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Upgraded pcv for Ap2 valve cover?

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Old 10-01-2015, 12:24 PM
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Default Upgraded pcv for Ap2 valve cover?
What options are there for an upgraded pcv valve on an AP2 valve cover? I've seen mention of going to a Supra pcv on AP1 engines, but I assume that won't work since the AP2 pcv screws in. Has anyone tested the AP2 valve's resistance to boost pressure?
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Old 10-01-2015, 01:40 PM
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My supra is just shoved into a I believe 1/2in tubing

[attachment=85739::]
Attached Thumbnails Upgraded pcv for Ap2 valve cover?-image-2179221135.jpg  
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Old 10-01-2015, 02:53 PM
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Originally Posted by chefs2000
My supra is just shoved into a I believe 1/2in tubing

[attachment=85739::]
Are you saying it's the one screwed into the valve cover, or its inside the tubing?
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Old 10-01-2015, 02:57 PM
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I left the one in the valve cover and put a supra one in the tubing coming off of it
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Old 10-01-2015, 03:03 PM
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What's to upgrade on a PVC valve? OK I'm seeing you're boosted.

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Old 10-01-2015, 03:33 PM
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Originally Posted by chefs2000
I left the one in the valve cover and put a supra one in the tubing coming off of it
I did the same exact thing. Just cut the factory intake manifold->valve cover tube and put the supra PCV inline.
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Old 10-01-2015, 03:45 PM
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Why upgrade the PCV valve?
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Old 10-01-2015, 03:46 PM
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I'm totally not seeing it in chef's pic, lol

Is it the mkiv ('93-98) supra pcv that we use?
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Old 10-01-2015, 03:48 PM
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Originally Posted by beechx1
Why upgrade the PCV valve?
Ours aren't designed to withstand positive manifold pressure, allowing them to leak pressure into the crank case, which in theory will rob some power.
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Old 10-01-2015, 03:54 PM
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Hmmm... I'm only making 13.5 PSI with a C38-91 blower. I would expect more. Maybe my PCV is leaking. I'll cap it off and make a run to test it.
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