2001 RM250/ 1994 KX500 conversion. The "Kawasuki RM500"

[mikectanker]

Ride report. Adjusted the needle to the leanest setting and went 1/4 out to 2 turns on the air screw.
Still needs a leaner pilot jet to crisp the low rpm.  Currently a 55 pilot. Plug is nice and brown/tan.

Roll on power is way better from the bottom of 2nd gear coming out of turns.

Sag is set at about 90 mm with the forks dropped all the way.
I want to try 100mm of sag but the bike is hooking up great and I'm not sure if I want more Traction.
Turning feels great but I need to play more with handlebar positioning.

I need to get some time on the mx track and see how it does.
Shoundn't have any bottoming issues with the suspension.
My neighbor has a tight little track and it felt good on little doubles and sIngles.

Felt good to ride a little and adjust levers and jetting. After a long winter I'd like to ride the 250f a few times and get into shape but the carb is being fixed up.... so 500 @ the track it will be tomorrow morning or Monday afternoon.






R

[mikectanker]

I might add a flywheel weight. I've never tried one before.
How do you guys like a flywheel weight for mx with these motors?

[mikectanker]

Just ordered the Chinese hydraulic clutch kit on ebay.
I saw some guys on thumpertalk had good luck with them. Just got to cut my new grip off and make a little adaptor. For $40 I'll make it work like the guy did on his Kx250. I doubt I can get the grip off with the goo I used

[RoostDaddy]

What main jet and needle are you running?

[mikectanker]

What main jet and needle are you running?

Currently 1994 pwk stock carb
Air screw 2 turns out
Main jet 178
Pilot jet 55
Needle 82R (stock)
Clip in top/leanest position

Fmf gnarly and fmf Rm250 silencer
Stock reed cage with Boyesens
Stock 1990 cylinder
Prox flat top piston
1mm thick moose head gasket
Alward's KIPS bolt mod
BR8ES plug
40:1 am soil dominator
1/2 Cam2 and 1/2 pump gas (110/91 octane=100.5)

I'm not sure but I think one step leaner on the pilot and needle should be perfect with an air screw adjustment.
Any advice is welcomed.

Not sure if it's worth putting my vforce 3 on in place of the stocker.

[Foxx4Beaver]

Currently 1994 pwk stock carb
Air screw 2 turns out
Main jet 178
Pilot jet 55
Needle 82R (stock)
Clip in top/leanest position

that's some bizarre jetting for a stock carb....what elevation and air temps are you typically running in?

[Foxx4Beaver]

Motorrad's standard base point recommendations for a stock carb are...

main...168
pilot...55
middle clip position with a stock needle
1 1/2 to 2 turns out on air screw

you will more than likely have some fine tuning to do...as I had to run a bit leaner to those base settings with a stock carb.

I was running..
main...168
pilot...52
N82T needle in 2nd from top(leaner needle)
1 3/4 out on air screw
I'm only at either side of 250ft above sea level. 

I myself, and others on here have found that dropping down to a 52 pilot makes a huge difference, especially if doing a lot of slow speeds...like trail riding...cleaned it right up.
Everyone's will be a touch different, just due to elevation/air temp/motor mods/style of riding....just remember to go in small increments at a time, and only change one thing at a time.

[mikectanker]

1000 ft +\- 200ft sometimes higher. All those jets were in the carb when I got it. I've never been a master of jetting but it seems ok. I think there's room for improvement. It was 55 degrees yesterday testing a little bit.


The fmf jetting recommendations for a 1994 carb at 65-80 temps 32:1 at sea level. ...
Main 175
Pilot 58
Needle stock (82R)
Clip 2nd position
Air screw 1.5 out

The main jet sizes vary from 175 to 165 on the fmf sheet that came with the pipe

[Foxx4Beaver]

yeah those charts tend be on the "fatter" side....because they don't want to be responsible for anyone blowing their motor, for suggesting too lean of conditions....so they keep it on the "fatter/safer" side.
There's a few threads on here referring to charts, and most guys say, that they end up pretty far off (leaner for the most part) from what the charts suggest.
Motorrads base line settings are the better ones to use.
 

[RoostDaddy]

I am also from PA with elevation in the same area as you. Also running a Gorr motor, FMF pipe and silencer, stock style reed cage with Boyesens. Although my motor is 88mm bore and carb is bored to 40.5mm running straight VP fuel.
I think you may find yourself in the range of 50 pilot 168 main clip in the middle with the airscrew 2 turns out. Not saying for you to go with these exact jetting specs but I do believe that this will have you close.

[mikectanker]

I am also from PA with elevation in the same area as you. Also running a Gorr motor, FMF pipe and silencer, stock style reed cage with Boyesens. Although my motor is 88mm bore and carb is bored to 40.5mm running straight VP fuel.
I think you may find yourself in the range of 50 pilot 168 main clip in the middle with the airscrew 2 turns out. Not saying for you to go with these exact jetting specs but I do believe that this will have you close.

Thanks.  I'm not sure why but for some reason the 1994 carb seems to have a higher number pilot jet.

[mikectanker]

Got my rear wheel from warp9.  Had to send it back.
I ordered a 19 inch wheel but an  18 inch showed up.

Chinese hydraulic clutch showed up.

So busy with trucking I don't know when I'll get anything done on the bike again.

Going for a jog with the pw50 on a leash is about the current extent of my moto activity.
The  little guy wants nothing to do with the 6 volt dirtbike,  but loves the pw50

[Foxx4Beaver]

what color/combo wheel and hub?
I've actually been considering picking up an 18" just for x-tra tire choices.

[mikectanker]

what color/combo wheel and hub?
I've actually been considering picking up an 18" just for x-tra tire choices.

I ordered all silver so i could be cheap and have it sort of match my stock front wheel.
It looked great and tough as hell, but i have a new 19in tire for the 19 inch wheel i ordered.
So nice i thought about keeping it and getting a 18 inch tire

[Foxx4Beaver]

they are great wheels...I've had mine for 4 years now, and they're still in awesome shape.