FP2x cams

2deep said:

I've already ordered a set of FP2x cams from Forced Performance. They recommend only using these cams with dual valve springs. Will the SI Dual Springs w/ Manley Titanium Retainers that SlowBoy sells be good enough for use with these cams? I want an unbiased opinion. I'm sure if I contact FP they will say I need their springs, and if I contact SBR they will say their springs will stand up to anything. Any help will be aprreciated

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I run the Manley single springs with the Comp 101400 cams, they have more lift and duration than the FP2... so you would certainly be fine with SI duals if thats the way you decide to go.

MGH

MikeHuml said:

I run the Manley single springs with the Comp 101400 cams, they have more lift and duration than the FP2... so you would certainly be fine with SI duals if thats the way you decide to go.

MGH

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I recall talking to some one at your camp before and they told me the manleys have more seat pressue than the SI kit and that the SI required some kind of funky install (head bolt clearance or some thing)


I can't imagine single springs on the 101400 however, how high are you spinning that sucker?

14.5 drift said:

I recall talking to some one at your camp before and they told me the manleys have more seat pressue than the SI kit and that the SI required some kind of funky install (head bolt clearance or some thing)


I can't imagine single springs on the 101400 however, how high are you spinning that sucker?

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The SI kit does require a kit to space the spring correctly, and yes getting an ARP nut by the springs is a feat in itself, but it can be done if you are a little creative. I have used the SI's before in my car, but since Manley asked me to run the single spring I have with no issues what so ever.

Typically 9500-10k.

MGH

MikeHuml said:

The SI kit does require a kit to space the spring correctly, and yes getting an ARP nut by the springs is a feat in itself, but it can be done if you are a little creative. I have used the SI's before in my car, but since Manley asked me to run the single spring I have with no issues what so ever.

Typically 9500-10k.

MGH

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What kind of kit is needed for the SI v-springs? I wonder why I wasn't told about this when ordering these. So whats' required for the installation?

2deep said:

What kind of kit is needed for the SI v-springs? I wonder why I wasn't told about this when ordering these. So whats' required for the installation?

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If you ordered the kit from us, you will get everything you need for installation!

MGH

Great Mike, I got it thru your Canadian distributer, Ziggy Dietrich. He's got a bunch of SBR goodies for me

2deep said:

Great Mike, I got it thru your Canadian distributer, Ziggy Dietrich. He's got a bunch of SBR goodies for me

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Go RTM!!!!

Thank Ziggy for me

MGH

MikeHuml said:

The SI kit does require a kit to space the spring correctly, and yes getting an ARP nut by the springs is a feat in itself, but it can be done if you are a little creative. I have used the SI's before in my car, but since Manley asked me to run the single spring I have with no issues what so ever.

Typically 9500-10k.

MGH

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Excellant. Makes me feel alot more comfortable about my setup, being the new comp/FP cams are sort of uncharted I was worried how high I could spin my new motor. I went with the 101300/fp3 and supertech dual setup. Looking for a modest 9000RPM


Thanks for quick responses

14.5 drift said:

Excellant. Makes me feel alot more comfortable about my setup, being the new comp/FP cams are sort of uncharted I was worried how high I could spin my new motor. I went with the 101300/fp3 and supertech dual setup. Looking for a modest 9000RPM


Thanks for quick responses

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You will be just fine

MGH

Manley single springs here too on a FP3'd 2.4 with heavier 2mm o.s. valves. "When" the car is running, the motor has spun to over 8200 rpm without any issues.

You think the manley springs fp2x combo is worth it over just going with the 272's or fp2's with stock springs. From what I have read the fp2x's will keep my low end power respectable AND give me the top end power I need, but I don't want to have to spend the extra 125 for the springs if fp2's or 272's will be good enough. FOr a reference I will have all other stock but rebuilt head parts other than the springs and cams if I go that route and will be reving to 8k cause I have a dejon tool smim and a SBR GT14 turbo.

FP2X's have a higher ramp and accel rate than the FP3's per FP's website. I'd think twice about saving 100$ on a set of springs when a dropped valve is a whole bunch more.....