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Old 15-07-2014, 04:38 PM
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RAW454 RAW454 is offline
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Name: Deano
Valve Cover Baffles

Heayz, maybe not worth it's own thread, but .. pah - here we are

My GM Performance covers came without breather/filler hole or baffle. I got holes drilled for one breather and one PCV (that looks like a breather).
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However, the breather (curbside bank) lets a bit of oil through when I'm working it really hard etc. So I'd like to add a baffle.

The other GMPP cvovers come with a baffle like this..
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And I note you can get bolt-in ones similar (that could also be welded, I'm sure). Or piss-easy to get somehting fabricated & alloy-welded in.
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BUT, MY QUESTION: Any thoughts / experiences on these rubber insert baffles?
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Would be a lot quicker & easier for my application, but not sure if they allow enough 'breathing'? Any other issues?

Cheers!
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Old 15-07-2014, 07:34 PM
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DualQuad396 DualQuad396 is offline
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I've got two of these breathers , one as is and one I have modified to take my pcv valve


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Old 17-07-2014, 06:27 PM
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Thx Reece. Was kinda more wondering about the oil baffle than actual breather. You using the runner baffles? Ta tho.

Nobody here ever tried or knows anything about the rubber push-in style baffle shown? Or see any reason why not worth trying? Else will order some & find out
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Old 18-07-2014, 12:29 PM
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I had a similar problem with my Indy valve covers on my Roadrunner.

I installed these Aeroflow fittings, (left of pic) and ran the other side to an external catch can.



Only problem being, is the fitting must have been right over a high oil circulation point, and literally filled the catch can in an hour or two.

So I just bought a pair of these, and I will be trying them shortly.

http://www.ebay.com.au/itm/131198664255





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Old 18-07-2014, 12:33 PM
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DualQuad396 DualQuad396 is offline
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That Looks like it hangs low, hope they clear your rockers

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Old 18-07-2014, 12:54 PM
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Quote:
Originally Posted by DualQuad396 View Post
That Looks like it hangs low, hope they clear your rockers
Me or Deano?

My Valve Covers are actually very tall, the pic is just a cutaway the manufacturer supplied.
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Old 18-07-2014, 01:02 PM
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You can hear these calling out to you in the middle of the night Deano....

http://store.42draftdesigns.com/Catchcans.html

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Old 18-07-2014, 05:07 PM
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I was dreaming of a slightly different set of cans last night actually mate

Budget dictates I try the rubber insert baffles, then if no go, get somebody to weld some plates style ones (tht clear the roller rockers). Catch can/s would be an absolute last resort. Cheers.
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Old 18-07-2014, 05:08 PM
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These are much smaller and therefore require more frequent emptying.
http://jlttruecoldair.com/ZenCart/in...roducts_id=406

A mate of mine says they work very well and it may be a surprise as to how much oil is collected from a healthy engine.
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Old 18-07-2014, 09:58 PM
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Deano , maybe get something made similar to the originals and welded in ? There is a lot of pressure in the inside of a motor , the bigger the more ,remember there is over 454ci under the pistons spinning around and creating pressure , the baffle will stop oil being directly pushed out ,,and the pvc aint doing anything at full throttle , not much vacuum , that is why vacuum pumps are good . A lot of mercruiser boat motors (chevs) have 2 pvc valves feeding into the flame arrestor (boat version of aircleaner). They would have done that due to boats being operated at high loads and revs for extended periods. In the past people use to run a hose about an inch in diameter between the covers up high and have vents/Breather installed.

Cheers Andy
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Old 20-07-2014, 10:04 PM
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Quote:
Originally Posted by RAW454 View Post
Thx Reece. Was kinda more wondering about the oil baffle than actual breather. You using the runner baffles? Ta tho.

Nobody here ever tried or knows anything about the rubber push-in style baffle shown? Or see any reason why not worth trying? Else will order some & find out
They look really restrictive Deano,
On the street I run the PVC and vented oil filler cap on the other side and have had no issue.
I remove both of these in place of k&n breathers when I race.
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