Confirmed; Another One Bites the Dust
Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
Whats important for oiling is opening up the 4 drain back ports in the valley and the 4 drain back ports in the cyl heads.
Will
Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
Thanks for the advice. I do intend on better oil pump, higher grade bearings, and Canton RR Pan even though this car is mainly street. I only used it a few times due to my other car being down.
And I am going to mention the forementioned grinding to open up the passage. One would think since the LTx motors were designed to produce power in he higher Ron's they would have considered cavatation and oil starvation.
Thanks for the condolences on the second blown motor.
And, just saying and may just be coincidence; my L98 lasted longer than my LT4 before failure.
And I am going to mention the forementioned grinding to open up the passage. One would think since the LTx motors were designed to produce power in he higher Ron's they would have considered cavatation and oil starvation.
Thanks for the condolences on the second blown motor.
And, just saying and may just be coincidence; my L98 lasted longer than my LT4 before failure.
As far as what GM designed into the LTX oiling system over everything else... same simple stuff they have used in "high perf" sbc for many yrs.... 3/4" oil pump pick up tube and a main cap mounted "Z28" windage tray.
Will
Thread Starter
Max G’s
Joined: Nov 2008
Posts: 2,751
Likes: 79
From: Monroe OH
NCM Sinkhole Donor
I will check out the Champ and Moroso. Mainly went with Canton because a lot of other guys I know run the Canton. I may try a different one for this car. Even though it is not a dedicated track car it will see some action from time to time.
Safety Car
Joined: Feb 2000
Posts: 4,564
Likes: 110
From: Austin Texas
While I agree with everything Will said about oiling systems, I disagree about his stance on an AccuSump.
A properly engineered and massaged oiling system SHOULD be fine...but I view the AccuSump as cheap insurance. After spending north of $5k TWICE in a year on engine work...a $300 AccuSump is well worth it.
I took a cue from one of our longtime members in how to use it for startups...he has a manual valve on a cable. He opens it as he cranks it over and floods the bearings with oil to extend the life of the engine. The electronic solenoid makes it much easier...but it is certainly another item that COULD fail.
Of course...finding a place to put an AccuSump in a C4 engine bay is another matter entirely!
I wish there was room for a dry-sump system...but finding a place to put the sump in a C4 is close to impossible on the L98 block. Everything is packaged pretty tightly...
A properly engineered and massaged oiling system SHOULD be fine...but I view the AccuSump as cheap insurance. After spending north of $5k TWICE in a year on engine work...a $300 AccuSump is well worth it.
I took a cue from one of our longtime members in how to use it for startups...he has a manual valve on a cable. He opens it as he cranks it over and floods the bearings with oil to extend the life of the engine. The electronic solenoid makes it much easier...but it is certainly another item that COULD fail.
Of course...finding a place to put an AccuSump in a C4 engine bay is another matter entirely!
I wish there was room for a dry-sump system...but finding a place to put the sump in a C4 is close to impossible on the L98 block. Everything is packaged pretty tightly...
Last edited by 1991Z07; Nov 9, 2013 at 11:27 AM.
Thread Starter
Max G’s
Joined: Nov 2008
Posts: 2,751
Likes: 79
From: Monroe OH
NCM Sinkhole Donor
I have been told that one location to use is the area where the spare tire is normally mounted. But, I question if that is too far away and couldn't get the oil back to the sump quick enough to maintain oiling to the bearings? I do think it is a good upgrade and may install one myself.
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Safety Car
Joined: Feb 2000
Posts: 4,564
Likes: 110
From: Austin Texas
I have been told that one location to use is the area where the spare tire is normally mounted. But, I question if that is too far away and couldn't get the oil back to the sump quick enough to maintain oiling to the bearings? I do think it is a good upgrade and may install one myself.
You can mount it to the cross-beam in front of the engine (where the accumulator is mounted). You have to fab some bracketry...and it has to come out when doing anything around the front of the motor, but it's doable.
Burning Brakes
Joined: May 2010
Posts: 900
Likes: 3
From: Cary illinois
I am . Also a stock pump , not a high volume . Im thinking some 5K PLUS rpm with a high volume pump is why some guys are having problems . My motor never sees 5K
All that oil gets pumped to the top half .
Just did a trackday ,Autoban Full course on slicks 160 k On the clock .
with no issues . extra half qt.
All that oil gets pumped to the top half .
Just did a trackday ,Autoban Full course on slicks 160 k On the clock .
with no issues . extra half qt.
Thread Starter
Max G’s
Joined: Nov 2008
Posts: 2,751
Likes: 79
From: Monroe OH
NCM Sinkhole Donor
I will take a look at that location and see what kind of room I have. My car sits pretty low also, so want to make sure have enough clearance.
Thread Starter
Max G’s
Joined: Nov 2008
Posts: 2,751
Likes: 79
From: Monroe OH
NCM Sinkhole Donor
I have never added extra oil above the full mark but if you do make sure you secure your PCV valve and the ventilation valve on passenger side. I have had the PCV valve come out in a turn and oil go all over and caused me to spin out. When you hit oil, there is no control, you just have to wait for the ride to end. Does give you a bit of a rush as long as you don't hit anything. 
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
I'd have thought so too based on what I learned in auto school. But my C6 came with instructions in the owners manual to add an extra qt for track days, auto x, etc. I know the C4 has a different engine but I think I recall hearing the same procedure for it too. I think. Anyway, I've followed that practice for my track days too, with no issues.
Safety Car
Joined: Feb 2000
Posts: 4,564
Likes: 110
From: Austin Texas
If you put it in front...you'll have to find another location for the accumulator.