Do you mean FRPP? Is it a roots or centrifugal? If it's a roots, I think it was a fairly small M90 Eaton unit. Not sure about the FRPP branded centris though. Do you have a link so we can see it and let you know for sure?
...
Bottom line is that the SVT roots blower, barring a crap electric supercharger, is considered by far to be the most limiting blower power-wise you could install on a 4.6 engine, even compared to a powerdyne or a vortec A-trim (it will make more torque but less power). With a set of good ported heads and cams and free flowing exhaust, you will quickly exceed the capability of this blower. 375rwhp, maybe 400rwhp and this blower is done in.
For the money you would pay to install it, I would look at a trick flow head swap, or some other supercharger platform if you want positive displacement grunt.
I have seen a couple of these blowers over the years and I got curious and did some research. I thought for a long time they were eaton m90's, turns out I was wrong. They aren't 90's they are 112's, and they aren't eatons either, they're magnuson. And they aren't intercooled. Ford commissioned Magnuson to design an integrated intake/roots supercharger assembly for FRPP and let them develop it independently. Turns out Ford was pretty disappointed with the specs on this unit and so they didn't release a lot of information on them....but they packaged and sold them anyway.
The unit is based off the basic eaton m90 design with lengthened rotors to give it a total dispacement of 112CID, but that's also the problem. Magnuson lengthened the rotors but didn't beef them up at all. The original eaton m90 was limited to around 15,000 rpm to prevent rotor flex and subsequent shearing. This magnuson blower was limited to a paltry 12,000 due to increased rotor length. What all that means is that the base Eaton m90 is rated to flow more air than the Magnuson 112 that was used in the Ford SVT kit.
Eaton came out with their own 112 a couple of years later just in time for the Lightning (Ford had a lot more input into the design of this kit as it was OEM) and further improved it when the Cobra was released. It was a tremendous improvement in durability and rpm capability (rated for 15,000 rpm and sometimes spun well over 18,000). Best of all, it had intercooling as well.
Bottom line is that the SVT roots blower, barring a crap electric supercharger, is considered by far to be the most limiting blower power-wise you could install on a 4.6 engine, even compared to a powerdyne or a vortec A-trim (it will make more torque but less power). With a set of good ported heads and cams and free flowing exhaust, you will quickly exceed the capability of this blower. 375rwhp, maybe 400rwhp and this blower is done in.
For the money you would pay to install it, I would look at a trick flow head swap, or some other supercharger platform if you want positive displacement grunt.
+1 from an owner .... although I don't think I've ever seen literature that stated it was an SVT product. SVO and FRPP were listed along with some testing by ROUSH.
well the whole thing was about finding out if it was a better unit than my current powerdyne but i have not seen anything supporting that it is in fact a better unit or even put out any more power. so i'll just save my pennies for the pro charger.
As an owner of this blower, here's what I have to say about it.
If you are wanting big numbers, then this blower is probably not for you. The fact that it is non-intercooled just limits it so much. I guess you could go methanol injection or even nitrous on top of the blower, but unless it was a big shot (which almost eliminates the purpose of the blower in the first place, making it a waste of money), you still probably won't get out of the mid 400s (this is with cams and/or heads + a lot of boost + meth). This blower just wasn't designed to do that.
If you are looking for a fun, reliable car to drive, and don't want to spend a fortune on a positive displacement blower, then this is for you. I paid less than $2000 total for mine, and am getting all that low end torque that the centrifugal blower doesn't give you. Come to think of it, I think this blower is the only way us NPI guys can have a positive displacement supercharger; Kenne Bell and Tork Tech have kinda left us hanging. And the advertised 55 hp?I doubt mine made much over 200 rwhp before the blower, and I'm making 325 on 6-7psi (stock pulley), PI cams, and simple bolt ons through the ah-toe. The car is a blast to drive, even though it (currently) only runs 13.0s.
Bottom line: If you want a FAST car, then look elsewhere. If you want a FUN car, then this blower certainly makes a decent candidate.
i just noticed your #'s how can you be making 325hp on your aode with just 7lbs of boost & PI cams??? you are right your car stock was probobly 180-190 rwhp i would guess that you'd be making somewhere in the mid 200's for hp.
PI cams are probobly going to give you 15-20 hp max and your charger maybe we'll say 75hp an aode looses more hp than a stick thru the drivetrain
i believe that the rating for most blowers are based on a manual trans due to they make more power( without having a aod race preped trans). I could be wrong I'm still learning. with my own car I have the complete PI swap w/thumper cams and running an 11lb pulley and the compression is very high and with a bunch of timing taken out and 8 degrees out of the cams my car is tuned at 300hp & 310tq if i add a meth kit I would be running 330hp. I was also told and I already knew that i will be needing a built bottom end if I was to get to the 400hp mark. what else are you running to get those #'s?
where can we buy one of the SVO superchargers for the 96-98 4.6 mustang? I want one for my daily driver...seems like a good price
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?