megacycle cams

[carbonfiber440]

I had recently heard of a megacycle cam, from megacycle. i was wondering if anyone has ever heard of these cams before. also was wonderin how they compare to a hot cam stage2. cause both are availble locally and am interested in gettin one of the two.

[chad502ex]

Originally posted by carbonfiber440
I had recently heard of a megacycle cam, from megacycle. i was wondering if anyone has ever heard of these cams before. also was wonderin how they compare to a hot cam stage2. cause both are availble locally and am interested in gettin one of the two.

i use the megacycle X2 cam for my 530R

love it. the cam timing is similiar to HRC cam only bigger max lift.

[carbonfiber440]

chad502ex, what would you recomend for motocross and peak power a hot cam or the megacycle?
thanks

[chad502ex]

Originally posted by carbonfiber440
chad502ex, what would you recomend for motocross and peak power a hot cam or the megacycle?
thanks

for mx >> hcs2

for peak power drop-in cam >>> hrc

for peak power >>>> mega x3

[cals400ex]

doesn't megacycle make a cam that revs higher than the hrc and the stage 2 that doesn't require hardened rocker?

[K_Fulk]

http://www.megacyclecams.com/catalog/catalog.pdf
Page 28 for the 400ex

I used the x2 on my 440. Its comparable to the web 479 cam
All of megacycles 400ex cams require hardweld rockers.

[carbonfiber440]

cool thanks guys on the info. think i might go with the megacycle cam. does any one have any info on the price on how much it costs to get the rockers hardend?

[cals400ex]

i was thinking billet cams didn't require hardened rockers but maybe that is the opposite.

[cals400ex]

i really don't understand what all the numbers mean. i hear all the time that higher lift is nice for low to mid range motors and and more duration will give a higher revving bike. also, how do you compare cams measured at .050" vs .040"?

for example,

WEB CAMS 479 .378 .378 250 250 @.050
HOT CAMS STAGE 2 .346 .346 254 254 @.050
WEB 450/451* .350 .345 256 256 @.050
WEB CAMS463/9i .385 .370 272 270 @.050
mega X2 .378 .378 254 254 @.040
mega X6 .402 .385 270 262 @.040


basically, i am looking for a higher revving cam than the stage 2 hotcam and my TC mx grind cam. it feels like my sparks pipe needs higher rpms but the cam won't quite allow it. i am not sure what to think.....

[K_Fulk]

Originally posted by cals400ex
i was thinking billet cams didn't require hardened rockers but maybe that is the opposite.

There billet cores but they have been hardfaced.

[duke416ex]

Ok, I don't do really well with what the numbers mean, I understand in and ex lift, but I'm not real clear on duration, can someone explain to me which cams give better low to mid, and which are better for revving. That megacycle has a lot of lift, like the web, they will need hardened rockers, right?

[cals400ex]

Originally posted by K_Fulk
There billet cores but they have been hardfaced.


i just realized that now after reading it on their website. i still don't know how to compare the numbers though.

[K_Fulk]

DURATION:
The lenth of time that the valve is held off the seat by the cam. This is measured by the degrees that the crankshaft rotates. More degrees of duration will make the engine operate in a higher rpm range.

DURATION AT .050":
The distance measured in degrees of crankshaft rotation from when the valve is open .050" far until it is .050" from closing.

Valve lift is how much the cam opens.

Just a copy and paste off of web cams website, there is quite a bit of free information on there, if you want to read it. There is obviously a lot more to getting the right cam then getiing the one with the most duration and lift. Someone like wilkin or Laz can explain it a lot better then I can.

[oriclez]

There are a lot of factorys also though. The more lift you have the more power you get, but it will change where it comes in ect. Don't worry about making the most power you can. Have the site match up with what type of riding you do. I should write a cam 101 guide. Acutually on the other hand jds12304(sorry I really killed your name), or someone more knowledgeable like him should make a 101 guide to cams, and get it stickied.

[duke416ex]

I know there is a lot more to cams than lift, and the duration has a lot to do with the power also. I just wanted a generization about duration and lift combos.

[oriclez]

Heres a quick overview:
Duration is how long the valves stay open at the crankshaft degrees. More duration helps build horsepower but moves the power ranges up in rpm. Lift is how much the valves lift and more lift is more power. Lobe seperation is the ammount of degrees betweem max lift of the exhaust and intake lobes.

This is basic, I will add more on later.

[cals400ex]

i remember people discussing the web 479 vs the 450/451. i heard that the 450/451 make a few more horsepower on the dyno but the 479 people liked more. how is this possible? did the 479 just make more low end power?

[K_Fulk]

Are you think ing of the 460 stroker thread?

The 450/451 cam is more suited to a stroker or someone looking for bottom end power. More duration then the 479 duration less valve lift.

The 479 Revs quicker has more top end power, still has pretty good bottom end. Shorter duration higher valve lift.

The 463/9I Is more of a flat track, top end screamer cam. Lots of duration and valve lift. Havent used one of these to see how they rev.

[cals400ex]

Originally posted by K_Fulk
Are you think ing of the 460 stroker thread?

The 450/451 cam is more suited to a stroker or someone looking for bottom end power. More duration then the 479 duration less valve lift.

The 479 Revs quicker has more top end power, still has pretty good bottom end. Shorter duration higher valve lift.

The 463/9I Is more of a flat track, top end screamer cam. Lots of duration and valve lift. Havent used one of these to see how they rev.


i don't remember where i was reading at. i thought since the 450/451 had higher duration it would rev higher?

[cals400ex]

here are some specs on cams:

WEB CAMS 479 .378 .378 250 250 @.050
HOT CAMS STAGE 3 .346 .346 254 254 @.050
WEB 450/451* .350 .345 256 256 @.050
WEB CAMS463/9i .385 .370 272 270 @.050
mega X2 .378 .378 254 254 @.040
mega X6 .402 .385 270 262 @.040



i have a feeling that some of these will be too much for the average 416. also, all of these require hardened rockers and heavy duty valve springs (besides the hotcam).

[carbonfiber440]

thanks for the replies, i think that i am gonna go with teh hot cam 3 due to the fact that i dont have to harden the rockers.

[Rico]

Originally posted by carbonfiber440
thanks for the replies, i think that i am gonna go with teh hot cam 3 due to the fact that i dont have to harden the rockers.

YOu might want to invest in a HD rod for that 12.1 piston....:eek:

[cals400ex]

Originally posted by Rico
YOu might want to invest in a HD rod for that 12.1 piston....:eek:


ahh, no need for that. i prefer the plastic rods to save weight.