ziemann
Chief Petty Officer
- Joined
- Apr 28, 2004
- Messages
- 584
Hey Elvin- I ran into an interesting post on another web site in reference to the TLDI 50's- I thought I would get your take- it sounds accurate but I thought the info on the Yamaha engine block was interesting. Here is what was posted in regards to the 50 TLDI:
Here is some interesting facts if you're thinking of buying either the 40 or 50.
- The block comes from Yamaha, 687/8/9ccm same as the 50hp Yamaha 2 stroke (they are unstoppable engines)
- It actually weighs 205.7 pounds
- They sell them in a 15" shaft which is good because most of the plans on here are from the 60's that call for 15" transoms hence my Tuffy
- Reliable, sounds like a diesel-ish idling, powerful, nice gear ratio
- Tohatsu have always made a bear of an engine providing with top horse vs rpm and torque vs rpm as well
- Considering the weight compared to a 2 stroke (lets take Mercury for instance) both 50hp lets say about on par when you add the oil reservoir for the Merc and the oil tank for the Tohatsu but you save 40% more gas with the Tohatsu but lose about 1/10th (100ccm) of displacement
- They use the Mercury lower end units including the same one as the 50 2 stroke Mercury
- They have the same propshaft as Mercury uses so the same stainless/aluminum props
- It comes with a prop/tach/tank when you buy one
- They are cheaper, lighter and faster than fourstrokes but with the same results except for noise
- They idle down to 700rpm
- The technology is the same as Mercury uses for their Optimax which is from Orbital Technology
====================================
I think we are all aware of the licensing agreement with Orbital- what is the poop on the Yamaha block?
Here is some interesting facts if you're thinking of buying either the 40 or 50.
- The block comes from Yamaha, 687/8/9ccm same as the 50hp Yamaha 2 stroke (they are unstoppable engines)
- It actually weighs 205.7 pounds
- They sell them in a 15" shaft which is good because most of the plans on here are from the 60's that call for 15" transoms hence my Tuffy
- Reliable, sounds like a diesel-ish idling, powerful, nice gear ratio
- Tohatsu have always made a bear of an engine providing with top horse vs rpm and torque vs rpm as well
- Considering the weight compared to a 2 stroke (lets take Mercury for instance) both 50hp lets say about on par when you add the oil reservoir for the Merc and the oil tank for the Tohatsu but you save 40% more gas with the Tohatsu but lose about 1/10th (100ccm) of displacement
- They use the Mercury lower end units including the same one as the 50 2 stroke Mercury
- They have the same propshaft as Mercury uses so the same stainless/aluminum props
- It comes with a prop/tach/tank when you buy one
- They are cheaper, lighter and faster than fourstrokes but with the same results except for noise
- They idle down to 700rpm
- The technology is the same as Mercury uses for their Optimax which is from Orbital Technology
====================================
I think we are all aware of the licensing agreement with Orbital- what is the poop on the Yamaha block?