Upgraded pcv for Ap2 valve cover?

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Oct 1, 2015 | 04:42 PM

#11

chefs2000

Joined: May 2010

Posts: 996

Likes: 5

Quote:

Originally Posted by Habitforming

I'm totally not seeing it in chef's pic, lol Is it the mkiv ('93-98) supra pcv that we use?

you can't see it .. You literally stuff the whole thing in the tube that's coming off the valve cover

Oct 1, 2015 | 05:07 PM

#12

Habitforming

Thread Starter

Joined: Apr 2003

Posts: 3,244

Likes: 4

From: Northern KY

Quote:

Originally Posted by chefs2000

Quote:

Originally Posted by Habitforming

I'm totally not seeing it in chef's pic, lol Is it the mkiv ('93-98) supra pcv that we use?

you can't see it .. You literally stuff the whole thing in the tube that's coming off the valve cover

Ohhh, ok. Good thing you posted a pic then

Did you hollow out the oem pcv, or just leave it in tact?

Also are you using a 3rd party valve, or genuine Toyota?

Oct 1, 2015 | 05:08 PM

#13

Habitforming

Thread Starter

Joined: Apr 2003

Posts: 3,244

Likes: 4

From: Northern KY

Quote:

Originally Posted by beechx1

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.

Have you made/bought a boost leak tester and checked all of your couplings? I can't remember your mods. If you have a lot if upgrades, your boost will be lower than a fully stock setup like mine.

Oct 1, 2015 | 05:11 PM

#14

lleron

Joined: Mar 2008

Posts: 448

Likes: 0

From: West Los Angeles

Quote:

Originally Posted by Habitforming

Quote:

Originally Posted by beechx1' timestamp='1443743116' post='23763770

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.

Basically you can pressurize the crankcase with the stock PCV. This can rob some power as well as cause things like the dipstick to pop out and potentially cause blowby. For <$20 I figured it was cheap insurance.

Oct 1, 2015 | 05:58 PM

#15

beechx1

Registered User

Joined: Aug 2009

Posts: 230

Likes: 6

From: Kansas City

Quote:

Originally Posted by Habitforming

Quote:

Originally Posted by beechx1' timestamp='1443743697' post='23763778

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.

Have you made/bought a boost leak tester and checked all of your couplings? I can't remember your mods. If you have a lot if upgrades, your boost will be lower than a fully stock setup like mine.

Yes I have made a boost leak detector. I have used it to find and fix several small leaks. My car is stock except for a TP. I also have a catch can connected to the valve cover vent. The catch can is vented to atmosphere through a small filter.

Oct 1, 2015 | 08:14 PM

#16

chefs2000

Joined: May 2010

Posts: 996

Likes: 5

Quote:

Originally Posted by Habitforming

Ohhh, ok. Good thing you posted a pic then <img src=/wink.gif' class='bbc_emoticon' alt='

' />' /> Did you hollow out the oem pcv, or just leave it in tact? Also are you using a 3rd party valve, or genuine Toyota?

Lol yea the pic helps .. ill post a close up of that tube tomorrow so maybe you can see through it lol..Left stock intact and got a supra pcv from autozone