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504 RPMs

  • Thread starter Thread starter Hows Hatt
  • Start date Start date
  • Replies Replies 4
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Hows Hatt

Member
Joined
Apr 15, 2005
Messages
44
Hatteras Model
28' SPORT FISHERMAN (1965 - 1966)
I think I may have found a new home for the 504N Cummins I've been trying to sell. Prospective buyer wants to know how many RPM they'll turn at cruise and at wot. I have no idea since I've never run them. Anyone out there know? Also, I'm curious what the scrap price would be for those heavy honkers. I'm thinking that the price I'm asking is not that far off from scrap. Any ideas? Thanks. Howard in west Michigan
 
Most 504's turned 2800 under load. However, there are specs from 2400 to 3000 so I'd need a CPL (control or critical parts list) number off your engine data plate or fuel pump tag to look up exactly what you've got.
 
Did you post them for sale on Boatdiesel.com? You could post your question there too. The membership fee is low.
Tony D
 
Most 504's turned 2800 under load. However, there are specs from 2400 to 3000

No they go up to 3300 I had a pair and double checked this with cummins since most stuff I found showed 3000. What year were they mine where 1979 202hp 504N. I actually got a copy of dyno test from cummins in 2001 took a few phone calls and a lot of luck finding the right person to talk too. Let me know if you need more I can look and see if I have the name or #?
 
I'm pretty sure mine are1981's. I had them posted on this site, boatdiesel.com and Boats & Harbors (thank you, tugboat Willie).
A good ole' boy from Mississippi called on them, don't know where he got the lead. For the money, (2K for both) he's getting a deal, and I'm getting rid of them. Thanks for the replies. Howard
 

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