My New Project
I'd like to do this one day if I ever want to trash my AMG motor. Maybe at >150k miles.
Advice - take it or leave it - I have a thread floating around about benefits of running the SL55 v SLK32/C32 IHI Kompressor. If you wanted to make the task simpler - I'd go with a 178/65 pulley combo on the S105 IHI (SLK32/C32) before I'd move to the larger IHI unit used on the SL55.
It will make the job much easier, you can retain your Intakes/Pulleys etc. and the larger SC upgrade can be done at another time - if by that stage, you still think you need another 20% air/hp....;>)
my2c
3.7L from the ML350 engine 2005 + 55 kompressor:
-3.7L cylinder block
-C32 oil pump and pan
-C32 crankshaft
-C32 rods, 55K pistons
-3.7L heads with C32 camshafts and 55K springs and valves
- 55 kompressor with 2 inlets cutted on each side to fit 6 cylinder
- 55 AMG intake tanks also cutted to fit 6 cylinder and to fit top mount intercooler
- C32 oem intercooler below 55 SC plus 2 top mount aftermarket intercoolers, 2 pumps in parallele to fit them
- 2 HE's with rear tank (installed)
- 172 to 185mm 55 crank pulley(we'll decide which pulley after we look what the boost will be) with all other 55K pulleys installed on the C32 front engine wall with 55K thermostat
- loop fuel rail with 550cc injectors, adjustable fuel regulator
- air filter directly sitted on the TB and feed from the engine hood
- 80mm tb (installed)
- long tube headers, catless (installed)
- colder spark plugs and wires (installed)
-EC TCU manual speedshift with 6500 rpm(installed)
and ofcourse Jerry fine tune.
goal: 500whp-600bhp
(now i am at 380/400 whp-473bhp)
it's alot work especially that we have to take apart the 3 engine(350, E55 and C32) and make from them one engine.
i have a blown 55K engine that i'll take 6 pistons, valves, springs and pulleys from it.
the C32 engine is from my car
the Ml350 engine i bought it used, cheap
i'll swap my C32 kompressor and some other parts with the 55 Kompressor
so the project will not cost me alot.
Pics attached.
350 Block:
Attachment 228623
350 heads and pistons:
Attachment 228624
E55K and C32K:
Attachment 228625
E55 left 350 right:
Attachment 228626
E55 komp on c32 engine for testing fitment:
Attachment 228627
Which one i choose?

Attachment 228628
Thank you for the detailed thread on your build. I’m undertaking a similar build with a Crossfire SRT-6. I sourced a ML350 E37 engine and I have Stage III Needswings heads and SLR spec camshafts.
I’m confused about what pistons I need. Do I want NA M113 pistons? I have a line on a set. Or do I need 55K pistons. From what I read it appears that you utilized the NA M113 pistons.
Kindly,
Miguel




