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+--- Thread: spare head for 617 95X (/showthread.php?tid=8019)
spare head for 617 95X - MTUPower - 03-29-2018
I bought a wagon block with the head and it's in my garage. I read somewhere where someone had ported the head on his MB diesel and the results were another 5% more power or so. Who has experience with this and where can I send my head to to get this done? I'd like to put a new turbo on and increase the exhaust to 3 inches, plus increase the holes in the prechambers even more than they are after I made them bigger. Give even more advance timing as well.
Please advise as to head porting or any other mods... thx
RE: spare head for 617 95X - R-3350 - 03-29-2018
iv done a few 617 heads now and i would say that with a larger turbo the effects are more than 5%. that being said there is some risk in porting these heads far enough to really make a difference as you can breach the port walls into the coolant jacket. also its a very long process i spent something like 30 hours on the last one i did.
RE: spare head for 617 95X - MTUPower - 04-02-2018
looks like I have to find a engine head shop via google and send it to them for flow analysis and porting.
RE: spare head for 617 95X - NZScott - 04-03-2018
How hard is ultrasonic depth measuring stuff to come by if we want to get rather keen with the die grinder? Probably need a mortgage?
RE: spare head for 617 95X - R-3350 - 04-03-2018
the ultrasonic units that are easily available work ok and aren't too expensive however the transducer heads are a bit large to work in all the sections of the ports. i used to have access to some nice NDT equipment i used when i did the first head for my car. i worked out that the 617 heads don't tend to have much core shift at most 2-3MM in the thicker sections with port wall thickness around 7-8mm at its thinest. i have some photos from cutting a head into sections somewhere but i cant find them. as for flow benching a head and having a professional port them all the shops i talked to that i would trust to really know what they are doing either didn't want to touch it once i mentioned it was a Mercedes and diesel or wanted well into the 4 figure range to do it. you can do what i did and build your own flow bench and do a lot of research. its not like heads are all that rare or expensive.
RE: spare head for 617 95X - atypicalguy - 04-04-2018
The wagon heads are quite rare in good, rebuildable condition.
RE: spare head for 617 95X - MTUPower - 04-05-2018
There's a shop in NC which I've been talking to which seems like they will be able and willing to do this for me.