I am considering commissioning a limited, one-time run of very fine
velocity stacks. They would fit a TR4 with long manifold and HS6 (short)
carburetors. With the present design, they probably would not fit a TR3.
You can see a picture on Tony's website,
http://www.tonydrews.com/Jack_Parts.htm
and look at uncle jack's parts
There were just a few sets of these made in the early 90's and sold through
British Frame and Engine. The person who made them cannot be located. The
original ones were rather fragile,and the two remaining sets that I know of
are on George Wright's car and the former Chip Bond car. Users reported a
measurable performance increase. The new ones will be more robust and not
as prone to breakage.
As you can imagine, a limited run of this kind of part will not be cheap. I
must price them between $170 and $200 a pair, depending on the interest.
I must decide whether or not to go ahead with this project, and if so, how
many to make. If you think you would be interested in purchasing a set,
please drop me an email.
Thanks............
uncle jack
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