danny1979
Newbe
just swapped my tdr 125 for a mk2 rd 125lc, looking for parts inparticular a micron exhaust...any1?
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Post by danny1979 on Feb 26, 2014 14:15:16 GMT 1
hi guys, newbie here from Nottinghamshire
just got a 1986 rd125lc mk2, wondered if i changed the boost bottle from standard to a lager one which I have from a tdr 125 if it would make any difference?
any info on this would be greatly appreciated...thanks |
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Post by ducatidave on Feb 26, 2014 20:33:38 GMT 1
Not sure about 125s but read on hear ther no power gains for 250/350lc
Look good tho : )
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Post by Norbo on Mar 7, 2014 10:18:49 GMT 1
I live new Mansfield mate . If you have a different one then give it a go you never know . you don't have a cross over pipe like the twins so I don't think it will do any thing but give it a go any way mate id like to hear if it did do any thing .
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Post by AndyYam on Mar 8, 2014 16:57:38 GMT 1
The volume of the boost bottle is supposed to match the engine displacement from what I've read. But then I also read that they are supposed to be directly above the cylinder and none of Yamahas are. I don't think they are designed to be a power gain. They are there to draw off a chunk of mixture to prevent it from passing through the carb twice and thus becoming a double rich mixture. I think they just cure flat spots in mid range power. I think changing the size will change the point in the rev range that will affect. As Norbo says though, go for it. Experimenting is always worth a shot. Its not going to cause any damage. The DT125R's boost bottle changed without the engine changing or carb. on this model in 1993 www.yamahamotorcyclespares.co.uk/genuineparts/9139/6/yamaha%20dt125r/intake?uid=0it has a different bottle to the earlier 1988 one below www.yamahamotorcyclespares.co.uk/genuineparts/9104/6/yamaha%20dt125r/intake?uID=0The one on the 1988 model was also used on the belgarda TZR125R models which use the same engine but a 4mm larger carb. |
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