Go Back  Offshoreonly.com > Technical > General Q & A
Need engine advice N A 598 cubic inch rebuild >

Need engine advice N A 598 cubic inch rebuild

Notices

Need engine advice N A 598 cubic inch rebuild

Thread Tools
 
Old 10-17-2014 | 01:24 PM
  #41  
Thread Starter
Registered
 
Joined: Sep 2011
Posts: 389
Likes: 0
From: Moscow OH.
Default

Looked at the build sheet the valves were PMB. The number on the valve is a stainless valve. Contacted Dart today they can repair the head also. Waiting on an email reply as to the cost. They said most Aluminum head atre easily repaired.
the mayor is offline  
Reply
Old 10-17-2014 | 05:21 PM
  #42  
Registered
 
Joined: Aug 2011
Posts: 2,733
Likes: 8
From: bel air, md
Default

Originally Posted by the mayor
Looked at the build sheet the valves were PMB. The number on the valve is a stainless valve. Contacted Dart today they can repair the head also. Waiting on an email reply as to the cost. They said most Aluminum head atre easily repaired.
If you have anyone close by that's builds alot of nitrous motors I'm sure they can fix them or tell you where to go. Your head really isn't bad at all...
Black Baja is offline  
Reply
Old 10-21-2014 | 09:59 AM
  #43  
Registered
 
Joined: Jul 2013
Posts: 232
Likes: 0
From: West Lafayette, Indiana
Default

Originally Posted by Black Baja
Man that's an easy fix. Should have seen mine after I detonated it and bent the intake valve over... There was no combustion chamber valve seats nothing. Valve seats ended up in the other bank of the motor hanging valves open. Little welding couple seats valves and good as new. That's the nice thing about aluminum.
I broke a ferrara exhaust valve last season and the damage looked exactly the same.
PurdueCAT is offline  
Reply
Old 10-21-2014 | 03:54 PM
  #44  
Thread Starter
Registered
 
Joined: Sep 2011
Posts: 389
Likes: 0
From: Moscow OH.
Default

Did you have the head repaired? If so who? I'm looking at all options.
the mayor is offline  
Reply
Old 10-21-2014 | 08:05 PM
  #45  
Registered
 
Joined: Jul 2013
Posts: 232
Likes: 0
From: West Lafayette, Indiana
Default

I didn't have mine repaired. I just baught a new set of aluminum castings and built them up per Bob Maderas specs. I went with Brodix because that is what I could get the best deal on. My block was trashed so since my boat is twin, I sold my good engine and built two new ones over the winter. It was costly, but I really enjoyed the project and wish I were doing it again minus the $$.
PurdueCAT is offline  
Reply
Old 10-26-2014 | 09:00 PM
  #46  
Thread Starter
Registered
 
Joined: Sep 2011
Posts: 389
Likes: 0
From: Moscow OH.
Default

Off to http://www.besracing.com/ tomorrow morning. They can repair the head and rebuild the bottom end and dyno the engine when finished. .
the mayor is offline  
Reply
Old 12-16-2014 | 06:18 PM
  #47  
Thread Starter
Registered
 
Joined: Sep 2011
Posts: 389
Likes: 0
From: Moscow OH.
Default

Engine is done. Dyno scheduled for the 30th.
I want to replace the water supply hoses. The hose was just black 1 1/4 radiator hose. Is there any better product for apperence. Also any ideas for a bracket to hold the wiring harness on the back of the engine.

Thanks
the mayor is offline  
Reply
Old 12-16-2014 | 07:18 PM
  #48  
ROB FREEMAN's Avatar
Registered
 
Joined: Sep 2006
Posts: 2,123
Likes: 2
From: Wis
Default

radiator hose ? that hose wasnt radiator hose tim .. if it was it wouldnt of lasted 10 minutes .. it would have calapst in a second .. keith eikert sels nice plyable hose .. thats where i bought that stuff from lol . 8 bucks a foot .. receipt should be in the boat folder . glad youre back together ..
ROB FREEMAN is offline  
Reply
Old 12-16-2014 | 07:21 PM
  #49  
ROB FREEMAN's Avatar
Registered
 
Joined: Sep 2006
Posts: 2,123
Likes: 2
From: Wis
Default

are you talking about the hoses from the transom to the raw water .. if its after the raw water then all that stuff came from teague .. i doubt that was just radiator hose but i dont know .. ive got a pic lets take a look at it .. i see i can dig it up ..
ROB FREEMAN is offline  
Reply
Old 12-16-2014 | 07:39 PM
  #50  
Registered
10 Year Member
 
Joined: Jun 2012
Posts: 1,455
Likes: 1
From: OK CIty, OK
Default

If I ever buy a boat from an OSO member, I hope they're half as helpful as Rob.
Cole2534 is offline  
Reply


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.