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I NEED HELP WITH MY 01 CR250 PLEASE!

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Hi guys I bout this 01 cr250 a couple weeks ago for 500 dollars from some shady guy. I originally thought hey i good with mechanics this is a beat u bike ill bring this baby back to life! But after some time and a lot a lot of work and harsh news i decided to come to you guys. So if you guys wouldnt mind helping a inspired teenager bring this cr250 to life that be great. :D here are the main questions i have at the moment:

 

1. This bike needs a top end rebuild and i bought a wiseco stock size piston and i took the cylinder to a machine shop to get it honed and the machinist said that the scoring on the cylinder walls were so bad that it needed to be bored. Now would you guys suggest getting a new cylinder and keep the wiseco piston or getting the silly old cylinder bored replated and then honed and getting a different sized piston?

 

2.Do i need to drill holes in the wiseco piston?

 

3.What do you guys suggest to seal or keep the frame from corroding?

 

4.What would you guys say would be good to check over on a beatin bike and clean up or change for example changing tires or greasing swing arm bolt

 

5.What are the main things to do to clean up the frame and swing arm and other metal parts on this bike because one big thing that gets me down is seeing all these beautiful bikes on this site and then thinking about my 500 dollar thumper 

 

Thanks for the help guys i just need some help with this project I'm kinda young and this is a big bite to chew :p

 

(I will also be posting pics of my progress and stuff if you guys want to see) 

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Get the cylinder replayed or by a new one. I lean towards a new cylinder. Here is a link to a new one.

http://partstream.arinet.com/Mobile/fhVC_b3PCFHHSdJH6-tUnM8iJ8ZlvLX5ew770YQlJEGh11rhy3UCKB3ZOMYSaEyl6S3C80iyCDBTVZDnjUQcF3Ow42B6HYRhboziKiKu6Q65HxwYXBHkayeh4SvLDwWy6ECabf5oj1CeKLrxAqc3LZaEPRjEtuqq9i9br9TXXwWjXLyzgTc55G4kLJ0MGKaolKeplJg-AfrrU1X9-9RSUA2.html#/Mobile/-PsumwOkDoSzFE5Ib0T5uCMNHD-RIx4JRbO5g11nuZ8sgt9S7OQ4XPQ5PVXaGCZKgLDUE7Pi4XZXisu73zPpkwUJ8Gzvr8oMbrVb0p945pU1.html

You don't have a single exhaust bridge. I would not drill any holes.

If the piston you already bought is a standard bore size. It will work with the new cylinder or a replated one. If you go the plated route just send in the piston with the cylinder so they can fit it to the cylinder.

Clean the frame with steel wool and wd40, or some fine sand paper. You can keep it looking new with a scotch pad.

Edited by Kirkes

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cool I've been using scotch bright pads that fit on a mini sander and going finer and finer so you would just buy a new cylinder?

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Those naksil bores, really shouldnt be honed as a routine, the plating is too thin for that, they are honed when they are plated for the first time.

As to your question, if your bore is in good enough shape just to be replated with Nakasil, that would be ideal. Next would be finding a competant company to do it. There are also companies that can install a borable sleeve. I think a new cylinder is the most expensive route. Make sure you have zero up and down play in the lower rod bearing.

Edited by Spud786

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I sadly do have soem play very little bit some in the bearing but i cant see any crosshatches on the side walls and thier are nice scores down the side but you say the best thign to do would be to get it re plated? sorry im kinda out of it tonight. Id like to be able to use my stock wiseco piston if i can. 

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I use Dave at "MX Time.". I know for a fact that he is honest. He has a top end of mine, off a 2002 cr250 right now. He is going to remove and clean the powervalves, weld and repair a crack on the exhaust bridge, replate it and send it back with a new piston for $365. He will shoot straight with you.

Cody, Oklahoma

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Go buy some cleaner and a bucket of grease-- clean and grease your axles,chain adjuster bolts, headstem, & swingarm linkcage.

nothin polishes a turd nicer than a new set of plastics... Also  I would prolly pull the carb and clean and blow all the jets out possibly soak the carb in some seafoam (awesome stuff at autozone for $8)


throw up some before and after pics , always cool to see a bike come back from the grave

  • Like 1

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Id love to show some pics but i dont quite know how to post them on this site any tips? and whats a good over all grease?

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Belray for grease.  Post your pics to Photobucket then link them from here.

