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Old 11-09-2013, 12:52 PM   #8326
meat popsicle
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Location: Circumlocution Office of Little Dorrit
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Quote:
Originally Posted by gunnerbuck View Post
The Dual outlet pump is not the same inside as the oem pump... The oem has a spring valve inside as to where the 2 outlet pump does not... I believe the 2 outlet pump puts out more pressure and will overwhelm the float valve in the carb... I believe you could make it work if you ran one pump outlet into the carb and the other as a bypass back into the tank by T'ing it into the crossover line...
Still, shouldn't the float needle seat and seal regardless of the fuel pressure? More fuel pressure would just mean more closing pressure on the float valve.

You're probably right, but it might not hurt to try a new float needle just in case the current one is worn.

http://www.advrider.com/forums/showthread.php?t=347184
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Old 11-09-2013, 02:47 PM   #8327
supercoyote
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Anyone know if this exhaust would work as a replacement for the OEM supertrapp?
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Old 11-10-2013, 05:51 AM   #8328
meat popsicle
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Originally Posted by supercoyote View Post
Anyone know if this exhaust would work as a replacement for the OEM supertrapp?
You should check the Part Number in the online parts retailer's system and see if it works with your bike, or call them and ask, but "racing" means loud usually, so don't expect it to be pleasant. I had a racing muffler for too many years, but when a good deal on a Staintune popped up I JUMPED on it.

Now with adequate back-pressure the engine probably breathes properly - remember the airbox/carb and the exhaust balance one another - my bike seems to be running much better and I got almost 48mpg on the last trip.

I'd throw eliminating the dreaded BST-bog in the list of amazing benefits of having a quieter pipe but people need to know that the bog is carb maintenance related, and once you go quiet - no more augmenting to cover up any male insecurities... you never go back.
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Old 11-10-2013, 06:35 AM   #8329
gunnerbuck
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Quote:
Originally Posted by supercoyote View Post
Anyone know if this exhaust would work as a replacement for the OEM supertrapp?
The muffler pictured is for a right side exhaust, the 640 exits on the left...

You could make it work with some welding fabrication to get it to tie into the slip on part of the supertrapp... This would mean destroying the stock pipe giving you no spare... You would be better off to buy the SXC muffler that is being offered here for a slip on fit:http://advrider.com/forums/showthread.php?t=932553
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Old 11-10-2013, 12:12 PM   #8330
Boon Booni
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Quote:
Originally Posted by meat popsicle View Post
You should check the Part Number in the online parts retailer's system and see if it works with your bike, or call them and ask, but "racing" means loud usually, so don't expect it to be pleasant. I had a racing muffler for too many years, but when a good deal on a Staintune popped up I JUMPED on it.

Now with adequate back-pressure the engine probably breathes properly - remember the airbox/carb and the exhaust balance one another - my bike seems to be running much better and I got almost 48mpg on the last trip.

I'd throw eliminating the dreaded BST-bog in the list of amazing benefits of having a quieter pipe but people need to know that the bog is carb maintenance related, and once you go quiet - no more augmenting to cover up any male insecurities... you never go back.
So, what is your final airbox configuration with the staintune?
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Old 11-10-2013, 02:26 PM   #8331
meat popsicle
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Originally Posted by Boon Booni View Post
So, what is your final airbox configuration with the staintune?
Creeper's v.1 custom side airbox cover, which basically has the same opening as the KTM part. Snorkle in place as recommended by Sommer.

BST40 has the stock pilot, stock needle jet, and a 160 main (I believe). I ride mostly at or about MSL, but haven't found any problems climbing to 10,000ft in the recent past without adjustments.

Pipe is KTM stock; can is Staintune's oval.
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Old 11-10-2013, 04:30 PM   #8332
mgorman
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Originally Posted by supercoyote View Post
Anyone know if this exhaust would work as a replacement for the OEM supertrapp?
As mentioned, it is the wrong side, but if it is marked spark arrestor on the back side, it will be fairly quiet. That style is what has come on the thumpers for the past 6 years, with or without a spark arrestor pending model. I just put one from a W model with an arrester on my 350XCF and it cut the noise down significantly over the stocker without the arrestor.

The bad part for you will be the tab locations, they'd be outboard on the left.
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Old 11-10-2013, 07:37 PM   #8333
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Baja California
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Old 11-11-2013, 04:44 PM   #8334
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Photobucket Pictures, Images and Photos

Baja California
Where in the Baja?

b
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Old 11-11-2013, 05:11 PM   #8335
Hurley959
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Has anyone come up with the size of a proper replacement O-ring for the hydraulic slave cylinder? Mine is leaking down and I imagine it's the culprit.
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Old 11-11-2013, 05:42 PM   #8336
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Originally Posted by Hurley959 View Post
Has anyone come up with the size of a proper replacement O-ring for the hydraulic slave cylinder? Mine is leaking down and I imagine it's the culprit.
I've had the best success with just using the same O-ring as used behind the countershaft sprocket.

O-RING 25,00X2,00 SILICONE Part Nbr: 0770250021
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Old 11-11-2013, 06:12 PM   #8337
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Dumb question.

talked to a mechanic a couple of weeks ago and he suggested that changing the piston, could really improve the vibrations and relax the engine. as anyone done that?
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Old 11-12-2013, 12:04 AM   #8338
skibum69
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I just did the same fix on my master cylinder with the same one as my countershaft sprocket and both seem to have stopped leaking so far.
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Old 11-12-2013, 02:14 PM   #8339
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Where in the Baja?

b
Erendira, at coyote cal's hostel. From there we head north for 70 or so miles of fast dirt roads along the bluffs on the water. Next place I want to go is south from there all the way to san quintin.
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Old 11-14-2013, 12:26 AM   #8340
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Hello from an over debt country that used to be a nice place to live in - Slovenia.
A month ago I bought myself an KTM Lc4 adventure 640, 2000. It's completely stock, has 30.000 km ( I guess ...), everything but the tripmaster resetting itself seems to be working fine. The suspension of this bike is remarkable. Smooth over bumbs, yet soft enough not to break my spine over rough terrain. Well that's it for now.
[IMG][/IMG]

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