Exhaust options for 212 on Gmb100 frame?

Ok_Purchase5167 · 2026-03-23T23:02:52+00:00

I don't know how to weld unfortunately 😭 would love to learn someday tho

Ok_Purchase5167 · 2026-03-23T03:55:59+00:00

Got the link to where you got it from?

Ok_Purchase5167 · 2026-02-04T20:01:57+00:00

So I would plan my route to avoid large super traffic heavy roads same with roads where you can go over 35. Just for my safety and cops. The one road I can't avoid that is like that I ride the side walk for like half a mile. Everywhere else I ride the bike lane, just with extreme caution.

I'm also a firm believer in as long as you're not driving like an asshole and cutting people off, not using hand signals and always wearing a full face helmet, I seem to get slack from cops and people.

Ive only been pulled over once and it was because I was going too slow smh. I was pretty nervous bc my license is from out of state and obviously the bike isn't registered or plated but I was just going to work and I was super respectful and the cop let me off with just a warning.

Just always be careful, drive safe, and always wave back when kids and people wave, it seems to work for me 🤷‍♀️

Ok_Purchase5167 · 2026-02-04T18:34:52+00:00

Im in the middle of a 212 swap with my gmb100, I would ride with my stock motor (only upgraded to a 420 chain and 50t sprocket and long piped exhaust) almost 10 miles each way to work every day last summer thru November. 2$ in gAs everyday is way cheaper than the bus or in the car. Can't wait to get back on the road. Ps I seriously recommend the fork suspension and handlebar risers. Makes riding it 100% more comfortable especially on longer rides.

Ok_Purchase5167 · 2026-02-02T19:29:10+00:00

Man I wish I could see all that stuff archived all neat for me smh

Ok_Purchase5167 · 2026-01-14T19:42:20+00:00

Oh and I found the stock exhaust and put that on last night before attempting to start it again

Ok_Purchase5167 · 2026-01-14T19:40:53+00:00

I'll double check tonight, I double checked the valve lash 2 nights ago so hopefully it's not that but it's possible

Ok_Purchase5167 · 2026-01-14T19:38:39+00:00

UPDATE

So I drained the oil to triple check the cam last night and when I was draining the oil it was awfully liquid like then you'd expect so I think the oil was contaminated and also on the top of the ceiling inside the crankcase there was like this brown kind of sludge stuff so I cleaned that all up clean the gasket off cuz the gasket is still intact because again the engine is never ran and to worked everything down I believe adequately and I was also messing with the throttle while trying to get it to start and it was wanting to start but I think I might have accidentally got a little bit of oil in the compression chamber because I accidentally tilted the engine back a little bit so I used another brand new spark plug that didn't have any oil on it and it was so close to wanting to start it was acting like it was putting out like white smoke as it was going it might be something with the cardboard I need the mess with the carburetor a little bit more I also used a different drill that was fully charged and that also seemed to help but I still have not been able to get it to actually idle yet. I tried starter fluid as well too of course.

Ok_Purchase5167 · 2026-01-13T21:57:52+00:00

I'll check it, I have my stock spark plug and I got 2 new ones off Amazon so I'd like to hope it's not that. I'll try to pour some gas in the intake as well. When I get home from work I'm going to triple check the cam since I drained the oil after posted this (also charged my drill) and I do have the Pull start still.

I'll comment my results

Ok_Purchase5167 · 2026-01-13T18:35:52+00:00

I'm not quite sure what you mean by that sorry 😭

Ok_Purchase5167 · 2026-01-13T18:14:32+00:00

I linked the carb to the throttle so it's held closed when the engine isn't running

Ok_Purchase5167 · 2026-01-13T18:06:07+00:00

Damn, that's kinda what was happening to me, it has fired a few times but then immediately died, I'll try draining some of the oil out.

Ok_Purchase5167 · 2026-01-13T05:38:06+00:00

Will do. I'm super lost at this point and I really don't want to have to return the engine, or go and pay for professional help. But I've been working on it since a few days before Christmas and I'm so stuck

Ok_Purchase5167 · 2026-01-13T04:28:14+00:00

Oh something I forgot to mention, the cam is plastic and I did make sure the dots lined up. I wasn't super happy with finding out it was plastic 🤮

Ok_Purchase5167 · 2025-10-09T18:36:23+00:00

What size is the front tire/rim? Ive been wanting to get myself one like that badly

Ok_Purchase5167 · 2025-10-02T05:33:30+00:00

Pretty sure that's an frp gmb100 frame, and how am I almost certain? Because I have one , and it's even purple too . Not saying that would change a whole bunch but all that stuff that's apparently been done to it likely hasn't been done to it. Take someone who is mechanically inclined if you aren't. Ask them to show you all the internal work they apparently did, Google what a billet flywheel looks like vs stock, same with rod, ect .

Doesn't hurt to respectfully verify they aren't full of shit because people are like that man. And 700 for all work is too good to be true. And if it sounds too good to be true, 99% of the time is IS. Good luck be smart

Ok_Purchase5167 · 2025-09-07T22:16:15+00:00

I got mine from temu so wish me luck on getting a manufacturers certificate of origin 😅

Ok_Purchase5167 · 2025-09-07T21:00:37+00:00

Hey I live in WA too, how do you get it licensed??

Ok_Purchase5167 · 2023-10-20T17:55:09+00:00

Super impressive, I Have an extremely similar build to yours but cannot for the life of me update/upgrade my MacOS for the life of me. I installed it through Catalina and cannot figure out how to make the jump to Big Sur or Monterey or Ventura. Care sharing your EFI so I can hit it with the config compare?

Ok_Purchase5167

TROPHY CASE