cam spec.s

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niteowl
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cam spec.s

Postby niteowl » Tue Oct 12, 2010 12:38 pm

can someone post [or repost] the cam spec.s for the 650 ninja model? Thanks
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BRP
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Location: Southport, North Carolina

Re: cam spec.s

Postby BRP » Wed Oct 13, 2010 7:46 am

According to Invader , from the Versys forum :

Versys inlet cam lobes actually have less duration and lift than the 650R's... Versys inlet camshaft is however identical to 650R's exhaust camshaft.

Ninja 650R/ER6:
Inlet- open 31° BTDC................Exhaust- open 50° BBDC
close 61° ABDC........................close 30° ATDC
duration 272°..........................duration 260°
cam height 36.6 +/- 0.057 mm... cam height 35.9 +/- 0.057 mm

Versys:
Inlet- open 25° BTDC................Exhaust- open 47° BBDC
close 54° ABDC........................close 25° ATDC
duration 260°..........................duration 252°
cam height 35.9 +/- 0.057 mm... cam height 35.4 +/- 0.057 mm

I swear I measured them, and the Versys cam had more lift.
I no longer have any, so I can't prove it.
djrussell
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Re: cam spec.s

Postby djrussell » Wed Oct 13, 2010 9:27 am

the service manuals confirm that info
niteowl
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Re: cam spec.s

Postby niteowl » Wed Oct 13, 2010 12:32 pm

Thanks - I KNEW I saw it somewhere!
niteowl
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Re: cam spec.s

Postby niteowl » Wed Oct 13, 2010 2:19 pm

On that note-do these engines have a provison[slotted ajuster] for altering cam timing? Thanks, Jim
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BRP
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Location: Southport, North Carolina

Re: cam spec.s

Postby BRP » Wed Oct 13, 2010 4:51 pm

yes
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Addohm
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Re: cam spec.s

Postby Addohm » Thu Oct 14, 2010 2:46 pm

Kinda throws the whole versys cam swap out of the window. Perhaps the cam changed at some point, and an older cam is ideal for the swap?
djrussell
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Re: cam spec.s

Postby djrussell » Thu Oct 14, 2010 3:22 pm

i just went through all the fiche on ronayers.

all years of the versys have:
49118-0075
49118-0076

all years of the 650r and er-6n have:
49118-0042
49118-0072

so unless they changed the part without rolling the number, they've always been the same.
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BRP
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Re: cam spec.s

Postby BRP » Thu Oct 14, 2010 3:32 pm

Correct no change.
I have to wait until my engine builder get back into town.
He should still have Versys cams.
I know my riders liked the performance with 2 Versys cams
vs 2 650R's
Turbocharged650R
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Re: cam spec.s

Postby Turbocharged650R » Mon Oct 18, 2010 1:46 pm

As do I!!! Versys cams seem to do much better, and dyno shows. I have done several, and have my personal bike set up this way also.
TurboNosKawasaki
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Re: cam spec.s

Postby TurboNosKawasaki » Sat Oct 30, 2010 2:06 am

The Versys cams should have a shorter duration and lower lift seeing that it makes peak hp and torque 1000rpms lower than the 650R right?
CORNERS ARE MY WORST ENEMIES, I SPEND VERY LITTLE TIME IN IT
electjohn
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Location: North East Ohio

Re: cam spec.s

Postby electjohn » Sun Oct 31, 2010 7:12 am

They could have changed the center line for that effect
Warhound
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Re: cam spec.s

Postby Warhound » Wed Feb 13, 2013 9:36 pm

Any follow up on this?
4play
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Joined: Mon Feb 18, 2013 11:44 pm

Re: cam spec.s

Postby 4play » Tue Feb 19, 2013 1:17 pm

BRP wrote:According to Invader , from the Versys forum :

Versys inlet cam lobes actually have less duration and lift than the 650R's... Versys inlet camshaft is however identical to 650R's exhaust camshaft.

