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Post Info TOPIC: 350cc Big Bore Kit for the TTR250 - updates and gossip!


Super Guru

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350cc Big Bore Kit for the TTR250 - updates and gossip!
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Guys I have come across TT350 decals

Elite design Co.

elitedesignco.com.au/1986-yamaha-tt350-replica-oem-tank-graphics/

Cheers Terry



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Hi Terry,

You can get complete kits for the TT350.  I used this one(scroll back through the posts): https://www.ebay.com.au/itm/stickers-Yamaha-TT-350-1998-stickers-adhesives-stickers-decal/123175996530?hash=item1caddc8c72:g:iNwAAOxyZw5RZq1M 

but I did contemplate this one- but opted for the other one due to the race plates: https://www.ebay.com.au/itm/YAMAHA-1986-TT350-DECAL-GRAPHIC-SET-LIKE-NOS/360250736622?hash=item53e09dffee:g:FcsAAMXQoiJRhB8N 

 

On a side note: I finally have my forks back from the Covid paced re-chroming. I will be taking it out for a run in the Sunset Desert again later in the week to check if I need to change tuning now that I have a Staintune muffler and Webbys header.  I'm interested in trying different final drive ratio as well. It is currently 14:44, but I have a near new 48t sitting around..........

I touched base with the dyno people today- so hopefully next week I will have the answer that you are seeking. The dyno will be run with the same gearing and tyre as the original run.



-- Edited by Gadget964 on Monday 12th of October 2020 12:22:41 PM

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Super Guru

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Looking forward to seeing the results. Try and get them to superimpose the new power and torque curves over the old ones to get the best idea of what's changed.

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They were saving the initial dyno in the computer for that reason.

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Got the 350 out today for its first run in 3 months. I figured out a few things: I am really unfit (old injuries don't help), the speedo is far from accurate - it's reading 20-30kph slow, so on my last run out here when I thought I was cruising on 120, I was a tad over. The 14:48 gearing feels better than the 14:44. It took me a while to get used to the feel of the revalved suspension, new tyres and steg pegz (a lot of changes all at once)

By changing the exhaust system, I think that my fuel mixtures are a bit out... I might just get it checked on the dyno.

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Gadget I do not know if this will help, I have a similar setup but not the 350. Short header, after market exhaust and 34mm carb. 52 pilot ( you probably need smaller for the 350), needle all the way up and 165 main.

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