LQ4 105k????
02-27-2012, 01:52 PM
#1
LQ4 105k???? Well here we go........Pulled the heads off the 105k 2004 denali lq4 and this looks like ****. and that oil in there is tranny fluid WTF??? Why? It has a 90 day warranty so i'll just bring it back and get another if this is shot. It spins freely no problem at all. But this looks like hell to me anyways....
02-27-2012, 02:23 PM
#2
TECH Enthusiast
Did it have an intake manifold on it when you got it? I'd think possibly someone sat a torque convertor on top of it and some fluid ran down in the intake port on the head. From the pictures, that looks about how I would expect for a 105k mile pull out? The carbon is normal, clean it out with a rag with brake parts cleaner on it, so you can see the condition of the cylinder wall. I don't see any rust in the photos, or anything else abnormal? I've only pulled a few of these apart in my life and not really an expert, but yours looks similar to what I have seen, except for the trans fluid. Have a local shop take a look at it if your in doubt? I think what you have, may be a diamond in the rough, that carbon can make things look bad.
02-27-2012, 02:35 PM
#3
Did it have an intake manifold on it when you got it? I'd think possibly someone sat a torque convertor on top of it and some fluid ran down in the intake port on the head. From the pictures, that looks about how I would expect for a 105k mile pull out? The carbon is normal, clean it out with a rag with brake parts cleaner on it, so you can see the condition of the cylinder wall. I don't see any rust in the photos, or anything else abnormal? I've only pulled a few of these apart in my life and not really an expert, but yours looks similar to what I have seen, except for the trans fluid. Have a local shop take a look at it if your in doubt? I think what you have, may be a diamond in the rough, that carbon can make things look bad.
02-27-2012, 02:45 PM
#4
I've seen people drain the oil out of w motor that is going to sit and put tranny fluid in it...even fill it all the way to the top of the valvecovers....high detergent and prevents rust? Not sure hoe it would work on rubber/plastic parts though
Take the rear cover off and pull the barbell out....see if it has any hunk built up on it.
Believe it or not I've seen engines with a lot more buildup than yours that once cleaned up turned out to be really nice
Take the rear cover off and pull the barbell out....see if it has any hunk built up on it.
Believe it or not I've seen engines with a lot more buildup than yours that once cleaned up turned out to be really nice
02-27-2012, 03:03 PM
#6
I've seen people drain the oil out of w motor that is going to sit and put tranny fluid in it...even fill it all the way to the top of the valvecovers....high detergent and prevents rust? Not sure hoe it would work on rubber/plastic parts though
Take the rear cover off and pull the barbell out....see if it has any hunk built up on it.
Believe it or not I've seen engines with a lot more buildup than yours that once cleaned up turned out to be really nice
Take the rear cover off and pull the barbell out....see if it has any hunk built up on it.
Believe it or not I've seen engines with a lot more buildup than yours that once cleaned up turned out to be really nice
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02-29-2012, 07:28 PM
#10
Ya man you were right i didnt think it would even come close to this clean haha i used engine degreaser and some wire brushes but was careful and let it soak a while.. 
Thanks you i'm not going to rebuild it i'm just going to do the upper. Cam, springs, pushrods, and do arp rod bolts and head bolts.
Thanks you i'm not going to rebuild it i'm just going to do the upper. Cam, springs, pushrods, and do arp rod bolts and head bolts.
03-02-2012, 08:02 AM
#11
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I don't mean to jack the thread, but my lq4 looked just like that. I got it cleaned up and one cylinder has one little discoloration place in the wall. About an inch long. You can't feel anything, only see it. Everything else is perfect. Should that be anything to worry about?
03-02-2012, 08:11 AM
#13
I don't mean to jack the thread, but my lq4 looked just like that. I got it cleaned up and one cylinder has one little discoloration place in the wall. About an inch long. You can't feel anything, only see it. Everything else is perfect. Should that be anything to worry about?
03-02-2012, 08:56 AM
#14
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About the best I could get on my way out the door this morning. It set up for a few months, rotating assemply spins great. I cleaned some debris out from the clean up and soaked the cylinders in WD40 to prevent rusting while waiting on parts. WD40 emptied out of this cylinder in about 8 hours with it about half full. It's not scored or anything. Smooth to the touch.
03-02-2012, 12:46 PM
#17
From here it looks more like stains in the cylinder....if you feel the need you could drop the crank and pistons and run a hone down through it real quick, but I don't think you need to
