Bearings are bearings.
Valves aren't damaged by horsepower.

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If I ever saw a built engine turn 100k, is send mine there, no questions asked.
the ones I see last a "while" before needing freshening up. Others have problems.
I'll stay OEM and reliable, even if it means less power.

 

It typically means a lot less money too

 

i would think the tuner has a lot more influence on the life of an engine than the builder. the owner sits between those two in that influence.
i used to build sbc and bbc stuff for airboats and the owners are terrible, no builder can prevent a failure from abuse or negligence.

 

The reason I was thinking 1000 hp bottom end is to limit damage as I start building. Isn't the biggest damage caused by broken rods? And is there any 1000 hp pistons with enough valve clearance for broken timing belt?

 

I've read a few had spun bearings. How does that happen? All I can think of is one cylinder making too much power over the others and putting the crankshaft off balance. I just thought of an invention

 

spun bearings is usually an oil supply problem.
any piston will make 1000hp the same as a bad tune can hurt any piston at 200hp.

youre asking all the wrong questions for someone wanting to build a 1000hp 4g63.

 

The pistons I have are rated for 1200hp I think.

I got them because they were 22g lighter per piston than forged pistons. Not for the hp rating.

People may have different opinions. Sure, you can over-build your engine if that's what you're asking.

I just think if you actually put a turbo on the car that makes 1000whp, you're gonna want more cylinders. That's what I would do anyways...

But if you have a tuner and engine builder you trust, ask them.

 

A good parts selection and an experienced engine builder can help with longevity, but the fact is that most all failures can be traced to the items that I previously mentioned. And because of this, its hard to gauge the inherent lifetime of the actual parts themselves.

 

non-forged pistons rated for 1200hp?

 

They're billet aluminum, yo

 

Interesting...

I'm just thinking out loud about over building bottom end. I want to be proactive in hopes to minimize the damage when things go wrong. Thinking is, if I will eventually need these parts, I shouldn't wait until engine blows to install them, especially if it can save parts of my motor. When rods go and blows a hole in the block, I think this is the worst case. It's just preventative maintenance I'm thinking about.

Truth is, if my engine goes and it costs $10k to fix, I'm not sure how long it will sit or be sold. I love my car but money will always be the limiting factor.

 

right? I got an entire shortblock, no core, from Mitsu for about $3,300. Not to mention all the money I saved having to upgrade everything else on the car to support big power.

Building a 1,000hp-capable engine to run 500hp, to be safe, isn't exactly how it works. It doesn't really help anything. You would be wasting money, IMO. Torque breaks rods, so you are limited by tq.
Our engines are interference motors. A broken timing belt will almost always do damage.
Have you researched Evos/4g63s at all? Any experience or are you just learning?

Bearings spin when they are contaminated or have low oil supply. One cylinder making more power than the others? Out of curiosity, where are you getting your information?

Agreed.

If you are realistically (not wishing) you will need something stronger than OEM, then building makes sense. If $10k is out of your budget, then wait until you try building an engine and taking advantage of it. You will be spending a lot more than that.

 

I was thinking if it can handle 1000 hp (which should be 700-800 tq?), when cylinder runs lean, I'm hoping rods hold. Logs should show lean condition so I can check it out without a window in my block.

Haven't dug into our engines yet. Learning now

Sounds like I should just put aside $5k for another stock motor. Guess I'll do some digging for anyone who upgraded rods and pistons to see if it helped with anything.

 

billet pistons are cut from forgings. all aftermarket pistons are forged.