Longshot at Assessment and Reason for Damage?

[rapidride2]

Hello,

I have a shot at buying this engine. Price is right, although it is hurt. Owner seemed to have gone through a street outlaw phase, had this engine rebuilt and dynoed. 3 to 4 passes out there is one cylinder that has spring cup damage. Brodix pb 1201 maneater heads. Engine was shut off very quickly after noticing a miss. (Don't see where this would cause a miss) engine is not locked up. Spring is not broken and keeper is still in place.

I realize this is a Longshot and This engine is out of state. Any ideas as to what and why?

Thanks

[rapidride2]

What a good cup in the pocket looks like on all others.

[Tom68]

Any other symptoms ?
Did they just find it doing maintenance ?

[rapidride2]

Any other symptoms ?
Did they just find it doing maintenance ?

After 3 to 4 passes he felt the engine nose over and it had a light miss. He did say be shut it off and out of dusgust hasn't really looked at it since. In fact the car Is still inside his trailer.

[Tom68]

Any other symptoms ?
Did they just find it doing maintenance ?

After 3 to 4 passes he felt the engine nose over and it had a light miss. He did say be shut it off and out of dusgust hasn't really looked at it since. In fact the car Is still inside his trailer.

Hmmm, damaged valve then, hopefully not a damaged bore.

[Tuner]

It looks like the two pics of the 'damage' are taken to obscure the broken spring and the picture of the good one is clearly an intact spring, but why are the other two pictures not taken from the same side view angle, instead of the top down? I think the spring is broken but need better pictures to be sure.

[HQM383]

Agree with Tuner. Coil circled in red looks broken from circle in green. Adds up to symptoms

[mt-engines]

Im just shocked that those heads were assembled with painted springs..

probably broken valve spring caused some carnage.. if you can get a deal on the engine, go for it. Anything can be fixed. Its pretty expensive to build a 12 degree deal new these days. So even after its fixed you'll be ahead.

[turbo camino]

Coils in the middle of the spring sure look a lot closer together than the rest of them.

[rapidride2]

The gentleman who owns the engine bought it from the original owner who had similar issues. That original owner had it repaired and dynoed, then sold to current owner who made just a few passes and had a similar issue. Sorry its so hard to read. This described work was done BEFORE engine had its latest issue.

Man this thing is priced under $10k but I'm thinking it could be an expensive riddle to figure out. He is going to try and get me better pics of the springs.

[mag2555]

That’s the flat wire damper of the spring unwinding itself it looks like to me.

This will cause all sorts of damage.

Also rust pitting especially on valve springs like I see in some of those photos is a sure fire way to give a crack a place to start!

On a crazy but related side note, my friend and I last summer where sitting outside his restaurant at a table and his Mercedes was parked in the street just about right next to us.

All of a sudden we hear a loud bang like a shot gun and the drivers side front of the car is then sitting nearly on the ground.

Our first thought was that his front tire just blew out, but as we are walking over to his car he says I just got new tires 2 days ago.

We get around to that side of the car and the tire is fine, turns out the spring on that side busted just sitting there!

He gets the car towed to the car dealer and the service agent then tells him we have been having a lot of this year car bust front springs just due to a change in the steel make up and then rust pitting causing a crack to start.

Food for thought here, no?

Decades ago I had a flat wire damper unwind itself on me at 7300 rpm and the end result was a valve pulling thru it’s keeper and the dropped valve took out the whole motor.

From that day on I have never used a valve spring that had a flat wire damper on its make up!

I much sooner gladly spend the extra bucks on a true duel or triple spring set up.

[rapidride2]

I saw the rust in the springs. The car has been sitting for 3 years in his trailer. Manley springs as noted in parts description.

He's gonna try to get clearer pics of notes spring.

[bob460]

Im just shocked that those heads were assembled with painted springs..

probably broken valve spring caused some carnage.. if you can get a deal on the engine, go for it. Anything can be fixed. Its pretty expensive to build a 12 degree deal new these days. So even after its fixed you'll be ahead.

MT what's the issue with painted springs?, Manley nextek still do it too this day. Had my white paint nextek over 10 years.

[rapidride2]

This was the cylinder with bad spring taken with a borescope. No carnage. Car has been sitting for 2 to 3 years. Helps out with assessing my gamble.

Image_202.jpg

[prairiehotrodder]

looks like a good deal on a serious engine. I would want to know if the block has ever had a sleeve installed from a previous injury. If the block is good everything else can be fixed fairly easily i would say.