MotoHouston.com MotoHouston.com
Register Members List Member Map Media Calendar Garage Forum Home Mark Forums Read

Go Back   MotoHouston.com > General Discussion > Dirtbikes, Mini's, ATV's.....
Forgot info?

Welcome to MotoHouston.com! You are currently viewing our forums as a guest which gives you limited access to the community. By joining our free community you will have access to great discounts from our sponsors, the ability to post topics, communicate privately with other members, respond to polls, upload content, free email, classifieds, and access many other special features. Registration is fast, simple and absolutely free, join our community!

Register Today!

If you have any problems with the registration process or your account login, please contact us.


FREE MH Decals by MAIL!

Advertisement

Reply
Share This Thread: 
Subscribe to this Thread Thread Tools
Old 05-06-2009, 09:58 AM   #1
Jason_Canuck
Senior Member
 
Join Date: Apr 2006
Feedback Rating: (3)
Posts: 3,829

Experience: 6 years

Bike(s):
A black one
and a red one








I know nothing about 2 Strokes

Is there a difference between rebuilding a top end and replacing a top end?
__________________
Vegans are eating the solution to global warming!
Jason_Canuck is offline   Reply With Quote
Similar Topics
Thread Thread Starter Forum Replies Last Post
Honda going 2 strokes again RACER X General Discussion (Moto Related) 11 07-24-2015 06:39 PM
2 strokes.... trooper Dirtbikes, Mini's, ATV's..... 10 10-10-2012 05:08 AM
The future of 2-strokes? dhdrider Dirtbikes, Mini's, ATV's..... 8 11-09-2011 06:22 PM
How well do 2 strokes motard? Intermission Mini's, Motards & Flattrack Racing 6 03-25-2009 02:14 PM
The strokes Hainess Off Topic 1 02-04-2006 05:39 PM
Advertisement
Old 05-06-2009, 10:00 AM   #2
klassik
Senior Member
 
klassik's Avatar
 
Join Date: Feb 2008
Location: Rosharon Tx
Feedback Rating: (2)
Posts: 7,984

Experience: 10+ years

Bike(s):
929
rnz450








not really. i could do it in 1 hour on my rm 125 when i was 13 years old.
klassik is offline   Reply With Quote
Old 05-06-2009, 10:00 AM   #3
klassik
Senior Member
 
klassik's Avatar
 
Join Date: Feb 2008
Location: Rosharon Tx
Feedback Rating: (2)
Posts: 7,984

Experience: 10+ years

Bike(s):
929
rnz450








what you got?
klassik is offline   Reply With Quote
Old 05-06-2009, 10:06 AM   #4
Jason_Canuck
Senior Member
 
Join Date: Apr 2006
Feedback Rating: (3)
Posts: 3,829

Experience: 6 years

Bike(s):
A black one
and a red one








Thanks. Approx cost if I had to replace cylinder, piston, rings, rodbearings, gaskets, and head for a CR250?
__________________
Vegans are eating the solution to global warming!
Jason_Canuck is offline   Reply With Quote
Old 05-06-2009, 10:16 AM   #5
cobrakiller02
Senior Member
 
cobrakiller02's Avatar
 
Join Date: Jan 2009
Location: katy
Feedback Rating: (1)
Posts: 781

Experience: 10+ years
Trackdays: 10+

Bike(s):
To many to list









Buy the parts and some beer and ill do it for ya
__________________
CobraKiller02Sig
cobrakiller02 is offline   Reply With Quote
Old 05-06-2009, 10:19 AM   #6
FastLine
Motorcycle School
 
FastLine's Avatar
 
Join Date: Jun 2005
Location: MSRH GSS TWS (Texas World Speedway)
Feedback Rating: (0)
Posts: 13,881

Experience: 10+ years
Trackdays: 10+

Bike(s):
Instructing
Trackdays
Like
A
Boss






Quote:
Originally Posted by Jason_Canuck View Post
Thanks. Approx cost if I had to replace cylinder, piston, rings, rodbearings, gaskets, and head for a CR250?
somewhere between $100-$150
FastLine is offline   Reply With Quote
Old 05-06-2009, 10:19 AM   #7
klassik
Senior Member
 
klassik's Avatar
 
Join Date: Feb 2008
Location: Rosharon Tx
Feedback Rating: (2)
Posts: 7,984

Experience: 10+ years

Bike(s):
929
rnz450








Quote:
Originally Posted by cobrakiller02 View Post
Buy the parts and some beer and ill do it for ya
werd. lmk if you want some bystanders lol. prolly about 200 at the most for the parts
klassik is offline   Reply With Quote
Old 05-06-2009, 10:26 AM   #8
Jason_Canuck
Senior Member
 
