Not again.....

[Andy B.]

 

[monkeyswrench]

Looks expensive

 

[Andy B.]

Anyone herad of these guys?

 

[Andy B.]

Looks expensive

Yep need a new Long block not remanufactured, any help is appreciated.
Andy

 

[DarkHorseRacing]

That sucks!

 

[HNL2LHC]

Best of luck getting things up and running soon.

 

[Andy B.]

Best of luck getting things up and running soon.

Thanks!

 

[Cray Paper]

Is debris in the lifter valley from the cam? I see a missing valve but the debris in the valley seems to be the predecessor to the flange of the valve departing the stem.

 

[HNL2LHC]

Is debris in the lifter valley from the cam? I see a missing valve but the debris in the valley seems to be the predecessor to the flange of the valve departing the stem.

The volume looks to be quite a bit more. I was wondering where that came from? Maybe the rocker arm assembly.

EDIT looking at it again it is in the lifter valley. What is that material?

 

[brgrcru]

Andy call some reputable engine builders
That maybe have something sitting in there shop that might meet your needs . That is built already ?

You never know ?

 

[JFMFG]

I’d start at so cal speed and marine maybe they can source a motor for you or build one? Those guys kick ass. @ham&cheese

 

[mjc]

Sleeve it and run it.

 

[DRYHEAT]

Is debris in the lifter valley from the cam? I see a missing valve but the debris in the valley seems to be the predecessor to the flange of the valve departing the stem.

The volume looks to be quite a bit more. I was wondering where that came from? Maybe the rocker arm assembly.

EDIT looking at it again it is in the lifter valley. What is that material?

I’m thinking that’s part of where some of the missing piston went.

 

[DRYHEAT]

GM Marine Big Block Compatible 540 c.i. Pro Series Engine - 670 Horsepower - Base Dressed - Carbureted

BluePrint Engines 540 c.i. big block GM style pro series stroker marine crate engine - dressed longblock with carburetor. Includes 12 month parts & labor warranty & BPE Dyno Promise. Part #: PSM5400CTC1

blueprintengines.com

Maybe an option?

 

[gqchris]

In hunting for a motor also and know the pain

 

[monkeyswrench]

Maybe I'm missing something, but how did that much aluminum end up in the valley? When I've blown chunks, I've had reversion, where the first cylinder migrated into the plenum, and met other pistons. Aside from that, the pan turned into stripper glitter, and small particular in the heads and valley, but nothing that big.

 

[DRYHEAT]

In hunting for a motor also and know the pain

Must be something in the air.

 

[DRYHEAT]

Maybe I'm missing something, but how did that much aluminum end up in the valley? When I've blown chunks, I've had reversion, where the first cylinder migrated into the plenum, and met other pistons. Aside from that, the pan turned into stripper glitter, and small particular in the heads and valley, but nothing that big.

Only thing I was thinking is pulverized piston pieces at higher RPM being thrown up into the cam and oil drain's.

 

[Andy B.]

Is debris in the lifter valley from the cam? I see a missing valve but the debris in the valley seems to be the predecessor to the flange of the valve departing the stem.

It's the piston head.

 

[Andy B.]

Andy call some reputable engine builders
That maybe have something sitting in there shop that might meet your needs . That is built already ?

You never know

Names of who you guys recommend I would appreciate it!!!

now

 

[Andy B.]

Only thing I was thinking is pulverized piston pieces at higher RPM being thrown up into the cam and oil drain's.

Yep!

 

[Andy B.]

The block is cracked unusable....
I want something that will last the original 502 went 800 hrs no problems.

 

[Andy B.]

The volume looks to be quite a bit more. I was wondering where that came from? Maybe the rocker arm assembly.

EDIT looking at it again it is in the lifter valley. What is that material?

Cylinder head

 

[Andy B.]

GM Marine Big Block Compatible 540 c.i. Pro Series Engine - 670 Horsepower - Base Dressed - Carbureted

BluePrint Engines 540 c.i. big block GM style pro series stroker marine crate engine - dressed longblock with carburetor. Includes 12 month parts & labor warranty & BPE Dyno Promise. Part #: PSM5400CTC1

blueprintengines.com

Maybe an option?

Thanks but too much horsepower for my bravo one I'm done chasing horsepower just want something that will last and has decent power.

 

[4Waters]

Thanks but too much horsepower for my bravo one I'm done chasing horsepower just want something that will last and has decent power.

500hp BBC is light work and reliable

 

[Andy B.]

500hp BBC is light work and reliable

That would work I'd like to stay at 15k or under though.....

 

[DRYHEAT]

Thanks but too much horsepower for my bravo one I'm done chasing horsepower just want something that will last and has decent power.

