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Author Topic: 2003 YZ250 Project... need some help and some direction!  (Read 7473 times)

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Offline SSGHopkins

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2003 YZ250 Project... need some help and some direction!
« on: May 04, 2012, 08:22:37 PM »
OK so I havent been on a 2 stroke since LL's back in 1994. I had a horrible crash shortly after and didnt ride for 9 years due to the Ex wife (noticed I said ex lol) I have been riding 4 Strokes since I got back on bikes about 4 years ago. I sold my last 4 stroke (2010 RMZ450) before I left to get stationed in Italy. Before I left I did find an AMAZING deal on a project bike.

The bike. The guy I sold the RMZ to had a 2003 YZ250 sitting in his garage and after some talking I got it for 300 bucks. The only thing really wrong with it was a grenaded top end. Here are some pics.
The Bike

The Cylinder

The Piston

Box o' parts



I have decided to do more than just get the bike ridable, I am going to make it AWESOME.
So far I have gotten the frame powder coated black


I have also rebuilt the bottom end with a weisco crank and bottom end kit.
So now I am trying to decide what to do with the top end, keep it stock or bore it over. Also where is the best (read cheapest) place to get a full bearing kit? I am also looking for some Kite, Talon or DNA hubs, anyone know where to get those the cheapest. My Pegs and grips will come from TORC1 racing (I get a pretty good discount. Any help or advice would be appreciated. Also as I understand it a 250 2 stroke races 250 4 strokes in amateur racing, correct? Also if I go big bore how big until I cant run with the 450's? Thanks everyone. It will be a few months before I can finish since I wont be able to finish until I get back from Italy.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline ford832

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2003 YZ250 Project... need some help and some direction!
« Reply #1 on: May 05, 2012, 01:00:41 AM »
Sweeeeettttttt,I'll give you $400 just the way she sits. ;)
Can't wait to see how it turns out as I'm still mulling over colour combo's for mine.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline cnrcpla

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2003 YZ250 Project... need some help and some direction!
« Reply #2 on: May 05, 2012, 04:07:10 AM »
Nice  :o Can't wait until your done, I love YZ projects  ;D
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline SSGHopkins

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2003 YZ250 Project... need some help and some direction!
« Reply #3 on: May 05, 2012, 09:37:22 AM »
also does anyone know where i can get Yellow plastics for it? I have looked all over and I cant find them
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline TMKIWI

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2003 YZ250 Project... need some help and some direction!
« Reply #4 on: May 05, 2012, 09:49:48 AM »
I think UFO does them. I was looking a couple of years ago.
Some of the part numbers are the same for YZF & YZ.
In 06' Yamaha did the yellow aniversary model. I like the look.
You should be able to make the 06' plastics fit.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline SSGHopkins

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2003 YZ250 Project... need some help and some direction!
« Reply #5 on: May 05, 2012, 12:26:03 PM »
yeah I am going to go for a Hannah look. I will check out UFO, thanks. I do know that Clarke makes a yellow stock sized tank.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline arnego2

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2003 YZ250 Project... need some help and some direction!
« Reply #6 on: May 05, 2012, 09:28:51 PM »
For the BB I'd look for Eric Gorr.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline streaks383

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2003 YZ250 Project... need some help and some direction!
« Reply #7 on: May 07, 2012, 02:28:56 AM »
Second on Eric Gorr, he does the best work and it is very reasonable for what you get.  Even if you don't get a big bore have him do the resleeve and have him port it for how you ride, you will pick up some ponies there.  Also if you are making it awesome and money allows consider sending the crank and transmission parts to micro blue to make them almost completely frictionless, it makes them last longer and it also frees up some power that gets lost in the gears.  Check out G-Force complete wheel sets at rocky mountain, they are lighter than stock and in my opinion look really cool, they say every pound of unsprung weight saved is like saving 3 to 5 pounds of sprung weight.  I can't wait to see it when it is finished!
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline MyckMcClung

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2003 YZ250 Project... need some help and some direction!
« Reply #8 on: May 07, 2012, 06:49:33 PM »
ONE Industries had a Hurricane kit a while back, not sure if they are still available, Clarke plastics make the tank in all colors.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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If a pair of 2" brass balls isn't working, I doubt that the 3" model will make much difference.

Offline SSGHopkins

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2003 YZ250 Project... need some help and some direction!
« Reply #9 on: May 10, 2012, 09:53:17 AM »
Where is the best place to get the cylinder repaired if I leave it stock and don't go big bore?
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline cnrcpla

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2003 YZ250 Project... need some help and some direction!
« Reply #10 on: May 10, 2012, 12:28:23 PM »
I used Millennium Technologies for my cylinder on my YZ. They did a great job on my cylinder.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline SSGHopkins

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2003 YZ250 Project... need some help and some direction!
« Reply #11 on: May 10, 2012, 06:14:21 PM »
Quote from: cnrcpla on May 10, 2012, 07:28:23 PM
I used Millennium Technologies for my cylinder on my YZ. They did a great job on my cylinder.

Contact info?
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline cnrcpla

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2003 YZ250 Project... need some help and some direction!
« Reply #12 on: May 10, 2012, 10:00:59 PM »
Phone: 920-893-5595
Fax: 920-893-4830
Address: 1404 Pilgrim Road ? Plymouth WI 53073 
Site: http://www.mt-llc.com/

« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline SSGHopkins

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2003 YZ250 Project... need some help and some direction!
« Reply #13 on: May 11, 2012, 09:30:27 PM »
Has anyone used US Chrome? They will give me a big discount since I am in the Army.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline SSGHopkins

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2003 YZ250 Project... need some help and some direction!
« Reply #14 on: May 13, 2012, 04:28:21 PM »
Ok what about the 295 kit for this bike? Anyone rode one? I will be racing MX and Hare Scrambles down in Georgia
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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