For the 4.8L faithful . . .

I don't know tuna55 . .

1. Build a turbo 4.8L = check
2. Owner tuned = check
3. Beat on it for 40K miles while building more and more boost = check
4. Tows boat and DD duties = check
5. 10.17@134.26 in a full size truck = check
6. Boost and spray to 900+ whp = check
7. Motor throws a rod after several dyno sessions and street hoonage @ said 900 hp.

That sounds like a success to me . . .

Well, it is a success unless it's a GM. Then it's just a pile of E36 M3 that should have been thrown in the trash because nothing that comes from them is good. Ever.

^^^

Bobzilla wrote: those articles make my pants uncomfortably tight.

You must already have really tight pants......

I think people who think things just magically let go at XXX hp after X amount of time dont understand how engines work.

What exactly is the wear part here? Do you think his rods were bending JUST A LITTLE BIT every time he hit full boost? Or his rods/bolts were fatiguing from stretch load even though he was only running ~6500 rpm? Or that his pistons were somehow continually minutely deforming at that power level?

Realistically, unless there is tensile loads and metal fatigue involved, if the engine can do it once, it can generally do it for along time. Almost ALL high-hp bottom end failures come down to ANYTHING BUT the pistons/rods/crank causing the problem.

Realistically, if you tune anything to the hairy edge, you open yourself up to random environmental factors blowing up your engine. You tuned it on a 96 degree day and its 104? Boom. You tuned it to the hairy edge on e85 and filled up with what turns out is closer to e81? Boom. Etc etc forever.

It almost always comes down to some aspect of fueling or heat management causing detonation. Almost always.

Strike_Zero wrote: I don't know tuna55 . . 1. Build a turbo 4.8L = check 2. Owner tuned = check 3. Beat on it for 40K miles while building more and more boost = check 4. Tows boat and DD duties = check 5. 10.17@134.26 in a full size truck = check That sounds like a success to me . . .

MASSIVE SUCCESS!!!

Strike_Zero wrote: 6. Boost and spray to 900+ whp = check 7. Motor throws a rod after several dyno sessions and street hoonage @ said 900 hp.

FAILURE

Gasoline wrote:

I love this one. I want one. In a Seven.

Just food for thought... there's a certain 4 cylinder Honda motor that's known to take over 700whp on stock internals as well.

So can a 2JZ and 1UZ. I don't think 700hp on stock internals is that unusual, especially for a modern v8. I could see it would be a challenge on a 1.8 BP.

2JZ and 1UZ handle 1200hp on stock internals?

For as long as the Hot Rod motor did with the same strengthening mods they did, yeah. Not uncommon. And we get into the definition of "handling" 1200whp. "Handling" to me doesn't mean lasting a couple pulls on the dyno.

I'm impressed with how long the 900whp motor lasted though. E36 M3 is cool.