Evo valve cover baffles
Evo valve cover baffles
Are the blaffles in the valve cover needed? Would I have any problems running a cover without the baffles in it. I sand blasted my cover and I wasnt thinking enought to cover the bottom side and I just want to make sure all the sand is out from under them.
without the baffles it would appear at least superficially that you'll get more oil from the two breather ports in the valve cover. if you run a decent catch-can, this might not be an issue.
I recall reading some where (not sure if it was a DSM forum or here) that some one had powder coated their valve cover and due to the sand that was stuck in there, he wound up having motor issues down the road.
When the motor was pulled, sand wound up being the culprit. I know it's not much help, I'll see if I can dig up the link.
When the motor was pulled, sand wound up being the culprit. I know it's not much help, I'll see if I can dig up the link.
Ya I only had my car idle for a few minutes last night with the valve cover on. I spent a good 2 hours soaking it in hot water with soap and then kept rinsing it out till no more sand came out. I just want to be 100% sure that there is no more sand in there. Im pulling the valve cover back off tonight and removing the baffles, I just dont know how to re attach them on since the cover is magnesium and the baffles seem to be sheet metal
Not the link I was looking for but.....it should have been bead blasted and the bottom covered.
https://www.evolutionm.net/forums/ev...lve-cover.html
https://www.evolutionm.net/forums/ev...lve-cover.html
I removed the baffles from mine to drill and tap it for breathers. You really need to do this to ensure it is clean. You can use a sharp punch and tap the heads off the studs that holds the baffle on. Carefully remove the baffle, starting on one side. I'm going to then smooth off the studs with a sanding roll to make the surface flat, then drill and tap the holes for new button heads bolts. Red Loctite is recommended.
The baffle helps keep the oil out of your breather. Otherwise, the cams/valvetrain are slinging oil everywhere.
The baffle helps keep the oil out of your breather. Otherwise, the cams/valvetrain are slinging oil everywhere.
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i know this is older thread...just wondering if it would really matter.....if i just used an oil catch can would it still not be a good idea....i really dont feel like dealing with the issue so i thought using a catch can would work?
is this a working idea?
is this a working idea?
The conventional wisdom is DON'T SANDBLAST OR BEAD BLAST YOUR VALVE COVER. If you did, throw it away, or drill out and remove the baffles so you can clean it properly. Many motors lost over this problem...
Bring this back because there was never a conclusion. Same thing happened to me and I want to remove the baffles to clean under them and I'd like to know if I can just leave the baffles out. I do have a buschur catch can.
you will be getting tons of oil in your catch can, and probably have to drain it once a week from what I've read on DSM forums...
The other option is knock the heads off the rivets, drill, tap and install low profile allen head hardware with red loctite to re-install the baffles... Only hazard is the bolts backing out and falling into your valve train which would be detrimental to the motor.
I was going to do this, but decided to just wash the crap out of the valve cover in the bathtub. I got tons of sand out actually and just kept doing this until the water was clean.
Submerge the valve cover in the water and let the area above the baffles fill with water, pull the valve cover out of the water and shake the living **** out of it until all the water drains out the breather holes and repeat until you're satisfied... took me about 30 good shakes to make me comfortable, but it's still a roll of the dice compared to actually removing and re-installing the baffles.
The other option is knock the heads off the rivets, drill, tap and install low profile allen head hardware with red loctite to re-install the baffles... Only hazard is the bolts backing out and falling into your valve train which would be detrimental to the motor.
I was going to do this, but decided to just wash the crap out of the valve cover in the bathtub. I got tons of sand out actually and just kept doing this until the water was clean.
Submerge the valve cover in the water and let the area above the baffles fill with water, pull the valve cover out of the water and shake the living **** out of it until all the water drains out the breather holes and repeat until you're satisfied... took me about 30 good shakes to make me comfortable, but it's still a roll of the dice compared to actually removing and re-installing the baffles.
Submerge the valve cover in the water and let the area above the baffles fill with water, pull the valve cover out of the water and shake the living **** out of it until all the water drains out the breather holes and repeat until you're satisfied... took me about 30 good shakes to make me comfortable, but it's still a roll of the dice compared to actually removing and re-installing the baffles.


