1989 CR250 fork conversion build

JMX247
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JMX247
Edited Date/Time 3/10/2019 5:29pm
I have been building my 89 cr250 for the last year and a half while racing it at the same time, but now is a good time to post little sneak peeks of what I'm doing since Im out recovering from a dislocated shoulder after crashing and breaking this bike.

Slightly bent subframe and a silencer that mounts no more:


Didn't get pictures of the bars or plastics but they were are also bent or broken.

Sneak peek of its slight upgrade:



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BenG
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BenG 3/30/2018 8:39am
3/30/2018 8:39am
Oh man good stuff.
JMX247
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JMX247 3/30/2018 12:07pm
3/30/2018 12:07pm
I will be making another thread of the full bike build once I'm close to finishing it, this bike will have lots of works parts on it by the time I'm done.
Pirate421
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Pirate421 3/30/2018 1:49pm
3/30/2018 1:49pm
Nice! I just finished my 89 and love it. Did you end up powder coating the frame? What forks are those, pumped on this
JMX247
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JMX247 3/30/2018 2:16pm
3/30/2018 2:16pm
Pirate421 wrote:
Nice! I just finished my 89 and love it. Did you end up powder coating the frame? What forks are those, pumped on this
The frame was powdercoated early November last year and the forks are Showa sff-tac from a 2016 crf250r

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JMX247
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JMX247 3/31/2018 9:13am
3/31/2018 9:13am
Next part on the list is a works caliper from Motostuff.


JMX247
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JMX247 3/31/2018 2:01pm
3/31/2018 2:01pm
Made a special bracket for the front plate.


But it's ugly looking when the plate sits this far out.

Slosh 112
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Slosh 112 4/1/2018 10:07pm
4/1/2018 10:07pm
JMX247 wrote:
Made a special bracket for the front plate.[img]https://p.vitalmx.com/photos/forums/2018/03/31/252862/s1200_IMG_2487.jpg[/img] But it's ugly looking when the plate sits this far out.[img]https://p.vitalmx.com/photos/forums/2018/03/31/252863/s1200_IMG_2488.jpg[/img]
Made a special bracket for the front plate.


But it's ugly looking when the plate sits this far out.

a bit??
Smed
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Smed 4/2/2018 1:14am
4/2/2018 1:14am
Drill & tap a 6mm thread in the top triple.
Bearuno
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Bearuno 4/2/2018 1:51am
4/2/2018 1:51am Edited Date/Time 4/2/2018 2:03am
What Smed said - looks like you can happily lift the plate up, and said drilled and tapped hole should be no structural problem at all. You should see the amount of drilled and tapped holes I put into a KTM front end I put on my Honda. Largely for the machined up then bolted on steer stops on the clamp.

Or, Reverse the bracket.

Trim whatever you need to off it so it fits.

You've enough length to the drop, to perhaps put a dog leg in it the put the contact point further back.

A nice bit of aluminium angle would be far nicer, but you know that. Do what you can with the steel (it looks it) bracket, to do the nice aluminium bracket, perfectly.

Even after decades of fabrication / frame making, I'll often do a 'bodge up', with crap materials, to establish a base point for what I Really want out of an item.
danman
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danman 4/2/2018 6:10am
4/2/2018 6:10am
Take the plate you have on there and flip it. You would only have to cut notches so there are little tabs that stick out for the bolt to go through.
I know I'm not explaining it very good, sorry.
JMX247
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JMX247 4/2/2018 7:53am
4/2/2018 7:53am
Thanks for all the replies, drilling and tapping into the top clamp would be the easiest. It's still going to need a small bracket that hangs down for the front plate to bolt up.
JMX247
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JMX247 4/2/2018 10:23am
4/2/2018 10:23am
It's been fixed and looking good.




Also added some factory HRC shroud decals.



The subframe was slightly bent from my crash, so I unbent it. I also needed a new silencer so I got a 92 cr250 silencer with a stinger tip.


