Rebuilt LT4
Thread Starter
Instructor
Joined: Nov 2000
Posts: 171
Likes: 0
From: Huntsville, AL
Rebuilt LT4
Had my LT4 refreshed (Rings, Bearings), but during the initial drive I expected some smoke while the rings seat. Now I'm getting alittle worried about the oil consumption. I'm going to take it out day and see how it does, how long on average (Rings to seat) take.
Thanks,
DJ
Thanks,
DJ
Drifting
Joined: Oct 2005
Posts: 1,918
Likes: 51
From: Angier nc
If you had cylinder wear before the new rings you will still use oil.The ring cannot repair a worn cylinder.
A light hone for the new rings would have been ideal.
No synthetic oil for a break in period.The rings should seat quickly.Proper break in is not cruising at the same rpm.It needs to vary.
A light hone for the new rings would have been ideal.
No synthetic oil for a break in period.The rings should seat quickly.Proper break in is not cruising at the same rpm.It needs to vary.
Thread Starter
Instructor
Joined: Nov 2000
Posts: 171
Likes: 0
From: Huntsville, AL
Fellas,
Thanks for the replies. Here is the ring set I used:
Seal Power ZEK-530K
Bore (in) 4.000 in.
Bore (mm) 101.600mm
Top Ring Included Yes
Top Ring Thickness 2.0mm
Second Ring Included Yes
Second Ring Thickness 1.5mm
Oil Ring Included Yes
Oil Ring Thickness 4.0mm
Oil Ring Tension Standard
I used Rotella oil for the initial breakin. Went out for a drive after work, smoking very bad. Just tried put alittle heat in the motor to see if that would help. Heat cycled the motor (230) afew times. I'm kinda out of ideals right now.
Thanks,
DJ
Thanks for the replies. Here is the ring set I used:
Seal Power ZEK-530K
Bore (in) 4.000 in.
Bore (mm) 101.600mm
Top Ring Included Yes
Top Ring Thickness 2.0mm
Second Ring Included Yes
Second Ring Thickness 1.5mm
Oil Ring Included Yes
Oil Ring Thickness 4.0mm
Oil Ring Tension Standard
I used Rotella oil for the initial breakin. Went out for a drive after work, smoking very bad. Just tried put alittle heat in the motor to see if that would help. Heat cycled the motor (230) afew times. I'm kinda out of ideals right now.
Thanks,
DJ
Melting Slicks
Joined: Jan 2009
Posts: 3,482
Likes: 196
From: folsom california
valve seals?
some members have reported major oil burning issues that were ultimatey traced to intake manifold gaskets.
have you driven it far enough to get an idea as to what the actual oil consumption, miles per quart, is ?
some members have reported major oil burning issues that were ultimatey traced to intake manifold gaskets.
have you driven it far enough to get an idea as to what the actual oil consumption, miles per quart, is ?
Safety Car
Joined: Sep 2000
Posts: 3,524
Likes: 4
From: Hinckley Ohio
Fellas,
Thanks for the replies. Here is the ring set I used:
Seal Power ZEK-530K
Bore (in) 4.000 in.
Bore (mm) 101.600mm
Top Ring Included Yes
Top Ring Thickness 2.0mm
Second Ring Included Yes
Second Ring Thickness 1.5mm
Oil Ring Included Yes
Oil Ring Thickness 4.0mm
Oil Ring Tension Standard
I used Rotella oil for the initial breakin. Went out for a drive after work, smoking very bad. Just tried put alittle heat in the motor to see if that would help. Heat cycled the motor (230) afew times. I'm kinda out of ideals right now.
Thanks,
DJ
Thanks for the replies. Here is the ring set I used:
Seal Power ZEK-530K
Bore (in) 4.000 in.
Bore (mm) 101.600mm
Top Ring Included Yes
Top Ring Thickness 2.0mm
Second Ring Included Yes
Second Ring Thickness 1.5mm
Oil Ring Included Yes
Oil Ring Thickness 4.0mm
Oil Ring Tension Standard
I used Rotella oil for the initial breakin. Went out for a drive after work, smoking very bad. Just tried put alittle heat in the motor to see if that would help. Heat cycled the motor (230) afew times. I'm kinda out of ideals right now.
Thanks,
DJ
Melting Slicks
Joined: Feb 2009
Posts: 2,072
Likes: 1
From: Oklahoma City OK
St. Jude '10
I'm in the process of building a 383 LT1. I am not an expert at all. I was advised to not baby the engine during break in. In fact I was told to let er rip. The theory behind this (what I was told) is that the sudden compression forces the rings to expand and seat. Like I said, I'm no expert just passing on what I've heard. I did read some posts that said the same thing also. Just wondering if anyone else has come accross this theory.
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Thread Starter
Instructor
Joined: Nov 2000
Posts: 171
Likes: 0
From: Huntsville, AL
After trying the heat cycle ideal, took the GS out for a run. No change, just trying to gather DATA now. Going out to see what the consumption is. Any ideas before I going back in??
Thanks,
DJ
Thanks,
DJ
Melting Slicks
Joined: Jan 2009
Posts: 3,482
Likes: 196
From: folsom california
LT4's differ from LT1's in that the LT4's have raised intake ports. Any LT1 intake manifold gasket will bolt up, but only an LT4 specific gasket will seal correctly.
I got mine from summit; (factory GM LT4 intake gasket) NAL-12367777, two required.
double check that there wasn't a mix up in your rebuild.
Is your engine is indeed using an extreme amount of oil ?
I would not expect a huge amount of oil to be working its way past a correctly installed new ring pack....some small nuisance amount maybe...but not a lot.
I got mine from summit; (factory GM LT4 intake gasket) NAL-12367777, two required.
double check that there wasn't a mix up in your rebuild.
Is your engine is indeed using an extreme amount of oil ?
I would not expect a huge amount of oil to be working its way past a correctly installed new ring pack....some small nuisance amount maybe...but not a lot.
Melting Slicks
Joined: Jun 2004
Posts: 3,253
Likes: 2
From: Castro Valley CA
I'm in the process of building a 383 LT1. I am not an expert at all. I was advised to not baby the engine during break in. In fact I was told to let er rip. The theory behind this (what I was told) is that the sudden compression forces the rings to expand and seat. Like I said, I'm no expert just passing on what I've heard. I did read some posts that said the same thing also. Just wondering if anyone else has come accross this theory.
Thread Starter
Instructor
Joined: Nov 2000
Posts: 171
Likes: 0
From: Huntsville, AL
Fellas,
Running the 7777 intake gasket, from summit. Ran a compression check, all the cylinders read from 190-200. But, all eight plugs are covered in black soot. I associated this as a very rich issue, but what brothers me the smoke not being black, if running that rich. This is what I'm starting to feel like
Thanks,
DJ
Running the 7777 intake gasket, from summit. Ran a compression check, all the cylinders read from 190-200. But, all eight plugs are covered in black soot. I associated this as a very rich issue, but what brothers me the smoke not being black, if running that rich. This is what I'm starting to feel like
Thanks,
DJ
Thread Starter
Instructor
Joined: Nov 2000
Posts: 171
Likes: 0
From: Huntsville, AL
Going to get a data log this weekend. Before I had the car re-tuned for the new cam, I started it to check that all was good. As I viewed the video, the GS do not smoke at all. With all 8 plugs sooted up and my exhaust tips being covered in black soot plus no performance, going to check fuel data. Will keep posted. Thanks for all the input.
DJ
DJ
