Hemi Pcv

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lefty70

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Hello I’m trying to install an adequate pcv system in my Hemi. I am using a Mopar Performance efi manifold with a 4150 flanged throttle body. The pcv port is located directly under the fuel rail with only enough clearance for a tiny Toyota plastic valve. I’d like to plug that hole and make a hole in my plastic valve cover, but I’m not sure if that’ll work correctly. Thoughts?
 
Hello I’m trying to install an adequate pcv system in my Hemi. I am using a Mopar Performance efi manifold with a 4150 flanged throttle body. The pcv port is located directly under the fuel rail with only enough clearance for a tiny Toyota plastic valve. I’d like to plug that hole and make a hole in my plastic valve cover, but I’m not sure if that’ll work correctly. Thoughts?
Suggest post a photo of the area.
 
Suggest post a photo of the area.
I can, my question is could I relocate the pcv. There isn’t enough room for one in the existing hole. There was an install kit available for the intake at one point, no longer available. Imagine the hole directly under the RH fuel rail with about 3/4” clearance. It’s a stock 2003-2008 style crate motor.
 
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I can, my question is could I relocate the pcv. There isn’t enough room for one in the existing whole. There was an install kit available for the intake at one point, no longer available. Imagine the hole directly under the RH fuel rail with about 3/4” clearance. It’s a stock 2003-2008 style crate motor.
I don`t see why u couldn`t install it between the rockers for clearance, and add a splash plate.
 
Suggest post a photo of the area.
The red arrow shows the small pcv hole. It directly inline and covered by my Arrington fuel rail.

HEMI MANIFOLD.png
 
wow, sounds like a well thot out piece. maybe a special pcv for it ??
Yeah they had an install kit. No longer available. I work at a dealer and have looked at every pcv for possible fitment. I’m thinking I could also install a 90 degree elbow then use an inline pcv, maybe?
 
Yeah they had an install kit. No longer available. I work at a dealer and have looked at every pcv for possible fitment. I’m thinking I could also install a 90 degree elbow then use an inline pcv, maybe?

A 90 should work fine
Jim
 
That manifold was used on the first MP 5.7 crate motor. I had one for the start of my build (evolved to a 6.2 HC). I'm pretty sure it had a 90 degree nippled fitting for an in line valve. I'll find my original paperwork that came with that engine. There's pics, etc.
 
That manifold was used on the first MP 5.7 crate motor. I had one for the start of my build (evolved to a 6.2 HC). I'm pretty sure it had a 90 degree nippled fitting for an in line valve. I'll find my original paperwork that came with that engine. There's pics, etc.
Awesome!!!
 
So I could only find about half of my documentation from the MP 5.7 crate I had. I was able to find only one, very clear picture of the manifold that shows that port. However, it the carb version of the manifold but should still help. There is a straight, pressed fit, nippled fitting in that port for a hose with in line PCV valve. I remember a similar, but 90 degree fitting in the one I had.

I think if it were my manifold, I would tap the hole and screw a 90 degree brass fitting in there and then put an in line PCP in there. Hope this helps.
 
There's nowhere in the throttle body for a fitting? No room to tap one?
 
So I could only find about half of my documentation from the MP 5.7 crate I had. I was able to find only one, very clear picture of the manifold that shows that port. However, it the carb version of the manifold but should still help. There is a straight, pressed fit, nippled fitting in that port for a hose with in line PCV valve. I remember a similar, but 90 degree fitting in the one I had.

I think if it were my manifold, I would tap the hole and screw a 90 degree brass fitting in there and then put an in line PCP in there. Hope this helps.
That's the same decision I've made. I'm going to take the manifold off to tap it. I can't think of a way to keep debris from not getting into the crankcase without. thanks for looking into this sir.
 
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