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Old 01-06-2008, 07:05 PM   #1
positionsize OP
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Location: Arizona, Florida and Philippines
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Staintune slip-on for High Flow 640a

Greetings Everyone,

I just received my Staintune slip on exhaust for my 04 640a but I have not installed it yet.

I have already read all the 640 LC4 setup threads.

However, I would like to hear some specific feedback from those with Staintune slip on exhausts (not full systems)
and 2003 and above High Flow 640a's as to what other mods you made with this exhaust on and why.


These are the basic setup questions I have:
1)What year and model is you bike
2)db eater in or out? ( i will most likley run mine without the db eater)
3)side airbox cover mod or snorkel removed?
4)needle clip height.
5)main jet size.
6)Do you notice any difference in performance with the db eater in or out?
7)Did you make any other changes than the ones I have mentioned?
8)Do you have any dyno test info on your final set up?

Thanks


Edit=added a question

positionsize screwed with this post 01-06-2008 at 07:29 PM
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Old 01-07-2008, 11:45 PM   #2
Dotbond
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Quote:
Originally Posted by Ned H
















Hi Positionsize,
Can't help you reg. the Staintune.
Glad you got the Toothpick problem sorted out.
I believe we've passed each other on the road, me on my 04 Adv & my riding buddy on his 1150gs coming down from Tagaytay.
I also own an XR200 - SMALL WORLD!!
Ned
PS: what the heck am I missing??
I've tried editing this 4-5 times & still can't get it to come out at the top.
Help!!













Practice my young padawan.
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Old 01-08-2008, 12:18 AM   #3
Ned H
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Hey Dotbond
After 20 tries, I went & deleted the text only to see your reply & in a strange way, undeleted my reply.
Practice it is I suppose, will see how this one comes out. Cheers


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Old 01-08-2008, 12:19 AM   #4
Ned H
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It Worked!!

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Old 01-08-2008, 09:51 AM   #5
GodSilla
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Quote:
Originally Posted by positionsize
Greetings Everyone,

I just received my Staintune slip on exhaust for my 04 640a but I have not installed it yet.

I have already read all the 640 LC4 setup threads.

However, I would like to hear some specific feedback from those with Staintune slip on exhausts (not full systems)
and 2003 and above High Flow 640a's as to what other mods you made with this exhaust on and why.


These are the basic setup questions I have:
1)What year and model is you bike
2003 640 Adventure
2)db eater in or out? ( i will most likley run mine without the db eater)
In
3)side airbox cover mod or snorkel removed?
Snorkel
4)needle clip height.
Dunno
5)main jet size.
Dunno
6)Do you notice any difference in performance with the db eater in or out?
Dunno. Haven't tried this one yet. But from previous experiments with my other staintune equiped bikes I'd say YES.
7)Did you make any other changes than the ones I have mentioned?
Dunno.
8)Do you have any dyno test info on your final set up?
No.

Qualifier: I bought the bike already piped and rejetted basically along the lines found on this site.
But the Staintune is goodliness personified.

Thanks


Edit=added a question
Cheers.
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Old 01-08-2008, 02:33 PM   #6
desmonc
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Quote:
Originally Posted by positionsize
Greetings Everyone,
Quote:
Originally Posted by positionsize

I just received my Staintune slip on exhaust for my 04 640a but I have not installed it yet.

I have already read all the 640 LC4 setup threads.

However, I would like to hear some specific feedback from those with Staintune slip on exhausts (not full systems)
and 2003 and above High Flow 640a's as to what other mods you made with this exhaust on and why.


These are the basic setup questions I have:
1)What year and model is you bike
-----2005
2)db eater in or out? ( i will most likley run mine without the db eater)
-----In, too noisy out
3)side airbox cover mod or snorkel removed?
-----Snorkle removed, side airbox cover - no mod
4)needle clip height.
-----4th notch from the top
5)main jet size.
-----160
6)Do you notice any difference in performance with the db eater in or out?
-----Did not notice any difference but I did not do much testing with the db eater out.
7)Did you make any other changes than the ones I have mentioned?
-----Pilot air jet reduced to 1.1, this makes a big difference
8)Do you have any dyno test info on your final set up?
----No, seat of pants only


Thanks

Edit=added a question


My experiences with BST40 mods and Staintune are here...

http://www.advrider.com/forums/showpost.php?p=1449461&postcount=36
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desmonc screwed with this post 01-10-2008 at 07:25 PM
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Old 01-09-2008, 11:50 PM   #7
positionsize OP
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Thanks desmonc for the reply and the link. It is exactly what I needed.
I had read your post in that thread before but I think at the time I was
not yet looking at Staintune. All very helpful info in you post!


So far this is my plan. I am doing the same as you with a few exceptions.

