She's dead Jim!

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lumbee1

Native American
Joined
Sep 21, 2011
Threads
74
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4,642
Location
Holly Springs, NC
16K miles after my full engine rebuild, my Cruiser blew its headgasket. It had all the classic signs slowly starting to build (spikes in temperature, rough running, slow loss of coolant) however I wanted to ignore the warning signs. Last night after dinner, the Cruiser had a very hard start. I tried to start it twice and she fired up on the 3rd try but it gave me pause and my fears were coming true. I almost instantly knew the hard starts were from a hydrolocked cylinder. I didn't know which one it was until I started driving and received P0306 on my scangauge. Uh oh. At this point I'm watching the temp on the scangauge like a hawk. 177*, 179*, 181* which is normal and it remained there. It was running pretty rough but not overheating.

I spoke too soon, 5 miles down the road 181* quickly jumped to 188*, 190*, 193*. I am able to cool it down by turning off overdrive but I still had 30 miles before I was home. I was able to maintain between 202* and 211* all the way home until 1/4 mile from the house. DOT is doing road construction in front of the neighborhood so traffic was at a complete standstill. 211* spiked to 231* before I was able to start moving again. Revving the engine and driving in 2nd gear got me down to 204* and I was able to pull it into the driveway and shut off the engine.

I popped the hood and didn't notice any fluids exiting the block and the engine didn't feel or smell overly hot. This is now the 3rd supercharged Cruiser in our club that blew it's headgasket shortly after installation of the LC Engineering Master Rebuild kit Premium Master Rebuild Kit - https://www.lceperformance.com/Premium-Master-Rebuild-Kit-p/1010080.htm

Next steps.

I've got two options here, install a new headgasket (the rest of the engine is fine) or pull the 1FZFE and trans and swap in a LS with a 6L80. I honestly loved the power of the supercharged 1FZFE both on and offroad, but what I didn't like was the fuel economy. At 12 to 13mpg on the highway, I'm stopping for gas breaks more often than I would like. I'm only a few miles from @fourtrax who helped with me with removing and installing the engine for the rebuild but his shop is tied up with his own projects.

For now, the Cruiser will remain parked until I decide what to do. It's a family heirloom and won't be sold.

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Sorry to hear it Jon.

Who built your guy's engines? Three in the club using the lcengineering kit sounds to me more like a machine shop problem rather than that kit problem. Could be either (or both) though.
 
Man, that sucks. I love my LS swap in the 40, but I don't get any better fuel mileage. 80's don't have the drag coefficient of a brick wall like a 40, but I think 15 would be a really good number unless you have some really tall gearing. The best MPG I've gotten on a tank so far is just over 13, however the SPG is way way up!

Good luck in whatever you decide.
 
Sorry to hear it Jon.

Who built your guy's engines? Three in the club using the lcengineering kit sounds to me more like a machine shop problem rather than that kit problem. Could be either (or both) though.
Mine was built by AutoMachine Shop in Fayetteville. @fourtrax last head work was done by them as well. @White Sheep used a different shop in Fayetteville. The only common factor is the supercharger and the same gasket.

I'm going to reach out to LCE to see what they say. All three builds were very low miles.
 
Damn brotha that sucks

I'd say figure out what you can afford LS swap is overall better and can be done on the cheap shopping around. Also factor not using premium in the LS so the MPG I'd actually that much better than a SC 1FZ
 
Sorry to hear it Jon.

Who built your guy's engines? Three in the club using the lcengineering kit sounds to me more like a machine shop problem rather than that kit problem. Could be either (or both) though.
3?? Woah
 
That sucks Jon. 3 of them, wow. Something is amiss for sure, those are some tall odds to have 3 like that.
In regard to the LS, you already know where I stand. Just do not cheap out, it'll have you under the hood more than driving it. You have great help real close to you as well. An LS swap will also take you farther into the future I believe as far as parts go.
 
Mine was built by AutoMachine Shop in Fayetteville. @fourtrax last head work was done by them as well. @White Sheep used a different shop in Fayetteville. The only common factor is the supercharger and the same gasket.

I'm going to reach out to LCE to see what they say. All three builds were very low miles.

