New prop for 4.3 liter OMC I/O

adam355 · Criminal Joined: 19 Jul 2006 Posts: 53

I have a 17 foot I/O OMC drive that needs a new prop. I have no idea what pitch or if I should do 4 blades or what. I would like to stay in the 200 dollar range. I would really appreciate some help guys.

bjeremi · Soul Rider Joined: 30 Jan 2006 Posts: 433 City: Owasso

Try to find a four blade stainless 17pitch. Worked great for me. With the same engine and about the same size boat. Mine was 18.5 feet. So you'll have an even better hole shot.

adam355 · Criminal Joined: 19 Jul 2006 Posts: 53

Can't do stainless too many rocks around here. Anyways looks like the old prop was 19 pitch, but I'm not sure if the right spec prop was on there.

vette74 · Posted: Apr 15, 2008 11:09 am Post subject:

On my last boat I had a 4 blade quicksilver prop. I bought it off of ebay for about $100 or so. I cannot remember the pitch it was either a 17 or 18. I was very pleased with the prop it worked well for my 4.3 I/O, it held speed like perfect pass.

adam355 · Criminal Joined: 19 Jul 2006 Posts: 53

http://hustlersport.com/cartgenie/prodInfo.asp?pid=2124&cid=89

Bought one of those with a 19 in pitch. I will let you guys know how it works out.

brichter14 · Addict Joined: 27 Apr 2008 Posts: 705

i gots a 4.3 mercruiser and plan on puttin a high five 19p prop on it. government refund checks ftw

JUST-IN-TIME · Posted: May 13, 2008 9:36 pm Post subject:

first before you guys play with props
you need to find out what WOT is !!!

pet575 · Posted: May 14, 2008 7:13 am Post subject:

and what RPMS at WOT are as well. You need to know how close you are running to the max RPM at WOT. If you're not close, you're already running the wrong prop or something else is wrong. JUST-IN-TIME is right- get the RPMs at WOT before you do anything.

adam355 · Criminal Joined: 19 Jul 2006 Posts: 53

I bought a 4 blade 19 by 14.25 Seems like it might be 200 rpms low from wot but it runs great. should i worry?

GuitsBoy · Posted: Jun 09, 2008 10:41 am Post subject:

I also did the Michigan wheel 4 blade prop. Great improvement for on my 18' four winns. With 1000# ballast and perfectpass it was a pretty good wake boat for an I/O. I wouldnt say the prop works nearly as well as perfect pass does, but it will definitely make driving a bit easier on you.