I witnessed a Yamato 500cc do 175 hp on a dyno after extensive tuning and port polishing. They were monsters.
@albychainsaw80
2 жыл бұрын
Broker engine
@freeradical431
2 жыл бұрын
you need Dumonde Tech Racing Oil, best Ive ever used!
@gabrielerossi8398
2 жыл бұрын
if you use it with half pipes it is normal for it to break
@nellawell4976
3 жыл бұрын
Odd looking throttle and why do you have hole's in the deck?
@Zzeke
3 жыл бұрын
Deadman throttle. You have to hold it open.
@Zzeke
3 жыл бұрын
Looks like maybe a high speed mixture lever as well?
@michaelbrown-dj7py
Жыл бұрын
Looks like pipe slider lever.
@bob.w3984
5 жыл бұрын
Guess it seized. Used to play with seadoo jetski motors. It was easier. Make a run and watch the Tach. At wfo the peak rpm would drop a few rpm and you get out of it real quick and then tweak the carbs and retest.. jet pumps are like a Dyno. With a prop its a little more variables.
@Slicklickz
5 жыл бұрын
Looks like 1/2 of a T2X powerhead.
@shaveyh10
5 жыл бұрын
Cha-ching.... Been there, done that, but with Koenigs
@brianseifer9744
4 жыл бұрын
KOENIG, the master Race, Yamato ok, I did a C class stock 24.1 cu.in , sure made the little A stock peanut boat jump out out of water ,2 sec. on plane, didn't get 70 only 67 mph , like the runabout side cam was 1st class . In early 80' S lot more alky Yamato around.
@andykerr3803
2 жыл бұрын
Is it a four cylinder opposed? Reminds me of the Koenig. I guess he seized or blew it... Crazy, the 6 cylinder Mercs would do almost 60 races without a tear down
@goropeza101
6 жыл бұрын
Not many people in my speedboat crowd knows what a Yamato outboard is but for those that race tiny hydros the Yamato rules!
@dmanindfw
5 жыл бұрын
My Uncle used to be one of only a handful of importers of these fine little engines. They hold several kilo world records running Yamatos.
@Chadwicky69
10 жыл бұрын
Bad Azz!!!!!!! I have a vid of me blowin up my modded 6cyl Evinrude thats very similar.....the only thing you forgot at the end is "And thats how you blow a motor up!"
@BuckingFastard
8 жыл бұрын
+Chad Schram seen it many times and also seen the boat on S&F
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