They're not going to say much of anything I'd wager. What do the head gaskets look like after the symptoms you've described?

Aluminum heads can be hard to get right, and can have hidden cracks unless they're heated before checking. Maybe the guys in fayetteville don't know how to do aluminum heads anymore, lol.
 
Mine was built by AutoMachine Shop in Fayetteville. @fourtrax last head work was done by them as well. @White Sheep used a different shop in Fayetteville. The only common factor is the supercharger and the same gasket.

I'm going to reach out to LCE to see what they say. All three builds were very low miles.
Same shop did my head. My head gasket is still good. I don’t have a supercharger though.

Sucks about your 80 man. Especially when I know you have been putting lots of time and money on it
 
Hate to read this Jon…..

On the bright side better to lose an engine than a truck ;)

Not sure whats at play. Put a 154k on mine with just a OE gasket at time of blower install at 179k on mine and didn't really see a difference from boosted to non boosted regarding mpg.

#4. Alexs truck was running oem parts though
 
Have you pulled your spark plugs #5/#6. any signs of pre-detonation or heat damage? I used a Mr T. head gasket, i did have the enricher module and extra injector setup on dipity to keep the AFR around 12 under boost (keep it a little leaner/cooler).
 
Sorry to hear this. I have White Sheeps 80 now and have been having the debate of a new motor or LS Swap. Downside is the amount of time involved in an LS swap. Did you have the smaller pulley on the blower? I was wondering if it may be the kit y'all used as well.
 
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Sorry to hear this. I have White Sheeps 80 now and have been having the debate of a new motor or LS Swap. Downside is the amount of time involved in an LS swap. Did you have the smaller pulley on the blower? I was wondering if it may be the kit y'all used as well.
Nope. Factory pulley but as @fourtrax pointed out, I was not monitoring AFR. I read numerous posts of folks with SC and no AFR gauge. @White Sheep did have an AFR gauge in his Cruiser.
 
Same shop did my head. My head gasket is still good. I don’t have a supercharger though.

Sucks about your 80 man. Especially when I know you have been putting lots of time and money on it
Which gasket did you use?

Yeah tons of time and money in it but it can and will be fixed.
 
Hate to read this Jon…..

On the bright side better to lose an engine than a truck ;)

Not sure whats at play. Put a 154k on mine with just a OE gasket at time of blower install at 179k on mine and didn't really see a difference from boosted to non boosted regarding mpg.

#4. Alexs truck was running oem parts though
I've only recently started tracking MPG with the SC after installing the @Lutz Auto speedo correction. I know that it started running rough 2 months ago. (water in the cylinder at startup) so my full economy could be down because of that.
 
Nope. Factory pulley but as @fourtrax pointed out, I was not monitoring AFR. I read numerous posts of folks with SC and no AFR gauge. @White Sheep did have an AFR gauge in his Cruiser.
I did have an AFR. It usually stayed in the green. I was also using a smaller pulley when I added the intercooler. Looking back, I should of put on the ceramic head gasket, but I didn't know any better back then and they are expensive.
 
I did have an AFR. It usually stayed in the green. I was also using a smaller pulley when I added the intercooler. Looking back, I should of put on the ceramic head gasket, but I didn't know any better back then and they are expensive.
OE, Cometic, or Ceramic? Not sure ATM.

The LCEngineering kit doesn't list a thickness and Cometic offers 13 thicknesses and 1 MLX

Toyota has a new gasket that supersedes the original gasket (11115-66020)
GASKET, CYLINDER HEAD
Genuine Toyota (1111566031)

I know Eric spent a ton of time looking for the perfect combination of LS 6.0L and 6L80.
 
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I can tell you this Jon, My favorite truck to date was a 6.0L with a Tremec 5 speed manual. (Engage enabler mode)
What a blast to drive and the control over the RPMs was killer with that trans. I have driven 5.3L with Toyota 5 speed and not even close, nor is an NV4500 with a 6.0L

When I was shopping for a used motor/ motor trans combo one place I always checked were insurance sales. They are pretty precise on what condition the running gear is in and are accustomed to guys wanting to pull the drive lines for swaps.
 

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