Join Date: Apr 2006
Feedback Rating: (3)
Posts: 3,829

Experience: 6 years

Bike(s):
A black one
and a red one








Thanks again. Here's the deal

Found a Cr250 needing a top end, I wasn't planning to keep engine anyways, because someone here has CR500 engine for sale . I'd like to rebuild the 250 sell it to cover some of the cost for the project.
__________________
Vegans are eating the solution to global warming!
Jason_Canuck is offline   Reply With Quote
Old 05-06-2009, 10:31 AM   #9
klassik
Senior Member
 
klassik's Avatar
 
Join Date: Feb 2008
Location: Rosharon Tx
Feedback Rating: (2)
Posts: 7,984

Experience: 10+ years

Bike(s):
929
rnz450








Quote:
Originally Posted by Jason_Canuck View Post
Thanks again. Here's the deal

Found a Cr250 needing a top end, I wasn't planning to keep engine anyways, because someone here has CR500 engine for sale . I'd like to rebuild the 250 sell it to cover some of the cost for the project.
i dont think anyone would really want it. not hatin just sayin that they are so cheap to rebuild.
klassik is offline   Reply With Quote
Old 05-06-2009, 10:32 AM   #10
GABRIEL
Senior Member
 
GABRIEL's Avatar
 
Join Date: Jan 2007
Location: SW/SE Houston
Feedback Rating: (14)
Posts: 7,184

Experience: 1-3 months











Quote:
Originally Posted by Jason_Canuck View Post
Thanks. Approx cost if I had to replace cylinder, piston, rings, rodbearings, gaskets, and head for a CR250?
over 300 for the cylinder, 100 for a new head, 100 for a new piston. But the work is easy to do your self.
GABRIEL is offline   Reply With Quote
Old 05-06-2009, 10:33 AM   #11
GABRIEL
Senior Member
 
GABRIEL's Avatar
 
Join Date: Jan 2007
Location: SW/SE Houston
Feedback Rating: (14)
Posts: 7,184

Experience: 1-3 months











Info on the cr500 if you pass it up.
You could put the 500 in the 250 frame.
GABRIEL is offline   Reply With Quote
Old 05-06-2009, 10:34 AM   #12
klassik
Senior Member
 
klassik's Avatar
 
Join Date: Feb 2008
Location: Rosharon Tx
Feedback Rating: (2)
Posts: 7,984

Experience: 10+ years

Bike(s):
929
rnz450








Quote:
Originally Posted by GABRIEL View Post
Info on the cr500 if you pass it up.
You could put the 500 in the 250 frame.
yep. thats what service honda does. they take 500 motors slap em in 250 frames and sell armstretchers
klassik is offline   Reply With Quote
Old 05-06-2009, 10:36 AM   #13
switch
two fifty
 
switch's Avatar
 
Join Date: Jul 2008
Feedback Rating: (0)
Posts: 7,237

Experience: 4 years
Trackdays: 10+











Quote:
Originally Posted by cobrakiller02 View Post
Buy the parts and some beer and ill do it for ya
can you also fix aj's 90? he'll buy beer!
__________________
CMRA #250
"Me? I stand for uncertainty, insecurity, bad taste, fun, and things that go boom in the night."
switch is offline   Reply With Quote
Old 05-06-2009, 10:37 AM   #14
Jason_Canuck
Senior Member
 
Join Date: Apr 2006
Feedback Rating: (3)
Posts: 3,829

Experience: 6 years

Bike(s):
A black one
and a red one








Do your homework, . I said its for sale on here.

And yes, I was planning a CR500AFC, maybe even in motard trim.

I could just rebuild the 250 and play with it.
__________________
Vegans are eating the solution to global warming!
Jason_Canuck is offline   Reply With Quote
Old 05-06-2009, 12:34 PM   #15
cobrakiller02
Senior Member
 
cobrakiller02's Avatar
 
Join Date: Jan 2009
Location: katy
Feedback Rating: (1)
Posts: 781

Experience: 10+ years
Trackdays: 10+

Bike(s):
To many to list









Quote:
Originally Posted by switch View Post
can you also fix aj's 90? he'll buy beer!

Think were doing it sunday
__________________
CobraKiller02Sig
cobrakiller02 is offline   Reply With Quote
Old 05-06-2009, 01:06 PM   #16
Racer997
Racer, Rider, Shooter
 
Racer997's Avatar
 
Join Date: Oct 2007
Location: 500 yards away...and watching you in the crosshairs...
Feedback Rating: (6)
Posts: 3,872


Bike(s):
BMW Boxer Cup
KTM 450 SMR
Some Yamaha TTR 125Ls
Lackierwarenfabrik Mg42
Valmet M76






http://www.motohouston.com/forums/sh...ad.php?t=91957

CR500 engines ain't cheap. Check eBay and see. Or you can ask me because I've bought and sold them before. Karts, AF projects, even SS roadracers keep demand pretty high.

It's gonna cost more than $150 to rebuild your 250, Jason. In 2007, the last time I bought a Wiseco forged 250 piston and rings, it was dealer priced at $88.00. Costs more now. It's not fair to compare prices between a 500 and 250, but here's a taste: the dealer cost for this 500 piston and rings was about $138.00. My cost for the wrist pin was $11.80. Retailers on eBay bear this pricing info out, too.

Also note that 250s (from the 1980s up) have Nikasil cylinders. They need to be sleeved or replated when repair / replacement is needed, assuming you need that. It should be noted that 500s have iron bores and can can be bored oversize.

Should you decide you want to rebuild your 250, the actual labor is easy. I can recommend a friend's machine shop for sleeving if you want to go that route.
__________________
Supplying avatars to MH track guys since 2008.
Racer997 is offline   Reply With Quote
Reply


Thread Tools

Advertisement


All times are GMT -5. The time now is 03:16 PM.


MotoHouston.com is not responsible for the content posted by users.
Privacy Policy