megacycle cam ?

[turbocamino]

Hello, Last season i geared my 89 a bit taller (18/38) and i like it alot...that said, i have lost some low end pull and am trying to get some back.        I have it jetted well and added a few degrees timing but its time for some maintenance anyway as i can see oil getting past a few guides and at 20k its time for a valve job as well. Im planning a valve job,springs,seals and some bowl/port work and deck the head a couple(?) thousands to raise compression some ...and a intake cam too.  A board member here,suggested a megacylce cam #268-00.  Im just looking for some low end pull without much, if any, mid range loss.  I rarely see 9000rpm so if some steam is lost there...so be it. I surely dont want to lose any driveability. Anyone have knowledge of this cam and its lift/duration and overall performance? Any other suggestions welcomed as well.  Thanks.

[FJ1100mjk]

Not trying to be a wise *ss or anything like that, but have you contacted the people at Megacycle and posed your questions to them?

I know that direct feedback from owners who have the cams in their bikes can provide good answers, but I got to think that as long as Megacycle has been around, that they're a great source for the answers you seek too.

Just my 2 cents.

Marty

[Terry in Australia]

I don't know what sort of range of cams Megacycle make for FJ's, but I've had some experience with them with SOHC Honda 750's in the past, and the thing to keep in mind with cams is that "Bigger aint better" unless you're going to race your bike.

I replaced my 125/75 race cam with a mild street cam with only a couple more mm of lift and a little more duration, and my old CB has gone from being gutless at "normal" speeds, to everything I wanted when I originally built that engine 7 years ago, torquey down low with lots of mid range grunt.

Let us know what you end up with, and how well it works in "real world" situations, once I get my FJ back on the road I'm sure I'll want to improve it's performance too. Cheers, Terry.

[Flynt]

I have megacycle cams and Randy (RPM) can tell you how hard it is to get info from them.  When I picked mine there was really no "more torque" option other than to get adjustable timing on the sprockets.  Then you tune to taste.  Mine are as shipped and dyno shows low end same to 5000 RPM, then things start to get interesting... I do have a modified engine however.

You should try calling them directly, but honestly they didn't offer much that would meet your needs, at least as described.  Getting much more torque probably requires more cc's on an FJ...

Randy?

[Bozo]

I have the same cams you are referring to, when they are in the bike the mid range is equal to the standard - I have 1200 wiseco with a slight lift in compression, ported, and a decent pipe, after 6,000 rpm it goes like an ape to around +10,000rpm. You do have to degree the cams or you are just wasting your time (they won't run well). I'm having a few issues with mine which Randy is helping me sort out. I suggest if you buy these cams, buy through Randy so if there are any issues he bends over backwards to help.
If all goes well they are worth having to a point where I was prepared not to refit the standard cams back while I'm getting my cams checked out.
P.S don't forget the valve springs, they state that standard are ok but I personally would not use standard springs.

[JMR]

I have the same cams you are referring to, when they are in the bike the mid range is equal to the standard - I have 1200 wiseco with a slight lift in compression, ported, and a decent pipe, after 6,000 rpm it goes like an ape to around +10,000rpm. You do have to degree the cams or you are just wasting your time (they won't run well). I'm having a few issues with mine which Randy is helping me sort out. I suggest if you buy these cams, buy through Randy so if there are any issues he bends over backwards to help.
If all goes well they are worth having to a point where I was prepared not to refit the standard cams back while I'm getting my cams checked out.
P.S don't forget the valve springs, they state that standard are ok but I personally would not use standard springs.

Correct. I think there are far to many people that know nothing about cam timing.

[andyb]

Not to be a smartass, but why not just put the gearing back?  Presto, immediate increase in applied torque, job done.  It wasn't a big surprise that you lost some snap with the longer gears, right?

You can also change the timing on the stock cams too, though at the cost of some top end.

[JMR]

I have megacycle cams and Randy (RPM) can tell you how hard it is to get info from them.  When I picked mine there was really no "more torque" option other than to get adjustable timing on the sprockets.  Then you tune to taste.  Mine are as shipped and dyno shows low end same to 5000 RPM, then things start to get interesting... I do have a modified engine however.

You should try calling them directly, but honestly they didn't offer much that would meet your needs, at least as described.  Getting much more torque probably requires more cc's on an FJ...

Randy?

More compression and tighter squish will get you more torque and HP even at stock displacement. Or...go this route  http://thekneeslider.com/kawasaki-supercharger-patent-drawings/

[Dads_FJ]

Are XJR cams different?  I thought they were in that they offered more low end grunt.  Could source some from overseas...

[Flynt]

You do have to degree the cams...

Didn't mean to imply otherwise...  that's why I got the adjustment option. 

When Randy set them I think he put them at stock timing and FactoryPro left them there essentially (no significant adjustment they said) during the dyno tuning.  I described what I wanted power delivery wise (less sudden torque than it had post 1350cc build/pre-tune because I couldn't keep the front wheel down away from a stop, esp with Diane on the back, and progressive power increase over stock with improved top end) and they nailed it...  but I'm sure it could be made to deliver different characteristics with cam/timing/fueling.

Frank

[The General]

You do have to degree the cams...

When Randy set them I think he put them at stock timing and FactoryPro left them there essentially (no significant adjustment they said) during the dyno tuning.  I described what I wanted power delivery wise (less sudden torque than it had post 1350cc build/pre-tune because I couldn't keep the front wheel down away from a stop, ....
Frank

....Hang on....I`ve gotta swap hands....ahhhh....oh to have this problem! (I don`t smoke....but I think I need a cigarette!) 

[JMR]

Not to be a smartass, but why not just put the gearing back?  Presto, immediate increase in applied torque, job done.  It wasn't a big surprise that you lost some snap with the longer gears, right?

You can also change the timing on the stock cams too, though at the cost of some top end.

That is a great point. I missed that part.

[racerrad8]

Are XJR cams different?  I thought they were in that they offered more low end grunt.  Could source some from overseas...

Nope, the XJR cams are the same profile, that additional low end torque of the 1300 is the larger bore size.

Randy?

Frank?




I missed the question, just too dang busy moving...

What was the question?

Randy - RPM

[Flynt]

What was the question?

turbocamino was looking for torque...  I knew you'd know where it was.

Not sure where he went, so never mind.

Frank

[turbocamino]

  Thanks guys...just now had a chance to read all above..and digest, :good stuff. Regarding the tall gearing...its just a personal preference as i find my self at highway speed alot and like 3000 better than 4000..i want my cake and eat it too ,as they say and want some low end back. Always more than one way to get it done though.  My list of "dont wants" is longer that my list of wants...i dont want to lose gas milage..i dont want to make more heat..i dont want to lose ANY bottom end...i dont want to fart around with jetting all spring. I just did a major car engine project in my "turbocamino"  and need to keep this as simple as possible.   I got some good direction from you guys,as usual. I will digest all and plot a course. Thanks.