"Red top" Cummins N14 - Diesel Forum - TheDieselStop.com
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post #1 of 5 (permalink) Old 10-23-2008, 04:03 PM Thread Starter
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"Red top" Cummins N14

Hi guys,

I'm in the market for a late 1990s Pete 379, and while most of the trucks I've looked at have the Caterpillar 3406E, some have Cummins' N14 rated from 435HP and up. A lot of these seem to be the "red top" version.

I understand the red valve cover is supposed to be an indication of a high-horsepower engine. Are there any issues I should be aware of with these?

Also, I'm not as familiar with Cummins history as I am with Caterpillar. In the 1995-2000 range, were there any mechanical/electronic bridge motors, early/crappy emissions control technology or any other problem engines I should avoid?

Input much appreciated.
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post #2 of 5 (permalink) Old 10-26-2008, 05:58 PM
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I HAD A 525 HP N-14 in my 98 pete. only thing done to the engine wasa head gasket recall that was done when the truck had about 430,000 miles on it, the i had to start replacing injectors at about 680,000. I sold the truck with 940,000 miles on it and had never had any major work done. i had the bearings checked at 700,000 or so while they replaced a leaking pan gasket, all checked well, was told the bearings had a lot of life left then. hope this helps ya decide.

2001 Excursion Limited, 4x4, toreador red, 4" turbo back exhaust, DYI Tymar intake,V's & modded B's, 30mm rear sway bar,
203 deg T-stat, alum housing, coolant filter, all from Bob Reilly

formerly known as; pullmyfinger

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post #3 of 5 (permalink) Old 10-27-2008, 07:34 PM
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You'd be very happy with the N14.

'04 Excursion EB, 6.0 PS, 4X4, Magnaflow Performance exhaust, Isspro gauges (boost, pyro and tranny), Bilsteins, aFe intake, front and rear leaf spring upgrade w/ bags, 30mm rear sway bar, SCT Xcal2, Red-Head box, Jordan brake controller, Arctic Fox 29V - 20,420# GCW, Everything haulin' me, the wife, the 5 Amigos, Millie and Yogi (our 2 Berners).
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post #4 of 5 (permalink) Old 10-28-2008, 09:08 PM Thread Starter
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How is the N14 on fuel mileage (bobtail/empty/loaded)?

Also, does anything like the Bully Dog tuners that you see for smaller diesels (pickup) exist for this engine?
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post #5 of 5 (permalink) Old 02-08-2016, 09:57 PM
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Hello fellas I'm new here so not to sure if I'm posting in the correct place if not I apologize, I have a 1977 ford ln 9000 with an n14 in it I just bought the truck it has just over 500,000 on it doesn't use any oil bit I am wondering about the idle it seems choppy not like a miss or surge just choppy not real smooth ,I'm trying to figure out if that's normal or if I need to be looking into it. I can load it with 15 ton and it pulls it like a dream never have to down shift on hills ,any input would be great thanks in advance
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