High milege 5.7 tear down

[Wild one]

Hemi Engine Autopsy: 235,000-Mile 5.7L Out of a 2011 Challenger

Can a high-mileage Hemi with a history of problems be salvaged?

www.motortrend.com

 

[Burla]

LOL, tool. Engine looks petty good though, quote fom post...

A common problem is for the locking pin in an MDS lifter to not engage or disengage from the plunger, often the result of using an oil viscosity heavier than the specified 5W30 synthetic.

Way wrong answer...

 

[Wild one]

LOL, tool. Engine looks petty good though, quote fom post...

A common problem is for the locking pin in an MDS lifter to not engage or disengage from the plunger, often the result of using an oil viscosity heavier than the specified 5W30 synthetic.

Way wrong answer...

It's Motor Trend,they don't always get everything right,lol

 

[HEMIMANN]

Motortrend likes Euro mobiles anyway. Surprised they did this episode.

 

[Wild one]

Motortrend likes Euro mobiles anyway. Surprised they did this episode.

Actually it looks like it was Hotrod mag that did the tear down,and Motor Trend published it. I have a fair bit of respect for Johnny Hunkins,the author,and it looks like it was his wifes car.

 

[HEMIMANN]

Actually it looks like it was Hotrod mag that did the tear down,and Motor Trend published it. I have a fair bit of respect for Johnny Hunkins,the author,and it looks like it was his wifes car.

What did you think of this sample size of one teardown? I thought the pistons / grooves should be a bit cleaner, wonder what oil they ran? Yeah, I know it had 200,000+ miles, but it isn't a diesel, either. Wonder if they used top tier gas only?

The modern multi-laminate head gaskets do about as good a job as they can for dissimilar metal engines - at least it's not failure @ 60,000 miles like the old pure elastomer gaskets did. This might be the end of iron block / aluminum head engines anyway. Wife's and son's engines are all aluminum, they seem to be holding up ok. No leaks or cracks (yet). The stiffening webs on an aluminum block are huge.

 

[Wild one]

What did you think of this sample size of one teardown? I thought the pistons / grooves should be a bit cleaner, wonder what oil they ran? Yeah, I know it had 200,000+ miles, but it isn't a diesel, either. Wonder if they used top tier gas only?

The modern multi-laminate head gaskets do about as good a job as they can for dissimilar metal engines - at least it's not failure @ 60,000 miles like the old pure elastomer gaskets did. This might be the end of iron block / aluminum head engines anyway. Wife's and son's engines are all aluminum, they seem to be holding up ok. No leaks or cracks (yet). The stiffening webs on an aluminum block are huge.

Sounds like the car had some shoddy warrenty work done on it,in it's earlier days,especially the head surfaces.

 

[kayjo]

I noted they mentioned the engine had some minor ticking. However, the lifters were good at 235k. makes you wonder. I keep thinking all this ticking is not necessarily all this end of world stuff. There is an awful lot of 200k plus trucks out there on their original lifters. Makes you think what is going on with some of these trucks eating cams at 60k and under.