Ninja 650R/ER6:
Inlet- open 31° BTDC................Exhaust- open 50° BBDC
close 61° ABDC........................close 30° ATDC
duration 272°..........................duration 260°
cam height 36.6 +/- 0.057 mm... cam height 35.9 +/- 0.057 mm

Versys:
Inlet- open 25° BTDC................Exhaust- open 47° BBDC
close 54° ABDC........................close 25° ATDC
duration 260°..........................duration 252°
cam height 35.9 +/- 0.057 mm... cam height 35.4 +/- 0.057 mm

I swear I measured them, and the Versys cam had more lift.
I no longer have any, so I can't prove it.



So for midrange, replacing the 650R intake cam with the Versys intake is the same as two versys intake cams? correct?
4play
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Joined: Mon Feb 18, 2013 11:44 pm

Re: cam spec.s

Postby 4play » Sun Jun 23, 2013 6:13 pm

I'd really like some confirmation on this. I have a Versys intake cam & would love to move the torque down a bit for my offroad Ninja.


Thanks, Buddy
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Retro Rocketeer
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Location: Boise, ID

Re: cam spec.s

Postby Retro Rocketeer » Mon Jun 24, 2013 9:36 am

Its true. If you'd like earlier midrange, run the Versys cam. I raced with three configurations of Versys and Ninja cams. The Ninja intake will get you the most top end hp. Problem is, there's not enough compression in the Ninja to take full advantage of the stock cam. Versys cam combinations will get you the best corner launch. For HP track configurations, I ran a Ninja Ex cam in the intake (I had one with a couple thou. more lift) and a Versys In cam in the exhaust. For tight track configurations, (most of them), I ran two Versys In cams.

The SV's asked me how much HP I had. They were surprised when I'd tell them the most I'd ever dyno'd was 67hp at 4500ft. I was making less power, mine just came on earlier. By the time their power advantage made a difference, the next braking zone meant they couldn't take advantage of it.

I have a 2008 Versys and ride with a friend who occasionally will ride his 2007 Ninja instead of his Superhawk. The difference between the two 650s is very noticeable. The Versys actually feels more powerful on mountain roads because its power comes on stronger at 4000rpm.

More proof to the pudding is the latest generation of Ninja 650, they pretty much gave it a Versys head and cam combination.
4play
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Joined: Mon Feb 18, 2013 11:44 pm

Re: cam spec.s

Postby 4play » Mon Jun 24, 2013 10:16 am

Thanks! I love the motor, but for what I do I'll rarely use the top end. The improved low end would be nice.
In my case, I have one set of Versys cams, just swap the intakes out & leave the Ninja exhaust cam in place correct? I'm tearing it down to powder coat & paint, so I'd like to do it while the engine is out.

Image

Thanks again,



Buddy
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Retro Rocketeer
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Location: Boise, ID

Re: cam spec.s

Postby Retro Rocketeer » Tue Jun 25, 2013 9:30 am

Yep. You can do just a straight Intake for Intake swap. You can also measure it against your stock Ex cam and consider reversing the two. The stock sprockets are slotted, so you can take it even further and experiment with degreeing less overlap.
4play
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Re: cam spec.s

Postby 4play » Tue Jun 25, 2013 10:14 pm

TEverything I've read suggest the Versys intake & the 650R exhaust cam had the same lift & duration?

Last question, I don't plan any other performance mods, I'm even keeping the stock muffler. Would I need to remap?
I was not planning on getting atuner.

Thanks,
Buddy
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Retro Rocketeer
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Location: Boise, ID

Re: cam spec.s

Postby Retro Rocketeer » Wed Jun 26, 2013 9:23 am

Technically, the two cams are the "same". You could just drop it in. Understand, I was doing a LOT of tuning during my racing and wanted to know exact measurements on all the cam combinations I was trying.

Each combination I ran, I had a specific fuel map I would work with. My laptop was part of my tool kit. You can try running the bike without a fuel tuner, but I don't think it will work well. You might want to install a digital temp gauge to monitor your engine as a caution. A keen shopper should be able to score a PCIII for a good price nowadays.

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