The gearing is good for 164mph on the current redline. To be honest if you don't hit it at Goodwood you are not likely to anywhere in the UK
(Snetterton or maybe Thruxton I suppose).
The gearbox and axle survive because it is a Rotrex charger and is very soft on transmissions.
As for taking on Duncan.....he is in a different league again !
quote:Originally posted by jeffw
The gearing is good for 164mph on the current redline. To be honest if you don't hit it at Goodwood you are not likely to anywhere in the UK
(Snetterton or maybe Thruxton I suppose).
The gearbox and axle survive because it is a Rotrex charger and is very soft on transmissions.
As for taking on Duncan.....he is in a different league again !
what a difference a day makes! we had similar conditions (although not quite as bad) at 3 sisters the other week and 2 of the westfield BEC sprinters
were absolutely flying in the wet! I was not
Yeah....it was meant to be fine in the morning and then raining pm....then they changed the forecast and in the end it rained pretty much all day.
The Westfield guy with Traction Control left the rest of us for dead...
Back to TTS yesterday. They (Darran) spent all afternoon (till 8pm!) designing and fabricating a Alloy Rad for the car. They buy the core in from
their supplier but everthing else is custom. So I now have a a very nice, rubber mounted, alloy rad which should help with the water temps as the
summer progresses.
Just picking up on this old thread which i've been reading and a few other that jeffw had done regarding fitting the rotrex supercharger. If
like me people google info on supercharging with a rotrex these threads pop up so it might be useful.
Finally got round to fitting a 30-94 to my kitten, and like the zetec it's was in theory far from ideal for boosting as i haven't done
anything to it from running quite a good spec NA cosworth (250bhp ish). With accrallite pistons just shy of 12-1 compression, pair of Kent L1 cams
which are 306deg with plenty of overlap, big valve ported head etc...all wrong in theory for any boost!.
The main difference is i made up a water charge cooler as space is tight in the kitten!, Bell Intercooler core built inside the plenum, rad in the
front, with it's own fan controlled off the ecu from the air temp and it keeps it within 20 deg of ambient on the logs. I went for a calculated
pulley ratio for a conservative 6psi boost just to start with, but it actually makes just over 7psi. I've done the mappng (wide band, data logs
and det cans) and it all works amazingly well, the performance difference is immense!. Obviously not any dyno numbers, but the inner bank of injectors
hit 100% duty cycle long before the rev limit/full boost and they're 540cc/min so it doesn't take a rocket scientist to have a good guess.
I used tb's with 8 injectors so with both sets there's enough fuel. I'm very very very impressed with the superchargers as i'm
sure that a turbo set up on the engine set-up as it is would have been a none starter.
