FP4R Cams

[thilaksharma]

Any of u guys have any opinion on the FP4R cams over here ?
Maybe u could elaborate on its low , mid and top power.

This is the cam card below
Valve Adjustment: 0.000 0.000
Max Gross Valve Lift 0.440 0.425
Cam Lobe Lift: 0.256 0.247
Camshaft Specification Card
Adv. Dur. @ 0.004 " Valve Lift: 270 270
Adv. Dur. @ 0.050 " Valve Lift: 224 224

it seem to look like a pretty big cam , but im unsure whether it will suite my application

I run a 6bolt engine 2.0 , 850cc injectors , Frank 50trim turbo.
According to the site, its minimum requirement is a 50lb/min turbo.

I did email FP, their anwser seem short , its just "Yes" without any explanation (I know they r bz)
My next choice is a FP2 , that is all that is left before the FP4R cams.
Hehe , Chris@MAPerformance is waiting for me to finalize my order.

 

[kittay]

x2 I'm wondering if anyone has ran these, and what the vacuum is like?

 

[thilaksharma]

x2 I'm wondering if anyone has ran these, and what the vacuum is like?

hehe there are a few in dsmtuners, but i see them running GT42's and one more has a 70mm turbo , thts freaking huge compared to my puny 50trim

 

[LaserAWD]

I have these cams, IIRC I get around 14 in-hg at a 1000 rpm idle. My car is down right now so I can't just run out and check but I do remember they pulled a bit less vacuum than HKS 272's in my car which were around 18 in-hg.

I'll also 2nd FP's "Yes". These cams pretty much rock, no need to ever upgrade your cam again as long as you keep your turbo below 42r size

Edit: I'm running a 3052 with these cams and love it, more power up top than the HKS 272s with a very small loss in spool, maybe 200 rpms.

 

[kittay]

I'm ordering them on Friday.. Car won't run for a while, so be a nice hood ornament til spring!

 

[daren_p]

I was just checking the FP site out the other day. I'm converting the fwd to awd so would like a cam thats better suited to my turbo, now that I won't have to do a loaded e-test, just a 2 stage idle (much easier to pass) so I can run a more aggressive cam. Was running the FP1X's & think they are a great cam but think something abit larger would be better suited to my 3052. I was looking to go to the 2X's but I see there no longer offered. Looks like the 4R's are their replacements but the 4R's look like a pretty big step up vs the 2X's. Their still fairly new so haven't come accross much info on them. I'm sure in the right application they'll be an amazing cam, just like all the other FP cams. The standard 2's are still available but I really like how you don't lose as much low/mid range with the X series.

 

[LaserAWD]

Daren - The 4Rs work great with my 3052, I highly recommend them. I made 468awhp, on pump gas, on an AWD dynojet, with these cams. That's an uncorrected number and it was 93* F that day, I believe the corrected numbers put me right around 480awhp. I don't think you can go wrong with these cams, just call up FP and talk to them about it.

 

[daren_p]

Daren - The 4Rs work great with my 3052, I highly recommend them. I made 468awhp, on pump gas, on an AWD dynojet, with these cams. That's an uncorrected number and it was 93* F that day, I believe the corrected numbers put me right around 480awhp. I don't think you can go wrong with these cams, just call up FP and talk to them about it.

Thanks for the input Jerry, I don't doubt the 4R's would work great with the 3052. Problem I'll have to investigate is what they do to emissions. I'm trying to keep the car "street legal" & passing emissions legally. Thats the vary reason the car currently has the 1X cams (instead of the 2X's I would have selected if the car was awd at the time). Like I had mentioned, swapping to awd will allow me to get a good amount more aggressive on cams, but will have to look into them further when the time comes.

Was wondering Jerry, what you have your idle set at & how does it sound? I know with both the 1X & 2X's, they did lump more then the stockers but unless you knew DSM's, probably wouldn't know the difference. Also what kind of vac do you pull at idle & do you have any comparison data with previous cams?

 

[LaserAWD]

Was wondering Jerry, what you have your idle set at & how does it sound? I know with both the 1X & 2X's, they did lump more then the stockers but unless you knew DSM's, probably wouldn't know the difference. Also what kind of vac do you pull at idle & do you have any comparison data with previous cams?

I'm running an AEM EMS and with these cams I have my idle set at 1000 rpms as recommended by FP. When I had my car tuned we didn't try to go any lower than 1000 rpms with the idle. They sound very smooth at this rpm, a small "hit" to them, but nothing large or lope like. If you went for a lower rpm I'm sure more of a lope would develop.

I can't remember the vacuum specs right now and my car has been down for a couple of weeks. I plan on having it back together tonight and can hopefully get you some numbers tomorrow. Just going by memory I want to say 14-16 in/hg but don't quote me on that.

 

[garage16]

You may wanna upgrade your valvetrain as well with a set of springs to be on the safe side. Maybe a set of or BC's beehive springs from Kiggly

 

[LaserAWD]

You may wanna upgrade your valvetrain as well with a set of springs to be on the safe side. Maybe a set of or BC's beehive springs from Kiggly

This is a good point

At the time I installed my FP4Rs I also bought the FP beehive springs with Evo retainers. FP said this combo is good for 9k rpms. On the dyno my power didn't start leveling out until ~8300 rpms, never dropped off though, just went level all the way to my 8700 rpm limiter.

 

[garage16]

This is a good point

At the time I installed my FP4Rs I also bought the FP beehive springs with Evo retainers. FP said this combo is good for 9k rpms. On the dyno my power didn't start leveling out until ~8300 rpms, never dropped off though, just went level all the way to my 8700 rpm limiter.

I was told same thing when I got my cams off FP, they said to go with a set of beehive type springs

 

[kittay]

I'll be running the Crower springs and retainers with them.

What worries me slightly is when I was first looking into them, it said for 4r and 5r cams, "Having proper valve stem height is REQUIRED in order to use the 4R and 5R cam. This is not an option."
.... And now on the site it says that only for the 5r. Jerry, did you check the valve stem height?

 

[daren_p]

From the limited amount of info I've seen on them, the 4R's are basically supposed to be idiot proof, drop ins. Do you think the Crower springs will be aggressive enough for these cams? I currently run the crowers & their titanium retainers but would be looking at the beehives if I went with these. I think the crowers are about the least "aggressive" of the aftermarket singles.

 

[LaserAWD]

.... And now on the site it says that only for the 5r. Jerry, did you check the valve stem height?

I did not check the valve stem height. I was told that was just for the 5R and the 4R is about the biggest drop in cam you can get.

Do you think the Crower springs will be aggressive enough for these cams? I currently run the crowers & their titanium retainers but would be looking at the beehives if I went with these. I think the crowers are about the least "aggressive" of the aftermarket singles.

I had the old Crower, not Brian Crower, springs and ti retainers on my car before these cams. The guys at FP told me they had customers that had issues above 8k rpms with 4Rs and the Crower spring/retainer combo. I knew I was going higher than that so I replaced the springs. I would definitely call and talk to FP about it as I don't think they recommend running the crower spring/retainer combo even if it does ok in the lower rpms.

 

[garage16]

When I called FP to order/ and get info about the 5r cams, they told me not to use BC ### they are no good ### really "who goes fast with BC stuff?" is what they said so I went ahead and got the Kiggly stuff.

But for street use I would go with BC anyways ### you wont rev to 10+ every shift

 

[LaserAWD]

Well after much delay I finally got my car back up and running. I just wanted to bump this up and say that my memory must be going a bit I get around 10 in/Hg with the 4R cams idling at 1000rpms. The 14-16 I remembered must have been the 272's that I had before the 4R cams.