When I decided to switch to a Procharger in the fall I posted a question regarding possible fitment of the F1R v. the F1. There were conflicting replies. I ended up going with the F1, and interestingly, my buddy bought an F1R for his 5-slow. So we had the two side by side. The F1 fits my 4th gen with ~1/8" to spare. The case is that close to the "frame rail". To fit the F1R would have required some fairly major surgery. And the inlet tubing was a tight fit as well. Since the F1R has a 1/4" larger inlet, this would also have been a challenge.

So, while it's certainly possible to fit an F1R on a street 4th gen, it would be fairly far from a "bolt-on" proposition. Just thouight anyone contemplating this might want to know. Since even the F1 will flow >25% more air than the S-trim it replaced, it should be "adequate" anyway. The F1R on my buddys 331 made 20psi at 6,400rpm in initial testing. We got some new pullleys to spin it faster and expect to see 24psi at 6,400 and maybe up to 30psi at 7,000. I don't need that much boost (his car is 99% track and he is running C16).

Rich Krause

 

When I rotated my F1 compressor housing (so that the outlet was at a 6:00 o clock position) I actually had to grind away from the block. Also on the frame rail there is a bracket that holds your ABS. Make sure you cut the fins off the bracket so it doesn't hit your compressor. Have fun with your F1.

 

Yeah, the F1-R is a lot "thicker" than the F-1 front to back. I would have thought that it would creat major fitment issues.

 

Thanks for the FYI Rich. Gives me something to look forward to.

 

Rich, Do you know where the D series fits in? Why did you go with the f series over D? (other than the bigger is better rule)

 

Ken,the F series is going to be phasing out the Dseries.
F's also move more air,have dual bearings,self contained(some still argue if that is good or bad).

The F series is just the new evolution for ATI.

 

Anyone have pics of the F1 setup? I'm contemplating going supercharged, and I'm trying to determine the difficulty level of installing an F1. I don't want a whole lot of fabbing.

 

Rich,

thanks for the info.

Im betting you did your "shopping" before you dropped the cash on the F1 setup.

Mind if I ask who you ordered it from?

Thanks!

 

The F1 did not require significant fabbing. The F1R most certainly would.

Rich Krause

 

www.kennedysdynotune.com

Rich

 

Rich,i have been searching like mad on the F1 and F1r Topics and i must say thanks for the info you provide.

My question is,how close does the F1 come to the bolt that holds the Kmember on? I will be losing ABS,and have been comtemplating the F1R,i have that head unit in the garage i can use to fit up,but might go with the F1 like you did if the fabbing is too much of a PITA.

 

F-bud: I think the F1R would be a problem mounted in the usual position. There are a couple of spots with ~1/8" clearance with the F1 and the F1R is ~1" larger diameter. If you have one to work with, you can get a much better idea by doing some test fitting than relying on my poor descriptive powers. But the closest spot was the "frame rail", the crossmemeber is pretty tight too. It's off the car right now, so I can't give you any measurements at this point.

If I were consdering the F1R I would figure on mouning it up high on the passenger side and resign myself to a lot of fab work. It sure blows a lot of air though! My buddy has one on his 331ci 5.0 Mustang stroker and it makes 22lbs of boost and it has another 10,000rpm in it if he wants more. The thing is, the F1 flows 1,525cfm, wnough to make ~1,000hp. So you need to dsecide on your goals. If you need more air than this, do what you need to make the F1R work. If you don't, it;s a waste of time and money.

Rich Krause

 

Rich,thanks again for the info/insight. i know the F1 will make the power i am pretty much looking for. there is always that "just in case" scenario. I am building a low comp 383 with afr 220 heads that are currently getting ported,and will be running a converted 4bbl style intake with a 1200cfm 4barrel throttle body and accel gen7 dfi. 750+ at the tires is the goal,and the F1 seems like it will be fully capable.
Your posts on the subject have been a GREAT help,and i probably will wind up with the F1,we just werent sure how much worse the f1r would be.

in your opinion,is the standard Bracket "beefy" enough for the F1?

 

The bracket seems fine. As I mentioned in another thread, plan on fabbing up an intake of some sort, as the supplied stuff is crapola! I am using a 12-rib belt. My friends cog F1R setup needed custom bracketry though.

Rich Krause