om616, 617 exhaust manifold
om616, 617 exhaust manifold
BraaaP!
What sound does the turbo make captain? PSssssssss!?
616 turbo?!
No. Material around the valves is the limit to airflow through the engine.
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!
(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!
(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!
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.
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.
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!
Hmmm. that does makes sense.... How about polishing the piston too?
WI is better for that, plus you get extra power and cooler air.
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?
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).
(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).
(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).
(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.
(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.
(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).
(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).
(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!
(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!
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?
(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?
(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?
(07-28-2010, 11:21 AM)garage Thanks!
(07-28-2010, 11:21 AM)garage Thanks!