that the hose was getting hot via contact and causing the gas to become vapor. So, I moved the hose. It was tied down and I slid it through the tie a bit so that it 'floats' about 2" off the engine. I also saw that the cable going from the distributor to the ignition coil was a tad loose on the ignition coil end. So I made sure that was firmly in place. In any case, I have been driving it for about 45 minutes now, in the neighborhood and in city, so a lot of starting, stopping, and moving slow, and it ran like a champ. Next I will run it on the highway and see how it does. I'll look more into the electrical issues later today. Thanks everyone for the help!

https://www.youtube.com/watch?v=sgwM9TU3xcs