Many manufacturers do this for production cominallaty of parts and cost as various small boats and classes have HP limits, by simply changing a few parts, ie carb, prop, bingo, you have cut costs and satisfied customers and regulatory bodies alike.
You don,t need "Yamaha oil" but if a full or semi synthetic castrol MObil 1 etc it works just as good , maybe better because you can buy high quality. 9,8 Tohatsu here 2021 mod. But my recent was a 25 4 stroke Tohatsu, full synthetic oil, lasted 12 years with no issues and use year round.
I understand the Yamaha 4hp amps up to a 6hp, the 8hp amps up to 9.9hp, and the 15hp amps up to a 20hp simply by upgrading carb jets. Very simple exercise on the 4hp.
Hello! Thanks for the video! you seem familiar with yamaha engines. Do you have any idea of the difference in power and drive between a T9.9 and a 20hp model?
He have a "Light version 212 ccm carbed version of a 9,9.38kg The "heavy version is 362 ccm and 51 kg, that is a bit heavy but big displasement and carburated engine. Here comes the interesting, you can get a Tohatsu MFSsport thrust 15 EFI at 43 kg and 333 ccm , if want the light version a 209 EFI at 38,5 kg is coming. I have the old 2021 9,8 carb at 37 kg on a 10 feet plastic boat. A good engine but i think the new is something else. Better torquee etc. In this class it,s a jungle but mercury "light 9,9 EFI" is a tohatsu Yamaha give big dispalsement in the class, but a bit old teck with carbs but for some carbs are a good option. All types are good but i like Tohatsu, they are a reliable run about application and i live with a lake using it much out in fjords. I got that 25 EFI before, that is a extremely good engine. Tohatsu 526 ccm EFI 3 cylindered 4 stroke, no replased by a 500 ccm 3 cylindered 4 stroke. All others are 2 cylinders.Even the yamaha 25 with 432 ccm By tuning up a already existing engine, it,s not extremely much to gain but a bit moore top speed. My 9,8 it,s a "tuned up 8" and so on. But if go EFI /bigger displasement,i think it,s clear that gain efficensy and torquee. The MFS 9,8 Tohatsu is in USA still sold and Mercury take the EFI light 9,9 that is a Tohatsu under the hood. Have a good spring and summer from Norway=)
Don't buy the 8 thinking you're getting a 9.9. Onc did this with the 9.9 and 15. Only real difference is the carb. (Not the jets like some think). You just end up with a bunch of extra weight.
The 8hp has a 40mm stroke & 197cc displacement whereas the 9.9hp has a 43mm stroke & a 212cc displacement. Hence the extra horsepower in the 9.9hp. This video comparison is therefore incorrect & misleading.
@@petermiller8634 it is good information for people to have, because every motor will be a little bit different. To whoever is watching always do your own research! Sometimes this may not work.
The 9.9 has a different carb as well as the prop ...but still identical ....buy anew carb and prop slap that on your 8hp and make it a 9.9 for 500 bucks or less
The 8hp has a 40mm stroke & 197cc displacement whereas the 9.9hp has a 43mm stroke & a 212cc displacement. Hence the extra horsepower in the 9.9hp. This video comparison is therefore incorrect & misleading.
@@petermiller8634that's true for older models Want to say pre 2022. Post 2022 they are same block. The 15hp is the only unique block now because the 20-25hp share block. Where as in past 15-20hp where same. The two strokes 9.9-15 are the same. Yes they still make em
![โอ้เธอช่าง... - บี้เดอะสกา ft. ต๋อง เทวัญ (Prod. by ป๋าเพชร) [Official MV]](http://i.ytimg.com/vi/zbWhiLFmVL0/mqdefault.jpg)
Many manufacturers do this for production cominallaty of parts and cost as various small boats and classes have HP limits, by simply changing a few parts, ie carb, prop, bingo, you have cut costs and satisfied customers and regulatory bodies alike.
Some have a restrictor plate between the carb and air box. Also you will have to upgrade the electronic box which is pricey.
You don,t need "Yamaha oil" but if a full or semi synthetic castrol MObil 1 etc it works just as good , maybe better because you can buy high quality. 9,8 Tohatsu here 2021 mod. But my recent was a 25 4 stroke Tohatsu, full synthetic oil, lasted 12 years with no issues and use year round.
