karps Posted January 17, 2008 Posted January 17, 2008 this has probably been posted before but hey ho video of what happens inside your engine http://www.liveleak.com/view?i=73e_1192001762
jac Posted January 17, 2008 Posted January 17, 2008 You know how it all works, but its good to See it for real. Nice find mate
thewelsho Posted January 17, 2008 Posted January 17, 2008 (edited) karps said: this has probably been posted before but hey hovideo of what happens inside your engine http://www.liveleak.com/view?i=73e_1192001762 Yup, nice find indeed. Here is a video of what it looks like when it all goes wrong!!! Edited January 18, 2008 by TheWelsho
jac Posted January 18, 2008 Posted January 18, 2008 TheWelsho said: Yup, nice find indeed. Here is a video of what it looks like when it all goes wrong!!! What did the garage say caused the damage to the piston ?
fai17 Posted January 18, 2008 Posted January 18, 2008 JAC said: What did the garage say caused the damage to the piston ? ......m8 you piston are made fae chocolate
thewelsho Posted January 18, 2008 Posted January 18, 2008 JAC said: What did the garage say caused the damage to the piston ? Detonation.
kulataz Posted January 18, 2008 Posted January 18, 2008 TheWelsho said: Detonation. Blame Roy Castle, he used to say "Detonation thats what you need!!!!!"
scoobymark Posted January 19, 2008 Posted January 19, 2008 TheWelsho said: Detonation. Thought part of your parole agreement was to stay away from explosives
higgy Posted January 19, 2008 Posted January 19, 2008 another reason for the lands to break is from running to much boost on weak(standard wrx) pistons . Generaly speaking detination would not cause this , but if there was dedenation your pistons would normaly fail at the crown of the piston. Higgy
dipsy Posted January 19, 2008 Posted January 19, 2008 TheWelsho what state were the piston rings like with that damage to the piston and was there any damage to the liner
craigdmcd Posted January 20, 2008 Posted January 20, 2008 Sorry, but the piston out of my GT-B took a bit more abuse than that, but then, there was no chance of mine running at the end of this : That is some nice damage to your piston that wouldn't show without careful inspection though. Craig
jac Posted January 20, 2008 Posted January 20, 2008 higgy said: another reason for the lands to break is from running to much boost on weak(standard wrx) pistons .Generaly speaking detination would not cause this , but if there was dedenation your pistons would normaly fail at the crown of the piston. Higgy I keep forgetting John's car was a wrx
fai17 Posted January 20, 2008 Posted January 20, 2008 JAC said: I keep forgetting John's car was a wrx chocolate pistons
StrikE Posted January 20, 2008 Posted January 20, 2008 Chocolate pants........ ever had a con rod pop outa a block at speed, had that in an old astra gte, not funny
dipsy Posted January 20, 2008 Posted January 20, 2008 CraiddMcd that looks terrible what did the engine look like after that
craigdmcd Posted January 20, 2008 Posted January 20, 2008 Dipsy said: CraiddMcd that looks terrible what did the engine look like after that The alloy triangular section is a chunk from the n/s cylinder block, and 2 valve heads got snapped completely off the stems. As you can guess, the engine was totalled, and could only swap the ancillaries to a new engine. The inexperience of running a JDM on standard UK fuel, a low fuel load, and a giving chase to a Merc at continuous high revs was an expensive learning curve.
thewelsho Posted January 20, 2008 Posted January 20, 2008 Dipsy said: TheWelsho what state were the piston rings like with that damage to the piston and was there any damage to the liner Never saw the rings mate, but they must have been ok because they held the broken part in place otherwise it would have totally shafted the liner. As it was, the liner had some markings, but nothing too drastic.
thewelsho Posted January 20, 2008 Posted January 20, 2008 craigdmcd said: The alloy triangular section is a chunk from the n/s cylinder block, and 2 valve heads got snapped completely off the stems. As you can guess, the engine was totalled, and could only swap the ancillaries to a new engine. The inexperience of running a JDM on standard UK fuel, a low fuel load, and a giving chase to a Merc at continuous high revs was an expensive learning curve. Holy crap, what a MESS! I saw an Impreza at Hypertech with lumpbs of engine casing all over the engine bay, was that yours? Dunc did say that the car in question was pursuing a Porsche. Maybe he got his cars mixed up, so, WIY?
craigdmcd Posted January 20, 2008 Posted January 20, 2008 TheWelsho said: Holy crap, what a MESS! I saw an Impreza at Hypertech with lumpbs of engine casing all over the engine bay, was that yours? Dunc did say that the car in question was pursuing a Porsche. Maybe he got his cars mixed up, so, WIY? No, that was not me, I fitted my engine myself and mine is a Legacy GT-B. The con-rod and the gudgeon pin, I had to retrieve from the bottom of the sump. People ask what broke first, and to be honest I never studied it hard enough to find out, and let's face it - knowing wasn't going to help me rebuild it.
thewelsho Posted January 20, 2008 Posted January 20, 2008 higgy said: another reason for the lands to break is from running to much boost on weak(standard wrx) pistons .Generaly speaking detination would not cause this , but if there was dedenation your pistons would normaly fail at the crown of the piston. Higgy Andy.F was telling me that the 2.5 cars run much tigher tolerances due to emmissions etc. When the 2.5 car had its debut in the US there was a whole load of cars nicking pistons in the tigher-than-normal bore. They had them a year before us, so in that time hope/think that Subaru would have sorted it. Its possible that this is what happened to my car.
higgy Posted January 21, 2008 Posted January 21, 2008 TheWelsho said: Andy.F was telling me that the 2.5 cars run much tigher tolerances due to emmissions etc. When the 2.5 car had its debut in the US there was a whole load of cars nicking pistons in the tigher-than-normal bore. They had them a year before us, so in that time hope/think that Subaru would have sorted it. Its possible that this is what happened to my car. ahaa I had two pistons go when i did my rebuild last year , luckely i caut it before it went bang, i was running tomuch boost on them and the lands decided to go . Could have made some mes like yours did. When i get my turbo back im going to be upping it a little more in the quest of 550 bhp Higgy
jac Posted January 21, 2008 Posted January 21, 2008 TheWelsho said: Andy.F was telling me that the 2.5 cars run much tigher tolerances due to emmissions etc. When the 2.5 car had its debut in the US there was a whole load of cars nicking pistons in the tigher-than-normal bore. They had them a year before us, so in that time hope/think that Subaru would have sorted it. Its possible that this is what happened to my car. This seems to be a prob with the 2.5, thats what puts me of getting one. I think i will stay with my 2.2 CDB.
jac Posted January 21, 2008 Posted January 21, 2008 higgy said: ahaaI had two pistons go when i did my rebuild last year , luckely i caut it before it went bang, i was running tomuch boost on them and the lands decided to go . Could have made some mes like yours did. When i get my turbo back im going to be upping it a little more in the quest of 550 bhp Higgy Looking forward to this one,its going to be a real flyer
thewelsho Posted January 21, 2008 Posted January 21, 2008 JAC said: This seems to be a prob with the 2.5, thats what puts me of getting one. I think i will stay withmy 2.2 CDB. Put the Wossner piston in and you'll be sorted!!!
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