It's Alive again!

[Cougar281]

Well, just got done with my Re-Swap. Original LLY shortblock with all LBZ parts from the heads on up and a Dymond Eye downpipe. I'd say it's quieter and maybe even a little smoother than it was before. I didn't take the time to check the valve lash before I took the LBZ apart, but I set the lash to .010 when I put everything togehter and I'd say it's less "tickey". Only glitch was a fuel leak from the top of the CP3 that had fuel running down the back of the motor. Don't know why though; took the pipe from the CP3 to the rail off, checked the fitting, mad sure the CP3's fitting was tight, put it all back together, and no leak. Been dry ever since. :dontknow:

Now for the painfully slow build of my LBZ shortblock as funding permits :rofl:.

 

[ChevyDieselLLY]

very cool!! why not just build the lly or did i miss something in another thread

 

[Cougar281]

I converted the truck to LBZ and want to use the LBZ block for my build.

 

[TheBac]

How was the electrical swap without going to a 6spd trans? How'd you work an egr delete, or did you leave it on?

 

[Cougar281]

How was the electrical swap without going to a 6spd trans? How'd you work an egr delete, or did you leave it on?

I have the 6-speed too... Got the shifter, cluster, everything an 06 would have. If you where to jump in my truck, you'd think it WAS an 06 except for the Onstar @ XM antennas (and the color, if you knew that GM didn't offer that color after the 05MY). As for the electrical swap, it was almost plug & play. There where a few wires I had to move around, had to add the wires for the tap-shift, but the total add/change/ count was soemthing like 6 wires; with the APP swap, except for the C100 connector (which was where all the adds/changes where), the connectors where all PnP.

EGR is GONE. My friend and I made a EGR delete pipe like the ones Rick sells for the LLY's so I could use my LLY CAC and piping.

Anyway, Might have an issue. When I got on it for the first time tonight (at which point I had put about 90 gentle miles on it, barely exceeding 2000RPM, and one full heat cycle and several partals), it blew a rather large amount of some kind of smoke. I couldn't tell what color though becasue it was dark out and I could only see it in the headlights of the cars behind me. When I got home almost 10 minutes later, I felt the upper hose and it was soft, as in I could squeeze it with two fingers (incidentally, this leads me to believe I did have a HG problem with my LLY as the hose got much harder than that, but oddly, was soft when it cooled off). The tune I'm running shouldn't be smoking... It wasn't before. It's a ~40hp tune with no fuel added, just timing changes. I'll find out tomorrow what color it is if it continues to do it.

Or could the higher compression ratio than the LBZ tuning is "expecting" cause some kind of issue?

 

[Cougar281]

Well, I couldn't get it to make more than a haze this morning, and I think I have a boost leak somewhere, but I can't find it... As soon as the turbo starts spooling up, I hear a "wooshing" sound, like when I forgot to tighten the boot between the PS CAC tube and intake, and it'll only build like 15-20psi with my foot in it. I'll have to look it over closer tonight and see if I can find the leak.

 

[ChevyDieselLLY]

Oh ok that makes sence. Hope you get everything figured out.

 

[Cougar281]

Well, turns out my "Boost Leak" was actually a "vacuum leak"; In looking for a boost leak, I found that the turbo inlet was way loose... Guess I didn't tighten it enough . I still need to get the EGR delet pipe sorted out though. We cut the pipe off the bracket and re-aligned everything while the motor was on the stand, but the brace is flexing enough to allow the albow to push out of the bridge.