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Discussion Starter #1
I'm looking for a carb for a TTR230. Can a TW200 carb be used ??? TTR230 carb stock is 26mm... I know TW200 is 28mm.....Thanks in advance
 

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Hi oldschool6, and welcome to the forum!

Here is what I can tell you. I have transplanted both TTR225 and XT225 engines into TW200's and have successfully utilized the TW200 carbs in both instances using the TW intake manifold and airbox boots.

I know that the TTR225 carb has larger input and output port diameters than the TW and is physically much larger than the TW's carb, so I am sure that a TW carb would fit into the area available on the TTR. I also know that a TW intake manifold will bolt right up to a TTR225 and an XT225 cylinder head. Where I believe you will have problems is mating the TTR airbox to the TW carb, both in terms of diameters and the distance/orientation between the TTR airbox and the TW carb.

I hope this helps, and good luck!

Brian

p.s. The below pictures illustrate a TTR225 carb/airbox boot/intake manifold (on the left) and a 2001+ TW200 carb/airbox boot/intake manifold (on the right).









 

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Discussion Starter #3
Maybe I misunderstood you or vice versa.

I need a carb that will work on a 2005 TTR230....Do you know if EITHER a TW200 carb or a TTR225 carb will work ?????? Maybe I'm having a senior moment :eek:
 

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It is my understanding that in 2005, Yamaha re-branded the TTR225 as the TTR230. There were no changes to the engine, it remained essentially the same basic 223cc air cooled, single overhead cam, 2 valve, 4 stroke engine that was used in the earlier TTR225's and XT225's. All of my comments related to the TW200 carb and TTR225/XT225 engines should apply to your TTR230, and yes, a TTR225 carb should work fine in your TTR230.
 

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As stated by TW-Brian the TTR225 & TTR230 share the same 223cc motor.
I noticed no discernible difference between the heads when I swapped a 223cc TTR engine for the TW200's engine.
I also am using the stock '03 TW carb and manifolds without modification on that 223cc TTR225 engine.
As such is seems logical that if an intake mod can be made to work on a TW 200 engine it can be made to work on a TTR 225 or TTR230 engine.
Mating TTR airbox to TW or Chinese carb might require creativity.
 

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Thanks I appreciate your help
You're welcome.

Thanks I appreciate your help will the knock offs on ebay work well even though the years are 99-04
I have no experience with these TTR knockoff carbs so I don't know how well, or if they will even work for you. Most knockoff carb do require at least some degree of futzing around with in order to get the throttle cables to mate up and work properly.

It shows me the ebay ones are not compatible to 2005 TTR230
You can't always believe everything on the internet.

do you know first hand that they will work
No (see above responses).
 

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As stated by TW-Brian the TTR225 & TTR230 share the same 223cc motor.
I noticed no discernible difference between the heads when I swapped a 223cc TTR engine for the TW200's engine.
I also am using the stock '03 TW carb and manifolds without modification on that 223cc TTR225 engine.
As such is seems logical that if an intake mod can be made to work on a TW 200 engine it can be made to work on a TTR 225 or TTR230 engine.
Mating TTR airbox to TW or Chinese carb might require creativity.
Agreed.

Thanks the TW carb is a 28mm correct??/ The 2005 TTR230 is a 26mm
I do not have a loose TW carb available to measure, but I can assure you that it is not larger than a TTR carb as you indicate it is.

I would have to shave a little off the carb joint to get the 28mm in to a 26mm correct
As I stated above, it is unlikely that the TW carb would be larger than the TTR carb.

or just get a 28mm carb joint from a TW which should bolt up to the cylinder of a TTR230
The TW intake manifold will bolt directly to a TTR cylinder head, however a TTR carb will not mate up properly with a TW intake manifold - it will be too big.
 

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Discussion Starter #16
Sounds like I may try the TW intake and TW carb. I'll just have to figure out the airbox configuration. Thanks
 

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Micrometer is AWOL but I just tape measured spare OEM TW200 carb intake's O.D. @ ~45mm. Possibly ~45.5mm?
 
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