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Old 02-01-2013, 04:59 PM   #16
Lc8grrr
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Quote:
Originally Posted by charlie264 View Post
I've got a feeling that the RC8 and S Duke velocity stacks are shorter than stock SE, seem to remember someone upgraded the Adv/SE for RC8 ones.

Might be worth a look,
I dont think they fit because the SE is on carbs not FI.
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Old 02-01-2013, 06:44 PM   #17
bikyto
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Quote:
Originally Posted by charlie264 View Post
I've got a feeling that the RC8 and S Duke velocity stacks are shorter than stock SE, seem to remember someone upgraded the Adv/SE for RC8 ones.

Might be worth a look,
Yes they are MUCH shorter. I would say half the height.
I had them on my 990. But they vibrate out as they do not lock in properly. So beware and modify the locking aspect or your whole airbox will be loose......
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Old 02-02-2013, 11:42 AM   #18
buzybraza OP
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Quote:
Originally Posted by charlie264 View Post
I've got a feeling that the RC8 and S Duke velocity stacks are shorter than stock SE, seem to remember someone upgraded the Adv/SE for RC8 ones.

Might be worth a look,
I thought that too, but was told the fuel injected stacks don't go into the carbed version. I didn't check it for myself, has anyone out there????
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Old 02-02-2013, 12:02 PM   #19
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Quote:
Originally Posted by bikyto View Post
Yes they are MUCH shorter. I would say half the height.
I had them on my 990. But they vibrate out as they do not lock in properly. So beware and modify the locking aspect or your whole airbox will be loose......
Thanks, I will stay put and leave it as in my original post!
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Old 02-02-2013, 02:40 PM   #20
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By Sakurama´s thread i dare to say that
Longer stacks : More grunt
Shorter stacks: More topend

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Old 02-02-2013, 06:11 PM   #21
dogsslober
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Quote:
Originally Posted by LocuL View Post
By Sakurama´s thread i dare to say that
Longer stacks : More grunt
Shorter stacks: More topend

Thats not that daring
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Old 02-02-2013, 06:24 PM   #22
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Originally Posted by LocuL View Post
By Sakurama´s thread i dare to say that
Longer stacks : More grunt
Shorter stacks: More topend
So because I only cut about half the stacks I get more grunt and more top end!
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Old 02-02-2013, 11:18 PM   #23
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Based on my working on sprints and midgets, the key thing is the stacks move the power band, long stacks make the power peak at lower RPM shorter ones at higher RPM.. Smaller diameter stacks raise torque, larger diameter stacks increase horse power at higher pm (To a point its not magic...) You have to balance runner length against diameter.

Typically you put the engine on the dyno and test say 4 sets of stacks ,, Map their performance, then you use the set that keep the motor on the power band at the RPM's the track demands of the car to keep it at speed.

Dave
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Old 02-03-2013, 12:55 AM   #24
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Here is something that's close to the same idea..
this is a standard 32/36 Webber on a Nissan 1600.

http://www.flickr.com/photos/3362913...in/photostream

http://www.flickr.com/photos/3362913...in/photostream

http://www.flickr.com/photos/3362913...in/photostream

Fairly stock motor with headers, NISMO camshaft.

The engine was only making consistent power between 4000 and 5000 with the webber alone.
The velocity stacks lifted the whole power band and pumped the engine up nicely from 2500 to 4000, netting a really race-able power band from about 3000 to 5500 rpm.

I included the filter pics for reference since its similar to the rottweiler.

Cheers.

Dave
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Old 02-04-2013, 03:17 AM   #25
Mosseltje
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Quote:
Originally Posted by KarimADV View Post
What about if you find some kind of water? I mean a river crossing or a offroad dirt?

Won't you kill your engine with this setup?
Short Answer: Yes

Long answer: Below a movie about my SE through the woods after heavy rain.
My SE has the MotoHooligan airbox (and a very old and weak battery.)
At 6:14 minutes the puddle is too deep and it killed the engine.

https://www.youtube.com/watch?v=goJWXDOtRQc
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Old 02-04-2013, 07:39 AM   #26
ata
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that frame looks too clean

seems never suffered too much mud, or you are just the number one cleaning it



good work anyway and agree about the amazing performance without air box, looks like the bike´s in a hurry all the time, but here where I ride, ain´t an option
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ata screwed with this post 02-04-2013 at 11:33 AM
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