Cam info!!

[Loud450man]

Hey guys this seems to be a huge topic . Theres always threads saying "what cam should I get'' so I thought I would post this info for people to check out,since each motor setup and riding style can apply to picking a performance cam. NOTE: I copied this from another forum but i think it will be very usefull so yup, just letting u guys know that i dident do all the testing

Honda 2004-2005 HRC Cam - Part # 14110-NLZ-650

Really strong to top end cam, with a decent mid range, but lacks bottom end.
Intake Lift(inches): .390
Exhaust Lift(inches): .350
Intake Lobe Center (degrees): 110
Exhaust Lobe Center (degrees): 105
Intake Duration (degrees at .040"): 264
Exhaust Duration (degrees at .040"): 268
Intake Open / Close: 22 btc/62 abc
Exhaust Open / Close: 59 bbc/29 atc
Lobe Separation Angle: 107.5
Overlap: 51

Honda 2002 CRF Cam - Part # 14110-MEB-670

A good all around cam, strong bottom and really strong mid range with a decent top end as well.
Intake Lift(inches): .380"
Exhaust Lift(inches): .356"
Intake Lobe Center (degrees): 106.5
Exhaust Lobe Center (degrees): 107
Intake Duration (degrees at .040"): 249
Exhaust Duration (degrees at .040"): 272
Intake Open / Close: 18 btc/51 abc
Exhaust Open / Close: 63 bbc/29 atc
Lobe Separation Angle: 106.75
Overlap: 47

Honda 2003 CRF Cam - 14110-MEB-770

A good mid range cam.
Intake Lift(inches): .380"
Exhaust Lift(inches): .336"
Intake Lobe Center (degrees): 109
Exhaust Lobe Center (degrees): 109
Intake Duration (degrees at .040"): 249
Exhaust Duration (degrees at .040"): 262
Intake Open / Close: 15.5 btc/53.5 abc
Exhaust Open / Close: 60 bbc/22 atc
Lobe Separation Angle: 109
Overlap: 37.5

Honda 2006-2007 HRC / 2004 - 2006 CRF - Part # 14110-NLZ-610 (CRF Part # 14110-MEN-670)

Really strong bottom with a decent mid range.
Intake Lift(inches): .374"
Exhaust Lift(inches): .313"
Intake Lobe Center (degrees): 248
Exhaust Lobe Center (degrees): 268
Intake Duration (degrees at .040"):
Exhaust Duration (degrees at .040"):

HotCams

HotCams Stage 1 - Part #1016-1

Excellent bottom end and midrange increase.
Intake lift (inches): .378"
Exhaust lift (inches): .343"
Intake lobe center (degrees): 106.5
Exhaust lobe center (degrees): 103.5
Intake duration (degrees at 1mm): 237.5
Exhaust duration (degrees at 1mm): 268.5
Lobe Separation Angle: 110
Overlap: 33

HotCams Stage 2 - Part #1024-2

Excellent midrange and top end increase, good all-around cam.
Intake lift (inches): .402"
Exhaust lift (inches): .343"
Intake lobe center (degrees): 106.5
Exhaust lobe center (degrees): 103.5
Intake duration (degrees at 1mm): 248
Exhaust duration (degrees at 1mm): 268.5
Intake Open / Close: 11 btc/ 53abc
Exhaust Open / Close: 55 bbc/23 atc
Lobe Separation Angle: 105
Overlap: 38.25

HotCams Stage 3 - Part # 1056-3

More top-end power than Stage 2. Will work well for TT and big bore/strokers.
Intake lift (inches): .409"
Exhaust lift (inches): .356"
Intake lobe center (degrees): 116
Exhaust lobe center (degrees): 104.5
Intake duration (degrees at 1mm): 251.5
Exhaust duration (degrees at 1mm): 265
Intake Open / Close: 10 btc/62abc
Exhaust Open / Close: 57 bbc/28 atc
Lobe Separation Angle: 110.25
Overlap: 37.75

Megacycle Cams

Megacycle X1 - Part # 108-x1

Race profile for increased mid to top end, must use race piston and valve springs. Intake valve pocket may need cut on piston.
Intake Lift(inches): .430"
Exhaust Lift(inches): .385"
Intake Lobe Center (degrees): 102
Exhaust Lobe Center (degrees): 106
Intake Duration (degrees at .040"): 266
Exhaust Duration (degrees at .040"): 282
Intake Open / Close: 31 btc/ 55abc
Exhaust Open / Close: 67 bbc/35 atc
Lobe Separation Angle: 104
Overlap: 66

Megacycle X2 - Part # 108-x2

Strong midrange / all-around. Must use race piston and valve springs. Intake valve pocket may need cut on piston
Intake Lift(inches): .412"
Exhaust Lift(inches): .350"
Intake Lobe Center (degrees): 108
Exhaust Lobe Center (degrees): 108
Intake Duration (degrees at .040"): 260
Exhaust Duration (degrees at .040"): 268
Intake Open / Close: 22 btc/58 abc
Exhaust Open / Close: 62 bbc/26 atc
Lobe Separation Angle: 108
Overlap: 48

Megacycle X3 - Part # 108-x3
Full race cam max top end. Must use race piston and valve springs. Intake valve pocket may need cut on piston.
Intake Lift(inches): .435"
Exhaust Lift(inches): .385"
Intake Lobe Center (degrees): 104
Exhaust Lobe Center (degrees): 108
Intake Duration (degrees at .040"): 276
Exhaust Duration (degrees at .040"): 276
Intake Open / Close: 34 btc/62 abc
Exhaust Open / Close: 66 bbc/30 atc
Lobe Separation Angle: 106
Overlap: 64

