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+--- Thread: OM617a vs. OM617 (/showthread.php?tid=5029)
OM617a vs. OM617 - Odd Fellow - 10-17-2013
My 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?
RE: OM617a vs. OM617 - swampmonkey - 10-17-2013
om617a = 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.
RE: OM617a vs. OM617 - Simpler=Better - 10-17-2013
The 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.
RE: OM617a vs. OM617 - DeliveryValve - 10-17-2013
(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.
RE: OM617a vs. OM617 - wolverine - 10-18-2013
(10-17-2013, 02:07 AM)Odd Fellow What is an om617a?
And how does it compare to an om617?
617a pistons are made of super rare "UNOBTANIUM"
617 pistons are made of "WEGOT5000INSTOCKWHATOVERSIZEYOUNEED"
RE: OM617a vs. OM617 - Odd Fellow - 10-19-2013
'Bout what I had figured. thank ya kindly.