2004 640a
Staintune Slip-on
Needle clip height=4th notch from the top
Main jet size 160

I already have the KTM race side airbox part here so I will install that instead of pulling the snorkel.

I probably wont reduced the Pilot air jet to 1.1. I do have one on hand but right now, I don’t want to pull the carb out unless I absolutely need to. I am little bit fuzzy on this one. You wrote that it made a big difference, but In reading Creeper's LC4 Setup Thread he mentions that he had "found no improvement by increasing the fuel or decreasing the air jet size" on the HighFlows. So before reducing the air jet, I will see if I am able to achive a proper idle mixture with the stock jet. Perhaps you could elaborate about you findings?

Lastly, I like the fact that Staintune is a bit noisy with the db eater out. Here in Philippines noisy is good! Motorcycle noise abatement is a non-issue here. No tree huggers allowed We have too many stray dogs and goats roaming and sleeping on the middle of the roads.(mostly an night but in the daytime too) Also, when school lets out, the children always play way too close if not directly in the main road. So for me, if they all hear me coming, it is far better for safety
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Old 01-10-2008, 06:00 AM   #8
ChrisC
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And while you guys are at it, how about killing all these funky font colors. I think I'm going blind...
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Old 01-10-2008, 07:02 AM   #9
alpiv
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Quote:
Originally Posted by ChrisC
And while you guys are at it, how about killing all these funky font colors. I think I'm going blind...
ChrisC stop the complaining and enjoy.

BTW, that is not why your going blind.
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Old 01-10-2008, 08:27 AM   #10
meat popsicle
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No, no, no that kills baby chickens...
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Old 01-10-2008, 09:08 AM   #11
ChrisC
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Old 01-10-2008, 07:47 PM   #12
desmonc
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Quote:
Originally Posted by positionsize
Thanks desmonc for the reply and the link. It is exactly what I needed.

I probably wont reduced the Pilot air jet to 1.1. I do have one on hand but right now, I don’t want to pull the carb out unless I absolutely need to. I am little bit fuzzy on this one. You wrote that it made a big difference, but In reading Creeper's LC4 Setup Thread he mentions that he had "found no improvement by increasing the fuel or decreasing the air jet size" on the HighFlows. So before reducing the air jet, I will see if I am able to achive a proper idle mixture with the stock jet. Perhaps you could elaborate about you findings?

A significant criticism of the 640a is that it does not run well at low rpm or below 4000rpm.
The idle circuit plays a part in controlling the air/fuel mixture at low engine rpm.

Before decreasing the Pilot air jet size my idle mixture screw was turned all the way out (3.5 turns) just to get the bike to idle properly with the Staintune muffler.
After changing the Pilot Air jet the mixture screw is back to the recommended 2.25 turns which leads me to believe that the idle mixture needed to be richer (at sea level anyway).
Sommer KTM and Flanny's guide both recommend this change.
You could increase the size of the Pilot fuel jet which according to the experiences of many other riders has the same effect. This jet is located next to the main jet in the float bowl and with some care you may be able to replace it without removing the carb. The part No. for this jet is in my post.
Have a go at getting the carb out, once you get started you will work it out.
It makes changing the jets a lot easier and you get to have a good look inside.
Have fun.
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Old 04-27-2009, 10:33 PM   #13
meat popsicle
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I might need a quieter can, and I would rather make a sparky than repack so... I am wondering if anyone knows where the posts went about the fella who fitted a Staintune header to his hi-flow LC4. Not supposed to work, but I want to clear this bug from my head before I decide WTF to do.

Maybe the bigger bore headers don't really matter for me, my setup, or the can with dB insert installed - but again

CBT still has 'em I guess:
http://www.cbtimports.com/staintune/stntnktmapps.htm
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Old 06-04-2009, 08:24 AM   #14
Dave Dave
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Wink Fmf Q

I have a question. If the only difference with the staintune and other cans is the stainless packing, why not get one that you like and just re-pack yourself with about $10.00 worth of stainless or bronze steel wool. The bronze would actually be better IMO but I might be mistaken. You can also go to a local machine shop and ask them for the machining curls from some stainless when they do that type of work. It will be fairly course and should stand up to the heat well. It's cheap as well!
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Old 06-04-2009, 08:40 AM   #15
NICO
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Quote:
Originally Posted by Dave Dave
I have a question. If the only difference with the staintune and other cans is the stainless packing, why not get one that you like and just re-pack yourself with about $10.00 worth of stainless or bronze steel wool. The bronze would actually be better IMO but I might be mistaken. You can also go to a local machine shop and ask them for the machining curls from some stainless when they do that type of work. It will be fairly course and should stand up to the heat well. It's cheap as well!
Damn n00bs and their logical thinking.

Assimilate now, or be drawn and quartered!











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