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Blown Engine


Hickdeads

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  • Member
  • Member For: 17y 26d

Car details - 2005 XR6T Ute, Flash tuned and dyno tuned in 2007

Yesterday it shat itself. Ford have advised that the spark plug has shattered and the engine has lost compression. They think that the conrod has broken and the piston has pushed up into the plug smashing it to pieces. I dont know a hell of alot about cars but mates that do say that this is very unusual.

Questions are

1. Does this sound right/likely? Would this be because it was poorly tuned?

2. Anyone know a good place to get it fixed in SW Sydney(Liverpool)

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  • Member For: 17y 10m 22d
  • Gender: Male
  • Location: SW Sydney

There can be a million (maybe not that many) reasons why the motor popped mate. Bad fuel, a lean tune, fuel pump failure, thrashing on a hot day (lean out again), fuel surge due to low fuel level etc etc.

Was it just tuned, or was there more work done? Did it blow when you were racing or what?

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  • Member For: 21y 10m 28d
  • Gender: Male
  • Location: Sydney

Now this is one id be getting a second opinion on.

There would be severe head damage as well, so if they put a camera down the bore this should show up on top of the piston.

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  • Member For: 17y 26d

Senna T - Yeah just the standard Flash tune done. I had some initial problems with it but took it back to the guys that did it and they fixed it and havent had a real problem since. Wasnt racing in the slightest. Just cruising. I dont give it a thrashing at all really. As much as you can in suburban peak hour traffic anyway. Never been to a race track or anything.

Edited by Hickdeads
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  • Forged Member
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  • Member For: 17y 10m 22d
  • Gender: Male
  • Location: SW Sydney

As mick said, I'd definately be getting it towed to a good workshop for a diagnosis, unfortunately you have bad luck considering its now christmas and alot of workshops will be closed soon.

Try calling JEM (ingleburn) or Crescent Motorsports (Liverpool) for a local choice, alternatively there is CV Performance at Taren Point, or Autotech Engineering at Granville. The last two are forum sponsors and really know their way around these cars.

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  • Member For: 18y 7m 23d
  • Location: Melbourne

Of course it's possible the engine detonated itself to death, breaking a conrod with the result mentioned in your first post.

So, what would cause it - well running under boost, and a bad batch of fuel...and krrrr.....there she goes. Did you hear a loud bang and then silence?

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  • 3 weeks later...
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  • Member For: 17y 26d

Well for anyone interested I have been hard at working with the old man taking my expensive paper weight apart and have discovered something that is puzzling to say the least. Its taken several days on and off working on it over xmas, and in excess of 10-12hrs labour but we finally got the head off and discovered what caused my car to crap itself.

We started by removing the obvious. Rocker cover, Cam etc.

25122009001.jpg

http://i920.photobucket.com/albums/ad47/hickdeads/05012010003.jpg

When it came time to remove the head we were completely astonished to find sitting there on top of the piston, what can only be described as part of an Allen key. I know it sounds crazy but I can think of no other piece of metal which has the same appearance.

http://i920.photobucket.com/albums/ad47/hickdeads/05012010006.jpg

Judging by the damage to the head adjacent to one of the valves(See photo)it has slipped through there.

http://i920.photobucket.com/albums/ad47/hickdeads/05012010011.jpg

http://i920.photobucket.com/albums/ad47/hickdeads/05012010012.jpg

So where to go from here im not really sure. The head is pretty buggered but im told can be repaired and ill do the valves and springs at the same time. Quoted about $500. Sound ok?

The questions from here are almost endless. How did it get there? Where is the rest of it? Is the piston buggered? It has some minor score marks on it but the bore wall seems ok? Either way its going to be a while before im back on the rd and probably quite a few dollars later. If anyone has any ideas, advice or anything else usefull, feel free to post.

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