Converting from D1 to F1
Converting from D1 to F1 I currently own a D1SC and am considering upgrading to an F1. What all would be involved in the conversion? Anyone have pics of the F1 installed on an F-Bod LS1? If I am not mistaken the D1 runs out of steam around 750rwhp and am just curious what it will take to push the envelope a little higher.
I have considered doing it but there isnt really a big difference between the two except for the step up ratio and the ability to run a larger diameter pulley. An F1 wil bolt right on but its sticks out a little further I believe (1/4" or so) and you will need some new pulleys. It depends what you mean by a 'little' more power..
F1R is what you need if you want to make a big difference
P1SC = 1200cfm
D1SC = 1400cfm
F1 = 1525cfm
F1R = 2000cfm
F1R is what you need if you want to make a big difference
P1SC = 1200cfm
D1SC = 1400cfm
F1 = 1525cfm
F1R = 2000cfm
So the larger pulley I assume would help eliminate belt slippage while still running the same boost levels as the D1?
According to the ATI site the F1 would be good for another 100hp roughly, and have the flexiblility to run another 8k in max impeller speed.
Thanks for the info Kp.
According to the ATI site the F1 would be good for another 100hp roughly, and have the flexiblility to run another 8k in max impeller speed.
Thanks for the info Kp.
Originally Posted by BlkHwk
The F1R would have to be a completely custom install wouldn't it?
Not sure on the measurements, but it is bigger.. But also it can be done!
Clint
I believe the F1R bolts on to the same bracket but its quite a bit larger overall. You would have to move the radiatior forward and what not. Andereck posted some info about this a short while ago and he works for ATI and seemed very knowledgable so I would trust his info..
Yes the F1 can make 100 more HP but would suffer from the same probelm as the D1 with the restrictive ATI inlet hat, probably a D1 without the inlet hat would make as much power as the F1 with it. If you could get a good deal on an F1 where it would cost little to upgrade it would be a good idea but I probably wouldnt spend 1500.00 to do so. I would concentrate on getting all there was to get out of the D1 first
Bigger pulley = less chance for belt slip but I dont see any problem with this SDCE maxing out a D1. The ATI 8 rib would probbaly benefit from the larger F1 blower pulley though.
Yes the F1 can make 100 more HP but would suffer from the same probelm as the D1 with the restrictive ATI inlet hat, probably a D1 without the inlet hat would make as much power as the F1 with it. If you could get a good deal on an F1 where it would cost little to upgrade it would be a good idea but I probably wouldnt spend 1500.00 to do so. I would concentrate on getting all there was to get out of the D1 first
Bigger pulley = less chance for belt slip but I dont see any problem with this SDCE maxing out a D1. The ATI 8 rib would probbaly benefit from the larger F1 blower pulley though.
Originally Posted by kp
I would concentrate on getting all there was to get out of the D1 first
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Originally Posted by BlkHwk
I currently own a D1SC and am considering upgrading to an F1. What all would be involved in the conversion? Anyone have pics of the F1 installed on an F-Bod LS1? If I am not mistaken the D1 runs out of steam around 750rwhp and am just curious what it will take to push the envelope a little higher.
I will tell you this. The little air inlent piece that came with your D-1SC kit will not work for several reason, but mainly because the the sharper the turn getting the air to the blower the less air that will get in. The radius of that turn makes more of a differenct on how much power the procharger setups make than anything else. You will have to fabricate something to get air to the F-1. I know this from experience. Lots of people have made it work, but to do it correctly, you most likely will have to move the bottom of the radiator forward some to make the inlet radius less severe.
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We recently picked up two pounds of boost with a D-1SC by swapping out the tight air inlet ATI piece to a 4" elbow and a larger filter. The bottom of the radiator had to be moved out, which was very easy to do. This ProChargers boost went from 14 psi to 16 psi, and belt slippage has been non existant since we enlarged the air inlet. This car still has the stock ATI brackets to boot. Bob
Sounds like the F1 is going to be the way I will eventually need to go. I think the D1 will be quickly maxed out on my new engine combo. I have an 8.5" 8 rib crank pulley I had made a couple of years ago to eliminate belt slip (before the SDCE setup) but still have yet to try it out. When the blower goes back on will be the time to test it out.
Bob, how far forward did you have to move the radiator? Looks like if I go with the F1 it will have to be moved anyway. what all was involved in moving it? I will be keeping the A/C and it looks like the condensor is as far forward as it can go now. I will look closer when the engine is out.
How about some pics of the 4" inlet and filter?
I have been waiting patiently for pics since I read about it on Mike's car.
