STD Tuning Engine Om 617 Pistons

Om 617 Pistons

Om 617 Pistons

 
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zeeman
Holset

444
04-19-2017, 12:20 PM #1
There seems to be two styles of pistons for the turbo OM 617. The OEM Mercedes Noral with a solid skirt around the piston pin, and the Mahle with a recess on either side of the piston pin. Does anyone know what year has what piston.
This post was last modified: 04-19-2017, 12:21 PM by zeeman.
zeeman
04-19-2017, 12:20 PM #1

There seems to be two styles of pistons for the turbo OM 617. The OEM Mercedes Noral with a solid skirt around the piston pin, and the Mahle with a recess on either side of the piston pin. Does anyone know what year has what piston.

Evenglass
GT2256V

149
04-19-2017, 09:15 PM #2
Interesting. Those pistons are tough any reason for the change? Just curious.
Evenglass
04-19-2017, 09:15 PM #2

Interesting. Those pistons are tough any reason for the change? Just curious.

R-3350
Dreaming of compounds

182
04-19-2017, 10:04 PM #3
the only time i have seen the pistons with the recesses is in NA engines and generally only the after-market replacements.
R-3350
04-19-2017, 10:04 PM #3

the only time i have seen the pistons with the recesses is in NA engines and generally only the after-market replacements.

zeeman
Holset

444
04-20-2017, 12:34 AM #4
(04-19-2017, 10:04 PM)R-3350 the only time i have seen the pistons with the recesses is in NA engines and generally only the after-market replacements.

This is a core engine I got from a neighbor. and it was a turbo motor. I have another engine out of a car that only had 105,000 miles on it and it has the recessed pistons also.
This post was last modified: 04-20-2017, 12:46 AM by zeeman.
zeeman
04-20-2017, 12:34 AM #4

(04-19-2017, 10:04 PM)R-3350 the only time i have seen the pistons with the recesses is in NA engines and generally only the after-market replacements.

This is a core engine I got from a neighbor. and it was a turbo motor. I have another engine out of a car that only had 105,000 miles on it and it has the recessed pistons also.

zeeman
Holset

444
04-20-2017, 12:41 AM #5
(04-19-2017, 09:15 PM)Evenglass Interesting. Those pistons are tough any reason for the change? Just curious.

This was a core motor I got from my neighbor. When I tore it down it had #1 rod bearing out. The piston was beat up and #2 piston had some scoring from trash in the oil. I have three engines torn down and two of them have the recess skirts and one has the solid skirt.
zeeman
04-20-2017, 12:41 AM #5

(04-19-2017, 09:15 PM)Evenglass Interesting. Those pistons are tough any reason for the change? Just curious.

This was a core motor I got from my neighbor. When I tore it down it had #1 rod bearing out. The piston was beat up and #2 piston had some scoring from trash in the oil. I have three engines torn down and two of them have the recess skirts and one has the solid skirt.

 
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