"Hi !
I have a Yamaha 2-strok
"Hi !
I have a Yamaha 2-stroke 40hp with trim and tilt from 1992. The motor is in great condition. This motor did not go many summers with the previous owner. This due to a backproblem for him. The only thing he did every spring was to start the engine for lubing and cooling check.
Now onto my question : I have heard that the 40hp and the 50hp has the same block (693cc).
So if you change the carbs and the silencer you have upgraded your 40 hp to 50hp.This would be fun to test but I would like to know ,isn’t it something more to change or to tune ,like ignition or similar. Is it someone who has done this upgrade on this engine or similar ?
I know that the best way is to sell the 40hp and buy a 50hp-60hp and not dismantle a 15 year old engine. But if it is these parts I need to upgrade, the cost to get 10 more hp is very small instead of loosing a great deal to sell the 40hp and to buy a second hand 50hp or 60hp you don’t know anything about. Since I have heard this and do not know this, I thought I could ask in this forum .
Thanks in advance
Kentech"
I have a Yamaha 2-strok
"Hi !
I have a Yamaha 2-stroke 40hp with trim and tilt from 1992. The motor is in great condition. This motor did not go many summers with the previous owner. This due to a backproblem for him. The only thing he did every spring was to start the engine for lubing and cooling check.
Now onto my question : I have heard that the 40hp and the 50hp has the same block (693cc).
So if you change the carbs and the silencer you have upgraded your 40 hp to 50hp.This would be fun to test but I would like to know ,isn’t it something more to change or to tune ,like ignition or similar. Is it someone who has done this upgrade on this engine or similar ?
I know that the best way is to sell the 40hp and buy a 50hp-60hp and not dismantle a 15 year old engine. But if it is these parts I need to upgrade, the cost to get 10 more hp is very small instead of loosing a great deal to sell the 40hp and to buy a second hand 50hp or 60hp you don’t know anything about. Since I have heard this and do not know this, I thought I could ask in this forum .
Thanks in advance
Kentech"