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View Poll Results: How many Gassers have you owned?
1 126 44.84%
2 73 25.98%
3 43 15.30%
4 17 6.05%
5 or more 22 7.83%
Voters: 281. You may not vote on this poll

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  #81  
Old 12-20-2014, 10:10 PM
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Zman Zman is offline
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Hey Jim

The 76mm piston is a Wiseco from Eddie Sanders Racing part number 11505M07600. Wiseco will not sell them to you directly. The application is a big bore for an Honda ATC250. You will need to clearance the bottom of the piston to clear the cases and to match the case transfer port side windows. You will also need to cut down the power valve to clear. Last but not least you will need to weld and recut the head. http://www.eddie-sanders-racing.com/...ston-kits-.htm

76mm was about as big as I could go on the GG 300 cylinder. It was really close and did not leave much margin between new bore and the inner head o-ring groove. Here is some more info on it. http://www.thumpertalk.com/topic/751...s#entry7882216

I spoke with that guy that put the 250 cylinder on the 200. As I recall he said he had to cut the base of the cylinder about 1mm. I set a 250 cylinder on a 200 one time and took a photo. I lost my measurement but as I recall the piston was about 0.04 to 0.045 low in the hole at TDC.
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File Type: jpg 250 top end on a 200 bottom end.jpg (122.7 KB, 15 views)


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  #82  
Old 12-21-2014, 09:24 AM
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Jim Cook Jim Cook is offline
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Quote:
Originally Posted by Zman View Post
Hey Jim

The 76mm piston is a Wiseco from Eddie Sanders Racing part number 11505M07600. Wiseco will not sell them to you directly. The application is a big bore for an Honda ATC250. You will need to clearance the bottom of the piston to clear the cases and to match the case transfer port side windows. You will also need to cut down the power valve to clear. Last but not least you will need to weld and recut the head. http://www.eddie-sanders-racing.com/...ston-kits-.htm

76mm was about as big as I could go on the GG 300 cylinder. It was really close and did not leave much margin between new bore and the inner head o-ring groove. Here is some more info on it. http://www.thumpertalk.com/topic/751...s#entry7882216

I spoke with that guy that put the 250 cylinder on the 200. As I recall he said he had to cut the base of the cylinder about 1mm. I set a 250 cylinder on a 200 one time and took a photo. I lost my measurement but as I recall the piston was about 0.04 to 0.045 low in the hole at TDC.

Thanks for the information. He didn't tell me that he had to cut the base of the cylinder for the 200/225 conversion.

Oh yeah. I had forgotten that the head had to be built up and milled to fit the 274cc job. That was done in my project bike, also.

Good Riding!
Jim



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Jim Cook
Smackover Racing
Team LAGNAF
'11 Gas Gas EC250 (primary ride)
'06 Gas Gas DE300
'94 Husaberg FE350
'86 Yamaha IT200 AHRMA CC Race bike
Several others, including project bikes, Deb's bike, and a fleet of grandkids' bikes

Let's go riding!
http://www.jebruns.com/Wudi19/wudi19.html
http://www.ahrma.org/schedules-results/cross-country/
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  #83  
Old 12-27-2014, 11:24 PM
NZMark NZMark is offline
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Join Date: Oct 2014
Posts: 40
Smile 1st GasGas

2013 factory 300
My first GasGas but I'm sure it won't be my last
Just love'n it
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  #84  
Old 12-28-2014, 08:27 AM
memphis2857 memphis2857 is offline
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Join Date: Aug 2011
Posts: 806
Default How many Gassers have you owned?

05 EC300 de
11 ec300 Racing

I am a gasser for life now


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Last edited by memphis2857; 01-07-2015 at 02:34 PM.
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  #85  
Old 12-28-2014, 05:47 PM
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adven adven is offline
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A 2003 TXT 250,
a 2010 TXT 250 pro,
and a few weeks ago a brand new 2010 EC 250 Racing (will need a bit of help with jetting, since I'm not happy yet) which is a fantastic bike so I'm a Gas Gas fan !!
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  #86  
Old 06-27-2017, 09:47 PM
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ninestone ninestone is offline
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Join Date: May 2016
Location: Minturn, CO
Posts: 2
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Im on my first one.

Regularly look for number 2 with no reason, extremely rare around here.
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2004 EC200
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  #87  
Old 06-27-2017, 11:35 PM
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bergerhag bergerhag is online now
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Location: Timr?, Sweden
Posts: 675
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Currently eight of them. With the release of the 2018 it might be nine...
1992 GT 32
2000 TXT 280
2005 EC 450 FSE
2006 MC 65
2010 EC 300
2011 EC 125
2012 EC 300
2014 EC 250 F Nordic. This is my current bike
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