OM617a vs. OM617
OM617a vs. OM617
I understand that this may be a "beaten into the dust" kind of question, but...
What in the hell is an "OM617a"?
Just when I thought I knew about Mercedes diesel engines, I hear mention of this thing.
So if somebody would please clear this up for me and others.
What is an om617a?
And how does it compare to an om617?
*DD*
1983 300SD 226K Miles
*in repairs*
1991 Plymouth Laser RS 210K miles
(Needs Cam Angle Sensor)
Odd Fellow
10-17-2013, 02:07 AM #1My apologies.
I understand that this may be a "beaten into the dust" kind of question, but...
What in the hell is an "OM617a"?
Just when I thought I knew about Mercedes diesel engines, I hear mention of this thing.
So if somebody would please clear this up for me and others.
What is an om617a?
And how does it compare to an om617?
*DD*
1983 300SD 226K Miles
*in repairs*
1991 Plymouth Laser RS 210K miles
(Needs Cam Angle Sensor)
om617 = NA
from what i know, the turbo has oilsquirters under the pistons where the 617 dont.
(different injectionpump etc etc.)
to get your 200whp, a 617a with a 617injectionpump is probably the way to go. (+turbo IC etc)
it is cheaper and better to get different elements in the NA-pump (m-pump)
the turbo617 has a mw-pump.
---------------------------------
daily driver
w115 240d 72hp 3.07 rearend
w123 om602 turbo 200whp 7.5mm pump fivespeed 3.07 rearend
+ a few more.
mbturbo.com
swampmonkey
10-17-2013, 04:31 AM #2om617a = turbo
om617 = NA
from what i know, the turbo has oilsquirters under the pistons where the 617 dont.
(different injectionpump etc etc.)
to get your 200whp, a 617a with a 617injectionpump is probably the way to go. (+turbo IC etc)
it is cheaper and better to get different elements in the NA-pump (m-pump)
the turbo617 has a mw-pump.
---------------------------------
daily driver
w115 240d 72hp 3.07 rearend
w123 om602 turbo 200whp 7.5mm pump fivespeed 3.07 rearend
+ a few more.
mbturbo.com
the 617 (Naturally aspirated) has a weaker crank, no squirters, regular valves, and a different oil pan bolt pattern. M pump comes stock. many tuners for the m pump (dieselmenken comes to mind)
Also, the rods may or may not be different I don't know.
Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?
Simpler=Better
10-17-2013, 07:53 AM #3The 617a (turbo) has a stronger crank, piston squirters, different cam, sodium filled exhaust valves, and a different oil pan bolt pattern. MW pump comes stock. MW pump is more sophisticated but not a lot of tuners out there.
the 617 (Naturally aspirated) has a weaker crank, no squirters, regular valves, and a different oil pan bolt pattern. M pump comes stock. many tuners for the m pump (dieselmenken comes to mind)
Also, the rods may or may not be different I don't know.
Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?
(10-17-2013, 07:53 AM)Simpler=Better ...
Also, the rods may or may not be different I don't know.
Yes they are. The 617a rods accept a larger diameter piston wrist pin compared to the n/a 617.
Gota love Mercedes Diesels!
.
DeliveryValve
10-17-2013, 08:54 AM #4(10-17-2013, 07:53 AM)Simpler=Better ...
Also, the rods may or may not be different I don't know.
Yes they are. The 617a rods accept a larger diameter piston wrist pin compared to the n/a 617.
Gota love Mercedes Diesels!
.
*DD*
1983 300SD 226K Miles
*in repairs*
1991 Plymouth Laser RS 210K miles
(Needs Cam Angle Sensor)
Odd Fellow
10-19-2013, 04:04 AM #6'Bout what I had figured. thank ya kindly.
*DD*
1983 300SD 226K Miles
*in repairs*
1991 Plymouth Laser RS 210K miles
(Needs Cam Angle Sensor)
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