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  #16  
Old 06-16-2017, 01:14 PM
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Please do! I'll be gone to FL for July and August for cancer treatment but other than that I'm around.

Dan
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  #17  
Old 06-17-2017, 11:35 AM
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Quote:
Originally Posted by R-3350 View Post
here's how i adapted the drain line to the block not elegant but it works.

Here is how I did mine...



The large fitting gets JBWeld-ed into the upper oil pan and connected to a standard AN-10 turbo drain fitting with stainless braided hose. The smaller fittings were made for my catch can drain hose which uses -6 hose.

Since these are essentially zero pressure applications, my tolerances are definitely good enough - though obviously not mil-spec.
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Expiremental OM617 build-img_1206.jpg  
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  #18  
Old 06-18-2017, 12:05 AM
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that early adapter worked for a while but i have since welded an AN10 bund into the side of the upper oil pan. as for the blow-by port i did some testing and found the stock port is too restrictive if you plan on running more than stock boost due to the ring end gaps being so loose on these engines. as such i drilled two holes in the upper plenum behind the oil separation baffle in the valve cover and ran two AN10 lines to a oil vapor separator which discharges into the bottom of the valve cover by the timing chain hump. the blow-by is the sent to an extractor venturi in my down pipe. something interesting to note is that a lot of the generic OM617 oil leaks stopped once i had done this it seems the stock case pressure management system is insufficient to prevent some build up and thus pushes some oil out various seals.
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1985 300D om617: 8mm M pump 175cc 5200rpm, holset he221w @ 30psi, large A2W ic, compounds on the way.
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  #19  
Old 06-20-2017, 03:46 PM
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Location: Baltimore, MD
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I'm glad to see someone else porting their manifolds, those stock castings are mediocre at best.

I'd really like to hear how the cam turns out, that's the one bit I haven't looking into yet. Do you think it will harm the street manners?
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$110 OM606 Blank Exhaust Flanges
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  #20  
Old 06-20-2017, 09:11 PM
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Originally Posted by Simpler=Better View Post
I'm glad to see someone else porting their manifolds, those stock castings are mediocre at best.

I'd really like to hear how the cam turns out, that's the one bit I haven't looking into yet. Do you think it will harm the street manners?

Um - what are street manners?

(Not part of my agenda.......)

Dan
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  #21  
Old 06-21-2017, 04:29 AM
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the stock cam is kind of ridiculously bad. not so much if you consider the stock port size, geometry, and manifolds plus the early t3 turbine but once you remove those restrictions it becomes a major limiter. the stock lift is something like .313/.325 with duration @ somewhere around 230*. the rockers are almost the worst part of the problem i will give them credit the carbide facing with the hardened cam solved a lot of issues with that set up but the stock ratio is 1.05:1 with no real room to improve that or even integrate a roller element to allow for bigger/more aggressive ramps.
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1985 300D om617: 8mm M pump 175cc 5200rpm, holset he221w @ 30psi, large A2W ic, compounds on the way.
KD9AFT
A&P
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  #22  
Old 06-25-2017, 12:27 PM
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Wow! awesome work. keep posting! I want to improve my wagon more all the time and you've gone further than Dan or myself by a long shot.
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  #23  
Old 06-27-2017, 04:01 PM
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Quote:
Originally Posted by R-3350 View Post
the stock cam is kind of ridiculously bad. not so much if you consider the stock port size, geometry, and manifolds plus the early t3 turbine but once you remove those restrictions it becomes a major limiter. the stock lift is something like .313/.325 with duration @ somewhere around 230*. the rockers are almost the worst part of the problem i will give them credit the carbide facing with the hardened cam solved a lot of issues with that set up but the stock ratio is 1.05:1 with no real room to improve that or even integrate a roller element to allow for bigger/more aggressive ramps.
Would it be possible to:
-Space the cam towers higher
-Grind a new cam with rollers
-Extend the timing chain
-Make a taller valve cover
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$60 OM617 Blank Exhaust Flanges
$110 OM606 Blank Exhaust Flanges
617.952-220k-Ported head, 2056V, No ALDA/SALSA
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  #24  
Old 07-04-2017, 10:41 PM
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Quote:
Originally Posted by Simpler=Better View Post
Would it be possible to:
-Space the cam towers higher
-Grind a new cam with rollers
-Extend the timing chain
-Make a taller valve cover
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  #25  
Old 07-07-2017, 12:12 AM
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Sorry to hijack, but - any chance you can tell me how I can get registered in STD? I've registered, but still waiting for confirmation now
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  #26  
Old 07-07-2017, 05:03 AM
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I think winmutt must approve you on STD, and he doesn't come around much anymore, but eventually you'll get in.
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  #27  
Old 07-13-2017, 12:39 PM
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Quote:
Originally Posted by rorax View Post
They make roller caps for old I6 engine, they just have the little straps to keep form rotating. If you were hell bent on it that's the way to go.
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$60 OM617 Blank Exhaust Flanges
$110 OM606 Blank Exhaust Flanges
617.952-220k-Ported head, 2056V, No ALDA/SALSA
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  #28  
Old 07-13-2017, 10:14 PM
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R-3350, Do you have ability to make a folder on google full of your pics or something similar? Image hosting is a paid service now, whoever's great idea that was. Embedded or not. Also, I'm interested where you got your bronze valve guides

Last edited by rorax; 07-13-2017 at 10:15 PM. Reason: error
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  #29  
Old 07-14-2017, 05:03 AM
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you should be able to view all my images on photobucket directly (R-3350's Library | Photobucket) i think they are only blocking 3rd party hosting (for now). as for the roller conversion i have thought of it for a while even modeled some geometries in my FEA package. i ended up concluding the benefit is not worth the effort of redesigning the entire valve train. the later 617 rockers with the TC faces solved a lot of the cam wear issues and as for the friction losses in the contact faces its not enough to be a real issue. as for cam ramp geometry improvement with the rollers the main issue then becomes the ability of the engine to appreciate a much larger cam as the port geometries are so woefully inadequate even with reworking im not sure we need an aggressive cam or more accurately could actually use one to its full potential. i am working on developing a new cam and while its a bit more than stock i doubt it will be to aggressive im looking at a bit more lift to work with the port work i did but not much more duration as the power band of the 617 is pretty close to optimal for the engine architecture. if you could destroke a 617 and bore it out a bit then maybe you could go a lot bigger but otherwise its not worth it.

for anyone interested the stock cam is around 190-220* advertized (its hard to say as the rocker face radius plays into the cam timing and lift). and lift is around .310" the rocker ratio is somewhere in the region of 1.05:1. so all in all quite mild
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1985 300D om617: 8mm M pump 175cc 5200rpm, holset he221w @ 30psi, large A2W ic, compounds on the way.
KD9AFT
A&P
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  #30  
Old 08-20-2017, 12:03 PM
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How did you port out your intake manifold? With a dremel?
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