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Is it a Perkins 4.107 or a 4.108?

Discussion Forum at MarineEngine.com » Perkins » Is it a Perkins 4.107 or a 4.108? « Previous Next »

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Axel Nagel
Posted on Monday, August 19, 2002 - 08:38 am:   Edit Post Delete Post View Post/Check IP

Hi. I just bought a older boat with a Perkins 4 cylinder fresh water cooled diesel engine installed.
It is supposed to be a 4.108 55hp from 1982, but I am not sure now.
Found the engine number on the engine block just where the injection pump is mounted.
The number is: 7112958.
Can anyone give as much info as possible (Type/hp/year) on the engine I have?
Thanks in advance.
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Andrew (Andrew)
Posted on Saturday, November 09, 2002 - 10:18 pm:   Edit Post Delete Post View Post/Check IP

Axel,

Perkins engine numbers should be a combination of up to fifteen letters and figures. Your number doesn't seem to fit their Engine ID sysytem.

Regards,
Andrew
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roy abrams
Posted on Friday, May 07, 2004 - 05:24 pm:   Edit Post Delete Post View Post/Check IP

hi perkins made one engine which i own one without the 4 108 or 4 107 sufix no on it
4 means 4 cyl 107 means 107 cubic inches
6 354 is therefor six cyl 354 cubic inches
and so it goes
but 107s have smaller head studs 3/8 inch
108s are slightly bigger 7/16
if yours are 7/16 with 4 separate cold start plugs in the head its a 108 inch but later model
no plugs in the head then????
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johnhamilton
Visitor
Posted on Sunday, February 26, 2006 - 11:53 pm:   Edit Post Delete Post View Post/Check IP

My Perkins 4.108 has become difficult to start, & when it does finally start it is running unevenly, struggles to build up revs & surges back & forth mildly. I have ruled out a fuel problem, new filters have been fitted etc. there seems to be more blue smoke exiting the exhaust. I fear the rings may be shot....has anyone got any ideas? John Hamilton.
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kelly foyle
Visitor
Posted on Tuesday, July 22, 2008 - 03:41 pm:   Edit Post Delete Post View Post/Check IP

hi can anyone help? i have a perkins 4107 in my boat it is approx 35yrs old the diesel injection pump has broke can anyone point me in the right direction on getting another one. A few people have told me i have no chance as spares are not made anymore for the 4107.

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