johnson 140 installed quick prop question

[deshet]

sorry for repost

Randleman is your prop a Johnson or Suzuki prop. The doing the install wants $200 for a used SS 21 but it has several nicks. I would like to start with some new or at least not damaged.

I have a new ss quicksilver typhoon prop part # QS6004x
The diameter is 14 and the pitch is 19 it is a 4 blade prop.
Do you think that it will work

Also if this prop will not work what size should be good on the V21 since it is a bit heavy. And I am a bit heavy then most 275lbs. and all of my friends are over 200 pounds

Thanks

[tsubaki]

Different props yet the same diameter and pitch will give varied results, meaning if it is aluminum, stainless or either cupped or not cupped.
From what I remember when my father had the boat I got, he was running a 15 pitch on the 140 he had but don't know anything past that.

[spareparts]

if that prop isn't pitched too high, four stroke engines generally respond well to four blade wheels

[tsubaki]

Finally found it was a 4 stroke that you have.
Being it's a 4 stroke you could probably get away with a 17 to 19.
The one I meantioned was an early 80's 2 stroke.

[randlemanboater]

Mine are both Suzuki, one 14x19, one 14x21, both aluminum.

I would try the 19 first.

Sorry, I've been away.

[Blue_Runner]

Also if this prop will not work what size should be good on the V21 since it is a bit heavy.

Mine has a 14 3/4 x 17 w/ my 2 stroke 150. Digs out of the hole effortlessly and pushes her to 42 mph trimmed up "suckin ducks" as Reel would say.

[randlemanboater]

BR...I think that prop selection for 2 and 4 strokes is different. I guess because of the different power delivery at different rpms, but I know that when I first got mine, the old crusty mechanic who probably can pick a prop in his sleep for a 2 stroke missed by a mile on mine, he gave me a 15p that put me way high in rpms and about 28 mph top speed....but it would take off out of the hole like a rocket.