Yep, seems like they’re missing part of the market that could be good for them, I would’ve thought they had something similar to a MerCruiser replacement, but that was the smallest marine big block they had.

 

[Eliminator21vdrive]

Maybe I'm missing something, but how did that much aluminum end up in the valley? When I've blown chunks, I've had reversion, where the first cylinder migrated into the plenum, and met other pistons. Aside from that, the pan turned into stripper glitter, and small particular in the heads and valley, but nothing that big.

My guess is some of it blew into intake then fell out during dis ass

 

[Nordie]

That sucks dude!

 

[Runs2rch]

That would work I'd like to stay at 15k or under though.....

1 800runsnew.com (Marine Engines Inc)

They have the 502 435hp long block for 9100 plus freight.

 

[Andy B.]

1 800runsnew.com (Marine Engines Inc)

They have the 502 435hp long block for 9100 plus freight.

No shit cool thanks I will check them out. Do you know anyone that has one?

 

[n2otoofast4u]

In hunting for a motor also and know the pain

Did I miss something? Sold Crownline and bought another and the motor puked?

 

[Runs2rch]

No shit cool thanks I will check them out. Do you know anyone that has one?

Check out OSO. Good reviews there.

 

[Andy B.]

Check out OSO. Good reviews there.

Ok don't laugh but what does 0S0 stand for?

 

[welldigger00]

Boy oh boy do I know your pain. Two seasons in a row for me with a dead boat out of the gate. I chose the wrong builder to refresh my engine. Right during Covid too. This precipitated buying my Hallett. I now know that you must have two boats.

 

[Kachina26]

Ok don't laugh but what does 0S0 stand for?

offshoreonly.com The other boating site.

 

[gqchris]

Did I miss something? Sold Crownline and bought another and the motor puked?

Yup. Im holding details on it for a bit to cool off.

 

[HST4ME]

Seems to be a thing.

 

[Cray Paper]

It's the piston head.

HTF did that wind up in the lifter valley??

 

[Cray Paper]

Seems to be a thing. View attachment 1502956

Pre Ignition detonation or Peroni's Rod disease?

 

[Andy B.]

Check out OSO. Good reviews there.

HTF did that wind up in the lifter valley??

That's the piston head and part of the valve , lost power coming in motor shut off. White smoke when lifting hatch tried to start no oil pressure so I stopped, motor had oil in it but saw oil in bilge....

 

[HST4ME]

Peroni's Rod disease

Water doesn't compress

 

[DRYHEAT]

Pre Ignition detonation or Peroni's Rod disease?

That missing exhaust valve might have a little something to do with it.

 

[DRYHEAT]

That's the piston head and part of the valve , lost power coming in motor shut off. White smoke when lifting hatch tried to start no oil pressure so I stopped, motor had oil in it but saw oil in bilge....

How many hours were on that engine? Curious if new valves were put in those heads or just reconditioned.

 

[rivermobster]

 

[Cray Paper]

That missing exhaust valve might have a little something to do with it.

That’s a lot of debris that would have had to push through port in the head then some how get through the head to intake mating point. NFW all that metal wound up there from the bottom end unless the lifter valley of the block windowed. I highly doubt the rotating assembly would have tossed that amount of debris through a window in the lifter valley. Just seems odd to me.

 

[DRYHEAT]

That’s a lot of debris that would have had to push through port in the head then some how get through the head to intake mating point. NFW all that metal wound up there from the bottom end unless the lifter valley of the block windowed. I highly doubt the rotating assembly would have tossed that amount of debris through a window in the lifter valley. Just seems odd to me.

Here’s my comment from post 18, I made an observation from some limited pictures that we’re looking at if you have a better idea have at it. I just offered my opinion.

Only thing I was thinking is pulverized piston pieces at higher RPM being thrown up into the cam and oil drain's.

I’ve always found it amazing what mechanical devices can do to themselves during catastrophic failures.

 

[wzuber]

Seems to be a thing. View attachment 1502956

That's a nice custom curve in that rod. Is that the new h.p. secret? Reduces some of the thrust side drag? Haha
What a ...drag.

 

[Andy B.]

How many hours were on that engine? Curious if new valves were put in those heads or just reconditioned.

Maybe 40-60 the heads were completely redone and new valves, springs, roller rockers,custom pistons etc.

 

[Andy B.]

That’s a lot of debris that would have had to push through port in the head then some how get through the head to intake mating point. NFW all that metal wound up there from the bottom end unless the lifter valley of the block windowed. I highly doubt the rotating assembly would have tossed that amount of debris through a window in the lifter valley. Just seems odd to me.

I'm going to find out next week when it's completely disassembled and I will update thread.