F1R ProCharger questions

BlownOne said:

You’re going to need a return fuel system, injectors, use e85, run the largest pulley (lowest boost) possible and you’ll still make 1000whp+ depending on shift point. Also you could lower the shift point to make less boost since it’s rpm dependent. FWIW I’m on a 5” blower pulley, shift @ 7800rpm and see 17psi...this is basically as “turned down” as it gets and I still went almost 150mph in 1320’ lol.

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BlownOne said:

You’re going to need a return fuel system, injectors, use e85, run the largest pulley (lowest boost) possible and you’ll still make 1000whp+ depending on shift point. Also you could lower the shift point to make less boost since it’s rpm dependent. FWIW I’m on a 5” blower pulley, shift @ 7800rpm and see 17psi...this is basically as “turned down” as it gets and I still went almost 150mph in 1320’ lol.

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2qwk4ya said:

And you have the baby F1A blower. with the 5" pulley spinning 67,392 rpm @ 7800 which is 90% of your 74k max. recommended blower speed.

The F1R has a max speed of 68,000. and with a 5" pulley it would be 67,392@ 7800rpm 99% of max. and its rated for another 150hp more than the F1A.

I don't think you can run any bigger than a 5" pulley on the stock hood with liner. and I bet that blower would see 25+ lbs. @7500

It also has the larger 9 3/4" volute over the 9" IDK if you could even install a airfilter for the street.

There's no way that F1R should be on a stock bottom end street car. you will never be able to control boost unless you wastegate it. And the stg II intercooler is already struggling with the smaller F1A without a wastegate.






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gearhead2685 said:

No such thing as a centri too big, only block rods and pistons that are to weak .....and maybe crank snout...:lol:

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