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Old 02-26-2004, 07:25 AM   #1 (permalink)
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22RE Cam Info and Specs

Her is some Cam info from :

Gnarly4X - All is copied from a couple of his post:

My 22R, Thorely Header, 2” exhaust, Cherry Bomb Turbo Muffler, stock Toy cam, target HP at 4800 RPM

Stock Toy Cam:
2200 RPM –112 brake tq, 46.8 brake HP
2500 RPM - 122, 57.9
2800 RPM - 132, 70.4
3100 RPM - 141, 83.4
3400 RPM - 149, 96.1
3700 RPM – 145, 102
4000 RPM – 143, 109
4300 RPM - 140, 114
4600 RPM - 136, 119
4900 RPM - 132, 124

Comp Cam 252S:
2200 RPM –126 brake tq, 52.9 brake HP
2500 RPM - 135, 64.4
2800 RPM - 141, 75.4
3100 RPM - 146, 86.1
3400 RPM - 150, 97.3
3700 RPM - 147, 104
4000 RPM – 144, 110
4300 RPM - 140, 115
4600 RPM - 137, 120
4900 RPM - 133, 124

Erson 268
2200 RPM –123 brake tq, 51.3 brake HP
2500 RPM - 131, 62.3
2800 RPM - 139, 74.0
3100 RPM - 145, 85.6
3400 RPM - 151, 97.9
3700 RPM - 146, 103
4000 RPM – 143, 109
4300 RPM - 139, 114
4600 RPM - 136, 119
4900 RPM - 132, 123

Engine Builder 261:
2200 RPM –121 brake tq, 50.9 brake HP
2500 RPM - 131, 62.1
2800 RPM - 139, 73.9
3100 RPM - 145, 85.5
3400 RPM - 150, 96.8
3700 RPM - 146, 103
4000 RPM – 143, 109
4300 RPM - 140, 114
4600 RPM - 136, 119
4900 RPM - 133, 124

Crane 70400-10
2200 RPM – 119 brake tq, 49.8 brake HP
2500 RPM - 127, 60.6
2800 RPM - 137, 73.0
3100 RPM - 144, 84.9
3400 RPM - 149, 96.6
3700 RPM - 146, 103
4000 RPM – 143, 109
4300 RPM - 139, 114
4600 RPM - 136, 119
4900 RPM - 132, 123

TRD Level 1
2200 RPM – 117 brake tq, 49.2 brake HP
2500 RPM - 126, 60.1
2800 RPM - 136, 72.6
3100 RPM - 144, 84.8
3400 RPM - 149, 96.6
3700 RPM - 147, 104
4000 RPM – 144, 110
4300 RPM - 140, 115
4600 RPM - 135, 119
4900 RPM - 131, 122

DOA 260
2200 RPM – 108 brake tq, 45.1 brake HP
2500 RPM - 117, 55.7
2800 RPM - 130, 69.1
3100 RPM - 140, 82.7
3400 RPM - 149, 96.2
3700 RPM - 146, 103
4000 RPM – 143, 109
4300 RPM - 140, 115
4600 RPM - 136, 119
4900 RPM - 133, 125

LCE Stage 1
2200 RPM – 101 brake tq, 42.3 brake HP
2500 RPM - 110, 52.4
2800 RPM - 124, 65.9
3100 RPM - 136, 80.3
3400 RPM - 146, 94.7
3700 RPM - 144, 102
4000 RPM – 143, 109
4300 RPM - 141, 115
4600 RPM - 137, 120
4900 RPM - 135, 126

Toy Stock: PK Tq 149, Avg Tq 135, Pk HP 124, Avg HP 92.3
Comp Cam: Pk Tq 150, Avg Tq 140, Pk HP 124, Avg HP 94.9
Erson Cam: Pk Tq 151, Avg Tq 139, Pk HP 123, Avg HP 93.9
EB 261: Pk Tq 150, Avg Tq 138, Pk HP 124, Avg HP 93.8
Crane: Pk Tq 149, Avg Tq 137, Pk HP 123, Avg HP 93.3
TRD L1: Pk Tq 149, Avg Tq 137, Pk HP 122, Avg HP 93.3
DOA 260: Pk Tq 149, Avg Tq 134, Pk HP 125, Avg HP 92.0
LCE 230: Pk Tq 146, Avg Tq 132, Pk HP 126, Avg HP 90.8

These cams seem to be the most effective if you are looking for improved torque numbers in the RPM range where most of us drive. If you are looking at high RPM cams to produce more HP in a modified engine, usually sacrificing lower end torque, these would probably not be your cam of choice. That's just my humble opinion.
Gnarls.


quote:
--------------------------------------------------------------------------------
Originally posted by dknightd


I'm always suspicious of software determined dyno numbers.
--------------------------------------------------------------------------------



The sofware makes some assumptions, but generally it can be accurate to about 1%. It will not ever be as accurate a live dyno test performed by a certified dyno engineer.


quote:
--------------------------------------------------------------------------------
[What input does your software take for the cam? [/B]
--------------------------------------------------------------------------------



All the common specs- it’s pretty much an American industry standard at .050”), The Centerline in degrees ATDC for intake, and Centerline in degrees BTDC for exhaust, Duration @ .050” BTDC, Close @ .050” ABDC, Max Lobe Lift in inches, Rocker Arm Ratio that the cam grinder used, Lobe Separation in cam degrees, Intake Gross Valve Lift in inches for both exhaust and intake.


quote:
--------------------------------------------------------------------------------
[There is more to cams than lift and duration. Intake and exhaust timing, as well as lobe shape can also play a big role. How much does your software take into account? [/B]
--------------------------------------------------------------------------------



Lobe shape is primarily determined by the lift and duration numbers, so the "shape" is based on, more or less, physical constraints and geometry. Once the base circle is determined in the lobe, the "shape" can be altered but with very little latitude for change within a given lift/duration set of numbers. Live testing will produce more accurate test data.


quote:
--------------------------------------------------------------------------------
[One intersting thing about your numbers is that they have the torque peak at 3400 rpm. If you plugged back in stock exhaust does the peak change? [/B]
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Yes, the numbers decrease. The header and opened exhaust will produce about 10 to 15% increase.


quote:
--------------------------------------------------------------------------------
[I always thought the 22r made max torque at around 2800rpm. [/B]
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Yes, but with cam and headers, you get better numbers in the torque curve and the torque will move up the curve.


quote:
--------------------------------------------------------------------------------
[I was really hoping those were actual numbers from a real engine. [/B]
--------------------------------------------------------------------------------



Yeah.. wouldn't that be special!!


quote:
--------------------------------------------------------------------------------
[It would have been the best cam comparison I'd ever seen if so. Still intersting stuff. According to your software most of the aftermarket cams deliver a wider flatter torque peak - a good thing... [/B]
--------------------------------------------------------------------------------



The cams profiles compared here are for the lower end torque performance, most manufacturers offer bigger cams with bigger higher RPM profiles for more modified engines. TJMHO.

Gnarls.


Gnarls did a decent write up w/ some good cam info... thought I might post it for him.
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