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Old 05-10-2014, 03:23 PM   #1
gameyogi OP
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6.6 gallon tank on a KTM 250 2 stroke

Here's the deal, I have an Acerbis 6.6 gallon tank that I bought for my 525, but I want to put it on my 2004 250 exc for the tour of Idaho this summer (I could use the 525 but I enjoy riding the 250 so much more)
I dropped the tank on the 250 and it fits perfectly except in one crucial spot where it touches the expansion chamber The chamber I have on there is the FMF Gnarly, I've seen pics of other KTM 2 strokes fitted with this tank and they didn't have this issue, so it may be a pipe thing, but in lieu of buying a new expansion chamber I was wondering if putting some heat shielding between the tank and the pipe would work? Also, can this tank be heated and re-shaped?

here are a few pics of the issue:





any input appreciated
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Old 05-10-2014, 03:52 PM   #2
jwdub
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Count me as interested in what you find out. I ruled out a two stroke because of the lack of range. It would be nice to have an alternative.
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Old 05-10-2014, 04:40 PM   #3
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This guy has one on his SX http://advrider.com/forums/showthrea...=624747&page=6

and there was a guy with a 300 who had one as well
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Old 05-10-2014, 04:57 PM   #4
Dogbone
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Why not mount a couple 1/2" spacers between the tank and frame?

Easy, non permanent, and it should solve the problem...
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Old 05-10-2014, 06:33 PM   #5
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You can't get a bit of rotation out of the expansion chamber mounts? My 200 can be varied some.
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Old 05-10-2014, 06:37 PM   #6
WIsixfitty
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just put a "performance" dent into the pipe in that area.
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Old 05-10-2014, 07:15 PM   #7
OrangeYZ
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Quote:
Originally Posted by WIsixfitty View Post
just put a "performance" dent into the pipe in that area.
Agreed. That's the biggest part of the pipe and it probably won't make any difference.
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Old 05-10-2014, 07:23 PM   #8
gameyogi OP
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I have a few performance dents already, guess 1 more won't hurt. I think I'll try shifting it around and look for other options first though.
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Old 05-10-2014, 08:10 PM   #9
gameyogi OP
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oh, and I tried spacers, didn't work.
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Old 05-11-2014, 05:25 AM   #10
jaredisaac
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I'm doing T1 on my 300 xc this year. 2 stroke fever.


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Old 05-11-2014, 06:42 AM   #11
WIsixfitty
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Originally Posted by OrangeYZ View Post
Agreed. That's the biggest part of the pipe and it probably won't make any difference.
this.
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Old 05-11-2014, 07:02 AM   #12
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Get out the

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Old 05-11-2014, 07:31 AM   #13
RideFreak
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Just tale a heat gun and mold the tank inward in that location about 1/2'. I did it before to make a fan fit on one, it's pretty easy, use a blunt piece of wood to push it in and hold it in as you pour some cool water on the area.
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Old 05-11-2014, 08:55 AM   #14
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I think I'll try ridefreaks solution first and keep the bfh to the pipe solution as a back up. Thanks for the input.
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Old 05-11-2014, 05:23 PM   #15
gameyogi OP
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For those who are interested, I used a heat gun and carefully molded the tank, I also adjusted the fit of the pipe a bit and now have about 3/4 of an inch clearance. I will probabe add some heat shielding to the pipe as well but it looks like it's good to go, I'll just have to chack it if I dump the bike.

thanks for the input, I'll post pics when I get it all mounted and finalized.
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