:cornut: (to me) It appears to be a turbo charger connected to the exhaust pipe of a MINI. I thought that this far from the exhaust manifold that the turbo would be useless and just cause excessive back pressure and none to speak of intake pressure. But then I'm not a trained performance gear head. I could also be totally wrong. Jason
I'll ask the questions not being asked... Why a rear mount for the turbo, won't the pressure losses be large in moving air to the front of the car? What about turbo lag. With BMW and the like moving to multiple small turbos as close as possible to the exhaust ports to minimize lag and increase efficiency won't a turbo way back at the end of a MINI have a lot of lag?
They make rear mount turbo systems for corvettes and other cars and all your concerns are there but if this is a twin charge system, the SC should take care of any lag, whilst the turbo builds pressure for the top end... 2 cents Look forward to seeing how this works out!!
Same question I had Nate, but if it is a T/C system you are are going to have boost limitations due to the S/C bottleneck, so to speak, so taking that into consideration with the right turbo you sould be able to compensate for the loss and possibly all that travel will actually cool the air even that much more? Hell I don't know, I'm basiclly just spit-ballin' here. :lol:
If doing a Twin Charge, mounting it in the rear would also get it away from the heat and tight confines of the engine compartment..... Just spit balling here too....
Yeah but.... When you said this.... "But then I'm not a trained performance gear head. I could also be totally wrong"..... it cancelled everything out.....
It is indeed a rear mounted turbo. For those who are going to the dragon, It'll be there Friday and Saturday. The basic setup is a slightly larger-than-stock supercharger pulley (not smaller, like most people have), Tied to a race header and custom exhaust which spins the turbine in the rear. From the compressor side of the turbo, there is a charge pipe that sisters to the exhaust moving the compressed charged forward to the intake. By putting the turbo in the rear, we can package a much larger scroll, and separate the heat that it produces from the engine bay. The relatively long charge pipe would normally contribute to turbo lag, but that's what the supercharger is for. We're still playing with pulley sizes to reduce lag. Needless to say, the car scoots.
So it is kind of based on the jet engine principle, where the exhaust gas turns the turbine which turns the compressor, but minus the after burner? Jim
Well yes, and a turbo can somewhat easily be converted into a cobbled-together jet, much like this vid: [ame]http://www.youtube.com/watch?v=BZoymnZRBVc[/ame] BTW, I love how this guy has it going in his garage (indoors) and it's just pissing some sort of liquid all over the place. Hopefully it's coolant and not jet fuel.
Now that would be cool. Come through the corner with the super charger, then go to full military power, hitting the AB on the straight away. Jim
The tags at the bottom of this thread should say coool verrrrry instead! Can't wait to see & hear what this sounds like.
Well, we just fitted a 'One Ball' of sorts. Welded in a stock silencer 'cause that car was just too damn loud for a 725 mile road trip to the dragon. If all goes well, we'll toss her on the dyno today. BTW, the little bit of back pressure that we presumably got from the muffler has improved torque. Car will be at the Dragon Friday and Saturday.
