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Enduro Engine - 2 stroke Cylinder, Piston, Tranny, Bearings, Clutch, Pipes & Silencers, etc. |
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Thread Tools | Display Modes |
#1
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How to tell if Head mod has already been done?
Anyone know if there is a way to tell if the RB head mod has been done on a head by looking at it? measurement?
Thanks
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2004 EC-200, 2001 KDX-220, 2016 Beta 300 |
#2
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Calculate the trapped volume
Measure the squish CC the combustion chamber |
#3
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Here is some more info.
http://www.gasgasrider.org/html/measuring_squish.html Measuring the squish is probably the easiest place to start
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2011 Gasgas EC200, 1966 BSA 350 scrambles, 1972 Montesa cota 247 |
#4
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Thanks, Guess I'll have to pop the head and measure it.
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2004 EC-200, 2001 KDX-220, 2016 Beta 300 |
#5
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Easy way is the squish. If it says ~2mm then it hasn't been touched. If its 1mm then it likely has.
If you pop it & there is the black anodising all over then it hasn't been touched. If it has been modified you can't tell who by, but have a check of some of the old threads & they'll give you a clue as to what they look like when done. this is my thread, first pica are skimmed but they look black all over the inside to start with. http://www.gasgasrider.org/forum/showthread.php?t=16560
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'07 EC300 GG '14 TXT250 GG '? 496 CPI Cheetah RZ/RGV hybrid '22 765 Street Triple RS '21 XTrainer '69 Stinger T125 Suzuki '23 TRS 250RR (it's a Trials thing) |
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