Turbo 5.3 Rebuild or replace?
11-03-2019, 02:04 PM
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Turbo 5.3 Rebuild or replace?
Hey guys, I have a 2006 Avalanche with a 5.3 and a huron speed turbo kit. Dyno tuned, its putting 400 horse the wheel, and I'm happy with it. 30 miles after the dyno, the 4l60 went. Replaced it with an RPM level 5 and and Circle D converter and it was moving pretty good, until I did a pull uphill near my driveway , and pull in the drive, and it was like somebody poured a gallon bucket of oil on a campfire. Got the log from the AEM gauge , sent it to the tuner, and it looks like the flex fuel pump couldn't keep up and it went lean.
So, what are my options?
I am more than happy with the power, and the tranny is already rated for my power output. Don't really want to go down the road of replacing the tranny, then the rearend, etc. So do I pull the motor and slap a set of pistons in it, junkyard motor or ??? Motor has 150k now.
So, what are my options?
I am more than happy with the power, and the tranny is already rated for my power output. Don't really want to go down the road of replacing the tranny, then the rearend, etc. So do I pull the motor and slap a set of pistons in it, junkyard motor or ??? Motor has 150k now.
11-03-2019, 07:40 PM
#2
So the damage to the engine internally is kinda unknown at this point right?
New pistons and rings would be a cheap route if that is all you had to do. You could properly gap the rings while you were there.
I'd do that route first if possible. Otherwise finding another used engine is next on my list, then cheking things over on that prior to install. Lastly would be upgrading your pump to make sure that doesn't happen again.
New pistons and rings would be a cheap route if that is all you had to do. You could properly gap the rings while you were there.
I'd do that route first if possible. Otherwise finding another used engine is next on my list, then cheking things over on that prior to install. Lastly would be upgrading your pump to make sure that doesn't happen again.
11-03-2019, 07:48 PM
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So the damage to the engine internally is kinda unknown at this point right?
New pistons and rings would be a cheap route if that is all you had to do. You could properly gap the rings while you were there.
I'd do that route first if possible. Otherwise finding another used engine is next on my list, then cheking things over on that prior to install. Lastly would be upgrading your pump to make sure that doesn't happen again.
New pistons and rings would be a cheap route if that is all you had to do. You could properly gap the rings while you were there.
I'd do that route first if possible. Otherwise finding another used engine is next on my list, then cheking things over on that prior to install. Lastly would be upgrading your pump to make sure that doesn't happen again.
11-03-2019, 08:29 PM
#4
Cracked or melted a piston. Surprised 400hp did that, but poo happens.
put slugs and a better pump in it. Let it eat again. The trans and rear end aren't going to last forever. Stock power has broken both countless times before
you can save money by going .02 over, gasket set, stock bolts and leaving the bearings alone. Hack way to do it. But cheap.
put slugs and a better pump in it. Let it eat again. The trans and rear end aren't going to last forever. Stock power has broken both countless times before
you can save money by going .02 over, gasket set, stock bolts and leaving the bearings alone. Hack way to do it. But cheap.
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