Hill Marine 22p or 24p on a 270 with a 383?

J3ffJ3ff Member Posts: 4,232 ✭✭✭✭✭
Going to make the move to a different size prop, the 20p's pop right up on plane but at 4k rpms I'm barely at 26mph. That coupled with the reason I bought the 383 was because of the tq makes me want to try something else. Don't forget that before changing to hill marine the motor absolutely made more noise and sounded like it was working harder, makes me think there is some untapped potential here. Not that I want this to be a speed boat, but cruising at closer to 30 and topping out around 40 (as others have said they do) would be nice. Right now I'm not sure if the boat would even hit 35 and that's with fresh bottom paint and everything clean.  

The boat originally had 22p 3 blades on it. Is there any other 270 out there with either 22 or 24 hill marine 4 blades AND a 383 ?? Interested to hear what you all think, and if someone who has them with the 383 can chime in that'd be great. 


Comments

  • Aqua_AuraAqua_Aura Member Posts: 2,705 ✭✭✭✭✭
    The 20p seems way under propped with the 383 in my opinion. Going to 22 or 24 seems much more appropriate. 
    1997 Bayliner 3988
  • skennellyskennelly Member Posts: 2,196 ✭✭✭✭
    My 350 MPI is 22...seems that would better suited for a 383...maybe 24 like Aqua said
    2002 - 270FV Mag 350 B3
  • Handymans342Handymans342 Member Posts: 10,375 ✭✭✭✭✭
    You should know your outdrive ratio, right? RPMs right? With that said call Hill Marine and have a conversation. They are super nice 
  • J3ffJ3ff Member Posts: 4,232 ✭✭✭✭✭
    edited August 2021
    You should know your outdrive ratio, right? RPMs right? With that said call Hill Marine and have a conversation. They are super nice 
    Yeah, I did that and they were very nice, the gentlemen said 20p, I think maybe I wasn't clear or he didn't understand that a 383 has more torque than one would expect. 

    They are being super nice about possibly sending them back (and paying a few hundred for resurface/restock) - the problem is I can't be propless for even a week (it'd be more like two or three) during hurricane season. The other thing is if I do have to pull the boat I'd much prefer to do the swap on land vs in the water, although I have done prop swaps on a B3 three times in my life (two were a friends twin engine boat, once was mine).. 

    Just not sure if 22 would be enough and if 24 would be too much. 
  • Aqua_AuraAqua_Aura Member Posts: 2,705 ✭✭✭✭✭
    If you are sending them back and they are sending new ones just see if you can pay for the new ones and get the credit after they get yours back. 
    1997 Bayliner 3988
  • J3ffJ3ff Member Posts: 4,232 ✭✭✭✭✭
    edited August 2021
    Aqua_Aura said:
    If you are sending them back and they are sending new ones just see if you can pay for the new ones and get the credit after they get yours back. 
    I've mentioned that twice. They don't seem to be a fan of that idea for some reason. 

    I suppose I could just buy the new set for 1000ish and sell the old ones for 700ish... and still be fine.. just annoying to deal with Ebay/fees, buyers, etc... 
  • RemembranceRemembrance Member Posts: 30
    I have a 2008 260 EC. I changed to Hill Marine 4 bladed SS. I went from a three bladed 22p to 18p. I added 6000 to WOT and several miles per hour speed wise.

  • skennellyskennelly Member Posts: 2,196 ✭✭✭✭
    @Remembrance - what does that mean added 6000 to WOT?  You are running 6000 rpm at WOT?
    2002 - 270FV Mag 350 B3
  • Aqua_AuraAqua_Aura Member Posts: 2,705 ✭✭✭✭✭
    What engine do you have @Remembrance
    1997 Bayliner 3988
  • skennellyskennelly Member Posts: 2,196 ✭✭✭✭
    A previous discussion they said a 6.2L
    2002 - 270FV Mag 350 B3
  • laureniac1laureniac1 Member Posts: 257 ✭✭✭
    WOT- wide open throttle 
  • skennellyskennelly Member Posts: 2,196 ✭✭✭✭
    We get what WOT means.  What does 6000 mean?
    2002 - 270FV Mag 350 B3
  • Aqua_AuraAqua_Aura Member Posts: 2,705 ✭✭✭✭✭
    6000rpm.  If it is a 6.2 Max RPM is 5400 so it is now possibly under propped. 
    1997 Bayliner 3988
  • J3ffJ3ff Member Posts: 4,232 ✭✭✭✭✭
    I can't imagine having a 18 pitch on this boat.. however this makes me think I should go 22p instead of 24p
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