TRD/ Magnuson 4.0 Supercharger Tips, Tricks, and Mods

I feel like this is the first engine I've seen discoloration on. I could be wrong, but I could say for sure that I didn't see it much if at all up to this point. Did your truck overheat at all? Bad head gasket? It is possible that coolant was leaking into the combustion chamber perhaps, but I'm spitballing possibilities here.

Regardless of what happened, until I know the full story, I don't really have an opinion one way or another in saying whether or not you should proceed with the repairs.

 

@Gilmorec61 I want to say I had some discoloration on my cylinders to. Not as bad as yours but my engine has 170k miles.

 

Definitely the first time I've encountered this, but I'm also not an engine builder.

No overheating, no loss of coolant or oil.

Truck ran like a top really, prior to tearing down. With the exception of the misfire of course. It had gotten worse, mainly when starting cold. Under acceleration it didn't misfire. No smoke coming from exhaust.

Thanks for sharing those pics - looks similar, mine just looks a bit more localized. Def appreciate the input so far yall

 

I'm color deficient in my eyes but pretty sure mine had a greenish hue. The cross hatching looked similar to rheath. I heard our blocks have a coating from the factory. Maybe someone more knowledgeable can confirm? Yours looks like it may need to be further inspected. Discoloration could mean fuel bypassing the combustion, washing out the oil.

By the way your cylinder head combustion chamber looks alot more wet than I'm used to. Probably the bum HG.

 

There is no coating. They have a spiny type captured liner. THEY CAN BE BORED OUT!!!!!!!!
I am having mine bored to .020" over. I was told by LC Engineering that they can go .040" over. They recommend a good competent machine shop though. I will post pics at I get my block back Tuesday.

 

Rad! Looking forward to it. Do you have a build list going somewhere? I hope to build a spare motor and bump compression with some flatter top pistons lol. If it weren't for stupid CARB, this dang thing would have been turbo already. But as everyone considers, LS would probably be much easier to get power.

 

Very possible. Hoping someone here may have experienced this and may be able to chime in on it

Yup, I noticed that as well. I didn’t have any issues with my head gasket itself, just the misfire due to the leaking exhaust valve. I believe the additional wetness in comparison to yours is the rich tune I’ve been running

 

How rich we talking here at WOT exactly?

 

I couldn’t remember exactly so I did some digging… found this video of me pulling the trailer up an incline looks like the AFR gauge is sitting right at 11

 

so guys all this motor talk has gave me a bug. running motor out of an 07 with 280k on it and a failing hg. 200.00
good buy or good bye??
just wanted a rebuildable core in case i can build one or part it out here if someone needed something.
feedback appreciated.

 

Id buy it and make a table out of it in the worst case scenario

 

Oh shoot. That's pretty darn rich. I run mine at 12.0. sometimes I see it drop to 11.8 but that's about as low as it goes these days.

What he said ^^

 

If it's a whole long block, that's a heck of a deal. Even if you had a mom and pop machine shop replace everything and you assemble it. You could make money if you decided not to keep it. If it's pieces already, I would skip the headache though

 

good point. my understanding is its complete. with a video of it running the day prior to removal.
anyone have an idea on the weight? trying to think how to transport and unload it.....by myself.

 

if u have a trailer and a engine hoist its easy to transport. its how i got mine. also, mine weighed about 400lbs shipped from Florida to here. it was everything minus the accessories and flywheel.

 

nope and nope on those. maybe my neighbor with a tractor can help. what mileage was your replacement?

 

79k miles is what was advertised. my old one is sitting at around 68k miles

 

thats low.

 

yep. wasnt as cheap as the one you trying to get

 

2500?