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Old 08-22-2005, 01:24 PM   #1
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Blew up my car!

I broke it.

Here's the story.

Took Friday off work for dyno tuning for my turbo. Made some wicked numbers!



We even cut it off a bit early. I'm sure that if we held it right to redline (7300) we would have made 250 to the wheel on the mustang dyno. Power mods for this car are a T3 turbo topping out at 11psi. 42 pound injectors, and no catalytic converter. I'm still on the stock exhaust which includes two mufflers and a resonator. There's lots more power to be made with this thing.

Anyways...

Saturday I was in Edmonton for the SVTOA track day. What a great event!

Saturday night on the way home, just outside Leduc... was on the highway... gave it some gas in 6th gear to pass a van... suddenly heard some rattling, followed by a cloud of white smoke. Pulled over... she was done.



Here's what happened:

My air/fuel was great. Low 11:1 through the entire wot table.

When we were installing the turbo manifold, we noticed cylinder #3's exhaust port was black. there was some carbon build up. It was definetly burning oil. We knew it was an issue, but didn't think much of it... didn't think it would become a huge issue so soon.

Either way, it was too safe of a tune to be detonation to harm a piston . it is most surely the rings .

We'll have the head off this week to check things out for sure.

So we'll replace the piston and ring in number three. and replace all the other rings as well, with a custom gap. the stock gap is just too tight for the amount of heat it's creating. they will expand too much, put pressure on the landings and... boom!

The head is going to be sent to a machinist. I'm pretty sure he'll notice that the valves for cylinder three aren't seating properly, which seems to be common with this car. It's creating a lean condition in number three, causing the failures. Not only has it happened to me now, but it happened to my friend's supercharged svtf last year... and numerous other people. Over the last couple years I recall reading a few posts on fj and here of similar failures... Always cylinder number three.

While the head is off, the machinist will give it a full port and polish as well. So the car will be back soon. And making more power than before. Just a matter of time.


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Old 08-22-2005, 02:28 PM   #2
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Is your kit intercooled,if not 11PSI on stock motor is too much.Also you can have detonation on rich tune if the timing is advanced too much.Anyway good luck next time
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Old 08-22-2005, 02:31 PM   #3
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OH NOEEEEEEEES!!!!!!!!

i hope you get your focus fixed up with the quickness and it doesnt cost you a left nut. good luck bro.
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Old 08-22-2005, 02:37 PM   #4
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No worries, it will be all right. I get a great discount from Ford on parts, and I have a good friend who owns a shop. It will be cheap. She'll be back on the road soon, and better than ever! I'm not too put off by this incident. Hell, I wouldn't have started this project if I couldn't handle some mishaps and downtime.

Oh... it was only making 7psi when it blew... heh.
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Old 08-22-2005, 05:56 PM   #5
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sorry to hear about the focus but that is one awesome picsture of it getting towed. it looks so mean sitting there
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Old 08-22-2005, 06:01 PM   #6
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that sucks to hear of the problem with cylinder three...kinda odd? what is going to be the grand total of this fix up?
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Old 08-22-2005, 06:10 PM   #7
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Damn that sucks
good to hear itll be alive again
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Old 08-22-2005, 11:44 PM   #8
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white smoke = burning coolant
blue smoke = burning oil
black smoke = INSANELY rich burn...cars usually don't run well or at all with black smoke.
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Old 08-23-2005, 10:03 AM   #9
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nothing to do with coolant. it's the piston ring.

i've got all the parts ordered. under our SVTOA discount I'm getting:

1) piston and ring assembly
2) 3 sets of rings
4) 4 rod end bearings
5) head gasket
6) cam seals
7) head bolts

all for $500 cdn dollars ( about 400 us dollars).
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Old 08-23-2005, 07:38 PM   #10
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How many miles did you have on your car before the turbo and when you had the breakdown?
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