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Dirt Bike Brands - Other
Better TM 250 low end
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[QUOTE="robbyemm2, post: 986400, member: 65019"] [b]better bottom end from TM's[/b] Gudday I had the same problem with a 2000 model TM300E. Just come off an RMX 250 (with crankcase porting work done to increase bottom and mid range) and found that the TM was weaker than the RMX ! Rang TM importers here in OZ - their reply was that I must be joking and dont know what i was talking about. The solution came from looking at the compression ratio - from memory it was around 16 to 1. My local engine tuner said that any bike with this sort of compression ration would have the power curve like a 125cc motor. He called TM and tried to get some answers as well - (probably due to us only getting 98 octane fuel - poor quality) but to no avail. He later machined the dome in the head (lowered compression ratio) and altered the squish shape. The result? - a heap more grunt down low and midrange and minimal impact at high RPM. (Incidentally - TM altered the heads on the bikes that come to OZ on the 01 modles as well. These bikes are awesome, i would just see if it the fuel you are using...... ta Rob [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
Better TM 250 low end
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