YouKnowWho711

Let me save you some trouble with the spacing of the Procharger Blower Pulley. I just went through this. You'll need their part PDW01C-160 / .160 D-SERIES IMPELLER SHIMS. This was for my D1SC, but the F1A should use the same one.

.160" thick and it spaces the blower pulley forward, using the same bolt.

Here's a pic

YouKnowWho711

I'll get you a picture and part # of the idler tensioner pulley spacer too..it looks a little different.

turbotuner20v

Yea, 2" headers are definitely on the list to try at some point to get every last hp. I have a set of OBX 1.875" I'm going to run for now though. It's not too bad to swap headers on the lift.

turbotuner20v

Nice, I know the F series case is a little wider than a p/d1sc, so I'll call them up and ask about that and see if it's what I need. I can always just grab a washer from the hardware store too since it's a tiny amount to get the lazer shifted onto the top of the rib. I used to have a thin, shoulderless 6-rib tensioner so I'm definitely interested to see what you've got for your 8-rib tensioner.

turbotuner20v

Engine is in and all accessories are connected:

No Juice

Nice Build!!!! and Great Write Up

In for results

peter pan

Very stout build you have going on and got to like the sound of a Procharger

ShaneFap

Very nice stuff i'm sure ill either see the car in TX or at one of the KC meets this year.

Arun@Dasilvamotorsports

Looking good buddy. Our builds are so similar-can't wait to see the final results!

turbotuner20v

Yup, I love the sound. My d1sc had the helical gears and was too quiet.

turbotuner20v

You have a ysi right? I'm curious what a maxed out f1a will make on this setup.

White_Lightning

im intersted to see your numbers.. please post up a dyno image when done.. im running the same pully sizes as you and am interested to see how the combo differences does power wise.. i know the smaller cubes will mean you dont run out of steam up top like mysetup is

turbotuner20v

You're doing an f1r build right?

White_Lightning

its already complete..

434 lsx and F1R 4" blower 8" crank pully.. and over 6600ish its plain out of steam.. the motor was built for an F2... the F1r just doenst push enough air up top. its setup very conservitavly.. 4000-6500 it makes good power compared to the same blower on a smaller motor.. but 6500-7000 its very obvious the blower just cant push enough air. i would need an F1X or F2.. and im just tired of ****ing with it.

turbotuner20v

Well... if you need to unload an f1r, let me know

Assume it broke 1k?

White_Lightning

nope.. the F1Rs the break 1k from what i have seen are spun REALLY hard on a small motor.. or pullied down really low and are out of steam by 5500..

mine made 926/896 with a very safe tune... but the power curve seems pretty good till it runs out of steam.

Arun@Dasilvamotorsports

Overspinning the F1R is not a good idea-ever. It will build a tonne of heat. 74k is the max an F1R should be pullied to, after 68K watch the temps just skyrocket.

Not sure what the issues are but most of the serious F1R piloted cars are making 1200 rwhp easily.

I think alot of it has to do with 4" stroke most people run. The Fastest F1R cars are running no more than a 3.4" stroke.

I'm going to an engine building tuning seminar at Steve Morris's this weekend and I'm hoping he can shed some light.

Here's an old school setup with 23 degree heads.

turbotuner20v

I would like to break 900 on e85, so we will see. I may over spin it with a 3.70 pulley plus meth and see if it makes any more power and if intake temps stay in check.

White_Lightning

most of the BIG power F1R cars from what i have seen are smaller motors, and have a big peak.. my blower is hitting around 70k rpm @ 6600 rpm so its not being over spun.
Like i said.. i got a killer deal on the motor, but it was built for an F2 ( came out of flying medics 1400 rwhp F2 car) but i just couldnt say no to the deal.
..
I have alos seen a BUNCH of similar motor setups with the F1r and similar blower pully combo make almost the exact same numbers... so.. there is nothing " Wrong" with the setup.

ajrothm

Out of curiosity, did you remove the air filter/inlet pipe and try a velocity stack? It really helps them hold on up top..

Mine made very similar numbers to yours.. I was using a 4.25" pulley(69k@6800)... I was at 901/820 SAE at 6000 and holds it to 6500...just started to drop past 6500...(only a 226/238 cam)... It was 926/840 uncorrected. 17* on 93 oct/meth.

We figure a larger cam, couple more degrees timing would make 950 ish SAE with the same 4.25" pulley at 6800 or so....this is on 402".

I also think it would be hard pressed to make 1000rwhp with my f1R.. It would have to be set on kill in every category, and pullied down, and a big cam swap...