Narxoleptic

holy crap man! Listen, Car gods, we need an intervention for this guy!! Geez, he needs to catch a break! Keep going man, this truck is going to be a blast to drive!!

Cyrperformance

iTrader: (1)

Thanks, have a lead on a 6.0 core for $200 and I think that is the way I'm going to go. Maybe throw a set of GEN4 rods and some forged pistons if the bottom end is bad.

3pedals

iTrader: (3)

First, figure out why it ate the pistons.
What fuel, what boost level, and timing?

Cyrperformance

iTrader: (1)

93 octane, 6psi, 18 degrees max in the table. Log didn't show knock retard or spike in boost.

3pedals

iTrader: (3)

What did the O2 logs say?

Cyrperformance

iTrader: (1)

12.0 at 105kpa ish down to 11.2,3 around 138kpa. Haven't figured out how to switch to true psi in the datalog. Haven't spent enough time in the Tunerstudio settings

3pedals

iTrader: (3)

Do you have a log of the actual event of it burning down? I question fuel suply, since so many burnt up on you. 18 degrees should be fine at 6psi. And 11.3 should be good as well.

Cyrperformance

iTrader: (1)

AFR table

This is how my table is set which I would think is somewhat conservative.

Cyrperformance

iTrader: (1)

I don't have a log from that because I was literally going around the block with the new trans controller just to see if it was shifting the trans. I am going to add a fuel pressure sensor in and most likely change to a returnless rail and add a boost reference regulator. It has a 450 Walbro pump in the tank and 3/8" supply and 5/16" return so I wouldn't imagine it starving but maybe something restricting the filter. I have literally stuck the throttle to the floorboard a handful of times and only had the trans problems. This was a pretty mellow 1/2 throttle cruise when it shut down. I am pretty sure this was letting go for a bit now, explaining the PCV problem I was having. I think they went one by one and that is what caused the turbo problems that were occurring just prior to it shutting down. I did pull the plugs and those four were smashed closed but didn't have any pit marks that were obvious so I threw an old set in and it fired right up. I never did see chunks of metal in the turbines on either turbo which gave me hope that it was maybe just backpressure causing the PCV issue but now that its apart all hope is gone unless I get a set of GEN4 rods and pistons.

3pedals

iTrader: (3)

It has got to be fuel delivery, and I agree it could have been happening over a period of time

Cyrperformance

iTrader: (1)

Well I may just drop the coin and do a fuel cell and run -8 feed and -6 return and run a second pump with -8 to a regulator and bigger rails. It all depends on my mood when I go to see this 6.0 tomorrow. I have another running 5.3 which is a thought to get it in and running while I build the 6.0 but we will see tomorrow. Really appreciate the help and suggestion of fuel supply. I may take it apart tomorrow to see if the filter is nasty or something with the regulator.

3 window

iTrader: (1)

Fuel issue still having an AFR of 11.3? I'd think if he was having volume/pressure problems it'd show leaner than that. I could be wrong. Those fact that it took out so many pistons with everything showing normal has me baffled! How about IATs?

Cyrperformance

iTrader: (1)

IAT typically stayed around 105 after driving for a couple miles the few times I took it out, highest was 120 at the end of a WOT run but showed good AFR at the time.

Cyrperformance

iTrader: (1)

The Escalade has seen 130 IAT and the tune adjusts for it and knock on wood no problems, I do plan to run an intercooler or two air to water ones soon.

3 window

iTrader: (1)

Maybe lean spikes every time you got on it and it beat the ring lands up?!

Cyrperformance

iTrader: (1)

Went through a couple of the first logs with only around 115kpa while running the auto tune and didn't see anything jump out after it dialed the VE table. One good log of WOT did show a quick 12.0 where it was commanding 11.3 but not sure if it was fuel or table error.

Cyrperformance

iTrader: (1)

Bringing home the 6.0!

Cyrperformance

iTrader: (1)

Really! I mean come on people!!








Both sides are done!!





Oh yeah, let's make sure we trashed the 317 heads too!!





Other head as well!!

Bad Apache

Looks like they ran a hand full of BB's threw it. I'd take that back and shove it straight up someone's ***. And charge them $100 for the wasting my time. You just can't catch a break on this thing, I admire your perseverance.

Cyrperformance

iTrader: (1)

Block is stripped down and at least the crank didn't have an angle grinder run across it! Hope was to get the block cleaned and checked then honed and reassemble somewhat on the cheap for now. Looks like it will get all that and some new parts. Definition of cheap: less then someone else spends! Haha





I have gone through quit a few broken motors but have yet to come across one where the cam bearing actually walked out of the bore!