Grape

Hey Guys,

I’m relatively new to the ProCharger concept and was wondering if you could clear up a few questions.

Firstly about the minimum hp requirements. For example on the specification table it lists that the F-2 ProChargers minimum HP is between 425-600. If theoretically my car makes 350 to the wheels, what are the consequences? Is it minor like not making full boost? Or will it lead to something worse like stalling etc.

Secondly, is it possible to run two ProChargers together? If possible and you run 2x F-2 ProChargers will it be able to output 2,900hp? And will the minimum horsepower be doubled to 850-1200?

Thanks in advance,
Aaron

Conway_160

iTrader: (1)

Unless you are getting a custom bracket made the only blower you can run with a Z or G kit is the C2.

Minimum HP is a recommendation, You don't want to put a big *** blower on a dinky engine. The bigger the blower the more parasitic loss it will cause.

Yes you can run two blowers, but it's a whole lot of parasitic drag. Also Max HP is all theoretical.

Grape

Thanks for the reply. That makes more sense, what would be the average percentage of power loss when using a ProCharger? I guess it would be different for each model, the higher the max hp potential, the more hp loss?

Conway_160

iTrader: (1)

I have no idea man, but i would assume the bigger the blower = the more weight you're trying to spin = more parasitic loss.

bealljk

iTrader: (13)

I like Procharger and I ran one for 30k miles / 5 years making between 375hp on 8psi and then 455hp on 14psi. But I would not recommend it for anything more than 400hp.

Only the C2 will work on these cars without ( major major) modification - as conway said.

If you want more than the 400-450hp than the Procharger is not for you. You could run twin chargers but your losses would be horrible - theres a reason it hasnt been done before.

Dont expect anything above 500hp out of the procharger - just not gonna happen. It's not geared right for it.

Furthermore, dont expect anything above 1300hp out of this engine under any circumstance - just not physically possible to shove that much fuel, fast enough, under that much pressure, have it ignite and have it everything around it hold together.

Your best bet and most cost effective solution to achieve 4-digit horsepower numbers will be a massive single turbo setup, running e85, on a extremely-built block. This will cost your around $50k to $75k.

Your even better bet will be to lower your expectations to 500hp to 600hp, with a built block, single or twin turbo setup and will be around $10k-$20k.

Grape

Thanks for your reply, how did you find 450hp? Fast enough for you or would recommend going single turbo for more power?

bealljk

iTrader: (13)

It really depends on the driver, the situation, and the car. 300-350hp is fine on this platform especially if you can lighten the car a bit.

what are your intents with the car? What do you want? Power is nothing without control.

Grape

Never really had a power goal in mind, more so a 0-60 time. I was hoping to drop it into the 3sec range.

bealljk

iTrader: (13)

So I nerded-out a few years back and started plotting 0-60mph times to lbs/btq from new/modern cars under the pretense that 0-60 times are a function (or close to as best as we can decipher) of weight and torque.

I get a handful of daily/weekly updates from the major car magazines so I whenever they reviewed a sports car they usually give a 0-60 time, a break horsepower, break torque, and sometimes a weight...sometimes I would have to google it or use the previous years model.



heres my scatter plot:





Reading the chart … if you want a 0-60 time of 3.0 seconds you need a 6:1 ratio of lbs to torque(ft*lbs). Working the math backwards - if your setup weighs 3400lbs, you need 567 ft*lbs of torque.

567 ft*lbs of torque on the 3.5VQ is going to be in the 600hp to 650hp range. To achieve 650hp (also graphed in a separate post) you'll need 20 to 22 psi of boost.

long story short - you need 22psi of boost

Grape

Champion! Cheers for all the info