Smed
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Smed 4/2/2018 4:10pm
4/2/2018 4:10pm
Yes that looks sweet now.
avmechanic
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avmechanic 4/7/2018 7:37pm
4/7/2018 7:37pm
JMX247 wrote:
It's been fixed and looking good. [img]https://p.vitalmx.com/photos/forums/2018/04/02/253204/s1200_IMG_2497.jpg[/img] Also added some factory HRC shroud decals. [img]https://p.vitalmx.com/photos/forums/2018/04/02/253205/s1200_IMG_2491.jpg[/img] The subframe was slightly bent from my crash, so I unbent...
It's been fixed and looking good.




Also added some factory HRC shroud decals.



The subframe was slightly bent from my crash, so I unbent it. I also needed a new silencer so I got a 92 cr250 silencer with a stinger tip.


Cool. I have a couple of 88's I am working on. First restoration/modification one is just coming together. One question, did that 92' silencer fit on OK? I was considering a NOS 92 I seen here for sale locally and was not sure if I could make it fit. Great looking bike. Looking forward to see it finished.
Greg
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JMX247 4/9/2018 11:22am
4/9/2018 11:22am
JMX247 wrote:
It's been fixed and looking good. [img]https://p.vitalmx.com/photos/forums/2018/04/02/253204/s1200_IMG_2497.jpg[/img] Also added some factory HRC shroud decals. [img]https://p.vitalmx.com/photos/forums/2018/04/02/253205/s1200_IMG_2491.jpg[/img] The subframe was slightly bent from my crash, so I unbent...
It's been fixed and looking good.




Also added some factory HRC shroud decals.



The subframe was slightly bent from my crash, so I unbent it. I also needed a new silencer so I got a 92 cr250 silencer with a stinger tip.


avmechanic wrote:
Cool. I have a couple of 88's I am working on. First restoration/modification one is just coming together. One question, did that 92' silencer fit on...
Cool. I have a couple of 88's I am working on. First restoration/modification one is just coming together. One question, did that 92' silencer fit on OK? I was considering a NOS 92 I seen here for sale locally and was not sure if I could make it fit. Great looking bike. Looking forward to see it finished.
Greg
The 92 silencer fit on perfectly without modifications. the 89 silencer and 92 had a slight difference with mounting points, the 89 was mounted in front of the rear fender using a large spacer behind it to fill the gap whereas the 92 is behind the fender and mounted dirrectly to the subframe.
JMX247
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JMX247 4/9/2018 11:41am
4/9/2018 11:41am
Here is an original with the 89 silencer in front of the rear fender



Vs the 92




DTR830
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DTR830 4/9/2018 1:32pm
4/9/2018 1:32pm
JMX247 wrote:
Next part on the list is a works caliper from Motostuff. [img]https://p.vitalmx.com/photos/forums/2018/03/31/252847/s1200_IMG_2478.jpg[/img]
Next part on the list is a works caliper from Motostuff.


if you didn't order this yet text me 570-606-7687, I can save you some cash
JMX247
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JMX247 4/9/2018 1:52pm
4/9/2018 1:52pm
DTR830 wrote:
if you didn't order this yet text me 570-606-7687, I can save you some cash
Ordered it last week, should be here today or tomorrow.

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DTR830
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DTR830 4/9/2018 3:44pm
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DTR830 wrote:
if you didn't order this yet text me 570-606-7687, I can save you some cash
JMX247 wrote:
Ordered it last week, should be here today or tomorrow.
had a 30% off code
Pirate421
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Pirate421 4/9/2018 4:58pm
4/9/2018 4:58pm
Got any full pics of the bike? When I got mine I was amazed how slim light and fast it was
JMX247
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JMX247 4/9/2018 5:35pm
4/9/2018 5:35pm
Pirate421 wrote:
Got any full pics of the bike? When I got mine I was amazed how slim light and fast it was
I have a full picture of it before I started the fork conversion.


