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Date Posted: - Friday - 04/22/16 - 1:13am
Author: Darren
Subject: 4108 or 4107

Silly question but how do you tell if your Mariner 31 has a 4108 or 4107 Perkins? Boat name Bolero
Thanks in advance

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Replies:

[> 4.107/4.108? -- Aeolus M31 Mark, - Tuesday - 04/26/16 - 7:29am

Hi Darren,

I'm not sure if this will help but this old link talks about engine numbers and head stud sizes that are different on the two motors.

http://www.marineengine.com/boat-forum/showthread.php?4493-Is-it-a-Perkins-4107-or-a-4108

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[> they are the same but... -- Ardi, - Tuesday - 04/26/16 - 8:55pm

but, the 4-108 have heat exchanger is a newer model. 4-107 does not. for further info call Patrick Ritchie who is located in Maine , he is the master of perkins engines, you will not find another person that knows more about them. he is an engine mechanic.

good luck

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[> 4108 or 4107 -- Darren, - Saturday - 08/27/16 - 12:38am

thank you for your help :) it turns out to be a 4108 based on the serial number which required major cleaning and scrapping to identify. pleased to say, engine is now running and running beautifully. much appreciate the help

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