Hi all, new to the site
I recently aquired a 76 trail twister with low compression on the pto side (95 lbs). A little scuffing on the piston sides and some flaking of the cylinder.
I'd like to know if the bottom half (cases and crank shaft) are the same for both the 340 and 440. I believe the stroke is the same. If so, are the electrics the same as well?
340 to 440 conversion
Re: 340 to 440 conversion
All is the same except for carbs and cylinder and the cylinder internals.2 YamaDoo wrote:Hi all, new to the site
I recently aquired a 76 trail twister with low compression on the pto side (95 lbs). A little scuffing on the piston sides and some flaking of the cylinder.
I'd like to know if the bottom half (cases and crank shaft) are the same for both the 340 and 440. I believe the stroke is the same. If so, are the electrics the same as well?
Re: 340 to 440 conversion
Is it worth doing, or should I keep it original?
What top speed can I expect from a fresh 340?
What top speed can I expect from a fresh 340?
Re: 340 to 440 conversion
Depending upon your weight it will be up to 15 mph slower and have less balls off the line.2 YamaDoo wrote:Is it worth doing, or should I keep it original?
What top speed can I expect from a fresh 340?
340 parts might be easier to come by than 440 engine parts but could be more costly overall as you have to acquire new (smaller) carbs.
Re: 340 to 440 conversion
It's already a 340.
I think I can source cylinders, pistons and heads for a 440. Not sure about the carbs and intake though.
I think I can source cylinders, pistons and heads for a 440. Not sure about the carbs and intake though.
Re: 340 to 440 conversion
Sorry I confused myself...LOL.2 YamaDoo wrote:It's already a 340.
I think I can source cylinders, pistons and heads for a 440. Not sure about the carbs and intake though.
I would keep it 340 you won't have to recalibrate the clutch either.