Pirate421
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Pirate421 4/9/2018 6:03pm
4/9/2018 6:03pm
Awesome. I’m debating putting my stock shrouds and graphics back on. Clean look love the gold wheels and the raw pipe i wish I could have found one
avmechanic
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avmechanic 4/9/2018 6:51pm
4/9/2018 6:51pm
JMX247 wrote:
Here is an original with the 89 silencer in front of the rear fender [img]https://p.vitalmx.com/photos/forums/2018/04/09/254544/s1200_IMG_1129.jpg[/img] Vs the 92 [img]https://p.vitalmx.com/photos/forums/2018/04/09/254545/s1200_IMG_2444.jpg[/img]
Here is an original with the 89 silencer in front of the rear fender



Vs the 92




Fantastic. Thanks for that info. I am going to try an fit an aftermarket 92' muffler that I was looking at purchasing.
Greg
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JMX247 4/9/2018 7:35pm
4/9/2018 7:35pm
avmechanic wrote:
Fantastic. Thanks for that info. I am going to try an fit an aftermarket 92' muffler that I was looking at purchasing.
Greg
If your going to use a NOS 92 silencer I would look at pictures of it side by side with a 92 pro circuit silencer just to make sure they look somewhat the same. From pictures the NOS silencer mounts at a slightly different angle than the pro circuit which may have a different outcome on fitment. If the silencer you found is cheap enough I would go for it, I had no idea a 92 silencer would fit until I stuck it on.
JMX247
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JMX247 4/9/2018 7:53pm
4/9/2018 7:53pm
Just received the most expensive brake upgrade I have ever done.





avmechanic
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avmechanic 4/10/2018 8:12am
4/10/2018 8:12am
avmechanic wrote:
Fantastic. Thanks for that info. I am going to try an fit an aftermarket 92' muffler that I was looking at purchasing.
Greg
JMX247 wrote:
If your going to use a NOS 92 silencer I would look at pictures of it side by side with a 92 pro circuit silencer just...
If your going to use a NOS 92 silencer I would look at pictures of it side by side with a 92 pro circuit silencer just to make sure they look somewhat the same. From pictures the NOS silencer mounts at a slightly different angle than the pro circuit which may have a different outcome on fitment. If the silencer you found is cheap enough I would go for it, I had no idea a 92 silencer would fit until I stuck it on.
The Muffler that I am looking at buying is a NOS Answer SA2. I need a Spark arrestor to trail ride my bike but was wanting a more period correct looking muffler than a new FMF or Pro Circuit. I am going to give it a try. Worst case scenario I will have to do a little TIG welding to make it fit. Thanks for the info.
Greg

Looking forward to seeing your finished bike. I really love the 88' 89' Honda 250s.
JMX247
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JMX247 4/15/2018 7:20am
4/15/2018 7:20am
Just received galfers 280mm Tsunami oversize kit.


And a brake line




JMX247
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JMX247 4/20/2018 6:13am
4/20/2018 6:13am
Test fit the caliper and oversized rotor




Next thing on the list is get the front hub powder coated black and lace it up to a vintage gold rim.
Brian_Patterson 4/20/2018 7:26am
4/20/2018 7:26am
I put 49mm Showa conventionally on my 87 they work great. Just got stiffer springs. Getting them more dialed each ride.
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quiknic 4/20/2018 9:56pm
4/20/2018 9:56pm
Brian_Patterson wrote:
I put 49mm Showa conventionally on my 87 they work [img]https://p.vitalmx.com/photos/forums/2018/04/20/256533/s1200_1648B62A_35A0_4D00_90B9_695E7B9493AF.jpg[/img] great. Just got stiffer springs. Getting them more dialed each ride.
I put 49mm Showa conventionally on my 87 they work great. Just got stiffer springs. Getting them more dialed each ride.
Love the bike! 87 CR125 was the first big bike I ever rode but I was still racing 80’s for another few years and never raced it before selling. I would like to build an 87 CR125 someday but first it will be an 89 or 90 CR125.

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