The Ultimate DRZ-400SM Thread - Mods, Tips and Tricks

Lonster

Lonster

GaMMa RaNGeR
Here you Go!
 

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Jeffrey Jay

Jeffrey Jay

Veteran Wrench
:cool Stan!
Sounds like a fun way to get into racing.

Let me know how the fork work goes, mine needs it bad since the weight loss program is apparently inoperative:laughing. Race Tech sells the tools so I think I may just do the spring (and possibly valve) swap myself.
 
L

LongGoneJohn

Gone
(Someone asked, so here you go)

Jetting Settings:
Bike: 2006 DRZ400sm
Exhaust: Yoshimura RS-3 slip-on w/ FMF stainless header.
Smog stuff: Removed
Airbox: Snorkel removed, but no 3"x3" hole cut.
Altitude: 0-2000ft

Main Jet: 125 (Factory Pro: Note! This is different than other main jet sizes!)
Pilot Jet: 25 (stock)
Needle: Factory Pro, 3rd position from the top w/ all stock spacers.
Fuel Screw: 3 turns out
Carb: Standard non-FCR carb.
Result: Fantastic low end, power wheelies all day, near 100mph top end and solid mid-range.


Suspension Settings:
Bike: 2006 DRZ400sm
Rider Weight: 185lbs with gear.
Suspension: Stock.

It should be noted that suspension settings vary different based on what you want the bike to do, your style and just overall preference. You may want to use this as a starting point and fine tune from here on.

REAR SHOCK
Race Sag: 2 3/4" (I don't jump, so I wanted a little less than normal sag to help turn in)
Static Sag: 3/4" (stock spring)
High speed compression: 4 turns out
Low speed compression: 14 turns out
Rebound: 4 turns out

FRONT FORKS
Compression: 16 turns out
Rebound: 6 turns out
Fork Height: Raised ~12mm (all the way to the 2006 bars).

RESULT: The bike handled fantastic in the twisties. Did not drift wide mid corner or fail to turn in. Contrary to popular belief, I did not lose any stability by raising the forks. The suspension was supple enough to handle all hard bumps (dirt even) and more importantly, that annoying bounce of concrete freeways we ride on!
 
paroxysm

paroxysm

576cc PieGP world champ.
Wow, lots of good info here! Tomorrow I'll head to my Suz/Yam dealership and order a throttle tube and some new caliper bolts!
 
stan23

stan23

Well-known member
Jeffrey Jay said:
:cool Stan!
Sounds like a fun way to get into racing.

Let me know how the fork work goes, mine needs it bad since the weight loss program is apparently inoperative:laughing. Race Tech sells the tools so I think I may just do the spring (and possibly valve) swap myself.
Click to expand...

Jeff,

My forks and shock are out to get a full treatment at www.evolutionsuspension.com

suspension.jpg


I get my bike back in a week, and i'll report my findings. I'm going to revalve and respring both the forks and shock.

Tonight, I installed my new 520 non-o-ring chain and little things here and there. I can't wait to get my bike back in a week or so.
 
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Papi-C

Papi-C

DOGS = WIN
stan23 said:
Jeff,

My forks and shock are out to get a full treatment at www.evolutionsuspension.com

suspension.jpg


I get my bike back in a week, and i'll report my findings. I'm going to revalve and respring both the forks and shock.

Tonight, I installed my new 520 non-o-ring chain and little things here and there. I can't wait to get my bike back in a week or so.
Click to expand...


I have that poster!
 
stan23

stan23

Well-known member
It's my roommates, but I saw that poster when I was like 10, and thought that may be something I can accomplish by 25. :p
 
paroxysm

paroxysm

576cc PieGP world champ.
Anyone ever hear of a 3/4 or 1/2 turn throttle for the DRZ? I'd like to be able to get to full throttle sooner but 1/6 sounds like it would be way twitchy for a daily rider. And no, I didn't search TT, kthxbye.
 
Lonster

Lonster

GaMMa RaNGeR
The DRZ comes with a 1/4 turn throttle. The 1/5 or 1/6 turn throttle will get you there with less wrist action that the 1/4 turn.
The DRZ is a 40 horse power bike (on it's BEST day), so there is no issue with the faster throttle being too twitchy. That's what I was talking about in my previous post.
If you read a few posts back, you will see that the '03/'04 R-1 throttle assembly is just the ticket, and about $13.00.
Give it a try. If you don't like it, you're only out 13 bucks and a half hour. But you WILL like it, I promise. Especially if you have an FCR on there :)

Lonster

Edit: see post #35
 
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paroxysm

paroxysm

576cc PieGP world champ.
Ohhhhh, OK, I was thinking that the R1 was 1/6th that of the DRZ so I will go out and order one soon :) I assume it is like any other sportbike where I can remove the grip and install just the throttle tube?

Lonster said:
The DRZ comes with a 1/4 turn throttle. The 1/5 or 1/6 turn throttle will get you there with less wrist action that the 1/4 turn.
The DRZ is a 40 horse power bike (on it's BEST day), so there is no issue with the faster throttle being too twitchy. That's what I was talking about in my previous post.
If you read a few posts back, you will see that the '03/'04 R-1 throttle assembly is just the ticket, and about $13.00.
Give it a try. If you don't like it, you're only out 13 bucks and a half hour. But you WILL like it, I promise. Especially if you have an FCR on there :)

Lonster

Edit: see post #35
Click to expand...
 
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