Outer Limits 4x4 Board

does anyone know of a TB42E being supercharged. mine is currently in the shop getting done. It will have the most aggressive cam crow cams do for it as well as a rebuilt and ported head, new pistons, rings, mains and bigs, stronger crank cap bolts so it can rev a bit harder and a paxton non intercooled running about 8 or 9 psi. if any one has done this or similar can you let me know what sort of power yours was making. kw and nm. thanks guys.

you can put a turbo on it later when you want to make decent power.

they are predicting a reliable 180 to 200 kw and 450 to 500 nm at the wheels. i don't know about you but that sounds pretty good to me. i was wondering if any one had any useful info not just something negative to say.

sorry, not trying to be negative. its just it seems like your going through alot of time, effort and money for 180kw. a figure of 300kw would be what i was after if i was doing what your doing. i haven't heard of anyone sc a tb42e but i look forward to seeing your results, good luck.

drifter** * wrote:sorry, not trying to be negative. its just it seems like your going through alot of time, effort and money for 180kw. a figure of 300kw would be what i was after if i was doing what your doing. i haven't heard of anyone sc a tb42e but i look forward to seeing your results, good luck.

lol, a tb42e with 300kw is a bomb, and its not going to happen. Even most front runners running the 4.8 built motors, cant use 300kws in the bush, its just to much power....... Only time i have seen the power used efficiently, was outback, where you needed the grunt in the sand, and used the power to kick the back end out and steer it with the throttle.

180-200 in the bush is good usable power, most times, you don't have time to shift to 3rd, over second to use it, so a supercharged tb is going to be very practical, as it can access its power quicker than a turbo.... and i think the above poster is going to have a very quick car that is going to be useful and practical....

cost, maybe he is doing it himself, and its costing him very little...

I don't know many people who race along the local tracks, so how is 300kws going to be practical in ANY! circumstance, other than standing next to it, and going "oh mate, yeah, fully 300 at the wheels".... but when i boost it with the lockers in, it skips sideways, and hunts for trees....

Each to there own at the end of the day......

sorry for cutting across your thread.

A lot about figure depends on the dyno and the operator, I've seen 250kW cars that make 150 kW. I would shy away from the big camshaft. In heavy vehicles the broadest powerband is more suitable, it makes more sense to have a smaller camshaft and use the supercharger to maximize low down and midrange torque.

Joel

Yeah forget the big cam...... unless you are looking to have flames out the exhaust pipe all the time on power.....
Try and keep the exhaust duration and timing near on standard and have the inlet closing timing just retarded enough to push that last bit of pressure in, but dont overdo it.....
Generally standard cams are pretty good with supercharging, and by going radical all you are doing is bringing the curves higher and higher in the rev range.
I spent weeks and weeks once on a dyno only to come back to what was near standard duration and timing once.....
The secret to a good blower motor is free up the exhaust..... it needs to work 100% and tuned length extractors are a must if you are looking for good power.
Top fuel motors are an example of no tuning on the exhaust other than pulse length of the headers..... they use big overlap to scavenge the cylinder as the exhaust does a poor job of it.... but the lack of restriction works in their favour..... it the old between a rock and a hard place thing.
Anything more than a near standard valve timing on the exhaust will only result in lost heat and low end power.
Just keep on the track of good tuned length extractors for the rev range you want to work in.
Make sure you ensure your ignition system in top notch as well.
If you put in 6 to 8psi you will make good power with little problems, but push it to hard and get gready without doing the hard part which is making it strong........ and enjoying it may be short lived...

Have fun........ I still love blowers....they are a heap of fun