FS)Bp Supercharger setup

[silverton]

OMFG 600 dollars? I just lost my job or else I would buy it RIGHT now.. damnit, this sucks.

[MATT91GT]

i am very interested. but i have a specific question. do you know what car the supercharger is from? several vehicles used the m62.

[turbo239]

Pontiac bonnivile

[CODY004WD]

You have a PM.

[MyHooker]

You know, I suggested this exact idea on feoa and people told me I was out of my fn mind. Although I was looking using the jackson racing drive system that offset the alternator back 1 inch and used a dual pulley on the alternator and drove the supercharger with that, like on their honda units. Also I was looking at putting a bov attached to the intake manifold to avoid overpressure. Man, I am glad someone did this. Of course my main motivation was for a possible twin charging situation, given the fact that there was still all that room in front of the engine left.

[CODY004WD]

What would the point of a BOV on the intake manifold be? I am assuming by your wording that the BOV would be in between the throttle body and the intake valves?... Pointless because the capacity of the intake manifold is, I'm assuming here, most likely less than one full revolutions worth of air. Meaning that the intake manifold would go from boost to vacuum in like 6 thousandths of a second at redline. Thats .006, if you can shift faster than that, I don't think you would ever even need a BOV. It's also the intake manifold's vacuum, combined with the boost in the charge pipes(before the throttle body), that opens a BOV. Meaning it would never even open because at the point where it had enough vacuum to open, it would have an equal amount of vacuum, plus a spring holding it closed. The boost between the throttle body and the valves naturally diminishes very quickly and will not hurt anything.
The only thing I can see you using this as, is what would kinda be considered a "pop-off type valve" That, basically is when boost levels exceed the mechanical force of a spring behind a valve, the valve would open and bleed excess boost, at which point why not lower your boost.
I understand that you could theoretically obtain a broader power-band by twin charging and building great amounts of boost at a low RPM, then leveling the boost with a bleed-off system, but you still have mechanical variables such as grip and transmission weakness to deal with. I just dont think that an escort is a practical car to twin-charge, overboost, and level with a pop-off valve, because of the other inherent limitations.


Sorry for the rant, and I wasn't trying to attack you, it's just impractical.

On another note, people do, on occasion, rise to the occasion to prove that the impossible can be done, and if you would like to prove the nay-sayers wrong, I would be the first to congratulate you! I personally don't have the money to go balls out on an escort or protege the way I would like to, but If I did, I think it would be more than possible to build a killer car, with only the use of one power-adder.

[turbo239]

Sold

[MyHooker]

Well, thanks for your imput, I am glad that in between this exchanging of ideas that turbo239 was able to sell his wares. Yes, you would be correct, it would be a pop-off valve just to keep things sane. The twin charging is a pipe dream, and I would have to manufacture a bypass valve system, but it has been done to an 1800 cc motor with favorable results. The tranny is the weak link, and maybe keeping a stock pile of them around wouldn't be such a bad idea.

[CODY004WD]

Well, thanks for your imput, I am glad that in between this exchanging of ideas that turbo239 was able to sell his wares...

Yeah, I bought it.
I know what a system like that would be capable of, and in a perfect world it would be amazing to have a car with that much capability. Unfortunately this isn't a perfect world and the money spent re-engineering these cars basically from the ground up, as you run into the next weakness, is just impractical. I spend most of my freetime daydreaming of new ideas, then I spend a week talking myself out of trying it because of the mess it would create. I've gotten pretty good at it! There are only a few people here I can think of who have taken it to the next level. Im not one of them... maybe some day.

Turbo239- thanks and I'll hit you with feedback when I get it in!

[MyHooker]

Yes, very few of us have the resources that Lancia did to build the Delta s4 and even they had to scrap the project because the car was "difficult to handle". Of course, producing over 700hp in a car that small, I could see the problem. Wasn't quite shooting for that number, but we can dream. Good luck with the Super and keep us all posted, lest we be looking for the mushroom cloud on the horizon. he he

[KAinjection]

and I would have to manufacture a bypass valve system

Actually you could use a factory one, I just remembered this. A Z31 300ZX Turbo has a pop-off valve screwed into the upper intake manifold, if for some reason the turbo overboosts. The stock turbo (super T3 I think) only ran about 7-8lbs and the pop-valve was not much more i dont think.

[MyHooker]

Is this the classifieds or the forced induction forum?lol Actually it was the bypass valve that I was looking at making that would route boost from the turbo "Around" the supercharger when the turbo was boosting higher than what the SC could deal with.

[CODY004WD]

Got it! Everything looks good, I will hit you with a few questions later in the week, just to make sure I have it all figured out.

Thanks!