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Oh its on :D Remapped Super-Hicas controller to get it up and running before moving the whole car onto an SQ6M. Just need to design some rear uprights now. Going to aim for a bolt on to a standard rear beam although I may need to shortern the standard rear beam to fit it all in. Upright...

Not bad at all. We were there as general support for the VdeV/Speed buys running Pi/Pectel kit so no favourites. Pi/Pectel teams were 1st, 2nd and 3rd though ;-) Glad your Dad got on well. That red Audi powered Exige is pretty nippy isn't it..... soon to be on an SQ6 :-) Cheers M

I was there on the VdeV/Speed stuff. Spent a good few hours on Friday night sorting out a dodgy speed sensor on the IF Motorsport car - fabrication in the back of the truck always good! Did see your screen make a bid for freedom at one point! Cheers M

Tis true! We did lots of testing and eventualy ran the 08 Britcar 24hr on Standard X85 Brembo calipers, Brembo discs and PF05 pads. We did two sets of pads in total and placed 1st in Class and 16th overall out of 52 starters. Realisticaly the standard brakes are fine with some aggressive...

Just use the standard drain and refil points with appropriate screw in fittings. Much easier and allows it to be a bolt on setup then. I've done this on Ford/Getrag 6 speeds and Sadev ST75's with good results. Cheers M

It's not an F1 box!! It's just splash lubricated so no oil pressure at all. Cheers M

You need to actualy cool the oil, simply blowing a bit of ambient air over the box casings won't make a great deal/any difference. The box casing isn't cast with any form of heat sinks or similar so loosing heat into an ambient temperature air stream will be very difficult. The only effective...

Gearboxman aka CTS, competition transmission services. Good chaps I've used them in the past with no problems and good results. Cheers M

Diff failure tends to be when you unload and reload the diff rapidly i.e. during wheelspin. If you manage to spin up a very grippy tyre then the load through the box when it grips again is what causes the damage. The usual failure mode of JC5's is crunchy gear selection. I tend to think that...

How long have you put 230ftlbs through the box for though? And I mean in terms of constant loading. I'm guessing you've not done 12 hours at constant point of peak torque. A constant load limit is just that. Usualy on none cooled FWD transaxles the failure mode is gearbox oil temperature...

We run similar stuff (as part of the essentialy pure water coolant) in LMP and similar endurance cars for obvious reasons.................... however worth noting they only need to last 24 hours ;-) It does work but it isn't the best stuff to have swimming around in the cooling system of a road...

I think you'd be okay with a standard good condition box to be honest. If anything you're likely to have a diff failure if you really batter it with sticky tyres on/ Obviously the wear rates will be much higher with the greater torque loading but I'd still expect 25K or so from a fresh box...

Generaly speaking a healthy F4R 736/738 will make around 190bhp on 428's with some form of standard inlet manifold on there. Cheers M

Not if its built and calibrated properly!! Cheers M

Well theres no reason why you couldn't have 177ftlbs from 2000RPM to the rev limiter. Assuming thats at 7K it'd give you a peak power output of around 230bhp i.e. standard R26 power. Cheers M

177 ftlbs sticks in my head for some reason, I'll have a look and see what I can find. I'd be tempted to drill the block and use a JC5 for packaging and weight reasons with a suitable cal in the engine control to ensure good power but a reasonable level of torque. Cheers M

Yes there are a few places that'll do it now, including Reproprop. It's a fairly simple job to be honest. No reason you can't reduce the torque output of a 225 spec lump without reducing power though. Cheers M

It pretty much is the headline figure...... hence why 99% of gearbox manufacturers specify a max constant torque figure and for the most part no one specifies a transient figure. Okay you can get into situations with open diffs and wheel spin that can cause much higher loadings but for the most...

In testing now. Cheers M

Power means nothing as far as the gearbox, clutch, driveshafts etc. are concerned. Torque is what actualy limits (breaks) them. You could quite happily put 1000bhp through a JC5 as long as it was accompanied by less than 200ftlbs or so (although realisticaly input shaft RPM would come into play...

Depends on how the aftermarket ECU is installed. Cheers M

John, does your DBW motor have a pair of 0-5V TPS's on it? Cheers M

That comment regarding "who else" was mostly tongue in cheek ;-) Cheers M

Of course its Pi, who else is going to come up with stuff like that ;-) Works repeatably and accuaretly these days and is in active use at the moment. What material were the shafts made of you were using? I can confirm from personal experience it works very accuately on a pair of 65K mile old...

Yep, have a very accurate solution involving on shaft strain gauge, transmitter and on car reciever. It's so accurate that you can apply a torque, by hand, to the shaft and record a reading. It was run in F1 for a number of years with good results and is currently in use on a couple of sports...

OEM cal is fun isn't it "... and how much engineering time will that be?" usualy followed by "no". To be fair for most motorsport DBW applications I'll use PPS/RPM with some scaling in it for fuel consumption etc. (i.e. lean map isn't actualy lean as per old school but reduced throttle opening...

Torque based cal. Throttle position as a result of requested torque value with PPS as requested load value and MAP/TPS (in that order) as actual load value. Sirius strat for torque based engine control (which obviously includes DBW control) is very advanced and yes more than one person has the...

Why does it look like its driven via CAN? It's just boggo VDO DBW body driven via H-Bridge with a pair of PPS and a pair of TPS for fail safe. Cheers M

AT Power have a DBW solution for their ITB's which means you can do all sorts of nice torque reduction and inducted air mass control that's simply not possible with a cable butterly. Cheers M

[Basil Faulty] Don't mention the XJR tensioners[/Basil Faulty] ;-) Cheers M