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Hey everone. It's been awhile since my last post, so here I go. As some of you out there may know I have a 636 with a MICRON!!! whhooo! sorry kind of an inside joke. any way, as well as some other accesories. I've been riding for some years now and as of this year on my new 636 I have found myself pushing the limits too many times on the street roads. So like any avid sport bike enthusiast, I'm gonna " Take it to the Track ". That being said, I'm very seriously going to put in some track time and lessons, as well as to try and become a better rider and possibly try to qualify at a race some day. This off season ( I live in Mn so I got 6 months of winter ) I'm gonna make some serious mods to my 636. New gaskets, cams, springs, airfilter, power commander, and VELOCITY STACKS. So, I found out what they are and where they go, but what do the do as far performance? Accelleration? Top end power? Smoothness and responsiveness? What? And the other thing is what are the differences in the different sizes that the come in? Should they all be short, should they all be tall, 1 & 4 short and 2 & 3 tall, vice versa, or doesn't it matter.

That is all, I appreciate you reading though this novel. Please let me know what to do and or who to talk to about these.

P.S. Kawai has some for sale here > http://www.buykawasaki.com/Default....ProductCatalog/default.asp?intCatalogID=1http
and Factory Pro has some Billet stacks here > http://www.factorypro.com/products/vstacks.html
why the huge price difference? do they really produce a difference of that much power?
 

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looks like the same price. $50 each from factory X 4 = $200 and the factory units are $200 for a set. usually the center two are always longer, I don' know why. longer usually gives more top end while shorter gives more low/mid range power or so I'm told.
 

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Leave the velo stacks for race engines and spend your money on suspension and brakes if you want to go fast.



BTW, the long stacks are for the low-end; short ones for top-end. Neither of these will have as much effect on your bike as quality, properly set up suspension.
 

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kawiben said:
Hey everone. It's been awhile since my last post, so here I go. As some of you out there may know I have a 636 with a MICRON!!! whhooo! sorry kind of an inside joke. any way, as well as some other accesories. I've been riding for some years now and as of this year on my new 636 I have found myself pushing the limits too many times on the street roads. So like any avid sport bike enthusiast, I'm gonna " Take it to the Track ". That being said, I'm very seriously going to put in some track time and lessons, as well as to try and become a better rider and possibly try to qualify at a race some day. This off season ( I live in Mn so I got 6 months of winter ) I'm gonna make some serious mods to my 636. New gaskets, cams, springs, airfilter, power commander, and VELOCITY STACKS. So, I found out what they are and where they go, but what do the do as far performance? Accelleration? Top end power? Smoothness and responsiveness? What? And the other thing is what are the differences in the different sizes that the come in? Should they all be short, should they all be tall, 1 & 4 short and 2 & 3 tall, vice versa, or doesn't it matter.

That is all, I appreciate you reading though this novel. Please let me know what to do and or who to talk to about these.

P.S. Kawai has some for sale here > http://www.buykawasaki.com/Default....ProductCatalog/default.asp?intCatalogID=1http
and Factory Pro has some Billet stacks here > http://www.factorypro.com/products/vstacks.html
why the huge price difference? do they really produce a difference of that much power?
Hi - Just saw this post -
If you want to ride fast - good, well tuned suspension will allow you to go faster than more power - so - if you have a budget, do suspension first.

As far as the stacks, our V Stacks are designed for a stock engine with stock cams and the lengths and that we provide for the 636 work better in that case -
We do make 15mm, 21mm, 25mm, 30mm, 35mm, 45mm and 60mm lengths - so - we have a wide selection for a tuner to use to dial in a modified engine.

The Kaw "kit" stacks are better than stock, as far as power on a stock cammed engine - they are probably designed for an engine equipped with the Kaw "kit" cams (at least that's the logical assumption), but, the stack set that we sell is specifically for a bike with stock cams and make a couple more hp than they do -
The Roadracing World ZX6rr bike that made 114+ DJHP on pump gas had our stacks on it and tuning with an EC997 dyno, a kit ECU and no power commander.

As far as stacks always being longer on the inside - not always! - The carbureted R6 worked better with longer stacks on the outside, for example.

I think that the 636 worked best with 15mm outside and 21mm inside (WAY different than the Kawasaki kit stacks!) and that's what we normally sell to Kaw guys - no lowend or midrange loss and better topend -

If you have any more questions or want a set, you can give us a call -

Thanks!!!!

Marc
 
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