Registering a Custom - 360 engine on a 120 frame

pfft

New Member
Hey guys.

I've acquired bits and pieces of 2 motorcycles from my uncle, which are a 73 DT360 and a 70 TC125. Both are incomplete and missing bits and bobs.
I'm 16 and have no experience with building anything but a bicycle, and don't have the equipment or the space to be restoring either of these bikes myself.

I'm no millionaire but have managed to saved a bit of money and would like to get a bike on the road before the summer is over. From what my uncle tells me, the DT's engine is working just fine but the TC needs a lot of work done. It has seized and he said something has snapped (apologies I do not know the name of the part) and he cannot get it out.

What I really want to do is get the 360 into the TC frame.
Obviously I'll be needing work done on the frame for this to work, and then everything rewired.

What I would like to know is whether I will be able to get it registered with mismatching frame/engine numbers. - Is it possible? If so, how much of a pain would it be? The bottom line is that in Australia, it seems quite difficult to source the right parts for VMX bikes or any vintage motorcycle for that matter, so having a perfectly functioning engine seems to be the better solution.. Or I just like the idea of having more displacement. We are all boys here, I hope you all agree.

Any info would be appreciated. I live in NSW.

Thanks in advance guys.

Al
 
The 360 motor is junk. Just break it down, sell it as parts or scrap it. 350 motors are more reliable.
 
the 360 motor is what yamaha used as a base for the YZ360 it is far from junk
but yeah it is worth good money in parts or whole if running and will never fit in a tc120 frame anyway
 
pfft said:
What I would like to know is whether I will be able to get it registered …

Welcome to DTT!

Registration in NSW would be next to impossible. Even if you had paperwork covering previous registration of the bikes there is no way they are going to allow a 360 to be used in a 175 frame without extensive strengthening and engineering certification.

It would be way cheaper to do as suggested - sell off what bits you can and buy a running bike. Without experience, equipment, and space you face an impossible task to combine these two bikes.

pfft said:
We are all boys here, I hope you all agree.

You had better hope that none of the female members of DTT don't read this thread, they may have something to say about your assumption!

Crazy
 
What you need to do is contact a signatory engineer. They are the ones authorized by you local traffic authorities to sign off on these type of conversions.
Here in Victoria, VicRoads has a list of them. Give one a ring and discuss what you want to do and then you'll know where you stand. I've been down this path and have legally put a 600cc single in my cb360.
Lots of red tape and some common sense got it through.
Good luck.
 
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