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CATEGORY LISTINGS > CUMMINS > N-14 Question [ REFRESH ]
Thread Title:

N-14 Question


Created On Tuesday October 30, 2012 18:20 Diesel Talk
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platinum1286
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Joined: Feb 2011

Note Tuesday October 30, 2012 18:20 View thread in raw text format
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Just about finished putting my N-14 Celect (CPL 1844)( built in 1995) and went to go and put my exhaust manifold on and much to my disgust, find that my old heads bolted the manifold on with bolts on either side of the exhaust ports, while my new rebuilt heads have a diagonal bolt pattern. The parts supplier "screwed up" much to my dismay, but the old exhaust manifold looks kind of ratty anyways, and I have found a manifold that will fit these heads rather than tear the engine down and put the origininal style heads back on. The heads look identical in every way, with the exception of the damned exhaust manifold bolts which I failed to notice. This being my first N-14 rebuild, I didn't know the exhaust manifold came any other way. I phoned Cummins Western Canada and gave them the info that I had and they assured me that the head internals and dimensions are identical save the exhaust manifold mounting and this head is the next revision of their cylinder heads which are also used on the Celect Plus engines. Just wanted some thoughts from people who really know these engines if just swapping the exhaust manifold rather than spend the time on effort of replacing them with the originals is a good idea or if there is something I don't know and should.

Thanks
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westcoast
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Note Thursday November 01, 2012 02:39 View users profile View thread in raw text format
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Only two differences - diagonal exhaust studs and water manifold seals , use the new heads and replace the exhaust manifold ( better flow ) Regards David

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detroit

Edited: Thursday November 01, 2012 at 02:40 by westcoast
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Skidd88
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Joined: Feb 2014

Note Saturday February 15, 2014 15:34 View thread in raw text format
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Hey, New to the site! I have built several N-14's, the head issues you talked about is not uncommon. There are also a version that has both style's of exhaust mounting holes, it really depends what Cummins happens to ship out at the time of purchase. There is also a small pin in some heads and not others for the metal type exhaust gasket, instead of the foil/carbon style gaskets. I hope this gives you more insight for the future builds.

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Master ASE Tech, International Dealership Certified, Cummins, Detroit, Freightliner Dealership Trained.
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