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Old 07-16-2018, 02:29 AM
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Join Date: Jun 2013
Location: Los Angeles
Posts: 17
OM603 Cyl Head / Pre Chamber Machining Q

Hello Fellow Diesel Geeks.

Having some difficulty finding some information.

Am converting my OM603.961 from a 014 to a 017 cylinder head due to mysteriously missing coolant and higher temps during high load driving.

I acquired a complete 017 head (pre-chambers, injectors lines etc.) and it is currently at the machine shop getting a refresh.

It was at the upper limit of OK for bend so I had them deck it .010."

My understanding is that the head height should be 142.9-143.1 with a min of 142.4mm. With Pre-chamber protrusion of 7.6-8.1mm.

I have found the part numbers for the thicker seals for P/C protrusion correction and have read of head gaskets that are thicker to correct for machining but solid info has eluded me.

Since a thicker head gasket will change the effective deck height where can I find more information on the thicker head gaskets?


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Old 07-16-2018, 08:41 AM
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Join Date: Sep 2007
Location: Calgary Alberta Canada
Posts: 1,091
Standard head gasket 1.74mm thick repair gasket 1.97 mm thick.
92 e300d2.5t
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Old 07-16-2018, 11:11 AM
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Join Date: Jun 2013
Location: Los Angeles
Posts: 17
Part numbers anyone?
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Old 07-17-2018, 11:12 PM
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Join Date: Jun 2013
Location: Los Angeles
Posts: 17
Found the head gasket info:

OES 603 016 32 20 and OES 603 016 34 20 correspond to:
REINZ 61-27005-40
Thickness 1.75 mm; bore 88.5 mm

OES 603 016 33 20 and OES 603 016 35 20 correspond to:
REINZ 61-27005-50
Thickness 2.00 mm; bore 88.5 mm
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