87’ CR250 restoration

bonseff
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bonseff 1/15/2019 6:08pm
1/15/2019 6:08pm
Your wheels are going to be so nice. That sunrim logo looks fantastic. Its got a classic feel to it. well done.
1
Brian_Bowles 1/15/2019 10:10pm
1/15/2019 10:10pm
Looking real good!
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Mark_Lynch
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Mark_Lynch 1/17/2019 6:02am
1/17/2019 6:02am
Installed the hub bearings last night. Still need to check the new Buchanan spokes and ream the holes, but getting closer to seeing the wheels come together



1
Brian_Bowles 1/17/2019 8:20am
1/17/2019 8:20am
How hard is it to spoke up the wheels and get the wheel true? I have never done that and have been reluctant to try.

The Shop

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ktm_kev
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ktm_kev 1/17/2019 9:52am
1/17/2019 9:52am
Mark_Lynch wrote:
Radiators before and after rework. Radiators aren’t that hard to bend. Takes time to straighten every fin and you can only work with what you have...
Radiators before and after rework. Radiators aren’t that hard to bend. Takes time to straighten every fin and you can only work with what you have. They straightened decent. Painted later on and installed



Can you elaborate on the process of straightening the radiator?
Mark_Lynch
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Mark_Lynch 1/17/2019 10:47am
1/17/2019 10:47am
Mark_Lynch wrote:
Radiators before and after rework. Radiators aren’t that hard to bend. Takes time to straighten every fin and you can only work with what you have...
Radiators before and after rework. Radiators aren’t that hard to bend. Takes time to straighten every fin and you can only work with what you have. They straightened decent. Painted later on and installed



ktm_kev wrote:
Can you elaborate on the process of straightening the radiator?
It’s pretty crude really, but radiators are inherently weak. You can simply put it in a soft vice and straighten warpage just twisting by hand. Side to side bending can be done by a few good whacks in the right place using a decent piece of wood and a hammer. I know this sounds like I’m a hack, but that’s about it. You can also slip a strong, but thinner strand if wire inside the edge between the fins to pull out a slight bend in the center. It is preferable to use a brass punch hitting on the edge against a hard surface. My radiators don’t have much of an edge like the newer ones, so I used a wire. There are plenty of YouTube videos on fixing bent radiators. Straightening fins just takes a lot of time. You just have to realize you can only do so much with these methods. If you want them perfect, we’ll you either send them out or buy the $100 Chinese ones on eBay....which I here aren’t too bad by the way. Thanks, hope this helps somewhat
ktm_kev
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ktm_kev 1/17/2019 11:39am
1/17/2019 11:39am
Mark_Lynch wrote:
It’s pretty crude really, but radiators are inherently weak. You can simply put it in a soft vice and straighten warpage just twisting by hand. Side...
It’s pretty crude really, but radiators are inherently weak. You can simply put it in a soft vice and straighten warpage just twisting by hand. Side to side bending can be done by a few good whacks in the right place using a decent piece of wood and a hammer. I know this sounds like I’m a hack, but that’s about it. You can also slip a strong, but thinner strand if wire inside the edge between the fins to pull out a slight bend in the center. It is preferable to use a brass punch hitting on the edge against a hard surface. My radiators don’t have much of an edge like the newer ones, so I used a wire. There are plenty of YouTube videos on fixing bent radiators. Straightening fins just takes a lot of time. You just have to realize you can only do so much with these methods. If you want them perfect, we’ll you either send them out or buy the $100 Chinese ones on eBay....which I here aren’t too bad by the way. Thanks, hope this helps somewhat
Sounds like I have a project for this weekend. Thanks Mark_Lynch
1
Brian_Bowles 1/17/2019 4:26pm
1/17/2019 4:26pm
Mark what size fuel line goes from the gas tank to the carburetor?
Mark_Lynch
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Mark_Lynch 1/17/2019 6:11pm
1/17/2019 6:11pm
Brian_Bowles wrote:
Mark what size fuel line goes from the gas tank to the carburetor?
5/16”....SAE30R6.... .look at auto parts stores

Mark_Lynch
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Mark_Lynch 1/18/2019 8:14pm
1/18/2019 8:14pm
Brian_Bowles wrote:
How hard is it to spoke up the wheels and get the wheel true? I have never done that and have been reluctant to try.
I don’t think lacing up will be so difficult. Now truing the wheel might be another story. Just boils down to having the right equipment and knowing where to tighten or loosen. I know there’s a little more to it it, but there’s also plenty of video out there on it. We’ll see I guess......ha
Rupert X
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Rupert X 1/19/2019 10:29am
1/19/2019 10:29am
Drove up to Northern Ohio, picked up an ‘87 donor bike with, what looks like -an 85 or 86 cylinder on it ? Anyway, I need a lot of these parts, but I’ll also have some shtuff for sale. I also got a buttload Of 1989 CR250 stuff and various odds and ends, many of you have enquired about specific items and I will get back to you...
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Rupert X
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Rupert X 1/19/2019 10:31am
1/19/2019 10:31am

Rupert X
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Rupert X 1/19/2019 10:32am
1/19/2019 10:32am

Rupert X
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Rupert X 1/19/2019 10:35am
1/19/2019 10:35am

Rupert X
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Rupert X 1/19/2019 10:37am
1/19/2019 10:37am

Rupert X
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Rupert X 1/19/2019 10:38am
1/19/2019 10:38am

Rupert X
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Rupert X 1/19/2019 10:39am
1/19/2019 10:39am

