Team ZR-1 Corvette Racers
Custom Tuning
>Enter Here
Test and Tune
Common Information
WEC Season Starts Feb 28th
by teamzr1. 03/01/24 10:42 AM
Cheaters in IMSA Rolex 24
by teamzr1. 02/24/24 04:37 PM
Corvettes go Wild and cops cannot catch them
by teamzr1. 02/24/24 07:01 AM
How Corvettes Gen 6,7 and 8 Place at VIR
by teamzr1. 02/22/24 07:15 PM
94 year old guy and a Corvette Sports Car
by teamzr1. 02/22/24 11:48 AM
Hig Speed C7 Crash
by teamzr1. 02/20/24 09:45 AM
Carvana Sells a Stolen Corvette
by teamzr1. 02/19/24 03:39 PM
Gang Banger Steals whole tractor load of C8s
by teamzr1. 02/16/24 06:53 PM
Corvette GT3.R reliability issues
by teamzr1. 02/01/24 08:40 PM
Newer Corvettes
2021 C8 DCT TSB N212350930
by teamzr1. 02/10/24 08:13 AM
2024 C8 Invoice Numbers
by teamzr1. 02/09/24 08:31 AM
Recall C8 Headlight Problem
by teamzr1. 02/08/24 12:14 PM
Tech Talk
Forum Statistics
Forums27
Topics3,409
Posts6,107
Members50
Most Online265
Jan 21st, 2023
Previous Thread
Next Thread
Print Thread
Rate This Thread
#792 - 07/16/01 07:59 PM Oil Sucking Pig  
Joined: Dec 2000
Posts: 5,240
teamzr1 Offline
Owner - Pays the bills
teamzr1  Offline
Owner - Pays the bills
Lives in Engine Bay

Joined: Dec 2000
Posts: 5,240
America
If you have been tracking the C5 issues, one is the LS1 eating oil.
Some have to put a quart in for every 1,000 miles or less.

One of the claimed issues is the PVCs lay horizontal and when PVC is open,
it causes oil to back up into the intake manifold and burn that oil causing
lots of carbon buildup in engine causing more knock.

So the claim is if the PVCs were vertical the problem would go bye bye.

Here is the next Rebel project I just finished.
http://teamzr1.com/pvcinstall.html

It has images of my install process.

In short inline to the PVC that gets tied to intake is now two filters and horizontal is
a drain tank so that oil no longer can get into the intake.

See if you buy the thought process and you think it's going to work ?

I'll begin testing to find the real answers . . .


Team ZR-1
True Custom Performance Tuning
Teamzr1.com
Team ZR-1 Store
Enter Here
#793 - 07/17/01 04:09 PM Re: Oil Sucking Pig  
Joined: Dec 2000
Posts: 5,240
teamzr1 Offline
Owner - Pays the bills
teamzr1  Offline
Owner - Pays the bills
Lives in Engine Bay

Joined: Dec 2000
Posts: 5,240
America
I installed the PVC modified kit and the results of 5 runs grouped together as to knocks is no better then before the kit.

If you think about it, the little filters in the kit would be full in no time if in fact lots of oil was being sucked through valve cover into the intake.

In swapping the LS1 to LS6 intake manifold, I looked closely in the intake and yes there was signs of oil but very little.

Thus it goes with the finding when I did the re-carb that the engine was not very dirty.

In looking at the PCM traces I see knocks all over the RPM and speed range, in fact knocks as low as 7 MPH and as low as 1,200 RPMs.

Now if I read the knock design details correctly, knock is not suppose to respond if less then 1,650 RPMs and less then 20 MPH. If that is so then I should not seen knocks in the traces below that value, but I do.
I have a hard time thinking a LS1 would knock at only 7 MPH but mine does or this proves all along that it is either ill designed knock sensors/circuit or they are way too easy in pointing a finger as a real knock.

[Linked Image]

In this graph, with 59 knocks, only thing I could see common is no ping if less then LTFT of cell #9.

So now what do we do, teflon the sensor threads ?


Team ZR-1
True Custom Performance Tuning
Teamzr1.com
#794 - 12/11/01 07:24 AM Re: Oil Sucking Pig  

**DONOTDELETE**
Unregistered
Anonymous
Unregistered


A similar thing was occuring on my C4 where the knock sensor was overally picking up knocks. What we did was replace it with a LT4! version and then with the hooker headers and exhaust it ran with no knocks.

George


Moderated by  teamzr1 

Who's Online Now
0 registered members (), 14 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
What's New
Cheaters in IMSA Rolex 24
by teamzr1. 02/24/24 04:37 PM
Corvettes go Wild and cops cannot catch them
by teamzr1. 02/24/24 07:01 AM
How Corvettes Gen 6,7 and 8 Place at VIR
by teamzr1. 02/22/24 03:32 PM
2024 E-Ray Results at VIR
by teamzr1. 02/22/24 03:28 PM
94 year old guy and a Corvette Sports Car
by teamzr1. 02/22/24 11:48 AM
Hig Speed C7 Crash
by teamzr1. 02/20/24 09:45 AM
Carvana Sells a Stolen Corvette
by teamzr1. 02/19/24 03:39 PM
Popular Topics(Views)
Techie
2021 C8 DCT TSB N212350930
by teamzr1. 02/10/24 08:13 AM
2024 C8 Invoice Numbers
by teamzr1. 02/09/24 08:31 AM
Recall C8 Headlight Problem
by teamzr1. 02/08/24 12:14 PM
Powered by UBB.threads™ PHP Forum Software 7.6.0