98 YZ250/05 KX250 2 Stroke Nationals Project

Edited Date/Time 2/21/2021 5:08pm
Decided it was time to finally start a build thread for this.
We got the bike for $500 from a family friend back in 2013. It was pretty much stock with new plastic.

I decided to go with an updated front end. Got 07 YZ250F clamps and had a local shop press the old stem into the new clamps. Then bought a set of 05 YZ forks from eBay for $200. They ended up being in great shape! Seals were leaking so I took them to my good friend Brian over at N2Dirt along with the shock. Other than the leaking seals everything else was great and front and rear are set up for my weight.

I ended up getting a 2005 YZ250 2 years ago. Some of you have seen the build thread for it, it was my baby!! Well, I took the forks off of this bike and put them on the 05 because they were already set up, and they were damn good!! Brian did an awesome job! Unfortunately, I sold that 05 about a year ago and never swapped the forks back. So now I need to have these forks done up by Brian.

I also had some trouble with the stock carb on this bike! That stupid thing wouldn’t run right no matter what I did to the jetting. Ended up finding a carb from a 99 YZ250 on eBay and through it on. It immediately ran better! Also put a new FMF fatty on. Tried finding a raw pipe, but could not find one anywhere. If you know of one in good shape, please let me know!

Anyways, ended up going with the 06-09 front fender and number plate. Ended up switching the front number plate to the one I took off of my 2005. I personally like the look a bit better. I was also able to take the stock front wheel from my 2005 and put it on the 98 so everything just fit a little better. I still have a ways to go and a bunch of plans for this bike and progress will be slow as I work my regular job, live the family life and work on other bikes for friends.

Anyways, here are some photos of her!



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sandman768
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5/14/2020 5:32am
500.00 for that is a steal! Good luck with the build!
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FWYT
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5/14/2020 9:14am
Sweet!
1
5/14/2020 10:06pm
sandman768 wrote:
500.00 for that is a steal! Good luck with the build!
Thanks man! I have a few different ideas for it. I’d love to do an MC tribute, but I also really want to do a Bradshaw tribute. Both were two of my favorite riders growing up. Right now I’m leaning more Bradshaw.

The Shop

Chance1216
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5/15/2020 7:38am
Those were nice looking bikes for sure. Very distinguished.
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500crazy
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5/15/2020 2:21pm
Very nice mattyhamz2, great score for $500. The 96-98 were great looking bikes.
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sandman768
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5/16/2020 10:52am
I just bought a very nice Pro Circuit old school silencer for the 98 250. Now I have to find one 😂
1
5/16/2020 10:55am
sandman768 wrote:
I just bought a very nice Pro Circuit old school silencer for the 98 250. Now I have to find one 😂
Let’s see it!!
sandman768
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5/16/2020 3:07pm
mattyhamz2 wrote:
Let’s see it!!
I will post it when I get it!
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5/18/2020 11:37am
Mini update

The wheel currently on the bike is from the 05 I had. Wheel bearings were gone! Thankfully, before I had the 05 wheel, I put new wheel bearings in the original front wheel from this bike. Well, I checked part numbers and they were the same!! So, last night I popped the new bearings out of the original wheels and slapped them in the 05 wheel!

I know it's a baby update, but it's progress lol. I also just ordered a white rear fender this weekend!!! Finally decided on a Bradshaw tribute type of build. Can't wait to get with the boys over at Factory Effex and get the graphics designed and printed.
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5/19/2020 1:41pm
mattyhamz2 wrote:
Let’s see it!!
sandman768 wrote:
[img]https://p.vitalmx.com/photos/forums/2020/05/19/428249/s1200_DCA5BD95_6C93_44D2_B933_E1AAE62F1AB3.jpg[/img]

She's beautiful
sandman768
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5/19/2020 2:00pm
mattyhamz2 wrote:
She's beautiful
I have been buying up nice condition certain parts for 90”s bikes.. I figure if I don’t use them myself, I can offer them to guys that like to build bikes like I do. Chances of me finding a nice 98YZ250 seem slim right now. What I was shocked to see is that it looks like the 96,97 & 98 all have different silencers?
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5/19/2020 4:08pm
mattyhamz2 wrote:
She's beautiful
sandman768 wrote:
I have been buying up nice condition certain parts for 90”s bikes.. I figure if I don’t use them myself, I can offer them to guys...
I have been buying up nice condition certain parts for 90”s bikes.. I figure if I don’t use them myself, I can offer them to guys that like to build bikes like I do. Chances of me finding a nice 98YZ250 seem slim right now. What I was shocked to see is that it looks like the 96,97 & 98 all have different silencers?
Pro Circuit lists everything really weird. It's confusing.