WEB Cam Inc.
613/812 - Part # 57-102
Performance profile to increase mid and upper end power. Higher compression recommended. Must be used with performance spring kit shortened valve guides and adjustable cam gears.
Intake Lift(inches): .381"
Exhaust Lift(inches): .357"
Intake Lobe Center (degrees):
Exhaust Lobe Center (degrees):
Intake Duration (degrees at .050"): 240
Exhaust Duration (degrees at .050"): 258

493/729 - Part # 55-462 Reduced Base Circle
Performance profile to increase mid and upper end power. Higher compression recommended. Must be used with performance spring kit shortened valve guides and adjustable cam gears.
Intake Lift(inches): .415"
Exhaust Lift(inches): .340"
Intake Lobe Center (degrees): ...
Exhaust Lobe Center (degrees): ...
Intake Duration (degrees at .050"): 252
Exhaust Duration (degrees at .050"): 252

493/739 - Part #
Performance profile to increase mid and upper end power. Higher compression recommended. Must be used with performance spring kit shortened valve guides and adjustable cam gears.
Intake Lift(inches): .415"
Exhaust Lift(inches): .410"
Intake Lobe Center (degrees): 110
Exhaust Lobe Center (degrees): 104
Intake Duration (degrees at .050"): 276
Exhaust Duration (degrees at .050"): 276
Intake Open / Close: 16 btc/48 abc
Exhaust Open / Close: 56 bbc/20 atc
Lobe Separation Angle: 107
Overlap: 62

208/921 - Part # 57-042 Reduced or Full Base Circle
Race profile. Higher compression required. Must use performance spring kit, shortened valve guides and adjustable cam gear.
Intake Lift(inches): .408"
Exhaust Lift(inches): .340"
Intake Lobe Center (degrees):
Exhaust Lobe Center (degrees):
Intake Duration (degrees at .050"): 282
Exhaust Duration (degrees at .050"): 298
Intake Open / Close: 19 btc/ 59abc
Exhaust Open / Close: 55 bbc/27 atc

Mysto - Part # 57-072 Reduced Base Circle
The "MYSTO" cam designed for race use ONLY. Higher compression required. Must use performance spring kit, shortened valve guides and adjustable cam gear. Check all clearances!
Intake Lift(inches): .432"
Exhaust Lift(inches): .350"
Intake Lobe Center (degrees):
Exhaust Lobe Center (degrees):
Intake Duration (degrees at .050"): 293
Exhaust Duration (degrees at .050"): 296
Intake Open / Close: 20 btc/ 60abc
Exhaust Open / Close: 54 bbc/26 atc

Johnson Cams

400 - 375 (Little Johnson)
Strong midrange and top end.
Intake Lift(inches): .400"
Exhaust Lift(inches): .375"
Intake Lobe Center (degrees): 108
Exhaust Lobe Center (degrees): 108
Intake Duration (degrees at .040"): 266
Exhaust Duration (degrees at .040"): 284
Intake Open / Close: 26°btc / 60°abc
Exhaust Open / Close: 71°bbc / 34°atc
Lobe Seperation Angle: 108
Overlap: 59

430 - 400 (Big Johnson)
Top end drag cam.
Intake Lift(inches): .430"
Exhaust Lift(inches): .400"
Intake Lobe Center (degrees): 110
Exhaust Lobe Center (degrees): 110
Intake Duration (degrees at .040"): 274
Exhaust Duration (degrees at .040"): 289
Intake Open / Close: 28°btc / 66°abc
Exhaust Open / Close: 74°bbc / 35°atc
Lobe Separation Angle: 110
Overlap: 61.5

Crower Cams

G2 - Part # H04-450-400 Reduced Base Circle
Increases in midrange and top end.
Intake Lift(inches): .400
Exhaust Lift(inches): .394
Intake Lobe Center (degrees):
Exhaust Lobe Center (degrees):
Intake Duration (degrees at .040"): 254
Exhaust Duration (degrees at .040"): 254

 

[Deven]

cam info is a hot topic... Thanks for posting

 

[450Riot]

That's awesome. Saves a shopper a LOT of time. Thanks!

We should get a sticky goin about what peoples mods are, how/where they ride, and what cam they use for it. Or add it to this?

 

[foretrax]

doesn't that also depend on the year of the ATV how it effects it? if not u can beat me

 

[OTMTRX]

Hotcams Dyno graphs.. all in a CRF but will be pretty much the same in the TRX for illustration purposes.

Hotcam Stage 1 (#1016)

Hotcam Stage 2 (#1024)

Hotcam Stage 3 (#1056)

 

[Scandall519]

any info on the Web 943/921??

 

[airmobile101]

Hotcams Dyno graphs.. all in a CRF but will be pretty much the same in the TRX for illustration purposes.

Hotcam Stage 1 (#1016)

Hotcam Stage 2 (#1024)

Hotcam Stage 3 (#1056)

Stewie, the CRF head has a different head than the TRX, so those numbers might be off a tad.

 

[airmobile101]

any info on the Web 943/921??

Thats the cam I run

 

[OTMTRX]

Stewie, the CRF head has a different head than the TRX, so those numbers might be off a tad.

Yeh i know.. read the top bit.. just an illustration...

Bloody kids lol!

 

[Sum670x]

Anyone ever come across a crf450 pro circuit cam in our quad motors? Previous owner of my 05 put the cam and matching valves and springs in with it. I know it pulls pretty well but I've always wondered what the actual numbers would say.

 

[grtrat1]

We need to find out what year 450r these specs are for.....