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+--- Thread: om616, 617 exhaust manifold (/showthread.php?tid=1521)
om616, 617 exhaust manifold - garage - 07-24-2010
Does anyone have any knowledge as to if the turbo om617 exhaust manifold would match the block of the om616, minus the last port?
RE: om616, 617 exhaust manifold - ForcedInduction - 07-24-2010
Yep.
RE: om616, 617 exhaust manifold - garage - 07-24-2010
Cool! If all the ports match up that will be great!
RE: om616, 617 exhaust manifold - Captain America - 07-24-2010
BraaaP!
RE: om616, 617 exhaust manifold - garage - 07-24-2010
What sound does the turbo make captain? PSssssssss!?
616 turbo?!
Hey Forced how do i remove the idle adjust knob on the dash? Im removing my dash to rip out the rest of my ac and heater, but im stuck here already ha.
Nevermind i got it, that was simple haha
RE: om616, 617 exhaust manifold - garage - 07-24-2010
Would porting and polishing the intake and exhaust ports on the manifolds WITHOUT porting and polishing the ports on the block be worth it?make any difference?
RE: om616, 617 exhaust manifold - ForcedInduction - 07-24-2010
No. Material around the valves is the limit to airflow through the engine.
RE: om616, 617 exhaust manifold - garage - 07-24-2010
So would porting and polishing both do anything with our diesels?
RE: om616, 617 exhaust manifold - willbhere4u - 07-25-2010
the only thing that would matter is to make sure all of the ports are matched to the gasket and head
any real power beyond that would require porting the head
also from my experience at the race shop polishing is not needed and actually will loose power! you need a mildly ruff surface for the air to go over think of it like how a golf ball works!
RE: om616, 617 exhaust manifold - garage - 07-25-2010
(07-25-2010, 12:06 AM)willbhere4u the only thing that would matter is to make sure all of the ports are matched to the gasket and head
any real power beyond that would require porting the head
also from my experience at the race shop polishing is not needed and actually will loose power! you need a mildly ruff surface for the air to go over think of it like how a golf ball works!
Well that makes sense about polishing.
So would porting the head be worth the effort?
As far as matching a om617 turbo exhaust manifold, to the om616 block..
I was looking at the 617manifold, and it looks as if the last unused port would have to be plugged somehow, and not cut off and welded shut like would have hoped to do.
The 4th and 5th ports are on one runner together.
am i right?..
RE: om616, 617 exhaust manifold - ForcedInduction - 07-25-2010
Porting wouldn't be worth doing it just for that. I'd get a spare junkyard head, get it ported and eventually swap it when you need a headgasket or stronger head bolts.
RE: om616, 617 exhaust manifold - Captain America - 07-26-2010
Yeah, Polishing isn't good for gas motors with a wet intake manifold. The air needs to have turbulence to keep the fuel suspended (atomized). Now with diesels, I don't see it as being a problem. I would polish mine, except that I wouldn't bother spending the time. What I would do is just make sure everything has smooth transitions after or even before you port. Like smooth the ridges and do some port matching as Willbhere4u said with a dremel and that will be good. Even if the manifolds/head doesn't flow more air, if it is more efficient at flowing that air it does now, that will be improvement enough.
RE: om616, 617 exhaust manifold - willbhere4u - 07-26-2010
I've heard polishing the combustion chamber isn't to bad! I heard it doesn't create much power but that it reduces carbon build up? I guess it doesn't stick as well to a polished surface! I'd like to hear someone else chime in on that before I would attempt it!
RE: om616, 617 exhaust manifold - Captain America - 07-26-2010
Hmmm. that does makes sense.... How about polishing the piston too?
RE: om616, 617 exhaust manifold - ForcedInduction - 07-27-2010
WI is better for that, plus you get extra power and cooler air.
RE: om616, 617 exhaust manifold - willbhere4u - 07-27-2010
whats the best way to plug the last port? on an om617 to 616 manifold swap?
I was thinking have it cut off and welded up? but being cast that might be tricky
or just fab up and mount an external waste gate to the last port?
RE: om616, 617 exhaust manifold - mk216v - 07-27-2010
There was a really great article about head porting for turbo diesels in a recent automotive trade mag(Engine Professional). I don't have a scanner but if anyone else does, I'd be happy to fax the article to them if they can scan and post it. Lots of good info. (As well, another great article in the same mag regarding coatings for TD's).
RE: om616, 617 exhaust manifold - Captain America - 07-27-2010
(07-27-2010, 11:12 PM)mk216v There was a really great article about head porting for turbo diesels in a recent automotive trade mag(Engine Professional). I don't have a scanner but if anyone else does, I'd be happy to fax the article to them if they can scan and post it. Lots of good info. (As well, another great article in the same mag regarding coatings for TD's).
I can do it.
RE: om616, 617 exhaust manifold - mk216v - 07-27-2010
(07-27-2010, 11:30 PM)Captain America(07-27-2010, 11:12 PM)mk216v There was a really great article about head porting for turbo diesels in a recent automotive trade mag(Engine Professional). I don't have a scanner but if anyone else does, I'd be happy to fax the article to them if they can scan and post it. Lots of good info. (As well, another great article in the same mag regarding coatings for TD's).
I can do it.
Awesome thx! Feel free to PM me your fax number and I'll fax it to you first thing in the am.
RE: om616, 617 exhaust manifold - garage - 07-28-2010
(07-27-2010, 11:12 PM)mk216v There was a really great article about head porting for turbo diesels in a recent automotive trade mag(Engine Professional). I don't have a scanner but if anyone else does, I'd be happy to fax the article to them if they can scan and post it. Lots of good info. (As well, another great article in the same mag regarding coatings for TD's).
That would be a great read!
RE: om616, 617 exhaust manifold - mk216v - 07-28-2010
(07-28-2010, 09:53 AM)garage(07-27-2010, 11:12 PM)mk216v There was a really great article about head porting for turbo diesels in a recent automotive trade mag(Engine Professional). I don't have a scanner but if anyone else does, I'd be happy to fax the article to them if they can scan and post it. Lots of good info. (As well, another great article in the same mag regarding coatings for TD's).
That would be a great read!
I just faxed the article (as well as coatings and propane inj) to CaptAmerica. I've asked him to post 3 new threads--I'll crosslink from here for you.
RE: om616, 617 exhaust manifold - garage - 07-28-2010
Thanks!
RE: om616, 617 exhaust manifold - willbhere4u - 07-28-2010
bump!
whats the best way to plug the last port? on an om617 to 616 manifold swap?
I was thinking have it cut off and welded up? but being cast that might be tricky
or just fab up and mount an external waste gate to the last port?
RE: om616, 617 exhaust manifold - garage - 07-28-2010
(07-28-2010, 12:34 PM)willbhere4u bump!
whats the best way to plug the last port? on an om617 to 616 manifold swap?
I was thinking have it cut off and welded up? but being cast that might be tricky
or just fab up and mount an external waste gate to the last port?
Cut off and welded up would be my choice i belive.
But after thinking about it, im highly considering getting headers made and getting rid of the manifold all together
RE: om616, 617 exhaust manifold - mk216v - 07-29-2010
(07-28-2010, 11:21 AM)garage Thanks!
Here are the links thanks to CaptAmerica;
Coatings
http://www.superturbodiesel.com/std/what-should-i-expect-from-coating-my-engine-t-1543.html
Propane Inj
http://www.superturbodiesel.com/std/propane-diesel-injection-t-1545.html
Head Porting
http://www.superturbodiesel.com/std/performance-diesel-head-and-engine-preps-t-1544.html