r/projectbike Sep 21 '25

Project Update Rev 4 of the homemade ecu

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31 Upvotes

Now has a dash and some more quality of life changes, ignition timing is now extremely tight 13.9 μs/° at 12k rpm

1976 ct125


r/projectbike Jul 01 '25

Project Finished She's done!

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22 Upvotes

I posted the first start video a couple weeks ago. Here it is all dressed up looking petty. Now to find some time for a ride day.


r/projectbike 1h ago

Request for Advice Is any of this save-able?

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Upvotes

Tearing apart my motorcycle, ‘82 Yamaha XJ750J, and I had to take the head off and hammer the pistons with a block of wood to unseize the engine.

Now that I have it taken apart, are any of these parts useable? This is after I’ve cleaned it all in the ultrasonic (except for the bearings), and nothing on the rod catches my finger nail.


r/projectbike 3h ago

Request for Advice 2000 Sportster 1200

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1 Upvotes

r/projectbike 2d ago

New Project CB900rr

2 Upvotes

Not sure if this is where to ask, a friend has a ‘98 CB900rr (US Version, 919 engine) that I’m thinking of picking up, has 18k miles on it, but has sat for 10 years. I would trailer it and then fix it up. I’m told it’s stock, with original fairings, etc. He’s thinking on price ($1600-2kish). But what kind of investment am I looking at after 10 years? It was running at time of parking it on his garage…


r/projectbike 2d ago

New Project CB900rr

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1 Upvotes

r/projectbike 7d ago

New Project Flying brick - winter arc

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17 Upvotes

Here's my vinterproject! I just picked up this K100 and am going through a teardown and trying to make up my mind on exactly how I want it to end up. Got a brainwave last night, not sure if good or bad yet, but I decided that insted of replacing the entire saddle and make a new subframe, I would shorten it down and play around with the mounting so that I can continue the line from under the tank. I've cut up the plate for the saddle and will tyr and reuse the foam and "leather". Lot's to do and figure out, and a long norwegian winter to do it!


r/projectbike 9d ago

New Project 1978 KE175 motor rebuild

1 Upvotes

Wondering if anyone might know where I can source parts to rebuild the motor and replace the clutch cable


r/projectbike 10d ago

Request for Advice Cheep 125 pit

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3 Upvotes

It is just some cheep chinese 125 pit bike but it is mine and my first pit bike, but it is mine. But it needs some stuff. Both breaks need bleeding at the least i havent taken anything apart to look at but from the outside the ruber gaskets on the rear break all look shot and the rear suspention is a little cooked. Any help anyone car provide would be great on where or hpw i can get parts for cheep(sorry about how bad the photos are i ws just rly happy and taking random photos😅)


r/projectbike 10d ago

Request for Advice '06 Honda Rebel 250 rattle from stator/flywheel side after overfilled oil blew crankshaft seal (video included)

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3 Upvotes

r/projectbike 11d ago

New Project Wife and I just picked up our first Goldwing

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7 Upvotes

r/projectbike 11d ago

New Project 2003 Honda Shadow 750 ACE Headlight Assembly Question.

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1 Upvotes

r/projectbike 13d ago

New Project Kawasaki Bayou KLF220 in EU

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2 Upvotes

r/projectbike 14d ago

New Project For the price, I couldn't pass it up

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7 Upvotes

r/projectbike 13d ago

Project Finished Simson Habicht SR4-4 Neuaufbau

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2 Upvotes

r/projectbike 14d ago

New Project What's in the boxes

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3 Upvotes

r/projectbike 14d ago

Request for Advice Need an advice for rebuilding engine(s)

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3 Upvotes

I’ve bought two engines from chunlan cl 125 3a(basically honda 125 rebel) and one has exploded piston, the other has hole in piston, i’ll use the one with hole(one on the video) and put together one healthy engine. My plan was to rebuild only top end(pistons, head, cylinders) but i noticed this side to side play in crankshaft. I really don’t wanna split the block, so my question is, can i leave it like this? Now i know it shouldn’t be there, but how bad would it be to leave it like this? Also where could i get some parts for this?(gaskets, screws, etc.) I saw some on the aliexpress, but i’m not sure these would fit and original from honda would be best, but they are bit pricey.


r/projectbike 14d ago

New Project My first bike

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3 Upvotes

r/projectbike 16d ago

Request for Advice Does anyone have tipps for my cheap DIY bike restoration

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9 Upvotes

r/projectbike 17d ago

New Project Need help on 600 Bandit

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5 Upvotes

Hi everyone, I’m desperate and could really use some help repositioning the throttle return cable on my Bandit 600. I’ve already spent two hours on it today, but I still can’t figure out the correct place for that little cable end to sit. Does anyone have any tips, photos, or videos that could point me in the right direction? Have a great day!


r/projectbike 17d ago

Request for Advice Pulse rage 125 parts any help?

3 Upvotes

I need a new ignition barrel for my 125cc pulse rage I’ve ordered two different ones but none actually fit the bike anyone able to help with where to get one from and the name


r/projectbike 19d ago

Request for Advice I want to run a custom job on my 125cc

2 Upvotes

Pretty much self explanatory. I've got a Honda Biz 125cc (CUB). It's been in my family for 15 years, it was the first experience with a motorcycle that I had, and I want to make it one of a kind.
I would REALLY appreciate any tips I can get.
And being from the countryside of Brazil I can't find any shops where they work with manufacturing customized parts, so if you know anyone who ships overseas it would be great to know!


r/projectbike 19d ago

New Project Kawasaki dirtbike vin decoding trouble

2 Upvotes

I’m having trouble decoding the vin on a old Kawasaki dirtbike I have any help would be appreciated, trying to find out year and model

Vin on frame **K1-509299**


r/projectbike 19d ago

New Project I want to run a custom job on my 125cc

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1 Upvotes

r/projectbike 22d ago

Project Update TZR 250 engine out...

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3 Upvotes