finally got round to having a proper chat with the boy at turbosport about vauxhall stuff
they make (yes make, not buy) all engine hardware....rods, flywheels, clutches, valves, etc etc
so onto the flys - they can do both standard lightening (take a couple of kg off the OE fly, i think hes just done a 3.7kg one from a standard fly) for £45 i think it was
or they make billet flys that are stupid light for £160 these take a 7.25" clutch which they also are making (400bhp & ftlb limit) but thats a little pricey at £290 for the pressure plate and £90 for the friction paddle, but not all 7.25 assemblies can handle that power at all. fair doos tho it will rev like a bike and does not require a lightweight starter since they have actually designed all flys using a vxl starter on their testbed machine with no problems at all.
if we can get 3 or 4 people for the billet fly then they will produce a batch of a dozen or so, more and the price will come down a bit.
all in all he actually knows what hes on about surprisingly lmao and we had a good chat about what setup would suit a road and race car.
maybe in a couple of months, anyone interested give them a ring on 01480 406886 (theres too many possibilities for it to be done over email really)
bet they will do the rods cheaper than arrow etc as well