I understand the Yamaha 4hp amps up to a 6hp, the 8hp amps up to 9.9hp, and the 15hp amps up to a 20hp simply by upgrading carb jets. Very simple exercise on the 4hp.
Hello! Thanks for the video! you seem familiar with yamaha engines. Do you have any idea of the difference in power and drive between a T9.9 and a 20hp model?
He have a "Light version 212 ccm carbed version of a 9,9.38kg The "heavy version is 362 ccm and 51 kg, that is a bit heavy but big displasement and carburated engine. Here comes the interesting, you can get a Tohatsu MFSsport thrust 15 EFI at 43 kg and 333 ccm , if want the light version a 209 EFI at 38,5 kg is coming. I have the old 2021 9,8 carb at 37 kg on a 10 feet plastic boat. A good engine but i think the new is something else. Better torquee etc. In this class it,s a jungle but mercury "light 9,9 EFI" is a tohatsu Yamaha give big dispalsement in the class, but a bit old teck with carbs but for some carbs are a good option. All types are good but i like Tohatsu, they are a reliable run about application and i live with a lake using it much out in fjords. I got that 25 EFI before, that is a extremely good engine. Tohatsu 526 ccm EFI 3 cylindered 4 stroke, no replased by a 500 ccm 3 cylindered 4 stroke. All others are 2 cylinders.Even the yamaha 25 with 432 ccm By tuning up a already existing engine, it,s not extremely much to gain but a bit moore top speed. My 9,8 it,s a "tuned up 8" and so on. But if go EFI /bigger displasement,i think it,s clear that gain efficensy and torquee. The MFS 9,8 Tohatsu is in USA still sold and Mercury take the EFI light 9,9 that is a Tohatsu under the hood. Have a good spring and summer from Norway=)
Don't buy the 8 thinking you're getting a 9.9.
Onc did this with the 9.9 and 15. Only real difference is the carb. (Not the jets like some think). You just end up with a bunch of extra weight.
You need more than the carb, the board too ?
Any links to a 10hp prop for my 7 spline yam 8hp motor?
The 8hp has a 40mm stroke & 197cc displacement whereas the 9.9hp has a 43mm stroke & a 212cc displacement. Hence the extra horsepower in the 9.9hp. This video comparison is therefore incorrect & misleading.
Only pre 2014? For 2015 and on both the 8 and 9.9 are 212cc. Absolutely correct the only difference is the carburator
@@nintendude1988 fair enough I stand corrected, thanks.
@@petermiller8634 it is good information for people to have, because every motor will be a little bit different. To whoever is watching always do your own research! Sometimes this may not work.
Can you rig that puppy for remote operation?
They all do it...
And it’s only about a $200.00 difference
The 9.9 has a different carb as well as the prop ...but still identical ....buy anew carb and prop slap that on your 8hp and make it a 9.9 for 500 bucks or less
I have a 2003.t8 what prop does the 9.9 have and do u literally just bolt up 9.9 carb and bam there ya go thx
The 8hp has a 40mm stroke & 197cc displacement whereas the 9.9hp has a 43mm stroke & a 212cc displacement. Hence the extra horsepower in the 9.9hp. This video comparison is therefore incorrect & misleading.
@@petermiller8634that's true for older models Want to say pre 2022. Post 2022 they are same block.
The 15hp is the only unique block now because the 20-25hp share block. Where as in past 15-20hp where same. The two strokes 9.9-15 are the same. Yes they still make em
yamaha are heavy and carbed up to 20hp, they need to make the 15hp lighter and efi
Specs show Yamaha are lighter than Honda and Mercury
Not on the 15hp they're not
Yamaha 51kg carbd
Honda 46kg carbd with accelerator pump
Suzuki 44kg EFI
how much
I will find out.
This info is wrong. Do your research, another TH-cam w misleading info. 😮
Dealer must be wrong then? Hmmmm
Worthless
Same as lots of outboard ECU and Restrictions in airflow. Secret? You must be the only person on the plannet that doesn't know?
Or It's CLICK BAIT!