Crankcase Evacuation Kit and Ceramic Coated Headers

[ykf7b0]

I am soon to install some Hooker ceramic coated headers and I will be needing to weld nipples for the Moroso crankcase evacuation kit into the collectors. What should I expect and what procedure should I follow when I attempt to weld with the ceramic coating in place?

 

[ozymaxwedge]

Yep, use a flap/sand disc to remove the coating around the spot before welding. Mine are in the collector on about a 45 deg angle.

Up the top have you got your rocker covers venting from the front ? You need to.

 

[Homstead]

That's beautiful ozy!

 

[Mike Gaines]

Yep, use a flap/sand disc to remove the coating around the spot before welding. Mine are in the collector on about a 45 deg angle.

Up the top have you got your rocker covers venting from the front ? You need to.

Ozy....Just what the heck is going on under that Dominator with those adapters, spacers, lines, etc..PLEASE TELL US....LOOKS REALLY INTERESTING.
(Is it maz wedge head ports ? Is it a max wedge port intake manifold ? etc, etc ???

 

[Crizila]

You are going to have to get down to bare metal around the bung you are going to weld in ( grind / sand ). You can't weld on that coating. Then just heat paint the area to match your coating color. Best you can do.

 

[ykf7b0]

Up the top have you got your rocker covers venting from the front ? You need to.

I did not know this. Thanks Ozy!!!

You are going to have to get down to bare metal around the bung you are going to weld in ( grind / sand ). You can't weld on that coating. Then just heat paint the area to match your coating color. Best you can do.

Thanks!!!

 

[ozymaxwedge]

You only vent from the front because a big mopar can fill the rear of the covers with oil when you are giving them a hard time.

- - - Updated - - -

Ozy....Just what the heck is going on under that Dominator with those adapters, spacers, lines, etc..PLEASE TELL US....LOOKS REALLY INTERESTING.
(Is it maz wedge head ports ? Is it a max wedge port intake manifold ? etc, etc ???

Hi Mike, it is an Indy 4150 single plane, 1/2 nitrous plate with solenoids, 4150-4500 2" spacer/adaptor, 1090 King Demon on top of Max Wedge port 370 cfm SR heads. Front mount ali fuel cell with BG 400 pump feeding the 4 port BG reg, 2 ports to carb, 1 port to N20 solenoid and 1 port to fuel pressure gauge.

ccasion14:

- - - Updated - - -

Has run a best of 9.23 @ 145 with a 150 shot

 

[Budnicks]

Probably a good idea to have some kind of a baffle under the vents in the VC's too...

It helps from getting oil in the exhaust as much, just basically it's an overall good idea too...

My $0.02 cents

 

[ykf7b0]

I need valve cover manufactorer recommendations that provide baffled holes located in the front of engine on both sides. I'm not locating any on the web. Thanks!!

 

[Longroof]

I ran my small block with a breather in front and one in the back.. but then again on a race engine you should be restricting the oil to the top end so you don't have the problem of filling the valve cover with oil... on a drag car restrict oiling to the valve train and you won't have these type of issues. But you still need the baffle below the breathers.

 

[ykf7b0]

My current set up is with one excavation breather in front and one in rear of valve covers. I've had it this way since early 2000 but I will change this and have both sides on front if I can locate some baffled front hole valve covers. I think I do lose some oil through the excavation on one side.

 

[Shorthorse]

I'm not sure how it effects the efficiency of the evacuation system but you can weld the evac tubes to collector extensions.

 

[ykf7b0]

I'm not sure how it effects the efficiency of the evacuation system but you can weld the evac tubes to collector extensions.
View attachment 295717

I have read that around 12 inches from where the four tubes come together in the collector is optimum.

 

[ykf7b0]

You only vent from the front because a big mopar can fill the rear of the covers with oil when you are giving them a hard time.

Ozy, did you drill those M/T valve covers for the front breathers yourself? Do you have baffles under the breathers?
Thanks!

 

[ozymaxwedge]

You only vent from the front because a big mopar can fill the rear of the covers with oil when you are giving them a hard time.

Ozy, did you drill those M/T valve covers for the front breathers yourself? Do you have baffles under the breathers?
Thanks!

I did have to modify the right side cover, welded cap can be seen in the pick and yes drilled the hole at the front. No baffle in my covers but I do remember having to silicon seal the underside of the Vac U Pan vents because they dripped a little oil at the seam, they are 2 piece construction. Baffles welded into the covers might be good if you have rocker clearance.


What do they recommend for the pipe fitting that is welded into the collector as far as cut it on an angle or leave it straight ?

 

[ykf7b0]

What do they recommend for the pipe fitting that is welded into the collector as far as cut it on an angle or leave it straight ?

Mine are Moroso and they came cut 45 degree's I do believe.

 

[Shorthorse]

Mine are Moroso and they came cut 45 degree's I do believe.

Yes, install at a 45 degree angle with the angle cut being parallel with the tubes. If you want to increase the integrity of the seal, install positive locking breathers that are threaded as opposed to a grommet/push in type breather.

 

[Wookie316]

These Moroso breathers have the baffle built right into them. I also put the tubes in the collector after the header. Setup works great. Had to drill my own holes in the valve covers. Used painters tape for protection and a step drill bit. Worked perfect.

 

[ykf7b0]

These Moroso breathers have the baffle built right into them. I also put the tubes in the collector after the header. Setup works great. Had to drill my own holes in the valve covers. Used painters tape for protection and a step drill bit. Worked perfect.

Looks really clean!!!