Hello everyone

i bought my first DRZ a few days ago 04 yellow s model . mods are 434 big bore, e cams,yosi exhaust with fmf power bomb header pipe, 3x3 airbox mod and FCR carb..it seemed to be running lean and lacked power so i pulled the carb and it had a 150 main jet and needle was on second clip. dropped neddle to 5th slot and installed a 165 main and played with fuel(pilot) screw.2 1/4 turns out.runs better..question i have is i seen in a few stickys when you pull the screw that holds the needle in that there is a spring type thing on it..mine never had that..do i need to order one or is it ok?been thru a few 4 wheeler carbs but this is my first DRZ . it comes right up in first now no problem but still struggle to power up in second gear..15/41 sprockets..is this normal for a drz..with a 200lb rider?

Which fcr do you have?.What needle is installed..?.
For big bore use 155mj...

If it is Fcrmx ...Spring and collar is required
Coil spring.  Part No.1290-A65-200
Collar ........ Part No.1118-B36-20000
243 and 244 on diagram...http://www.sudco.com/fcrmx.html

If Slant Body Fcr (stock E) no spring and collar

Edited by CraigoDRZ485sm, 13 April 2012 - 01:01 AM.

dont really no alot about them, i know it has a TPS on the left hand side.

how do you tell the difference

Does your carb look like the one shown in this great pic of Eddie's project ?

not exactly..i dont have a screw at the bottom to drain fuel and i have a few things blocked/plugged off on my left side

scites, on 13 April 2012 - 05:38 PM, said:

So does it look like this??




or like this with the coast enrichener removed

Edited by CraigoDRZ485sm, 13 April 2012 - 06:16 PM.

that looks like the one..with the coast enricher removed..i was looking at it a little bit ago and noticed it had a R&D Ajustable AP on it..didnt no what it was so been researching it the last hour..lol

OK..That's slant body fcr..No spring and collar required
What did the needle have stamped on ?

Edited by CraigoDRZ485sm, 13 April 2012 - 07:36 PM.

no stamp on the needle, it is a brass needle with like 7 notches on it. i know about halfway down the taper there is a step in it

All standard needles will have 3 or 5 code letters near the top.  JD Jetting needle will be blue or red on the top but no other markings.  DynoJet needles I do not know how or if they are marked at all.  But you don't want to use a DynoJet needle.  A step in the taper???  I'd like to see that.

Yes ...some pictures please....