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Post Info TOPIC: Jetting


DTR Member

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Jetting
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I have just recentley bought an 88 dt and could do with so advice with re-jetting the carb. The power valve is set fully open,hy tech reeds fitted and standard exhaust hes been gutted.I used to have one brilliantly set up back then but can't remember what jets needed.All advice would be gratefully recieved thanks.



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DTR Legend

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Most of the people on here use a 240/260 jet. I'm currently thinking about testing out a 240/260 as i'm running a 210 at the moment. Best thing to do is to find a steep hill, start at the bottom in first and pin the throttle wide open upto about 3rd/4th until you reach the top, kill the engine and do a plug check, if you're plug is clear your running rich, if it's a chocolate brown colour your fine. Hope this helps bud! wink



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Cheers was lookin for a size to work from,sorted now cheers smile.Thanks for that I couldn't remember what size I used to run ,there again it was over 20 yrs ago !!hmm



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Guru

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Energized wrote:

Most of the people on here use a 240/260 jet. I'm currently thinking about testing out a 240/260 as i'm running a 210 at the moment. Best thing to do is to find a steep hill, start at the bottom in first and pin the throttle wide open upto about 3rd/4th until you reach the top, kill the engine and do a plug check, if you're plug is clear your running rich, if it's a chocolate brown colour your fine. Hope this helps bud! wink


 

that sounds very familiar lol, least someone listens to me



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DTR Legend

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Haha yeah, you and some mechanics too winksmile



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Guru

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the "uphill" test was my dads most accurate test back in the RD350 days,



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DTR Legend

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Hehe awesome, yeah it's spot on! Local mechanic suggested it to me aswell + my dad haha!



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DTR Senior Member

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which carb?. 26mm or the 28mm mikuni?

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Project Yamaha TZR125RR Belgarda 4DL



DTR Newbie

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hiya guys ,any of u no where i can pick up a cheap set of racing reeds an a up rated jet 4 my dt125r ,normally wood go 2 me mate ,but his shop burnt down in the croydon riots cheers

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DTR Member

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Always had better results years ago when racing using Hy tech rather thab Boysen .I just had a set oy Ebay think they were around 14 quid n fast delivery off www.yambits.com.


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