Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com
 
sjm autoprod
Go Back   Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com > Engine | Drivetrain | Powertrain Technical Discussions > Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons


Reply
 
Thread Tools
Old 03-01-2013, 12:38 AM   #1
SPCBA


 
Drives: pleather and Chiclets
Join Date: Mar 2012
Location: a line somwhere
Posts: 4,207
oil cap breather and rear main seal issues

so the consensus is that a oil breather cap with the holes plugged was insufficient and i blew my rear main seal after 2 hard days on a road course. is anyone running 2 catch cans? one for dirty side one for clean.

thinking about buying another catch can or getting the 1le seperator from gm
__________________
SPCBA is offline   Reply With Quote
Old 03-01-2013, 07:01 AM   #2
litle88
V8 Lounge member #2
 
litle88's Avatar
 
Drives: 2001 Ws6
Join Date: Sep 2009
Location: Burbank,IL
Posts: 6,337
WTF!!!
Sorry to hear that bud, what are your mods again?
__________________
2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.
litle88 is offline   Reply With Quote
Old 03-01-2013, 08:06 AM   #3
litle88
V8 Lounge member #2
 
litle88's Avatar
 
Drives: 2001 Ws6
Join Date: Sep 2009
Location: Burbank,IL
Posts: 6,337
Sorry just saw your other thread.

On my 4th gen's stroker I use the rx oil cap breather and I run a catch can from the Ls2/3 valley cover nipple and instead of plugging it to the intake I run a small breather I got from autozone and I plugged the nipple on the intake manifold and ive never had a problem and i beat my stuff!! Ill post up a pic in a few if you want.
__________________
2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.
litle88 is offline   Reply With Quote
Old 03-01-2013, 09:42 AM   #4
SC2150
Account Suspended
 
Drives: 2012 Camaro RS, RX supercharged
Join Date: Dec 2009
Location: Bradenton, FL
Posts: 6,069
Add the 1LE cleanside oil trap and see.
SC2150 is offline   Reply With Quote
Old 03-01-2013, 11:15 AM   #5
SPCBA


 
Drives: pleather and Chiclets
Join Date: Mar 2012
Location: a line somwhere
Posts: 4,207
Quote:
Originally Posted by litle88 View Post
Sorry just saw your other thread.

On my 4th gen's stroker I use the rx oil cap breather and I run a catch can from the Ls2/3 valley cover nipple and instead of plugging it to the intake I run a small breather I got from autozone and I plugged the nipple on the intake manifold and ive never had a problem and i beat my stuff!! Ill post up a pic in a few if you want.
could you post the picks, i am curious. it happened after two days at fontanas road course...i pushed it as hard as my car could go with simple bolt ons with everything else stock. i have since upgraded cam and heads and tune. seal is replaced and good to go so no worries about that...i only wish it was something that failed that i could upgrade hahaha

at fontanas roval i also discovered that i need a better oil cooler...looking at getting one from a zo6 or zr1 retro fitted on my camaro i think.
__________________
SPCBA is offline   Reply With Quote
Old 03-01-2013, 11:16 AM   #6
SPCBA


 
Drives: pleather and Chiclets
Join Date: Mar 2012
Location: a line somwhere
Posts: 4,207
Quote:
Originally Posted by SC2150 View Post
Add the 1LE cleanside oil trap and see.
guess it depends on the price, if its comparable i will use another catch can from a trusted third party i already have the dirty side tackled and it works great!
__________________
SPCBA is offline   Reply With Quote
Old 03-01-2013, 11:22 AM   #7
litle88
V8 Lounge member #2
 
litle88's Avatar
 
Drives: 2001 Ws6
Join Date: Sep 2009
Location: Burbank,IL
Posts: 6,337
Hope this help bud.

This is how it looks...


Here you can see the rx valve cover/oil cap breather.
The hose from the valley cover to the CC.
The nipple that's plugged on the intake manifold behind the throttle cable (black)
The passenger valve cover is plugged.
In essence I eliminated the PCV.
__________________
2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.
litle88 is offline   Reply With Quote
Old 03-01-2013, 11:25 AM   #8
litle88
V8 Lounge member #2
 
litle88's Avatar
 
Drives: 2001 Ws6
Join Date: Sep 2009
Location: Burbank,IL
Posts: 6,337
Also some have complained about oil in the engine bay but mine has been dry! Never had an oil residue issue EVER, and I'm a near freak when it comes to engine compartments lol.
__________________
2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.
litle88 is offline   Reply With Quote
Old 03-01-2013, 11:38 AM   #9
SPCBA


 
Drives: pleather and Chiclets
Join Date: Mar 2012
Location: a line somwhere
Posts: 4,207
great pics...explains it perfectly...you 4th gen guys have already figured out a lot of the tricks for us. appreciate the photos.
__________________
SPCBA is offline   Reply With Quote
Old 03-01-2013, 11:48 AM   #10
litle88
V8 Lounge member #2
 
litle88's Avatar
 
Drives: 2001 Ws6
Join Date: Sep 2009
Location: Burbank,IL
Posts: 6,337
Lol just trying to share the wealth bud. I know the routing is a Lil different but you get the idea.
Congrats on your cam results! I'm learning from you 5th gen vvt guys lol
__________________
2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.
litle88 is offline   Reply With Quote
Old 03-01-2013, 12:15 PM   #11
90503


 
Drives: 2011 2SS/RS LS3
Join Date: Nov 2011
Location: Torrance
Posts: 11,943
Not sure if it's applicable, or would help with this particular issue, but saw tips/photos a while back about enlarging the hole in the driver's side valve cover....
90503 is offline   Reply With Quote
Old 03-01-2013, 12:51 PM   #12
litle88
V8 Lounge member #2
 
litle88's Avatar
 
Drives: 2001 Ws6
Join Date: Sep 2009
Location: Burbank,IL
Posts: 6,337
No need really, with the valley and passenger side vc with breathers crankcase pressures should be ok.
__________________
2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.
litle88 is offline   Reply With Quote
Old 03-01-2013, 01:01 PM   #13
90503


 
Drives: 2011 2SS/RS LS3
Join Date: Nov 2011
Location: Torrance
Posts: 11,943
Only other time I heard of a rear main seal going out was from the catch-can hoses being connected incorrectly (backwards)...just sayin'...
90503 is offline   Reply With Quote
Old 03-01-2013, 01:24 PM   #14
SC2150
Account Suspended
 
Drives: 2012 Camaro RS, RX supercharged
Join Date: Dec 2009
Location: Bradenton, FL
Posts: 6,069
Venting the can defeats all crankcase evacuation. The only reason you build up pressure is the fixed orfice is to restrictive and if using the breather there is no place for the pressure to go if you build excess as it has a oneway checkvalve in it to be emmissions compliant.

Here is the thread explaining the mod.
http://www.camaro5.com/forums/showthread.php?t=239961

If you just vent, then you leave all damaging combustion byproducts in the crankcase. They need to be evacuated while still in a suspended state or each cool cycle after shutdown they condense into the oil and that results in shortened engine life.

SC2150 is offline   Reply With Quote
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 09:39 AM.


Powered by vBulletin® Version 3.8.9 Beta 4
Copyright ©2000 - 2016, vBulletin Solutions, Inc.