How to install a FCR39 carb on a DRZ400 S or SM 

thanks! i to am a visual learner, i can read and read about something and retain almost nothing unless i have a hands on knowledge already. but if you show me something or how it works, it like coming in and doing the majority of the puzzle for me and i can breeze through it. im making a condensed version of this soon.

Tyler Berryhill thank man! i worked really hard on this!

Video?

@@darthorpheus All you need to do its remove the top subframe bolt that is just under the rear of the fuel tank... From there you can apply light pressure on the tail and separate the subframe.... then place the subframe bolt back into the frame hole and allow the sub to rest against it and it will prevent it from moving forward while you are working.... That will give you clearance enough to work with and not have to fight it as hard. Its still going to be a bitch to put back in and get the boots on but its not nearly as bad as it is with the subframe bolted on.

Also MAKE SURE you do NOT apply too much pressure on the subframe... just enough to slide the bolt back into the frame and allow the sub to rest against the bolt.... You risk damaging the rear brake reservior if you put too much pressure on the tail when separating the frames. So be careful of that and it should be simple and much easier.

yup been there. so easy to forget...i forgot it lol

Tell me about it lol. There was in fact a change made back in 2015 and the air jet is no longer removed. You will need to verify your carb's build date to make absolutely sure that it is a newer model first.

+ParryMoto thank you! i try my best

keyser soze Thanks! that series of videos was exactly why i decided to make this one!

Naked Coyote what jets can i Put in my drz With the Carb fcr39

+Amano1977 it was a rough couple of days lol

it's pretty easy stuff, just can be afraid to get a bit manly with her!

I've got quads and other bikes but you know how it is there usually is something odd from brand to brand. Never hurts to know what you're getting in to. Now If I take full possession of this bike I can modify it. Thanks

+Todd Miller before you get nuts, be sure to stop buy Thumper Talk and search out " drz400 mandatory mods" there are a few things you really need to do to make her live long and breath fire! easy stuff to do, just a bit time consuming...they are also almost free!

Cool. I'm CraigKrage on ThumperTalk. Thanks

i will search you out!

Oooonumbers no problem!

focus on the pilot jet and its passages.

Done. Bike seams to be running just fine. By 1pm I pulled it stripped it and ultrasonic cleaned it. The pilot jet was almost solid and I had to use a hypodermic pin to pick it clean. With your detailed destructions It was a quick R and R. Thanks for the tip and not just the tip.

lol well it was only for a minute mind you... glad to be of help

+Bummer450 thanks man, more to come!

its easy stuff bro, the first times a learning curve but after that you get to where you can pull yhe carb in 15mins

Random RU-vid spree?

this is a harder job then it looks

i didnt see you installing the front sleeve

You probably couldn't. Not trying to be an ass. But this is a somewhat tedious job. Alot of unexpected things pop up

+williecycle thats my job man!

+v0nsild well carb set up is: 45 pilot PAJ removed 155 main jet over all set up is: 434 big bore kit with 11.5:1 comp piston .010 base gasket to rais compression to 12.2:1+ sage 2 hot cams (about to be replaced with web 540 grinds) fcr39mx mrd exhaust full racetech suspension (springs, gold valves front and rear, custom shim stack to my riding style)

If youre able to plate MX bikes in your state you are one lucky dude. Here in oregon we cant so enduros or supermotos are way over priced. People wanting 4-6k for a drz400s-sm. Its shitty when a bike like that costs as much as an extremely nice naked, sport, or cruiser bike. I got extremely lucky a few years ago and found a 2003 Husaberg 450 converted supermoto for $2600. I immediately sold my DRZ400sm after experiencing the Husaberg.. 34hp on a heavy bike makes these DRZs an overpriced turd. The one thing these DRZs have going for them is the reliability but anyone who can take 30 min each month to change oil and check valves could make any bike last a long time. The only DRZ I came across that I thought had enough performance had an Athena Big Bore 530 Kit, the 41mm FCR, and Hot cams but At the end of the day he still couldnt touch compete with my bike. So for the $7500 he had into the bike, it was still heavier, slower, less agile, and bigger. Sorry for the rant. I just hate how my state doesnt allow us to Plate MX bikes. lol

Can ya come and do mine brother, ✌️

@@riffraff8426 then me please.

There was a time where I could spit this out, but that time has come and gone sadly. I would say the best way would be to look up the drz fcr39 kit and see what one comes supplied there. If that doesn't help, you could always goes with a non vacuum operated petcock, seeing as that is what the vac line is for. But that has its own issues.

no its not necessarily to remove it. mine was broken when I bought the bike so I deleted it.

+411kieran ohkay show down there tex lol. 1. tune set up: -stock timing -stage 2 hot cams -mrd exhaust -434 cw bigbore kit - .010 base gasket 2. jetting: - 155 main jet for cool weather/ 150 for warm weather -45 piolt jet (year round) -2 1/2 turns on mixture screw -emr needle at stock TT clip position 3. i removed the piolt air jet but it feels and sounds like i need to re-install a 150 paj if you can down the road, sell that yoshi rs-2 to a unsuspecting drz rider and move to a mrd. i sold my yoshi for 300 and bought a used mrd for 325.00. the top end power and mid range improvment made modulating the throttle during 3rd gear wheelies a breeze! Show less

+etyrnal your welcome! drz's are a big part of my life and i wanted to give back to those who dont want to google for 9 hours how to do things.

i intend to upgrade mine as i can afford it. i'm worried that the whole thing will be an experiment... or a pick and choose from a sea of opinions type experience... how does one know what jets to use with which carbs or which headers, or cranks, or cams, or bores, etc etc? is it all just an experiment? or is there a way to knowingly make each change? Can one put on a big bore without a carb upgrade? Or will it run but starve for air? Is there a book?

there is a overall formula but for the most part it goes like this. 3x3 mod & jd jet kit exhuast fcr upgrade big bore kit cams this is what 90%of people do when they want to mod one of these critters, in that order. when you order the jd kit they will give direction on what you need to use in the kit. then when you move to the fcr carb, if you buy the TT kit, it will come pre jetted for a broad set up. but for what it is, it will serve a host of mods until you get the bb kit. and actually then you will need to decrease your main jet size a bit from the increased air flow from the bb kit.

Its probably running a bit lean. Pull the choke out while it's hesitating and if it runs better it's lean. Raise the needle up a notch to richen. Or secondly, you could try the next bigger main jet. IF it runs worse with choke on, lower the needle a notch or 2.

My first place I would look it Ebay, of coarse. but assuming you have already done that, ThumperTalk classifieds/ posting a ISO post about it there would pan out at some point. Luckily Suki did little to change much of anything on the drz'r in the last... decade so pretty much anything 03 or newer should work for the job. With out knowing the finer details of the build (model year, factory carb, mods), this is as best an answer as I can give.

Take out one of the bolts in the inlet manifold and replace it with vacuum adapter fitting as shown in this vid. You can make an adapter by cutting the thread off an M8 bolt and drilling a small hole concentrically down the bolt. Use a soft grade bolt to aid drilling. Grind one end smaller to accept the vacuum hose. Put a nut and some sealer on the thread and install it in the head.

+greenrolaids NO PROBLEM MATE!!!