Johnson "70mod"

**hupiveneilija** · 11-12-2017

Hi again!
Now i have carbs that works properly. They changed hole thing, throtle response is better than ever before and motor runs real nice��. Under is picture of those carbs with low end airjet and mainjet, no idle jet or screw. Airjet is #33 and main 1.8mm with those feeling very strong and when buried pedal from idle it took 58kn real quick ~8000rpm. Little trimming and 59kn @8100.
This all with my mildest block and 0.463 head.
https://youtu.be/PSaa3iMS5iA

Edit: #1 178 #2 175 #3 171
Ign adv 21* @wot

**Powerabout** · 11-13-2017

whats the large hose looks like its going from top of the block to the old tell tail fitting?

**hupiveneilija** · 11-13-2017

Originally Posted by Powerabout

whats the large hose looks like its going from top of the block to the old tell tail fitting?

Correct, its coming from old telltale fitting wich was largened and goes all the way through lower cowling. Ive made waterdump because that LWP on the nose is feeding so much water that wasnt able to get motor warm a bit.
Now with that and little adjusting on thermostat, have better control on temp.

-J-

**hupiveneilija** · 11-15-2017

What a day it was for boating!😎
Sunshine , little wind and 4*c temp. Todays result was what you see in the picture, have to find more pitch!

-J-

**hupiveneilija** · 02-21-2018

Done little tinkering with exhaust for next season!

**ferdthe4** · 04-24-2018

the last video of it running thing sounded awesome.

**Hans69** · 06-28-2018

So now it's next season.
I want to know more about this build, maybe someone else want that too......
What is the estimated Horsepower on this engine.
Can you guestimate, this boat with this weight at that speed needs so and so much horsepower.
Keep it up, -it's fun!