 

I wanna see what ya got before I tell ya what to do with it :)

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Pull the swingarm and the linkage bearings...verify good/replace. Replace brake fluids with fresh. Get at the head stem bearings...verify good/replace. BelRay waterproof grease, but don't be dumb...put the right amount on and clean off excess. Pull the tires off, and verify the rim and spokes are in good shape, spokes tight. Ensure the rim wrap is acceptable. I use a strip of gorilla tape as opposed to that stock rubber thing, but whatever. Wheel bearings...verify good/replace. Chain and sprockets...what do they look like? Gotta pic?  Grips in good shape?  Bars not bent?  Controls, cables and cable routing good? Got all the bolts to hold everything together?  Clutch pack can be pulled out and inspected. Air filter cleaned. Tranny oil change...what's the old look like?  Take a pic.  Dump the coolant into something...take a pic :)

 

Take a pic of that linkage and the wheel hubs/bearings and post them. You're gonna need to check on those forks...but that's a more advanced topic

 

oh yeah, get a shop manual :thumbsup:

Edited by Slackkinhard
  • Like 1

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I just spent like 2000 on parts tell me what u think ill post a pic of them all right now 

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I just spent like 2000 on parts tell me what u think ill post a pic of them all right now 

 

:eek: $2000???

 

yeah, lets see what ya got

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EBC MXS Brake Pad - Sintered Metal - 2001 Honda CR250R (Front)

Part # 1045680003

$32.99

1

$32.99

BINDER

Part # 131179017227

$3.04

3

$9.12

all_05_ste_stm_kit.jpg

All Balls Steering Stem Bearing Kit - 2001 Honda CR250R

Part # 1005880005

$42.99

1

$42.99

Tusk Billet Aluminum Steering Stem Nut Red - 2001 Honda CR250R

Part # 1435080001

$9.99

1

$9.99

NGK Iridium Sparkplug BR8EIX - 2001 Honda CR250R

Part # 1021740003

$9.99

2

$19.98

BOLT, FLANGE (6X32) (NSHF) (Honda Code 4774196)

Part # 131179003191

$3.02

1

$3.02

Supersprox Rear Aluminum Sprocket 53 Tooth Red - 2001 Honda CR250R

Part # 1261860006

$47.99

1

$47.99

FMF Pipe Spring & O-Ring Kit - 2001 Honda CR250R

Part # 1046880002

$8.99

1

$8.99

WASHER, RADIATOR MOUNTING (Honda Code 1915008)

Part # 131179003637

$1.71

4

$6.84

Polisport Chain Slider - 2001 Honda CR250R

Part # 1150410001

$17.99

1

$17.99

Tusk Gas Tank Vent Valve Red

Part # 1030910002

$6.99

1

$6.99

dun_12_tir_mx51_geo_max_int_rear.jpg

110/90x19 Dunlop MX51 Geomax Intermediate Terrain Tire - 2001 Honda CR250R (Rear)

Part # 1260020018

$83.99

1

$83.99

gal_07_ste_bra_bra_lin_red.jpg

Galfer Front Steel Braided Brake Line Standard Length Red - 2001 Honda CR250R

Part # 1301790017

$58.99

1

$58.99

fmf_08_gol_ser_pip_fat_mot.jpg

FMF Gold Series Pipe, "Fatty Moto" - 2001 Honda CR250R

Part # 1087090055

$224.99

1

$224.99

hel_07_530462.jpg

Helix Racing Products Carburetor Vent Line 1/8"x5' Red

Part # 1086080001

$9.99

2

$19.98

tus_clutch_kit_wsp.jpg

Tusk Clutch Kit With Heavy Duty Springs - 2001 Honda CR250R

Part # 1030680077

Includes:Tusk Clutch Kit (1 per pkg.)Tusk Clutch Spring Set (1 per pkg.)

$54.99

1

$54.99

hel_07_530450.jpg

Helix Racing Products Fuel Line 1/4"x3' Red

Part # 1031490001

$7.99

1

$7.99

sup_08_spr_fro.jpg

Supersprox Front Sprocket 14 Tooth - 2001 Honda CR250R

Part # 1246040036

$19.99

1

$19.99

not_11_pre_oil_fil.jpg

No Toil Pre-Oiled Air Filter - 2001 Honda CR250R

Part # 1159700004

$16.99

1

$16.99

BOLT, FLANGE (6X23.5) (Honda Code 6267702)

Part # 131179003167

$1.33

4

$5.32

all_06_smo_cha_rol_blk.jpg

All Balls Smooth Chain Roller 43mm x 28mm Black - 2001 Honda CR250R (Upper)

Part # 1005870013

$14.99

1

$14.99

BOLT, FLANGE (6X80) (NSHF) (Honda Code 4831715)

Part # 131179006514

$4.32

2

$8.64

pro_08_gri_pil_top_mx_red.jpg

Pro-Taper Pillow Top MX Grips Black/Grey/Red

Part # 1214860001

$11.99

1

$11.99

ebc_07_mxs115.jpg

EBC MXS Brake Pad - Sintered Metal - 2001 Honda CR250R (Rear)

Part # 1045680006

$27.99

1

$27.99

mot_cables.jpg

Motion Pro Terminator Clutch Cable - 2001 Honda CR250R

Part # 1092370014

$24.99

1

$24.99

rk_gb520exw_gold.jpg

RK 520EXW Gold XW-RING Chain 520x114 - 2001 Honda CR250R

Part # 1036470016

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All Balls Swing Arm Bearing Kit - 2001 Honda CR250R

