Folks,
As part of the on-going development of our MK1 PI & GT6 racers, the cyl
heads are next on the list for serious attention.
The 2.5 head has already had a lot of attention, but it is the HP limiting
part, so it needs more work if we are to extract more power (currently
200BHP at rear wheels). The GT6 head has 2500 sized valves and slight
port/chamber mods, but is far from radical. A more radical head is 90%
complete for this car, and is yet to be tested.
I am aware of a "recent" (12-24 months ago) article by Witor in Six Appeal,
which showed some flow values for various heads. I recall working out that
at least 1 of the presented graphs must have been quite wrong, and assume at
the time it was a printers or labelling error. I sent Chris Witor a fax at
the time, but never go a reply, so if you are reading this Chris, can you
please enlighten me.
I have a "friendly" operator of a flow bench ready to let a few triumph
racers test a selection of 6 cyl heads and mods at no charge. If anyone can
provide any factual data on 6 cly head flows I'd be grateful. A scanned copy
of said 6 appeal article and any follow-up would help.
Anybody want a pic of our racer can e-mail off-line
Terry O'Beirne
Australia
|