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DT125R Forum -> Tuning -> What Size Jet?
Post Info TOPIC: What Size Jet?
Clarkie


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What Size Jet?
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Hi, I have a 1988 DTR (3BD1 model) with a Mikuni carb. Does anyone know what size the standard main jet should be? Hanyes say 125 can that be right when the later models are 210.

Cheers Clarkie.

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DT-R_bradders


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mikuni flatslide???

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Clarkie


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It has a round carb slide. Would a flatslide fit?

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DT-R_bradders


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it would but ur gonna need the rubber mounting block that goes on top of the reed block aswell
wat the book is saying is most likly right m8.. l8r dts had the flatslide carb = different jet sizes


-- Edited by DT-R_bradders on Tuesday 1st of March 2011 06:34:52 PM

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Clarkie


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That's the strange thing same carb Mikuni VM26ss but different jet size for the 3BD1 and 3RN1 models.

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zo0op


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DT-R_bradders wrote:

it would but ur gonna need the rubber mounting block that goes on top of the reed block aswell

wat the book is saying is most likly right m8.. l8r dts had the flatslide carb = different jet sizes


-- Edited by DT-R_bradders on Tuesday 1st of March 2011 06:34:52 PM

 



didnt think u had to change the inlet rubber? iv just had my mates old 1 of him and hes running a flat side but my round side fits str8 onto it



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DT-R_bradders


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sorry my bad i thought the roundslide carb was like straight through and the flat slide is all set up at an angle if u know wat i mean?? lol ill get pics up in a sec to show u wat i mean

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louisBOSS


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u do the , old carb oil pipe went on the carb , new one goes in a nipple on the maifold

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DTR NESTOR


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mines a 1989 and the oil feed is to the manifold, you got that mixed up i thinks mate ^^^^^^

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Clarkie


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OK, so to fit a flatslide carb on 1988 I also need the manifold with the oil inlet. I've had a look at some pics and it seems to be around where the boost bottle goes on. Is that right?

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PatMan


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Hmmmmmm I am wondering what size jet I have on mine and hell would I beable to tell etc, this topic keeps cropping up on this forum so of course has me curious now

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Clarkie


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I've found a guy on ebay selling Mikuni jets at £2 each so I'm gonna buy the #125 that Haynes recomend and a couple more to play around with. What size should I buy?

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