Has anyone looked into adding an Eaton E45 supercharger (off a BMW mini) to a type4 engine? Just bench racing at the moment. 2 litre bottom end with 1800 heads and a high torque cam, megasquirt FI and an Eaton E45 supercharger. Looking at everything else superchargers have been fitted to from vw polo to 5litre+ V8s and i've never seen one fitted to a type4 engine. Why?
There's a guy called Moog over on VZi.... well there was, I've not seen him online for a while!! He was running a roof chopped bug with a type 4 and eaton combo.. if i remember correctly he was having issues with drive belts snapping... sounded proper awesome on the 1/4mile!! Turbo is going to be the easier installation tho
Moog is running a 911 upright fan on his isn't he with the Eaton mounted next to it? Easy route? Pah! If I wanted easy I'd have bought a T4. I've seen a Porsche 912 with a type 4 engine running an air con compressor and the air injection pump (US anti-smog thing) off the fan hub and wondered if a supercharger pulley could be adapted to run off it instead if it was beefed up a bit. The intake manifold design doesn't look too hard to sort out if you use the FI intake runners and make a new plenum for the charger to sit on. The Eaton seems to have its outlet at the bottom and the intake out the back then a 180 degree pipe to face it forward. Throttle body could mount to that pretty easily.
This is a pretty neat motor for a buggy. Looks like he's widened the fan housing so the charger pulley runs behind the fan.
have you got the "turbomania" book? some good aircooled general forced induction stuff in there and "maximum boost" is a must before you start any conversion. still think the turbo route would be much better, a vnt turbo off a modern diesel with mechanically opperated vanes would give you massive bottom end torque (as much as a supercharger) but less mechanical drag giving better fuel economy and a free'er reving engine with better top end power and you wouldnt need boost diverter valves for high speed low throttle etc. if i was building a forced induction motor it would be on throttle bodies with efi on a standalone type ecu (fuel and timing contol is especially important with a aircooled motor)with the vnt turbo and chargecooled, giving smooth running, reliability, best power and fuel ecconomy at all times. just look at what new forced induction cars are doing and copy it no point reinventing the wheel
I've not got the turbomania book. Its a bit out of date now though isn't it? The forced induction section on the shoptalk forums is pretty useful though. True, the turbo route is easier but i love the whine of the supercharger. Would love a buggy with one fitted but i suppose it could get a bit irritating in a bus driving for hours on end. The eaton M45 off a BMW mini makes around a maximum 6psi of boost which isn't much. I made a 2L turbo'd FI engine for a mate quite a few years ago using Saab 9000 T3 turbo and K-jet FI which made 160bhp@5000RPM using just 1800 heads and a mild cam but that was before megasquirt and all the new stuff came out. The idea of using a vnt of a turbo diesel sounds like a good idea. Anything that can give massive low down torque is a winner for me. The stock 1600 is a little gutless (massive understatement) in a fully loaded westy. I've driven over the snake pass from Glossop into Derbyshire at less than 30mph flat out and Sutton Bank near Thirsk is another nightmare climb in a camper.
This turbo'd bus engine looks pretty cool. Suppose you could use one of these headers to mount a turbo on if you fabbed up a mounting for it.
