|
|
Item Posts
Sort Order
|
|
|
 2006 YZ250 Top End Project....
|
Skipper
Addict
| Posts: 4289
| Joined: 01/08
Posted: 07/08/08
07:51 AM
|
|
I just love this thread, so I HAD to bump it at least once this year 
**
Here we go again!
|
|
|
|
|
Posted: 09/12/08
06:26 PM
|
|
I'm guessing that a yz250f is alot more difficult and not at all done the same way... am i right?
|
|
|
|
MJP68
Addict
| Posts: 4079
| Joined: 10/07
Posted: 09/12/08
11:13 PM
|
|
 halfastowens:
I'm guessing that a yz250f is alot more difficult and not at all done the same way... am i right?
you are correct. the 4 stroke is more complicated.
once again great post dave!!
Autismspeaks.org
Gilbert AZ
06yz144,05yz85,02yz85
|
|
|
|
|
|
|
Posted: 03/16/09
08:46 PM
|
|
ic ant say much more than anyone else has said...good job hamblin as i also will be storing it for suture ref..i jsut did mine....yesterday hahah....as i had bottom end complications.....and i DEFINITELY didnt do as much of a job as you did...anywho...amazing thread!! thanks!!
|
|
|
|
|
Posted: 03/24/09
06:58 PM
|
|
Hamblin, and did i say....Top end...wel yea it was sooner than i expected or wanted....im sure i blew my oring...so off the top end comes tonight...im going to do a top end rebuilld...no matter the condition of piston oring etc. so thanks again......your post is amazing and im sure ill have a built by bondi ( haha) engine when im all done... o yea and by the way....im going to get a new ink cartridge b4 i print this out for the files...cuz im sure ill need half one atleast ahha!! Thnx Dave!
" I Aint No Chicken, But Ill Sure Show Ya A Roost!"
03' YZ 125
|
|
|
|
|
Posted: 07/07/09
07:28 PM
|
|
Hey DL. Thanks man. I just spent my night reading this..some parts twice, and looking at all the pics. I have book marked this, along with many other stickies off of this forum, will help me A LOT when I get to getting my bike. Would this be some what the same on a RM125? Or on a YZ125? If it isn't the same, it should be similar in some parts. Great post, great pics, again, like the air filter one, thanks.
>Brad
>Brad
* * * * * * * * * * * * * * * * * * * *
Shift Happens
4 Stroke FTW!
Ontario.
2 2008 Honda CRF 230's!
1 2005 Honda CRF230!
|
|
|
|
DLHamblin
Administrator
| Posts: 4205
| Joined: 03/05
Posted: 07/08/09
03:37 AM
|
|
Smasher:
Hey DL. Thanks man. I just spent my night reading this..some parts twice, and looking at all the pics. I have book marked this, along with many other stickies off of this forum, will help me A LOT when I get to getting my bike. Would this be some what the same on a RM125? Or on a YZ125? If it isn't the same, it should be similar in some parts. Great post, great pics, again, like the air filter one, thanks.
>Brad
The basic process is the same for most 2-strokes, different brands have slighly different powervalve setups.
The YZ125 is easier than my 250 as you don't have to remove the carb (but you do have to swing the radiators out of the way).
I can do a top end on my son's YZ125 in less time than my 250 generally.
.
Dave H 2006 YZ250
(2008 YZ 125 son)
|
|
|
|
|
Posted: 07/08/09
08:17 AM
|
|
Alright, thanks again DL.
>Brad
>Brad
* * * * * * * * * * * * * * * * * * * *
Shift Happens
4 Stroke FTW!
Ontario.
2 2008 Honda CRF 230's!
1 2005 Honda CRF230!
|
|
|
|
|
Posted: 07/30/09
06:57 AM
|
|
BRILLIANT BRILLIANT GREAT JOB!!!!thanks DL very very good pics clear almost seems like its an HD camera. 
--------------------
Autismspeaks.org check it out
--------------------
life in the fast rut!!!!
--------------------
my rides- 2008 yz250f fully modified, use to be j-laws bike
&
IT400 1979 yamaha!!!
--------------------
Home: SO CAL
|
|
|
|
|
Posted: 09/03/09
07:52 AM
|
|
well thanks again dave WOODS just helped me find this thread again.
--------------------
Autismspeaks.org check it out
--------------------
life in the fast rut!!!!
--------------------
my rides- 2008 yz250f fully modified, use to be j-laws bike
&
IT400 1979 yamaha!!!
--------------------
Home: SO CAL
|
|
|
|
DLHamblin
Administrator
| Posts: 4205
| Joined: 03/05
Posted: 09/03/09
08:53 AM
|
|
yz250f4ever:
well thanks again dave WOODS just helped me find this thread again.
I'll be doing another on it this year, plus cleaning and greasing the suspension linkage; I'll try and take some some good photo's of that process as well.
.
Dave H 2006 YZ250
(2008 YZ 125 son)
|
|
|
|
|
Posted: 09/03/09
09:03 AM
|
|
plz do the suspention linkage i want to see that so then i could do my bike ya know.
--------------------
Autismspeaks.org check it out
--------------------
life in the fast rut!!!!
--------------------
my rides- 2008 yz250f fully modified, use to be j-laws bike
&
IT400 1979 yamaha!!!
--------------------
Home: SO CAL
|
|
|
|
Antoloco
New User
| Posts: 35
| Joined: 02/09
Posted: 10/27/09
06:07 AM
|
|
I notice that the new piston is a size B. I was wondering did you measure your bore before buying the piston or did you just guess? I have an 06 and I'm doing the top end soon but dont wanna lose a week of riding while waiting on the piston......but I spose I should just pull the cylinder and have it measured...what do you think?
|
|
|
|
yzrider2
Addict
| Posts: 2702
| Joined: 04/08
Posted: 10/27/09
06:23 AM
|
|
this is very good thread
...................
live fast ride hard
NOR*CAL
YZ 250 
|
|
|
|
DLHamblin
Administrator
| Posts: 4205
| Joined: 03/05
Posted: 10/27/09
06:37 AM
|
|
My cylinder is a "C". The difference between a "A" to a "D" pistons is very very small. Thats why if you go to a Yamaha shop and order a piston kit (piston, rings, wrist pin) it comes with a "B" piston. "B" pistons fall within the clearances on any cylinder thats not worn out.
Since my cylinder was in good shape I did not measure it. If a cylinder appears worn or has no cross hatching (or has been honed) then I would measure it.
.
Dave H 2006 YZ250
(2008 YZ 125 son)
|
|
|
|
|
|
|