zl1 rear main seal leaks? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

pumpkinrancho · 02-04-2015, 10:52 AM

Yes I did a search for this topic and found none. Have any of you had this issue. Mine is currently at the dealer to have this replaced as mine failed at just under 15k miles. Super charger while its there as well. Thanks in advance.

Rat · 02-04-2015, 11:09 AM

Quote:

Originally Posted by pumpkinrancho

Yes I did a search for this topic and found none. Have any of you had this issue. Mine is currently at the dealer to have this replaced as mine failed at just under 15k miles. Super charger while its there as well. Thanks in advance.

What dealer is doing the work for you?

KaBoom1701 · 02-04-2015, 11:12 AM

Catch can will help relieve the crankcase pressure and give you the added benefit of not letting the blow-by oil be recirculated back into your engine and causing carbon built up on your cylinder heads.

97ChameleonTA · 02-04-2015, 12:25 PM

Quote:

Originally Posted by KaBoom1701

Catch can will help relieve the crankcase pressure and give you the added benefit of not letting the blow-by oil be recirculated back into your engine and causing carbon built up on your cylinder heads.

Please help me understand something. I've seen this stated a few times lately and I am having trouble grasping how a catch can placed inline on the PCV port helps relieve pressure. Isn't the catch can a sealed piece? If not, wouldn't that result in a vacuum leak? Are we talking about the same port (bottom of snout to valley pan)?

ZO6 Bryan · 02-04-2015, 12:32 PM

Quote:

Originally Posted by 97ChameleonTA

Please help me understand something. I've seen this stated a few times lately and I am having trouble grasping how a catch can placed inline on the PCV port helps relieve pressure. Isn't the catch can a sealed piece? If not, wouldn't that result in a vacuum leak? Are we talking about the same port (bottom of snout to valley pan)?

You're right. The catch cans everyone has been using are sealed and don't vent anything. That said, you could get a catch can with a breather filter on it to vent to atomosphere.

pumpkinrancho · 02-04-2015, 03:36 PM

Quote:

Originally Posted by Rat

What dealer is doing the work for you?

tyrells chevy here in Cheyenne since its under warranty still. Not my first choice, however with the amount it was puking I could not get it to my first choice.

pumpkinrancho · 02-04-2015, 03:38 PM

I have a rx performance catch can, that however is not what I was asking about here. Am I the only one that has had this happen??? I know I race my car a lot, however so do a lot of people.

jessrayo · 02-04-2015, 05:09 PM

I blew a rear seal drag racing. I have gone through a few options in crankcase ventilation since then. Tried some different filters on the valve covers but the pressure was getting so high, oil was actually blowing through the filter into the engine bay. I now have a couple of large custom catch cans.

This attached post is really about a rear seal issue.
http://www.camaro5.com/forums/showthread.php?t=394071

I don't think that many have had the problem on the ZL1. I have had my limiter at 7000 rpm from time to time and think that contributed to mine going. It never hurts to have more good ventilation.

CAM....ZL1 · 02-04-2015, 05:26 PM

Quote:

Originally Posted by pumpkinrancho

Yes I did a search for this topic and found none. Have any of you had this issue. Mine is currently at the dealer to have this replaced as mine failed at just under 15k miles. Super charger while its there as well. Thanks in advance.

How did you know your seal was leaking? Was it leaving that much oil on the floor?

Smittty · 02-04-2015, 05:48 PM

Quote:

Originally Posted by pumpkinrancho

I have a rx performance catch can, that however is not what I was asking about here. Am I the only one that has had this happen??? I know I race my car a lot, however so do a lot of people.

I had a RX can on my car and was having a problem with crankcase preasure and blowing seals. I went with a new setup and can. Now I am very happy with my new setup

CAM....ZL1 · 02-04-2015, 06:18 PM

Quote:

Originally Posted by Smittty

I had a RX can on my car and was having a problem with crankcase preasure and blowing seals. I went with a new setup and can. Now I am very happy with my new setup

What set up are you using

JamesZL1 · 02-04-2015, 08:43 PM

I am currently having this issue, posted about it in another thread. I called Tyler at JDP motorsports today and bought their E2 catch can. You can actually order it with an option that runs another line to your CAI to vent crankcase pressure, so it has 1 inlet and 2 outlets....I just ordered the stock setup. I wasn't understanding his directions on the install for the other setup. Anyways, that is an option there as well as the MightyMouse catch can that has the filter on top. I just don't like to looks of it.

Holliss69 · 02-04-2015, 10:29 PM

SO I am anticipating a similar issue ... Run mine HARD ... No can currently, like the idea of the filtered CC but, heard some not so nice reviews on the Mighty Mouse.

On another note ... wouldn't a can releasing additional ("bad") air into CAI (throttle body) negatively affect performance, or is the amount so minimal it makes mo difference?

ZO6 Bryan · 02-04-2015, 11:50 PM

The PCV hose that goes to the can used to have a PCV valve in it in the older LS engines. Now there is a restrictor built into the tube coming from the lifter valley cover. So this is not the tube or hose you want to use to vent excess pressure. That restrictor is only going to let so much out. The ports at the valve covers is where you would vent excess pressure if you're running a whole lot of boost.

