348 Engine blew 367 days after last major...

This continues to be the all-time most useless thread in this forum's history. I am ashamed to admit I sometimes read OP's updates even though there's zero chance they will contain anything informative.

 

As far as I know he is simply pending the shop to get to the work, its queued up apparently.
Dan, myself and mr308gtb pulled my engine last weekend. If you have a used one and want to swap it in I'm sure we can help.

 

Engine still blown up 576 days after last major.

 

Lol

 

Any update? I pass classic coach on the train every day and wonder.

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Valves hit pistons in one cylinder and they told you you needed a new engine which they then rebuilt?

 

Axa.. as posted to you last year, your car in the shop same time as my major- rosso 97 355. I recall your service was basic maintenance like an oil change and not any acutal engine work. So even if you don’t believe you over-revved the engine, you cannot lay any blame on techs for your event. Unless they put sand, what happened to you right after you drove from the shop can’t be blamed on the service. Bad luck really. Happens to all of us at one point. I had a wonderful service experience ar Classic. Meticulous work all captured in photos.

 

If valves hit one piston from an over rev you need to contact the people at the Guinness Book of World Records.

 

Crank being damaged from a valve strike is another Guinness Book event.

 

Stripping teeth is standard failure mode. The belts very seldom "Break" but its the term used.

 

Crank journals are what 1.75 in diameter or hardened steel supported every what 4 inches? The valve stems are 3/16 diameter with a taper down on top of that. They bend just a hair then are clear. Not sure how that could affect the crank, harder material always wins. Maybe but not seeing it really. Long road but glad its getting sorted regardless!

Waiting on my heads from Olsen Engines, been 4 months, if they sent your heads out and they probably did as its not a machine shop that's where they likely went as well. If they did not send the heads out and just did a swap-aroo I would be concerned.

 

That's good information thanks Brian.

 

I for one would want the old engine.

 

One things for sure, we'll get documentation of both the pyramids and granite boxes at Saqqara being built before finding out what actually happened here.

 

No question. The evidence is in a landfill.


I get pictures from around the country from either shops or sometimes owners showing damaged, broken, whatever parts asking for an opinion on why it failed and I am blown away how poor most are at determining why it went kablooie. Sometimes it is no doubt a case of needing a narrative that absolves one party or the other from guilt and I get that but many are just a complete lack of knowing enough to come up with a cause and effect. I saw an old V12 from a shop who asked my opinion why it ate up its lower end. I offered a couple of scenarios, none very supportive of the shop who rebuilt it. They rejected that and insisted it was the owners not adequately warming it up prior to driving it. Of course that had the virtue of absolving them of guilt but I think they really believed it.

 

Can't over rev a 348, it has a rev limiter!! Its that simple, and a very conservative rev limit it is.....

 

Down shift to wrong gear.....4th to 3rd for example. But you would sure as H know that you did that.

 

Indeed that is very true, you would have to really force it in though and you can also hear the syncro spin the gear up massively if you were to actually force it into gear....

 

Shops look out for each other. I don't believe he over revved it, zero reason for him to lie. He was cruising on the highway and it happened. Last service forgot to tighten most of the cam caps from the rear forward, as in really loose, cam flexed from the rear and shims launched, how that for a theory.

 

Not in this business. Most are trying to make others look bad.

Had a 328 factory left a cam loose, very loose. Only symptom was it kept breaking distributor rotors. I asked but factory would not let me remove cam cover to investigate. Owner got disgusted with factory not seriously wanting to fix car and sold it. Finally at 15k service I pulled the valve cover and found all 5 cam bearings loose.
No I dont believe it. If it had bent valves on one cylinder it happened at the service. It is actually kind of common.

 

Considering one time a guy ran over a subway token that flew up and sliced his timing belt, your theory isn't that far fetched!

#waybackfchatmachine

 

I remember that incident...


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Nailed it.