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Offline Duarte

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Upgrade engine performance
« on: Oct 16, 2020, 09:31 PM »
Hi

I been looking into what can I do to upgrade the engine for better. I was reading here in the forum a topic from 2007 but didnít say much in the end.
I asked before elsewhere and someone told me that they installed 2 intake cams from the ninja 2006 and was working great on their versys.

Does anyone here tryed something crazy and it worked. I read I think here that there is a high compression piston from wiseco that fits Versys engine....anyone?

I already remmaped (before you go there)

Anyone can give me some lights.

Offline Gustavo

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Re: Upgrade engine performance
« Reply #1 on: Oct 16, 2020, 10:21 PM »
It would be helpful if you actually explained what you already did.  You said you remapped it.  What exhaust/intake mods are you running?

I have my doubts about that Ninja intake cams story.  A Versys with two intake cams (Ninja or Versys sourced) wouldn't run at all, let alone better.  Maybe they switched to Ninja cams (both intake and exhaust), which would make more sense and has been done before.  The thing is that after all that work, the gains are minor.  In order to get the gains you read about (like those that are used by those racing Ninja 650s) a lot of work is needed. 

Here are some parts, shipping may be free if you buy enough, but installation is not included:
https://www.spearsenterprises.com/product-category/kawasaki-er-ex650/


There is a good reason for the joke that asks  -  How do you make a small fortune?


You start with a big one and go racing...      :008:



If I didn't have personal experience with that, I would have thought it was funny too...    :015:


Gustavo





Always yield to temptation, it may not pass your way again - Ken Morton

Offline Duarte

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Re: Upgrade engine performance
« Reply #2 on: Oct 16, 2020, 10:30 PM »
What the guy told me was that he instaled 2 intake cams on the versys engine and asked the remap guy to put the map of the ninja on his ecu. Some adjusts on that and is running

Thanks for the link.

I have:
Dna filter
Black widow downpipes
Ixil hyperflow
Remap

Offline Darsey

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Re: Upgrade engine performance
« Reply #3 on: Oct 27, 2020, 05:46 PM »
You could ring Ryan Farquhar in Northern Ireland motorcycle racer tt winner as he has a race team and uses this same engine.
Ye must be born again

Offline Maverick

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Re: Upgrade engine performance
« Reply #4 on: Oct 27, 2020, 07:40 PM »
*Originally Posted by Duarte [+]
What the guy told me was that he instaled 2 intake cams on the versys engine and asked the remap guy to put the map of the ninja on his ecu. Some adjusts on that and is running

Thanks for the link.

I have:
Dna filter
Black widow downpipes
Ixil hyperflow
Remap

Like Gustavo said you put 2 intake cams in ANY engine you won't get it started let alone run better. You need an intake and a exhaust cam.

Offline Duarte

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Re: Upgrade engine performance
« Reply #5 on: Oct 31, 2020, 04:36 AM »


Soooo....the guy that TOLD Me just came public tonight on a facebook post.
Check your numbers guys because he isnít lieing

Offline anderson

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Re: Upgrade engine performance
« Reply #6 on: Oct 31, 2020, 11:29 AM »
Each to their own but I would save some cash and just put hooligan bars on a ninja with a displacement of my choice  😉
It is easier to ask for forgiveness than permission.

Offline Gustavo

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Re: Upgrade engine performance
« Reply #7 on: Oct 31, 2020, 03:39 PM »
No, he is not lying.  I thought about this after you posted that and I think I know what he is doing. 

Surprisingly, both are true.  What I said above, if you install two inlet cams based on their original orientation, the bike won't run at all is true, because the exhaust valves will not open at the right timing.  But, it's a 180 deg parallel twin, so the cams are really the same overall shape.  That's why this works on this particular engine configuration.  What you have to do is install the cam that goes over the exhaust valves in the correct timing position, so that it opens the valves at the correct time, ignoring the factory markings. 




You want to make sure you set up the timing correctly, because you could damage the valves/pistons if they are off. 

The Ninja 650 cams are taller and have a longer duration, so swapping the cams gives you better breathing at the high end.  On both the Versys and Ninja, the intake cam is setup to have a longer duration than the exhaust.  So when using that two intake cam solution, at high RPM, this gives you better scavenging and better high end output.  But, at low RPM this results in lower cylinder pressure and lower output and torque.  Seems like a good solution for someone who is racing and is interested in the top end power output more than everyday drive-ability and performance at road speed conditions.

Gustavo

Always yield to temptation, it may not pass your way again - Ken Morton

Offline Duarte

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Re: Upgrade engine performance
« Reply #8 on: Oct 31, 2020, 03:57 PM »
Ok, so how much this mod would influence on the versys for Touring as most of the times is montains where you donít use top end?
And how much this influence the mot in uk as some centers already have the co2 emissions machine?