Part # 1005940008

$62.99

1

$62.99

pro_09_mik_hex_mai_jet-2.jpg

Pro X 4/042 Series Mikuni Hex Main Jet 410 - 2001 Honda CR250R

Part # 1260010027

$2.24

1

$2.24

Tusk Neoprene Seal Guards 44-50 mm Long Black - 2001 Honda CR250R

Part # 1096200004

$13.99

1

$13.99

Pro X N224.103 Series Mikuni Pilot Jet 22.5 - 2001 Honda CR250R

Part # 1260040009

$3.69

1

$3.69

Pro X 4/042 Series Mikuni Hex Main Jet 370 - 2001 Honda CR250R

Part # 1260010022

$2.24

1

$2.24

Pro X 4/042 Series Mikuni Hex Main Jet 360 - 2001 Honda CR250R

Part # 1260010021

$2.24

1

$2.24

Pro X 4/042 Series Mikuni Hex Main Jet 390 - 2001 Honda CR250R

Part # 1260010024

$2.24

1

$2.24

BOLT, FLANGE (6X14) (Honda Code 2154672)

Part # 131179004998

$0.87

7

$6.09

SCREW, PAN (5X8) (Honda Code 0331363)

Part # 131179004606

$0.50

1

$0.50

SCREW, PAN (5X8) (Honda Code 4074571)

Part # 131179003412

$1.86

2

$3.72

pro_09_mik_lon_typ_pil_jet_5pk-2.jpg

Pro X N224.103 Series Mikuni Pilot Jet 27.5 - 2001 Honda CR250R

Part # 1260040002

$3.69

1

$3.69

fmf_03_wash_plug.jpg

FMF Wash Plug 25mm-55mm

Part # 1047500001

$4.99

1

$4.99

Pro X 4/042 Series Mikuni Hex Main Jet 415 - 2001 Honda CR250R

Part # 1260010028

$2.24

1

$2.24

COLLAR, TOOL BOX SETTING (Honda Motorcycle Code 2067593)

Part # 131179003124

$3.82

2

$7.64

Pro X N224.103 Series Mikuni Pilot Jet 25 - 2001 Honda CR250R

Part # 1260040001

$3.69

1

$3.69

GUIDE, FR. BRAKE HOSE (Honda Code 2750511)

Part # 131179002509

$11.83

1

$11.83

COLLAR A (Honda Code 6267785)

Part # 131179003710

$2.83

4

$11.32

Pro X N224.103 Series Mikuni Pilot Jet 32.5 - 2001 Honda CR250R

Part # 1260040004

$3.69

1

$3.69

Motion Pro Throttle Tube - 2001 Honda CR250R

Part # 1015250002

$8.99

1

$8.99

SCREW, PAN (5X8) (Honda Code 0145540)

Part # 131179004605

$0.48

4

$1.92

Pro X 4/042 Series Mikuni Hex Main Jet 400 - 2001 Honda CR250R

Part # 1260010025

$2.24

1

$2.24

COVER ASSY., L. CRANKCASE

Part # 131179013360

$36.49

1

$36.49

BOLT, FLANGE (6X23.5) (Honda Code 6267702)

Part # 131179003167

$1.33

4

$5.32

WASHER, CHAIN SLIDER (Honda Code 2142156)

Part # 131179002784

$1.86

2

$3.72

GUIDE, RR. BRAKE HOSE (Honda Code 5245428)

Part # 131179002302

$4.04

1

$4.04

pro_09_mik_lon_typ_pil_jet_5pk-2.jpg

Pro X N224.103 Series Mikuni Pilot Jet 35 - 2001 Honda CR250R

Part # 1260040005

$3.69

1

$3.69

pro_09_mik_lon_typ_pil_jet_5pk-2.jpg

Pro X N224.103 Series Mikuni Pilot Jet 30 - 2001 Honda CR250R

Part # 1260040003

$3.69

1

$3.69

pro_09_mik_hex_mai_jet-2.jpg

Pro X 4/042 Series Mikuni Hex Main Jet 405 - 2001 Honda CR250R

Part # 1260010026

$2.24

1

$2.24

GUIDE, RR. BRAKE HOSE (Honda Code 2465268)

Part # 131179006754

$7.17

1

$7.17

WASHER, PLAIN (5MM) (Honda Code 0692491)

Part # 131179004757

$0.46

1

$0.46

SCREW-WASHER (6X28) (Honda Code 0906115)

Part # 131179004672

$0.50

4

$2.00

SCREW, PAN

Part # 131179010052

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used forks and shock and some other parts but thats mostly it so far and yeah alot of money but i had 2500 and it was either buy a nice new bike or a not so nice and build it up the way I want it :p 

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Ok, gotcha...pull all that old sh!t off....clean it up, put all that new sh!t on....and :ride:

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sadly the forks and shocks still need to be re worked oh and i also bought the wiseco piston kit and bottum end gasket becuase i went through this whole bike but thats part of the 2000

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