> None, but I also read that pierce manifold has started doing the same
> thing. In the latest grassroots magazine there is a small write up on
> page 149 of the aprl 2001 edition. These are the same guys who do a
> weber carb intake manifold, and if I am not mistaken the non-crossover
> AL heads with the PM1 in the casting. There website is:
> http://www.piercemanifolds.com
A word about the five speeds...
Toyota based ones are all from one source, Conversion Components in New
Zealand and they have now set up a dealer network in the USA. The Datsun
based ones are from Novus (I think in Cali.?). There are two Ford based
conversions and both are from the UK. Most of the people selling them in
the USA are just resellers, and or producing the castings under license.
There is a right up on one of the larger Spridget (Chris Nevard's?) sites
with a comparison between the three types of kits (albeit for Spridgets).
(BTW, Mike Pierce does the X-flow heads and X-flow cams as well... other
people were involved though).
I think I should share info on a relatively new alternative to the 5 speed
route, which I think is better, more practical, and more original (with
higher resaleability!). It is relatively expensive, but if you already have
an overdrive it isn't anymore expensive than a rebuild. This solution
provides with potentially EIGHT forward gear ratios.
It is available from Medina Motorsports, 1-800-700-7057 or racing@ohio.net
They take your overdrive unit (A type, J type, whatever) and rebuild it to P
type spec which is essentially an industrial variant of our overdrives. The
major difference is that the clutch material is completely new and not the
same as used in our overdrives, and that is what really gives this P type
overdrive it's strength (along with other uprated components they put in).
Hydraulic pressure is also increased to 750lbs through larger pistons, and
they put a heavier duty solenoid in. Cost is $1200, for the fully rebuilt
and converted overdrive unit... that price is if you supply the OD unit to
them. With this conversion, the OD can take "anything up to 1200hp"...
again, just the OD unit (not your entire gearbox).
This is the route I will going with my TR6 now that I have learned about it.
I can vouch for everything that has been John will tell you about it.
Fellow TR6 racer had it done, OD engagement (from the higher hydraulic
pressure) is so quick he says it is like actually having another gear! Said
TR6 is also pushing quite a bit of power (although he's got an inflated of
idea of how much it really is).
Kai
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