1st Rebuild - RM 250 2001 Rebuild-Lucky As a Duck.

MnxTT
Profile picture for user MnxTT
Posts
18
Joined
4/14/2013
Location
Highland, CA US
MnxTT
Edited Date/Time 3/13/2014 1:08pm
My first Dirt Bike bought this bike November 2012 from 1st owner, never rebuilt, put another 10 hours before this rebuild.

RM 250 2001- Mostly Stock
Race Tech Springs Front Rear for 210 lb's
FMF Fatty Pipe and Silencer
Compression was at 125 PSI
Smoked A lot of White Puffy's
Lots of Spooge
Stock Needle
Clip on 3rd from top.

Bought:
Reed's
Carburetor Vent Hose's
Silencer Packing
NGK Spark Plug
Radiator Hose's
Wiesco Full Top-End Kit.



Left Side Motor







WTF! How? When? It Still Ran with this monstrosity? this happened on the exhaust side, so this piece must have blew through the pipe. I checked the pipe and no rattling or pieces.

I remember the 3rd time running this bike in the high-desert, I was WOT in 5th for about 10 Seconds and Poof! Pop! Bunch of black smoke and the bike hiccup'd ...this must have been it. but it still ran...took it to Glen Helen more the 4 times and milestone more the 6 times after this. Steve McQueen was looking out for me....WoW



Cylinder was fine No scratches no scuffs (note the dark spot, this was oil i did not wipe off)







I Seriously Dodge a Canon here!







|
crashnburn11 3/8/2014 6:25am
3/8/2014 6:25am
Did you put in a new crank or at least check the big end bearing? Would be a good idea in case a little debris from the piston found its way down there and was wearing it a bit, on top of having never been rebuilt.
markit
Profile picture for user markit
Posts
2641
Joined
1/10/2013
Location
Bogalusa, LA US
markit 3/8/2014 9:41am
3/8/2014 9:41am Edited Date/Time 3/8/2014 9:41am
You know if it's smoking it needs rings? Does it have any powerbands??
MnxTT
Profile picture for user MnxTT
Posts
18
Joined
4/14/2013
Location
Highland, CA US
MnxTT 3/8/2014 1:19pm
3/8/2014 1:19pm
crashnburn11 wrote:
Did you put in a new crank or at least check the big end bearing? Would be a good idea in case a little debris from...
Did you put in a new crank or at least check the big end bearing? Would be a good idea in case a little debris from the piston found its way down there and was wearing it a bit, on top of having never been rebuilt.
No Particles, Main bearing is good. Cylinder has no indication of any piece's ever blowing by the rings.

Thanks for the insight crash.
MnxTT
Profile picture for user MnxTT
Posts
18
Joined
4/14/2013
Location
Highland, CA US
MnxTT 3/8/2014 1:22pm
3/8/2014 1:22pm
markit wrote:
You know if it's smoking it needs rings? Does it have any powerbands??
I do now, Powerband was fine it still had lot's of power but it did not hit like i'm sure it will with a new piston and reeds.

The Shop

See All »
DBerg
Profile picture for user DBerg
Posts
361
Joined
10/10/2010
Location
San Marcos, TX US
DBerg 3/8/2014 1:47pm
3/8/2014 1:47pm
Whew, that's pretty nuts man. Glad that didn't pinball around in there and destroy the motor. Good looking bike though!
MnxTT
Profile picture for user MnxTT
Posts
18
Joined
4/14/2013
Location
Highland, CA US
MnxTT 3/8/2014 4:51pm
3/8/2014 4:51pm
DBerg wrote:
Whew, that's pretty nuts man. Glad that didn't pinball around in there and destroy the motor. Good looking bike though!
Thanks Berg...Yes, I should have done this the first day I brought it home. Let this be another Lesson.....When In Doubt...Change it Out!!!Blink
Benton713
Profile picture for user Benton713
Posts
95
Joined
12/9/2013
Location
Foley, AL US
Benton713 3/9/2014 8:31pm
3/9/2014 8:31pm
Where is your CDI box located on yours in air box
MnxTT
Profile picture for user MnxTT
Posts
18
Joined
4/14/2013
Location
Highland, CA US
MnxTT 3/13/2014 1:08pm
3/13/2014 1:08pm
Benton713 wrote:
Where is your CDI box located on yours in air box
The CDI is in the AirBox.

Post a reply to: 1st Rebuild - RM 250 2001 Rebuild-Lucky As a Duck.