Blueprint 408 - Piston Damage

[Mattax]

Not clear, but looking at his older posts, its seems like he got the car a few years ago with a 360 in it.
Regardless I think we'ld all like to see the timing and fuel map as well as some photos of the other pistons and chambers.

 

[TT5.9mag]

Not clear, but looking at his older posts, its seems like he got the car a few years ago with a 360 in it.
Regardless I think we'ld all like to see the timing and fuel map as well as some photos of the other pistons and chambers.

Now that would be useful information.

 

[85glht]

Not naming any names but somebody here needs to find a sense of humor stat!

It's a lost art. Not many have it anymore.... unfortunately

 

[TT5.9mag]

It's a lost art. Not many have it anymore.... unfortunately

What? Asperger's syndrome?

 

[85glht]

What? Asperger's syndrome?

Maybe...

 

[TT5.9mag]

Maybe...

I think it’s very likely

 

[v8dve]

Not clear, but looking at his older posts, its seems like he got the car a few years ago with a 360 in it.
Regardless I think we'ld all like to see the timing and fuel map as well as some photos of the other pistons and chambers.

Just to clarify, the 408 Blueprint engine is not in my 360 Duster avatar pic, its in another car.

We are currently pulling the engine and will have more info / pics as it progresses, but this may take a while due to various constraints.

 

[RustyRatRod]

What? Asperger's syndrome?

I have asshole syndrome.

 

[Jeff S]

A lot of us do, me included!

 

[340six]

What? Asperger's syndrome?

 

[TT5.9mag]

Bone stock cars were breaking them.

Not all pistons are equal, do as you will just be mindful others hear your advice.

My experience in they TD world is they break on bone stock applications with a stock tune.

Somehow I missed this post. I don’t need you to tell me to be mindful, I post here SO THAT OTHERS HEAR MY ADVICE and I do it mindfully. There are but a few people on this entire board that have blown up garbage as much as I have, testing, analyzing, rebuilding, and doing it all over again. I hope others hear my advice, that’s why I post it. Bone stock cars with shitty tuneups break pistons also, I agree that not all pistons are created equal, but neither are all factory ECUs and the early ones from the “turbo dodge world” (you weren’t specific but I know which era you’re speaking about) were slightly better than trash. A cold day would make those things rattle.

 

[gdonovan]

Thanks for reminding me not to post, you got it covered.

 

[fishmens67]

We were like 17 18 years old at the time and didn't know any better, I'm sure at that age that you didn't know about those things either.

At 14 I was building engines and doing body work/ painting cars, at 18 I was calling in howitzer strikes.
You must have been a late bloomer or a millennial. lol

 

[crackedback]

That's most likely detonation and the spot where those pistons like to let the ring lands go.

 

[Earlie A]

Hey @v8dve, can you tell us which cylinder?

 

[TT5.9mag]

Hey @v8dve, can you tell us which cylinder?

Thinking about distribution? That answers @MOPAROFFICIAL question about why it happens to one piston. I broke a ring land in an 8.1 (my own shitty tune up) and the other 7 were perfect. In fact I stuck a junkyard piston in it and it’s still running. That was 90,000 miles ago.

 

[TT5.9mag]

At 14 I was building engines and doing body work/ painting cars, at 18 I was calling in howitzer strikes.
You must have been a late bloomer or a millennial. lol

I didn’t know you served. Thank you for your service.

 

[Earlie A]

Thinking about distribution? That answers @MOPAROFFICIAL question about why it happens to one piston. I broke a ring land in an 8.1 (my own shitty tune up) and the other 7 were perfect. In fact I stuck a junkyard piston in it and it’s still running. That was 90,000 miles ago.

I’m wondering if it’s the intake or exhaust valve side. Like @MOPAROFFICIAL said, it doesn’t look terribly lean but the other valve relief has more deposits.

 

[Dartsun]

At 14 I was building engines and doing body work/ painting cars, at 18 I was calling in howitzer strikes.
You must have been a late bloomer or a millennial. lol

You a 13F forward observer?

 

[-Boosted-]

Not naming any names but somebody here needs to find a sense of humor stat!

He's an idiot who still can't find a car to buy. You really think he can find a sense of humor?

 

[MOPAROFFICIAL]

I’m wondering if it’s the intake or exhaust valve side. Like @MOPAROFFICIAL said, it doesn’t look terribly lean but the other valve relief has more deposits.

In my brain ... the intake manifold's at fault when it's one cylinder that lean.
Ring gap.. sometimes people don't make the Gap Square and the ring touches that it's inner or outer edge and that's all it takes. Hypereutectic Pistons don't live with detonation. All it takes is one good hard audible ping.. that clack.. and thats when you know you got to put a borescope in there and check all of your Pistons for missing pieces

 

[MOPAROFFICIAL]

Hey @v8dve, can you tell us which cylinder?

Was it no.5 I wonder...

 

[MOPAROFFICIAL]

Thinking about distribution? That answers @MOPAROFFICIAL question about why it happens to one piston. I broke a ring land in an 8.1 (my own shitty tune up) and the other 7 were perfect. In fact I stuck a junkyard piston in it and it’s still running. That was 90,000 miles ago.

It's crazy that in this day and age you can buy a brand new manifold of the latest technology, and heads that are cnc'd and/or cast and advertised as and it be this bad as to lift a ring land.. one would think a check of the plug would correct this, AKA adjust the tune

 

[fishmens67]

You a 13F forward observer?

Yes 0861, one of my many MOS over my career.

 

[MOPAROFFICIAL]

Hi All,

Hoping you expert engine guys can give us your thoughts on what might have caused this piston to break in this way.

It was a 2014 Blueprint 408 Crate engine as delivered from Summit, no mods and running a Holly Sniper. Probably done less than 10k miles since fitted.

Many thanks in advance.

View attachment 1716533502

Call United engine and get a replacement piston. When you get back together, keep an eye on that plug. Hypereutectic don't just break.. they destroy motors when the break.

This had about 2k on it.