Engine Questions - What's my Yamy?

Swamp_Bear

Contributing Member
City
Wilson
I just bought a new '06 21CC powered by a Yamaha 150TXR old school two-stroke.

1) How much does my engine weigh?

2) What is the size and pitch of my prop? It feels like it's set up for hole shot - I pop up on plane in 2-3 seconds at 3,000 rmp, and can't max out my RPM when I go WOT at about 34mph (GPS).

Yamaha has stripped all their specific engine specs from their website, and the owner's manual is as vague as a politician's campaign promises.

Thanks!
 
that is not an old school 2 stroke. that is fuel injected and I believe probably one of the hpdi engines. Not sure on the last part but if it is, it is an awsome motor. rpms shoule be around 5500 . I have a 150 yamaha hpdi and turn a 14.25 dia 18 pitch 4 blade stainless.. I can only turn 5250 rpm but my speed is average around 42
 
You're right Cagrove...426. I saw the model # and didn't notice it was for a 4-stroke vs. a 2.
 
Thanks for the engine info, guys.

So it weighs 426 lbs, and the prop is (probably) a 14.25 diameter 18 pitch four blade? I need to buy a second prop, and I needed a starting point.

Much obliged!
 
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