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| Enduro Engine - 2 stroke Cylinder, Piston, Tranny, Bearings, Clutch, Pipes & Silencers, etc. |
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#1
09-13-2015, 12:12 PM
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Piston exhaust port bdc pic
Howdy,
After my tuner did the porting and head work i never bothered to look at piston height at bdc. It might actually go a hair lower than the pic, but would this be considered as good as flush or is there more top end to be had. Two green gaskets used, i assume gasgas oem ones, .3mm each.... uploadfromtaptalk1442164212333.jpg Sent from my SM-N910F using Tapatalk
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2001 EC300, mild porting and head work, DEP silencer, EC200 CDI 
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#2
09-13-2015, 01:12 PM
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Mine is just a little lower than that. I am running a single .5mm oem gasgas gasket.
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2011 GG EC 300E, 1994 CR 250R, 1984 RM 250 E, 2022 Ranger 300 "If you stop eating donuts you will live 3 years longer. It's just 3 more years that you want a donut." ―Comedian Lewis Black "I think best when I have a wrench in my hands." Soichiro Honda "Dreams are messages from the deep." -Unknown Sardaukar
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#3
09-13-2015, 04:01 PM
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I could have taken you a photo if you posted yesterday. Had my pipe off for vibey O-rings.
I run a single 0.5mm and have some piston above the port. Not as much as in your pic though. The dyno simms that TSP ran for me back when I first modified my 2010 model showed a much more usable power curve this way rather than gaining a little at peak RPM and giving up a whole lot in the mid range.
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#4
09-13-2015, 04:48 PM
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I just did my topend and this is the build thread. See the photo on post 7 on this thread.
http://www.gasgasrider.org/forum/showthread.php?t=19892
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2011 GG EC 300E, 1994 CR 250R, 1984 RM 250 E, 2022 Ranger 300 "If you stop eating donuts you will live 3 years longer. It's just 3 more years that you want a donut." ―Comedian Lewis Black "I think best when I have a wrench in my hands." Soichiro Honda "Dreams are messages from the deep." -Unknown Sardaukar
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