Hi, Guest
08-24-2005, 08:22 AM
Yep. It's true.
Here's the story.
Took Friday off work for dyno tuning for my turbo. Made some wicked numbers!
![[Image: turbodyno.jpg]](http://www.framedfiction.com/posts/turbodyno.jpg)
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.
![[Image: broken-tow.jpg]](http://www.framedfiction.com/posts/broken-tow.jpg)
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 in the states. 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.
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 in the states. 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.