HOW TO: Vac Port / Throttle body Mod (Video) - Kawasaki Versys Forum
 
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post #1 of 8 (permalink) Old 04-14-2015, 03:21 AM Thread Starter
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HOW TO: Vac Port / Throttle body Mod (Video)

Hey everybody! Greetings from across the pond!

I recently ran a little DIY service on my fabulous mk1 Versys and I made a few videos while I was doing it.

For your viewing pleasure, here's the one where I add the little hose between the vacuum ports on the throttle body:

No Video

https://www.youtube.com/watch?v=GDillG5rswk


Please feel free to comment and throw any praise, criticism or abuse my way!

And be sure to subscribe to the channel, there's going to be a LOT more Versys based videos coming up!

Last edited by Andymancam; 04-14-2015 at 06:25 AM.
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post #2 of 8 (permalink) Old 04-14-2015, 10:11 AM
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Rubber grommets and plastic penises... There really is nothing more that can be asked for in a tech video. Great work, sir!

My only addition: When you have a port or something you may drop parts in to, stuff it with a rag or paper towel. Losing parts or bits in the engine problem solved.

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post #3 of 8 (permalink) Old 04-14-2015, 11:46 AM Thread Starter
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Originally Posted by Wulff81 View Post
Rubber grommets and plastic penises... There really is nothing more that can be asked for in a tech video. Great work, sir!

My only addition: When you have a port or something you may drop parts in to, stuff it with a rag or paper towel. Losing parts or bits in the engine problem solved.
Thanks! Top tip. Which I VERY nearly wish I had done this time, and WILL be doing next time!!
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post #4 of 8 (permalink) Old 04-14-2015, 12:24 PM
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What does the vac-port mod do?
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post #5 of 8 (permalink) Old 04-14-2015, 12:28 PM Thread Starter
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Originally Posted by waltermitty View Post
What does the vac-port mod do?
I don't really know the science behind why it does anything!

But it 'seems' to balance out the lumpy running and surging experienced by many at the low end of the rev range. It might be in my mind, but My V was running smoother after I did it.


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post #6 of 8 (permalink) Old 09-19-2016, 12:23 AM
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Has anyone tried this on a 2015+ 650? I was looking through the service manual, and saw that the "CAL, SEA-B1, TH and CN Models" seem to have the vacuum hose in place, with a third line coming off it and going to a "purge valve" connected to the EVAP system.

Last edited by zzzoren; 09-19-2016 at 12:27 AM.
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post #7 of 8 (permalink) Old 09-19-2016, 01:09 AM
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Good job, Andymancam! Diesel leak-off pipe is typically 1/8" (3.175mm) ID compared to stock 3mm ID IAP sensor hose. I used GoodYear 3/32" (2.38125mm) ID vacuum hose with which I also upgraded the IAP sensor's soft OEM hose... It should be 6" long, which would be shorter than yours.

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Originally Posted by zzzoren View Post
Has anyone tried this on a 2015+ 650? I was looking through the service manual, and saw that the "CAL, SEA-B1, TH and CN Models" seem to have the vacuum hose in place, with a third line coming off it and going to a "purge valve" connected to the EVAP system.
Your TB's are already coupled with the vacuum hose which is also T'd to EVAP system, so you can just leave it as is.

Last edited by invader; 09-19-2016 at 01:15 AM.
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post #8 of 8 (permalink) Old 09-19-2016, 01:40 AM
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Quote:
Originally Posted by invader View Post
Good job, Andymancam! Diesel leak-off pipe is typically 1/8" (3.175mm) ID compared to stock 3mm ID IAP sensor hose. I used GoodYear 3/32" (2.38125mm) ID vacuum hose with which I also upgraded the IAP sensor's soft OEM hose... It should be 6" long, which would be shorter than yours.



Your TB's are already coupled with the vacuum hose which is also T'd to EVAP system, so you can just leave it as is.
The Canadian model has the EVAP system?
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