1978 rm250C2 restoration

tomm55x
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tomm55x 2/26/2017 9:19am
2/26/2017 9:19am
Well to my surprise a lot of OEM parts are available for this bike still !! I have everything I need to complete the swingarm. What I couldn't find OEM I did find through ebay from RCM manufacturing, which by the way produces some really nice stuff for this bike at good prices as far as I am concerned !!

tomm55x
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tomm55x 2/26/2017 9:27am
2/26/2017 9:27am
AHHH that dirty old frame....after looking it over and seeing if it was bent or cracked it was time to address this greasy son of a gun !! before-



And after-








ATKpilot99
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ATKpilot99 2/26/2017 12:23pm
2/26/2017 12:23pm
tomm55x wrote:
AHHH that dirty old frame....after looking it over and seeing if it was bent or cracked it was time to address this greasy son of a...
AHHH that dirty old frame....after looking it over and seeing if it was bent or cracked it was time to address this greasy son of a gun !! before-



And after-








Nice work. I'm looking forward to seeing the finished product. I think the blue frame will look pretty cool.

The Shop

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tomm55x
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tomm55x 2/27/2017 4:03am
2/27/2017 4:03am
Thank you!! I figured I would make it stand out a bit.
riv187
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riv187 2/27/2017 4:40pm
2/27/2017 4:40pm
I raced a 78 RM125 back in 84-85. I repainted my frame a similar blue cause it was the color for 85s. So it is true post vintage to do that Wink

tomm55x
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tomm55x 2/28/2017 3:51am
2/28/2017 3:51am
That looks good, glad I did the blue frame!
ATKpilot99
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ATKpilot99 2/28/2017 4:30am
2/28/2017 4:30am
Makes me want to find one. I had one in the early 80s
Byron16x
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Valley Springs, CA US
Byron16x 2/16/2019 4:51pm
2/16/2019 4:51pm
Hello all! Ive had a 78 rm250 c2 in my shop for a few years and im wanting to get rid finally but i dont really know what to price it or if its even worth fixing up. Any idea where i could post it and for about how much? Its not in amazing shape and im tempted to just part it out but dont really have the time.
riv187
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riv187 2/16/2019 6:12pm
2/16/2019 6:12pm
tomm55x , Did you ever put your 78 back together?
tomm55x
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tomm55x 2/17/2019 4:53am
2/17/2019 4:53am
riv187 wrote:
tomm55x , Did you ever put your 78 back together?
I have not. It is something I do want to finish, life kinda got stalled out, I do plan to get back at it at some point once funding allows me too.
riv187
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riv187 2/17/2019 5:45am
2/17/2019 5:45am
riv187 wrote:
tomm55x , Did you ever put your 78 back together?
tomm55x wrote:
I have not. It is something I do want to finish, life kinda got stalled out, I do plan to get back at it at some...
I have not. It is something I do want to finish, life kinda got stalled out, I do plan to get back at it at some point once funding allows me too.
I understand. If something changes,,,I PMed you my phone and email. Bringing old bikes back to life for my own collection is my passion.
mx900
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Decatur, IL US
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mx900 7/9/2019 4:42pm
7/9/2019 4:42pm
What fork seals are best for the C2? How about weight of fork oil and level?
ryanc92
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Enterprise, AL US
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ryanc92 5/1/2024 8:00am
5/1/2024 8:00am
wolfy0067 wrote:
I have restored a couple for racing, engines can be pretty easily modified for more power, lower the intake port, carefull widening and cleanup of the...
I have restored a couple for racing, engines can be pretty easily modified for more power, lower the intake port, carefull widening and cleanup of the exhaust port, reeds or reed block.

83/84 front forks duel pull brakes, I still have a complete setup available. I like to install the metal RM125 tank, pretty simple mod to make it fit.

Strip the frame have all weld adressed

I have a post showing cylinder mods and tank on this site.

Good luck

Do the 82/83 front forks just bolt straight up to the 78.5 C2 as in the stem work? Or do the clamps need bored out?

wolfy0067
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wolfy0067 5/1/2024 5:34pm
5/1/2024 5:34pm

No, I believe I used the 82 triple clamps. All balls has the bearing conversion kits

randbagger
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Costa Mesa, CA US
randbagger 5/3/2024 8:20am
5/3/2024 8:20am

My 79 Suzuki RM 250 left me with an impression that still lasts today. Rear speocket bolts came loose. Mounting lugs on hub broke off. New hub time. Now every moto from day 1 gets red loctite on the rear sprocket bolts. Never an issue since. 

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Pit Row

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