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Discussion Starter #1
I keep seeing TW225's online. Is it a different bike or is it the same!? They all come up with a picture of a TW200.

i Dont get it.....
 

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It should but not many were made, they both have the extended jackshaft.



Ebay USA only has ONE complete TW200 motor for sale. So finding a 225 engine somewhere in Asia would be quite a task indeed.



A long time ago I put a 110 motor in a trail 90 & rejetted. After all my hard work I barely noticed an improvement.
 

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The TW200 and TW225 does have the same engine.



The TW225 engine is the combination of:

- a TW200 crank case and gearing

plus

- XT/TT 225/230 top end (crank shaft, cylinder, piston)



If you want to convert your TW200 to a TW225, you will need these parts:

- sleeve/liner for a Yamaha 225/230 engine (for 70mm pistons)

-> or a XT/TT/TTR 225/230 cylinder

- crankshaft from a XT/TT/TTR 225/230 engine

- piston from:

-> Wiseco 4312M (10.25:1 Comp.; 70.00, 70.50 or 71.00 mm) or

-> Wiseco 4675M (8.7:1 Comp.; 71.00, 71.50 or 72.00 mm) or

-> Woessner piston 8659D (8.7:1 Comp.; 71.00, 71.50, 72.00, 72.50 or 73.00 mm)
 

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The TW200 and TW225 does have the same engine.



The TW225 engine is the combination of:

- a TW200 crank case and gearing

plus

- XT/TT 225/230 top end (crank shaft, cylinder, piston)



If you want to convert your TW200 to a TW225, you will need these parts:

- sleeve/liner for a Yamaha 225/230 engine (for 70mm pistons)

-> or a XT/TT/TTR 225/230 cylinder

- crankshaft from a XT/TT/TTR 225/230 engine

- piston from:

-> Wiseco 4312M (10.25:1 Comp.; 70.00, 70.50 or 71.00 mm) or

-> Wiseco 4675M (8.7:1 Comp.; 71.00, 71.50 or 72.00 mm) or

-> Woessner piston 8659D (8.7:1 Comp.; 71.00, 71.50, 72.00, 72.50 or 73.00 mm)
Gosh darn you guys know your stuff......................... And a"BIG" thanks for sharing with us mere mortals. (o; OMM.
 

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Discussion Starter #7
Awesome thanks for replying guys! And thats cool, when mine needs a rebuild I'll have to convert it to a 225!!!
 

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The TW225 has been around since 2002 and been in production since even now in Japan. Stock not modified and Frankensteined together. You could get a 225 engine for about $312.50 without shipping from japan. You would have to get the electronics too. Sure it can fit no problem in a TW200 frame,but why bother? For the same price you could get a SR 500 engine. If you had the coin you could get a newer SR engine with fuel injection too. They all can be squeezed into the frame. I grew up in Japan. The whole reason behind the TW being below 250cc has to do with their taxes and complicated and bureaucratic crazy definitions of categories between licensing and JCI Japanese Car Inspections. Tricky way of saying another way to tax you. If a bike is below 250cc it does not require inspections in Japan and you pay less taxes. That is why TW's are sooo popular in japan. Also why they love to modify them. If your never gonna get inspected you can do what you want as long as its not too crazy. The police can't even give you a ticket for technical stuff cause you can argue that hey your a policeman not a mechanic or engineer so you don't have the credentials.
 

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Discussion Starter #10
so I looked at the 500. It doesnt look like you can put it in the TW200 frame without cutting the frame...can you?

and same with the 225?... are you able to fit a 225 in the 200's frame without major modifications?
 

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The TW225 has been around since 2002 and been in production since even now in Japan. Stock not modified and Frankensteined together. You could get a 225 engine for about $312.50 without shipping from japan.
from where??
 

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Rising Sun...



Spill the beans!..



Inquiring minds want to know!!



 

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so I looked at the 500. It doesnt look like you can put it in the TW200 frame without cutting the frame...can you?

and same with the 225?... are you able to fit a 225 in the 200's frame without major modifications?
And again:

THE TW200 AND THE TW225 DOES HAVE THE SAME ENGINES!!!!!!!!!

ONLY BORE AND STROKE ARE DIFFERENT!
 

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They are used engines in Japan on Japan Yahoo auctions. You have to use middle men company to bid for you. Sites like JDM Bid ect.. The TW200 and the TW225 are the same engine. Yes its a bigger stroke and bore,but its all Yamaha stock not wiseco or aftermarket parts. The SR500 engine will fit with very little modding. Cut off a couple of tabs and reweld some new ones in. Easy stuff. If you think I don't know what I am talking about fine. What do I know.If you got the info spread it. I can only sharethe knowledge I have nothing more. if you have any questions I will do the best i can to translate them.
 

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Well keep looking for a shipping and ordering service other than Bid JDM they are out there. Ask Osakacustomstyle who he used when he ordered stuff from Japan. There are cheaper options out here for sure.
 

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I kind of feel that way about everything.. If you know a guy who knows a guy, everything is always cheap. TK carb parts shouldn't be harder to get or find than Mikuni, but they are in the USA. Always bugs me knowing it's made out of the same stuff and has to do with supply and demand




Now that I look at SR500 bikes, I just want one in addition to the TW
 
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