kenne bell and Turbo Combo

black50 · Dec 2, 2007

Reading Fast Fords and Mustangs new issue had a 03 corba still equipped with the stock supercharger with a different pulley, running twin 60mm turbos, Titled the mattahan project, set-up was capable of producing 75psi to the intake manifold, LOL not that they did, but the theory behind it was to use the supercharger to spool the 60mm really fast,

Was thinking about a blowzilla 2.2 with a single 66=76mm hellion or hp kit, any thoughts?

mavmavv · Dec 2, 2007

That right there is a tuning nightmare.

85_SS_302_Coupe · Dec 2, 2007

This is actually quite common overseas on typical everyday cars. They build them with roots superchargers so they have good bottom end and then turbo for up top. Renault is known for this as well as a few others. I'm surprised it hasn't caught on over here, especially on diesel trucks where you need torque all throughout the RPM range. At least Ford thought of the "turbo fed turbo" idea on the Super Dutys, where a smaller turbo feeds a larger turbo.

Sure, it can be argued that 75psi can easily be achieved with a single/large turbo, but it takes an eternity for something like that to spool up and your power curve is more like a mountain cliff and just spikes straight up when the turbo spools. With the supercharger/turbo combo, the supercharger helps the engine rev quicker which in turn spools the turbos faster. It's a beautiful system.

91foxbod50 · Dec 2, 2007

This is a topic i'd like to learn more about, a while back i was gonna try something like this, but Its gotta b a lotta coin though

85_SS_302_Coupe · Dec 2, 2007

Well, it really depends. If you were to take a stock Terminator and leave the Eaton bone stock, with the stock pully, then throw on a single turbo and dial it in for a really modest amount of boost, so that total you only had 12psi or so, then you wouldn't end up making any more boost than you would with a KB, but you'd have a completely different running car because of the added boost you'd get when the turbo spooled up. It all just depends on how nasty you're looking to build and how much boost you can afford to make without blowing up the engine.

black50 · Dec 2, 2007

I was surpised to see the price of the blowzilla brand new, now I know there monsters for torque and power @ lower rpms, but maybe I need to find one used, that combined with a turbo kit, $$$$$ unless you built the turbo kit yourself, or pieced it together, I've also read alot of articles about on the nopi circuit, there using nitrous to spool largers turbo's quickly, however, who wants to spray just to spool on the street, although that would be a scary ride. depending on the shot and psi. I like the idea of being somewhat street legal with the supercharger/turbochager combo, not to mention there's probably a hand full of them, kinda unique. How awesome would that be with the torque curve Starting @ 2800 feeding all that top end boost,might want to reconsider a 5 speed

91foxbod50 · Dec 2, 2007

i'd like a nice blowzilla and a turbo, curiously, can a 5.0 handle this upgrade? if you already have heads cam, intake, tb, ignition, fuel, a turbo/sc would b rediculous. I think it'd give u a heart attack b4 u leave 3rd.

mavmavv · Dec 2, 2007

A stock block will crack when you start heading towards 500HP. I spend a lot of time at turbomustangs.com and watch their builds, its very impressive what these motors can dish out with a small turbo and a basically stock motor.

The block is definitely the limiting factor in a setup like that though. Im a GM guy myself, so I dont know much about Ford blocks. I dont discriminate though, I have much love for Fox bodies.

91foxbod50 · Dec 2, 2007

how much can an lt1 block handle

black50 · Dec 3, 2007

I would be doing a rebuild before any power adders got installed, I want to run the mild street class, which is a N/A class next Oct. at ford fever Classic. still haven't made up my mind whether to go longrod kit, or 331 stroker, one the rebuild I was going to install a main gridle, and I don't know what there called there like valley gridles that you install up by the lifters, already have a tko 600 not installed, and still having trouble finding a balls to the walls 26 spline clutch

mavmavv · Dec 3, 2007

http://www.turbomustangs.com/stockblock.php

Info on the stock block strength, as for LT1's I know they can handle a bit more + better flowing heads.

Gearbanger 101 · Dec 3, 2007

You guys need to check this out....http://forums.stangnet.com/showthread.php?t=730007

NIKwoaC · Dec 3, 2007

seems to me like the unintended pressure differential across the supercharger from the turbocharger output would eventually lead to premature supercharger failure. Just like how a pump in a hydraulic system is designed only to see more pressure downstream than upstream. Then again, I doubt many of these turbo/super combos see high mileage. and if production cars in Europe are making it work, then there must be a way to do it reliably.

85_SS_302_Coupe · Dec 3, 2007

NikwoaC said:
seems to me like the unintended pressure differential across the supercharger from the turbocharger output would eventually lead to premature supercharger failure. Just like how a pump in a hydraulic system is designed only to see more pressure downstream than upstream. Then again, I doubt many of these turbo/super combos see high mileage. and if production cars in Europe are making it work, then there must be a way to do it reliably.

I think it just depends on how crazy you get. These cars overseas aren't making more than probably 12psi max if i had to guess, and that's likely to be higher up in the RPMs. You basically have 2 systems to adjust, so you could put the majority of boost on either system...if too much pressure forced into the supercharger was an issue then make 8 out of 12 psi come from the supercharger and have the turbo set up to pick up the extra 4 psi. With the right boost controller you could even tune the turbo boost to come on at mid or high RPM as you needed/wanted it. It works great since a roots supercharger comes on instantly and turbos usually take spooling up to make power...they work like dominoes.

90lxcoupe · Dec 3, 2007

in that magazine they said with the turbos making 6psi the motor made 611rwhp and i think 680 tq, thats pretty insane and the car was bone stock. I cant believe how much abuse those cobra motors can take

black50 · Dec 3, 2007

Premature Supercharger failure, had a question about that, if you were running a kenne bell with a modest 12psi pulley, but you had the wastegate set higher, with more psi coming back into the supercharger, would the supercharger handle the extra boost even with that pulley on there? or as long as you stuck to the maxium boost level you would be okay, also with a set up like this wouldn't you want lower gear ratio, 3.55, 3.25? what about gear set up in the trans itself, seeing how your getting the best of both worlds your pretty much getting Hp/torque through all rpm ranges. I would also imagine the valve train and 5.0 shortblock would have to be built for spinning higher rev limits, you'd hit 6200rpms pretty quick, especially if you had aluminum drivetrain parts, drive shaft, flywheel

black50 · Dec 3, 2007

pretty crazy

90lxcoupe said:
in that magazine they said with the turbos making 6psi the motor made 611rwhp and i think 680 tq, thats pretty insane and the car was bone stock. I cant believe how much abuse those cobra motors can take

if I'm not mistaken those 03-04 corba's come with an aluminum block, and forged shortblock off the show room floor. I've seen them in the 750-800 range, how long they lasted I'm not sure of

Gearbanger 101 · Dec 3, 2007

black50 said:
if I'm not mistaken those 03-04 corba's come with an aluminum block, and forged shortblock off the show room floor. I've seen them in the 750-800 range, how long they lasted I'm not sure of

You are mistaken. The '03-'04 Cobra's are put together using an iron block as their base. Only the earlier DOHC Snakes used an aluminum block.....but you were right about them being forged and able to handle a ton of power.

parchisi · Dec 3, 2007

black50 said:
if I'm not mistaken those 03-04 corba's come with an aluminum block, and forged shortblock off the show room floor. I've seen them in the 750-800 range, how long they lasted I'm not sure of

Iron block, forged manley rods, forged pistons. They're sturdy into the 800 hp range with a good tune.

PUNISHER RACING · Dec 4, 2007

Terminators are sick puppies man!!!!

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