I was going through my piles of paperwork today and typed up the specs from the cam and spring sheets. These are for the Forced Performance 3 cams. The springs are from Brian Crower and are currently available for only $228!!!
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Comp Cams
Engine: MIT 4G63 2.0L DOHC 258 Intake
Valve Timing @ .050 43 BBD 11- ATD
These Specs are for cam installed @ 116.0 Center Line
Duration @ .050: 212
N/A Springs Required.
Valve Spring Specs Furnished with Springs
Serial #: UM3529-05
Part #: 101-302-8E
Grind #: XE258HR-107+9
Brian Crower Springs
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BC1100
Spring Type: Round Cylindrical Spring
Material: ASTM A877 OTCS
Wire Size: 0.162 +/- 0.0012"
Load 1: 95 +/- 5 lbs.
Height 1: 1.500"
Load 2: 235 +/- 9 lbs.
Height 2: 1.000
Total # Coils: 6.28
Total Active Coils: 4.28
Free Length (ref): 1.879"
I.D.: 0.776 +/- 0.010"
O.D.: 1.100 +/- 0.010"
Solid Height: 0.036 +/- 0.030"
Rate: 280.0 lbs/in.
Helix Direction: Right Hand
Indentification: 1 Blue Stripe
Min Tip Thickness: 0.040"
Max Squareness: 2 degrees
Natural Frequency: 35146 cpm
Spring Mass: 44.0g
From Site:
Spring Pressure:
BC1100 Seat: 1.500" @ 95 lbs / Open: 1.000" @ 235 lbs / Coil Bind: 0.910" (no machine work required)
Brian Crower Retainers
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BC2100
From Site:
CNC machined from 6AL4V round bar titanium
Getting the engine bolted in is about 10% of the way there.
The next 80% can go quickly with help and skill.
That last 10% takes about as long as the 90% that came before it.
"Requires".. sure that's not another word for "you'll need to buy this from us"?
We saw no signs of float with my engine on the dyno. That was only to 7500rpm though.
Getting the engine bolted in is about 10% of the way there.
The next 80% can go quickly with help and skill.
That last 10% takes about as long as the 90% that came before it.
I agree with Leon. The "X" cams are supposed to have really aggressive ramp profiles. If FP says they require them, then I believe them. They aren't the type of people to suggest unneeded parts.
I'll give you a few minutes to draw some conclusions from the above information.
Getting the engine bolted in is about 10% of the way there.
The next 80% can go quickly with help and skill.
That last 10% takes about as long as the 90% that came before it.
I have had recent info that FP cams/CompCams, may not be ground correctly. An engine builder in my area has had major problems with the cams not being ground on center and requiring cam degree adjustment. Here's the link:
That is barely above idle . This problem becomes more aperent above 8k.
Than it should never be a problem with a 2.4 right?
Getting the engine bolted in is about 10% of the way there.
The next 80% can go quickly with help and skill.
That last 10% takes about as long as the 90% that came before it.
. This problem becomes more aperent above 8k.