Pit Row

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Rupert X
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Rupert X 1/19/2019 10:43am
1/19/2019 10:43am
Sorry Mark, didn’t intend to take over your thread , but this is important ( I think hehe)
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Mark_Lynch
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Mark_Lynch 1/19/2019 5:51pm
1/19/2019 5:51pm
Rupert X wrote:
Sorry Mark, didn’t intend to take over your thread , but this is important ( I think hehe) [img]https://p.vitalmx.com/photos/forums/2019/01/19/319135/s1200_477E87E8_369E_421C_A451_364161E607F8.jpg[/img]
Sorry Mark, didn’t intend to take over your thread , but this is important ( I think hehe)
Since you took over my thread, I get first dibs on parts....lol. I’m looking for 19260-ks7-010. It’s a release found inside the right case water pump. If you have a good one, let me know
Mark_Lynch
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Mark_Lynch 1/19/2019 6:42pm
1/19/2019 6:42pm
Rupert X wrote:
Sorry Mark, didn’t intend to take over your thread , but this is important ( I think hehe) [img]https://p.vitalmx.com/photos/forums/2019/01/19/319135/s1200_477E87E8_369E_421C_A451_364161E607F8.jpg[/img]
Sorry Mark, didn’t intend to take over your thread , but this is important ( I think hehe)
Mark_Lynch wrote:
Since you took over my thread, I get first dibs on parts....lol. I’m looking for 19260-ks7-010. It’s a release found inside the right case water pump...
Since you took over my thread, I get first dibs on parts....lol. I’m looking for 19260-ks7-010. It’s a release found inside the right case water pump. If you have a good one, let me know


Release pictured on the left .....19260-ks7-010
Brian_Bowles 1/20/2019 5:49pm
1/20/2019 5:49pm
Mark does your wheel have z spokes? I have a z spikes and wondered where to get replacements or if I my hub had to use z spokes.
Mark Lynch
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Mark Lynch 1/21/2019 7:43am
1/21/2019 7:43am
Brian_Bowles wrote:
Mark does your wheel have z spokes? I have a z spikes and wondered where to get replacements or if I my hub had to use...
Mark does your wheel have z spokes? I have a z spikes and wondered where to get replacements or if I my hub had to use z spokes.
I have new stainless spokes from Buchanan’s. I’m not familiar with Z spokes. Not sure what was on my bike originally. I did remove and keep my front spokes, but cut the back ones out due to the corrosion. Sorry I’m no help on that one
Rupert X
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Rupert X 1/22/2019 7:04am
1/22/2019 7:04am
Rupert X wrote:
Sorry Mark, didn’t intend to take over your thread , but this is important ( I think hehe) [img]https://p.vitalmx.com/photos/forums/2019/01/19/319135/s1200_477E87E8_369E_421C_A451_364161E607F8.jpg[/img]
Sorry Mark, didn’t intend to take over your thread , but this is important ( I think hehe)
Mark_Lynch wrote:
Since you took over my thread, I get first dibs on parts....lol. I’m looking for 19260-ks7-010. It’s a release found inside the right case water pump...
Since you took over my thread, I get first dibs on parts....lol. I’m looking for 19260-ks7-010. It’s a release found inside the right case water pump. If you have a good one, let me know
Mark_Lynch wrote:
[img]https://p.vitalmx.com/photos/forums/2019/01/19/319333/s1200_F6F34AE8_B438_444C_A805_E40F056E9647.jpg[/img] Release pictured on the left .....19260-ks7-010


Release pictured on the left .....19260-ks7-010
Mark, i shall look for that part for you. Will one from an ‘85 or ‘89 motor work ? * where you guys finding the correct blue seat covers ? Check out location of ignition modules on bike I bought ? Did I not get an ‘87 ?
Rupert X
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Rupert X 1/22/2019 7:06am
1/22/2019 7:06am
*Yes, I know it has an 85 engine in it. Does have seemingly correct swingarm and rear disc brake.... just seems weird that the coil and black box location is different ?
Rupert X
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Rupert X 1/22/2019 7:23am
1/22/2019 7:23am

Mark_Lynch
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Mark_Lynch 1/22/2019 3:12pm
1/22/2019 3:12pm
Rupert X wrote:
[img]https://p.vitalmx.com/photos/forums/2019/01/22/319818/s1200_36D0E02F_6A04_4404_9795_E35F26A2A90F.jpg[/img]

I’m no expert by any means, but doesn’t look like an 87’ to me. There are some similarities for sure in these years, but the frame doesn’t look correct along with shock and a few other things. Maybe someone else with more knowledge of the 85’ could chime in.....
Rupert X
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Rupert X 1/22/2019 4:03pm
1/22/2019 4:03pm
I agree something doesn’t seem right, but I just went and looked again, frame seems exactly the same in all respects, EXCEPT where the electrics mount. * Anybody know where you can buy the HRC stickers to place on the shroud ? Also, where to buy the proper blue seat cover ?
Mark_Lynch
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Mark_Lynch 1/22/2019 4:38pm
1/22/2019 4:38pm
Made a little progress the last couple of days. Who ever mentioned the seat cover was fun, you were right. I didn’t buy the stitched one on purpose, but I’m sure it goes on easier. I like the one I have, but very difficult to stretch and make right. Still I didn’t get it perfect, I believe it is slightly farther back than I wanted, but I don’t know if I want to rip it off and start over. Visual progress, but may work on the engine this weekend now that I have some parts in.


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CD
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CD 1/22/2019 8:01pm
1/22/2019 8:01pm
I just stumbled on this post, that is going to be a great looking bike.I just finished this one a few weeks ago and got the first race on it last Sunday. Surprised at how well they handle especially the front end, and power is very smooth. For the frame I found Chevy engine block orange was a dead match for the UFO plastics. Also there are shroud graphics on Ebay for about $15. Don't know if you have ever had to set the power valve linkage, that was a real treat!


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