Bob, how far forward did you have to move the radiator? Looks like if I go with the F1 it will have to be moved anyway. what all was involved in moving it? I will be keeping the A/C and it looks like the condensor is as far forward as it can go now. I will look closer when the engine is out.
How about some pics of the 4" inlet and filter?
I have been waiting patiently for pics since I read about it on Mike's car.
Last edited by BlkHwk; Apr 9, 2006 at 07:18 PM.
Originally Posted by BlkHwk
Sounds like the F1 is going to be the way I will eventually need to go. I think the D1 will be quickly maxed out on my new engine combo. I have an 8.5" 8 rib crank pulley I had made a couple of years ago to eliminate belt slip (before the SDCE setup) but still have yet to try it out. When the blower goes back on will be the time to test it out.
Bob, how far forward did you have to move the radiator? Looks like if I go with the F1 it will have to be moved anyway. what all was involved in moving it? I will be keeping the A/C and it looks like the condensor is as far forward as it can go now. I will look closer when the engine is out.
How about some pics of the 4" inlet and filter?
I have been waiting paitiently for pics since I read about it on Mike's car.
Bob, how far forward did you have to move the radiator? Looks like if I go with the F1 it will have to be moved anyway. what all was involved in moving it? I will be keeping the A/C and it looks like the condensor is as far forward as it can go now. I will look closer when the engine is out.
How about some pics of the 4" inlet and filter?
I have been waiting paitiently for pics since I read about it on Mike's car.
Take care.
Clint
TECH Enthusiast
Joined: Dec 2005
Posts: 590
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From: Scottsdale, AZ
I wouldn't say the D1 runs out of steam at 750rwhp because that's based on the motor. I would say it runs out at 16psi or so... If the motor sucks, no blower in the world will make over 750 at the tire. I run 10psi on my setup for my numbers on 91, imagine what 14psi would do. Yeah the block would let go for sure, but pretend it held up. Then picture that with the right heads and bottom end to support agressive tuning.
The F1 is a badass blower though, but make sure the setup is ready to complement such a blower so you're not mad if you make crap power.
The F1 is a badass blower though, but make sure the setup is ready to complement such a blower so you're not mad if you make crap power.
Originally Posted by HUGGER ORANGE SS
I have a 8" Crank pulley, and Mine is pretty close to the J bracket. I can see your will be a lot closer almost touching it I'll bet..
Take care.
Clint
Take care.
Clint
I sure hope it works. It wasn't cheap to have this puppy cut out.
Originally Posted by Drewstein
I wouldn't say the D1 runs out of steam at 750rwhp because that's based on the motor. I would say it runs out at 16psi or so... If the motor sucks, no blower in the world will make over 750 at the tire. I run 10psi on my setup for my numbers on 91, imagine what 14psi would do. Yeah the block would let go for sure, but pretend it held up. Then picture that with the right heads and bottom end to support agressive tuning.
The F1 is a badass blower though, but make sure the setup is ready to complement such a blower so you're not mad if you make crap power.
The F1 is a badass blower though, but make sure the setup is ready to complement such a blower so you're not mad if you make crap power.
Its not all about PSI. Nor is it all about the motor. (Although you need a pretty solid shortblock to take the abuse) Basically max output from a blower motor is all dependant on the max output of the blower itself measured in CFM. The D1 is capable of putting out a max of 1400 CFM which according to the ATI website is good to about 900 flywheel hp.
Thanks for the heads up Drewstein, I have tried to take the necessary precautions to make sure this thing holds together.
BTW nice numbers in your sig.
Originally Posted by BlkHwk
Sounds like the F1 is going to be the way I will eventually need to go. I think the D1 will be quickly maxed out on my new engine combo. I have an 8.5" 8 rib crank pulley I had made a couple of years ago to eliminate belt slip (before the SDCE setup) but still have yet to try it out. When the blower goes back on will be the time to test it out.
Bob, how far forward did you have to move the radiator? Looks like if I go with the F1 it will have to be moved anyway. what all was involved in moving it? I will be keeping the A/C and it looks like the condensor is as far forward as it can go now. I will look closer when the engine is out.
How about some pics of the 4" inlet and filter?
I have been waiting patiently for pics since I read about it on Mike's car.
Bob, how far forward did you have to move the radiator? Looks like if I go with the F1 it will have to be moved anyway. what all was involved in moving it? I will be keeping the A/C and it looks like the condensor is as far forward as it can go now. I will look closer when the engine is out.
How about some pics of the 4" inlet and filter?
I have been waiting patiently for pics since I read about it on Mike's car.
