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Let's talk needles

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I have a Factory jet kit that was for a SV650 that I owned a few years back. The needles look like they will work in the DRZ400S that I have now. The carb off the SV650 was a BDSR39 but the slide is identical to the DRZ400's. Reason I know is I have a old slide left over from the SV650. Long story short I broke the SV650 slide installing the needle plunger & had to order a new one so I still have the broke one in the tool box. I also still have the main jets from the SV jet kit which are the same kind used in the DRZ, #140, #142.5 & #145. What would be a drawback of installing the Factory needle in the DRZ & setting the clip on the 3rd slot down from top as a starting point? swap out the stock 142.5 jet with the 140 main & install the 25 pilot? of course re-adjusting the fuel screw.

This jet kit worked okay in the SV but I preferred the shimmed OEM needle, OEM main & Factory richer pilot. Hence that is the reason I still have the SV650's kit on hand, bike is long gone. :thumbsup:

Just inquiring about this not trying to start a who's jetting works best thread or you should do this & that. :devil:

BTW the bike runs real clean & smooth now with my current setup. I guess I am bored & want to experiment.

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well,i dont endorse or use factory jet kits.if thats the past jet kit experience you reffered to,i can see why your hesistant.

having the choice between the stock needle or a factory jet kit needle i would go stock needle everytime.even if you decided the use the factory needle,the taper,end demension and straight demension are unknown.

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I really don't care for any brand jet kit, seems I have always had my ups & downs with all of them. I might go ahead & just install the needle & see what happens. It is not that big a project to do unless I break another throttle slide again pushing the needle plunger down :thumbsup:

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no harm in trying.

if the end demension is smaller,you will need way less than 142.5 for a main jet with the stock hole.

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