02-04-2015, 10:52 AM	#1
pumpkinrancho COMPULSIVE CAMARO OWNER Drives: 18 ZLE,14 2ssrs,96,73 RS LT,69&67 Join Date: Nov 2009 Location: SE. WYO & Northern CO, W NEB Posts: 1,238 View My Garage	zl1 rear main seal leaks? Yes I did a search for this topic and found none. Have any of you had this issue. Mine is currently at the dealer to have this replaced as mine failed at just under 15k miles. Super charger while its there as well. Thanks in advance. __________________

02-04-2015, 11:12 AM	#3
KaBoom1701 KaBoom1701 Drives: 13' ZL1 Red M6 Join Date: Dec 2012 Location: I.E. SoCal (Yucaipa) Posts: 8,630	Catch can will help relieve the crankcase pressure and give you the added benefit of not letting the blow-by oil be recirculated back into your engine and causing carbon built up on your cylinder heads. __________________ Mods: Roto-Fab Intake, WW Res. kit & Big Gulp Air Scoop, Elite Catch Can, ATI Super Damper & 18% OD Pulley, LF Idler pulley bracket, Metco CC breather, ID850 Injectors, Stainless Power Headers w/ ceramic coating, TR71X Spark Plugs, JMS Fuel Pump Booster, Bo White TB, Tuned by Ted @ Jannetty Racing, Ron Davis HX, D3 Reservoir, Pfadt 1" Springs, Moreno Camber Plates, ZL1 Addons Splitter guard washers, Tow Hook kit & rock guards, Hurst Shifter Billet Plus 6 Speed Short Shifter, ZL1 DRL lighting harness, ZL1 Recaro Seats.

02-04-2015, 03:38 PM	#7
pumpkinrancho COMPULSIVE CAMARO OWNER Drives: 18 ZLE,14 2ssrs,96,73 RS LT,69&67 Join Date: Nov 2009 Location: SE. WYO & Northern CO, W NEB Posts: 1,238 View My Garage	I have a rx performance catch can, that however is not what I was asking about here. Am I the only one that has had this happen??? I know I race my car a lot, however so do a lot of people. __________________

02-04-2015, 05:09 PM	#8
jessrayo Speed Freak Drives: 2013 ZL1 Camaro, 2016 Camaro SS Join Date: Jun 2013 Location: Ardmore, OK Posts: 2,637 View My Garage	I blew a rear seal drag racing. I have gone through a few options in crankcase ventilation since then. Tried some different filters on the valve covers but the pressure was getting so high, oil was actually blowing through the filter into the engine bay. I now have a couple of large custom catch cans. This attached post is really about a rear seal issue. http://www.camaro5.com/forums/showthread.php?t=394071 I don't think that many have had the problem on the ZL1. I have had my limiter at 7000 rpm from time to time and think that contributed to mine going. It never hurts to have more good ventilation. __________________ 2016 SS -AGP twin Borg Warner 7163 EFR's, LT4 mechanical pump, LT4 injectors, Walbro 255 low side, Castrol SRF. 734whp/759 tq 2013 ZL1 -ADM - 427 LSX 6 bolt, O-ringed block built by LME. Twin PT6466 turbos. RPM custom manual trans, RPS Quad carbon clutch, 9" Hendrix rear diff & axles. ADM/squash fuel system, Ron Davis radiator, Spal fans, AGP air to air, turbo plumbing. LPE oil cooler, rear bushing upgrade, roll bar...etc. rwhp 1400+... 212.5mph, best Texas mile to date.

02-04-2015, 08:43 PM	#12
JamesZL1 Drives: 2013 ZL1 A6 Camaro, 2015 C7 A6 Z51 Join Date: Apr 2014 Location: Oklahoma Posts: 396	I am currently having this issue, posted about it in another thread. I called Tyler at JDP motorsports today and bought their E2 catch can. You can actually order it with an option that runs another line to your CAI to vent crankcase pressure, so it has 1 inlet and 2 outlets....I just ordered the stock setup. I wasn't understanding his directions on the install for the other setup. Anyways, that is an option there as well as the MightyMouse catch can that has the filter on top. I just don't like to looks of it. __________________ Roto-Fab CAI, Texas Speed Headers, Texas Speed X-Pipe, Texas Speed LS3-B Blower Cam, Metco 9.10" Crank Pulley, Metco 2.5 Upper Pulley, ID 850 Injectors, LPE Ported Throttle Body, Alky Control Methanol kit, E2 Catch Can, 610HP / 608 Torque.

02-04-2015, 10:29 PM	#13
Holliss69 Drives: 2013 ZL1 Coupe A6 Join Date: Nov 2014 Location: Arizona/NY Posts: 108 View My Garage	SO I am anticipating a similar issue ... Run mine HARD ... No can currently, like the idea of the filtered CC but, heard some not so nice reviews on the Mighty Mouse. On another note ... wouldn't a can releasing additional ("bad") air into CAI (throttle body) negatively affect performance, or is the amount so minimal it makes mo difference?

02-04-2015, 11:50 PM	#14
ZO6 Bryan Drives: 02 Z06, 95 Trans Am, 2012 ZL1 Join Date: Mar 2012 Location: Southeast Posts: 1,838 View My Garage	The PCV hose that goes to the can used to have a PCV valve in it in the older LS engines. Now there is a restrictor built into the tube coming from the lifter valley cover. So this is not the tube or hose you want to use to vent excess pressure. That restrictor is only going to let so much out. The ports at the valve covers is where you would vent excess pressure if you're running a whole lot of boost. __________________ Bryan 2018 ZL1 M6