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-   -   4.107 or 4.108? Which do I have? (https://www.sailnet.com/forums/engines/324504-4-107-4-108-do-i-have.html)

maplemale 07-21-2018 01:57 PM

4.107 or 4.108? Which do I have?
 
3 Attachment(s)
I cannot for the life of me figure out which Perkins I've got in my 1984 E40 nor can I find what i'm told the serial number looks like. Need to order parts. I definitely have either 4.108 or 4.107. The engine was rebuilt / replaced 6 years ago so it could be either. I have a few receipts from that, which do NOT say much other than things like "Rebuilt Engine". lol


These are the ONLY numbers I have found with pictures:

1. Right side (looking from front), between injector pump and oil pan gasket.
37112400
Z 2 L
MC 22260-1 (Partly pictured, right of first pic)


2. Just above bell housing / transmission
67147020-2
SG 7855-S

maplemale 07-21-2018 02:51 PM

Re: 4.107 or 4.108? Which do I have?
 
1 Attachment(s)
Well... I THINK I've found it. This helped immensely! https://youtu.be/dxgoP4-fohk

I was looking in the wrong place. Check this pic out. Best I could do at the angle, but it reads 108779 it might read 7108779 - but hard to tell if it's a 7 or a just a cut / damage to the metal. That is on top of the fuel injector pump mount to the block. Which according to video should be the right location.

kenr74 07-21-2018 05:54 PM

Re: 4.107 or 4.108? Which do I have?
 
Perkins has used 3 different serial number formats. This looks like the earliest (no letters). Page 4 of the shop manual (which you can download as a PDF) explains this.

maplemale 07-21-2018 10:41 PM

Re: 4.107 or 4.108? Which do I have?
 
1 Attachment(s)
Quote:

Originally Posted by kenr74 (Post 2051540010)
Perkins has used 3 different serial number formats. This looks like the earliest (no letters). Page 4 of the shop manual (which you can download as a PDF) explains this.


Funny thing about the shop manual. Look what I found on the boat (picture)! Number matches what's stamped on the engine. I saw this weeks ago and two things made me disregard it initially.


1. I'm on the phone with TAD (Trans Atlantic Diesel) and they swear that number is NOT a Perkins serial number at all.
2. My boat is a 1984. Could have sworn those were all Perkins 4.108s?

PS: yes, page 4 even has an example that looks just like my engine number.


How annoyed should I be that I thought I was buying a boat with 4.108? I'm pretty sure, they were actually the same block. All my parts look like 4.108 stuff from what little I know. Starting to think that when they did the rebuild of my engine 500 hours ago, it was a 4.107 block rebuilt as a 4.108. Sound about right? Would be nice to know for sure so I know what parts to order! Like, Valve Cover gasket, water pump rebuild kit just to name a few on my list.

kenr74 07-22-2018 08:11 AM

Re: 4.107 or 4.108? Which do I have?
 
I am certainly no expert, I just became the owner of a 4.108 last fall. I Googled around, and no one anywhere that I can find has any information on those early serial numbers, not even the Perkins website. Like TAD told you on the phone, it is like they don't exist. Strange.

zeehag 07-23-2018 01:51 PM

Re: 4.107 or 4.108? Which do I have?
 
they exist. the numbers are under the f i and stamped into engine. quite difficult to read. my rebuilder found mine with a microscope.


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