Mack Technician Posted August 15, 2017 Share Posted August 15, 2017 Today I saw the worst engine failure I have seen on a stock engine. The Sleeve hydraulically split from it's top land, dropped down the rod and was rapidly disintegrated against the cam and engine interior walls. 1 Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted August 15, 2017 Author Share Posted August 15, 2017 On the bright side we have very good wear return on the cylinder hatching. 1 Quote Link to comment Share on other sites More sharing options...
Hobert62 Posted August 15, 2017 Share Posted August 15, 2017 How old was it? Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted August 15, 2017 Author Share Posted August 15, 2017 4,840 hours. Not Mack. 4 cylinder diesel out of a rolling excavator. Quote Link to comment Share on other sites More sharing options...
carlotpilot Posted August 15, 2017 Share Posted August 15, 2017 that was noise`y while in progress Quote Link to comment Share on other sites More sharing options...
Ezrider Posted August 15, 2017 Share Posted August 15, 2017 that had to make quite the racket Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted August 16, 2017 Author Share Posted August 16, 2017 Guy said it sounded like a jake brake. Engine has no jakes. 1 Quote Link to comment Share on other sites More sharing options...
KDog Trucking Posted August 16, 2017 Share Posted August 16, 2017 Cool! Haven't seen that before. Quote Link to comment Share on other sites More sharing options...
41chevy Posted August 16, 2017 Share Posted August 16, 2017 Anything salvageable? Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment Share on other sites More sharing options...
j hancock Posted August 16, 2017 Share Posted August 16, 2017 Holy Crap! Quote JimIt doesn't cost anything to pay attention. Link to comment Share on other sites More sharing options...
Timmyb Posted August 16, 2017 Share Posted August 16, 2017 I almost wish that was my engine. Almost, but not really. Does the owner see the lighter side of it yet? Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted August 16, 2017 Author Share Posted August 16, 2017 Complete loss, no salvage except accessories. They put too small a turbo on this dual turbo Inter 4 engine. The seal blows and dumps a mass flow of oil into the engine intake. Hydro fracture separates the sleeve crown and now you have a "jake brake". Funny thing is there was no run-away on oil feed, engine wasn't over revved. Two years ago I did an in chassis two cylinder rebuild on the inter 3 version of this motor for hydro-fracture. A hydraulic pump seal failed and filled the engine till oil came out the crank recirculation and right into the engine intake. Sheared the piston rings off the piston on #1, damaged #2, but sleeve remained. Guess it is a matter of how much oil hits the engine cylinder and how fast the event occurs? This cylinder was opposite the inlet side of the intake manifold. We all agreed buying extended warranty on a new production engine was a good idea. It paid off, 3 years/ 10,000 hours coverage(so we are seeing the lighter side). This is the fourth machine to do this out of our dealership's loop. Pic of the intake grid. 1 Quote Link to comment Share on other sites More sharing options...
h67st Posted August 16, 2017 Share Posted August 16, 2017 Great photos! The worst one I had was in a steel nose R model (RD?) with a Cat 3406. One of the rods broke and flailed around the crank journal, busting out both sides of the block. I don't think anything was salvageable. Quote Link to comment Share on other sites More sharing options...
Freightrain Posted August 16, 2017 Share Posted August 16, 2017 I would have to dig up my motor pics from 2000 when I broke the crank in 5 pieces! Ugly. Took back of block off. This is my transmission from a few weeks ago. Bye into the final and this happened.... 2 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment Share on other sites More sharing options...
Mack Technician Posted August 16, 2017 Author Share Posted August 16, 2017 I would have to dig up my motor pics from 2000 when I broke the crank in 5 pieces! Ugly. Took back of block off. This is my transmission from a few weeks ago. Bye into the final and this happened.... Safe guess you are torqueing past spec a bit? Quote Link to comment Share on other sites More sharing options...
j hancock Posted August 16, 2017 Share Posted August 16, 2017 Damn Larry! Doug Nash box? Hole in box (or engine) is hole in wallet. That sucks. Quote JimIt doesn't cost anything to pay attention. Link to comment Share on other sites More sharing options...
Freightrain Posted August 16, 2017 Share Posted August 16, 2017 That is actually a G force GF5R. Pretty much top of the line stuff...........but they all still break (sooner or later). That transmission was basically a sponsorship kinda deal. I called my guy in PA and he is getting me parts to rebuild it. So, currently I put my old Doug Nash box back in that I've run since 1996. I've broken a gear or two, maybe a shaft, but I've NEVER had one come apart this bad. It broke when I hit 3rd gear, the parts then went to the rear of the case and got tangled up in 1-2 gear and that forced the cluster shaft down and out! The aluminum handcuff that is suppose to keep the shafts together got blown apart! I've checked runout on the shafts and they are still good. Just need a case, 1st, 2nd, 3rd gears. Simple huh? If I had to pay it would be north of $2500, easy. Glad I have someone that likes me and wants to give me stuff! I have dealt with him since I bought my Nash for any parts I've needed. My car typically doesn't spit stuff out, but every year or two it will break a gear. Pretty lucky overall. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment Share on other sites More sharing options...
Freightrain Posted August 16, 2017 Share Posted August 16, 2017 Safe guess you are torqueing past spec a bit? Not really. It is all clutch related for the most part. Hit anything too hard and it will break. The track was hooking, hard that day. I don't usually have to loosen the clutch up as I have it set at a pretty safe spot. We just put it up to it was an old box, LOTS of passes. Just put its time in and decided it was done. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment Share on other sites More sharing options...
Freightrain Posted August 16, 2017 Share Posted August 16, 2017 (edited) Heyyy, I found the pictures. It was the top of 2nd gear, 6000 rpm and..............Bang. It shook really hard, but with that big hunk of counterweight on the back of the crank spinning with the flywheel it took a few seconds to settle down. Didn't really make any mess on the track, the pan kept most all of it inside. Only fell apart when I took it out of the car. The crank is broken in 5 pcs. From the center main forward it is perfect shape. No 3/6 rods are holding onto a chunk, 4/8 are on another chunk(see it laying in the pan in lower picture) I have a picture of me standing next to the car/motor after I got it........I know I looked A LOT younger back then LOL! Edited August 16, 2017 by Freightrain 1 1 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment Share on other sites More sharing options...
Mack Technician Posted August 16, 2017 Author Share Posted August 16, 2017 All a good argument for a scatter blanket. Quote Link to comment Share on other sites More sharing options...
j hancock Posted August 17, 2017 Share Posted August 17, 2017 Ahh.... some $ponsership! Amazing that the shafts run true. Quote JimIt doesn't cost anything to pay attention. Link to comment Share on other sites More sharing options...
Freightrain Posted August 17, 2017 Share Posted August 17, 2017 All a good argument for a scatter blanket. Engine blankets are becoming more mandated then ever before. Mostly to help with clean up and the other is to keep cars from getting in their own oil and having bad things happen down track. They were talking about a year ago that even a 12 second street car would need a blanket. That was quickly squashed because so many factory cars will run 12's easily and most people are not going to spend that kind of money and headache on a daily driver. 1 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment Share on other sites More sharing options...
BillyT Posted August 17, 2017 Share Posted August 17, 2017 Freightrain, you're a drag racer,speaking of destruction have you seen the photo of the Willys gasser from the 60s with the crank,pistons, and nearly every reciprocating part visable in the smoke under the engine?😁 By the way my friend from Ohio says he has been watching you race your Ford wagon for years! Quote Link to comment Share on other sites More sharing options...
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