The one thing I want for this bike more than anything, is a raw pipe. I can't find one at all. I've asked PC and FMF if they could make one and just not nickel plate it, but both answered with the, "well we never made them for X bike that way, so no."
bugnboo
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5/19/2020 9:02pm
Nice bike
I bought a 98 Yz 250 new,been with a Yamaha ever since...
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5/19/2020 9:26pm
bugnboo wrote:
Nice bike
I bought a 98 Yz 250 new,been with a Yamaha ever since...
Thanks!
You really can’t go wrong with Yamaha, especially their 2 strokes
450exc115
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5/20/2020 6:52am
98s were good bikes. I'm about to get mine back after selling it to a friend 20 years ago.. Should be fun to go through it and then race it again. Smile


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5/20/2020 9:11am
450exc115 wrote:
98s were good bikes. I'm about to get mine back after selling it to a friend 20 years ago.. Should be fun to go through it...
98s were good bikes. I'm about to get mine back after selling it to a friend 20 years ago.. Should be fun to go through it and then race it again. Smile


That's awesome!!
jacko337
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5/20/2020 11:44pm
mattyhamz2 wrote:
Let’s see it!!
sandman768 wrote:
[img]https://p.vitalmx.com/photos/forums/2020/05/19/428249/s1200_DCA5BD95_6C93_44D2_B933_E1AAE62F1AB3.jpg[/img]

mattyhamz2 wrote:
She's beautiful
My god i need one of those!
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sandman768
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5/21/2020 4:24am
jacko337 wrote:
My god i need one of those!
If I can’t find a bike to put it on, I will offer it on this site first...
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450exc115
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5/21/2020 4:32am
jacko337 wrote:
My god i need one of those!
sandman768 wrote:
If I can’t find a bike to put it on, I will offer it on this site first...
I was watching that for a while. Just couldn't pull the trigger not knowing when I would get my bike back. I had a Noleen pipe and stock silencer. IMO stock was fine but the Noleen pipe ripped! I know I put the stock back on when I sold it I just hope I gave him the dented Noleen pipe with it!
sandman768
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5/23/2020 7:48am
450exc115 wrote:
98s were good bikes. I'm about to get mine back after selling it to a friend 20 years ago.. Should be fun to go through it...
98s were good bikes. I'm about to get mine back after selling it to a friend 20 years ago.. Should be fun to go through it and then race it again. Smile


mattyhamz2 wrote:
That's awesome!!
The GP racing suspension decal on the forks....👍 Rob Mann. Good guy, he lived not far from me, he would service my suspension while I waited. He got out of bikes all together....too bad he had my 99,2000& 2001 YZ”s dialed in.
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450exc115
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5/23/2020 8:45am
Yeah Rob was ahead of his time. Probably got burnt out with all the meatballs demanding perfection but not knowing how to set sag. Lol. His was by far the best I tried at the time. I hope to get the old girl back this week or next. Smile
5/24/2020 10:09am
450exc115 wrote:
Yeah Rob was ahead of his time. Probably got burnt out with all the meatballs demanding perfection but not knowing how to set sag. Lol. His...
Yeah Rob was ahead of his time. Probably got burnt out with all the meatballs demanding perfection but not knowing how to set sag. Lol. His was by far the best I tried at the time. I hope to get the old girl back this week or next. Smile
Post some pics when you get it!

Are you going to do a build thread for it?
5/24/2020 3:08pm
Tiny updates. Got a white rear fender and new grips. It’s better than nothing! Lol.
Should have some more updates in the next couple weeks.



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5/26/2020 6:52pm
Excellent work, and excited to see the finished bike! I built one a few years ago. Thanks for the info about the 99’ carb. Like you, I also searched far and wide for a raw pipe without any luck. If you find an extra, let me know. BTW, you can race a 98’ in the non-current class at most vintage races. That was the motivation behind my build.

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5/27/2020 9:34am
Kickstand wrote:
Excellent work, and excited to see the finished bike! I built one a few years ago. Thanks for the info about the 99’ carb. Like you...
Excellent work, and excited to see the finished bike! I built one a few years ago. Thanks for the info about the 99’ carb. Like you, I also searched far and wide for a raw pipe without any luck. If you find an extra, let me know. BTW, you can race a 98’ in the non-current class at most vintage races. That was the motivation behind my build.

Thanks! I can't wait to get it completely finished!

Yours looks awesome! I've seen a handful of guys that were able to find raw pipes for their 96-98's, but they were super hard to find from what they said. Probably cost a good chunk too. I've thought about possibly taking a 99+ pipe and cutting the part that mates with the cylinder off and welding it to the piece from a 98 pipe, but I don't know if it would be worth it. I still have the stock pipe and might send it to PipeRepair in Oregon to have them fix the dents and do the raw finish on it. Need to talk to a few local places about taking the nickle plating off of the FMF as well.

It really is amazing that FMF and PC aren't able to take a freshly finished pipe and just not have it plated for the guys that want one.
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6/1/2020 8:22pm
No updates on the bike itself, but a date for the 2stroke nationals has been going around! We decided we are going to race it! My dad is going to rebuild his 2005 KX250 and race as well. So with the decision to race the 2stroke nationals, we are going to get everything together a lot sooner than I originally planned!! Pretty stoked!! Planning on ordering the seat cover this week and graphics in the next week or two.
450exc115
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6/1/2020 8:45pm
That should be fun. I was able to get the bike over the weekend. Looked like a 20 year later version of the picture. Had some stuff on it that I don't remember including having Craig at Ccycle go through the suspension and add his ultra adjuster.

The plan is to go through it but it will be a slow process. Need to finish a 77 RM 125 and go through last years race bike the 81 YZ 465.


2
450exc115
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Hebron, CT, USA
6/1/2020 8:50pm
Nothing like finding some period mods you can't get anymore. Like a first generation vforce delta valve. Now to just find the matching Noleen pipe for that silencer!





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