Build thread, Triple Turbo 6.7L Race truck build

JDub · Oct 24, 2014

Damn. That's not how the night was supposed to go

powerstrokedkid87 · Oct 25, 2014

That sucks.... Hopefully you guys give it 1 more go. Everyone's pulling for that 9second pass

mandkole · Oct 25, 2014

Nah, the hose would have needed to see over 175 psi.

01PSD · Oct 25, 2014

What did it sound like? That was insane pressure to rip that tank open.. LOL

Craig@MFI · Oct 25, 2014

Sounded like $$$$$$$$ no that the motor has a rod knock

6 L chevy eater · Oct 25, 2014

Craig@MFI said:
Sounded like $$$$$$$$ no that the motor has a rod knock

ouuucccchhh................:doh:

gfulton · Oct 25, 2014

Craig@MFI said:
Sounded like $$$$$$$$ no that the motor has a rod knock

Stuff a few bananas in the crankcase it will quieten it down......:doh:

powerstroked08 · Oct 25, 2014

So I'm gonna say it will get h13's from now on? Sorry for the sh!t luck man. I hope its nothing major, but it doesn't sound too promising with that kind of sound coming out of her.

madman1234509 · Oct 25, 2014

01PSD said:
What did it sound like? That was insane pressure to rip that tank open.. LOL

It may not necessarily be insane pressure, but constant expanding and contracting from pressure. Same thing that happened to my intake manifold, when it sees pressure it balloons and then contracts. Do this a few hundred times and it weakens the weld, causes it to rupture. It makes me wonder how long you were getting pressure in the coolant system. Obviously your welds are of good quality, so it wouldn't just rupture from 1.5 times of seeing some pressure in the coolant system.

swinky · Oct 25, 2014

They can build a lot of pressure. The cap can't even begin to bleed off fast enough with a badly blow gasket. I'd see 30+ psi In my little 600 ish hp 6.0.

Craig@MFI · Oct 26, 2014

madman1234509 said:
It may not necessarily be insane pressure, but constant expanding and contracting from pressure. Same thing that happened to my intake manifold, when it sees pressure it balloons and then contracts. Do this a few hundred times and it weakens the weld, causes it to rupture. It makes me wonder how long you were getting pressure in the coolant system. Obviously your welds are of good quality, so it wouldn't just rupture from 1.5 times of seeing some pressure in the coolant system.

Yea pretty much had nothing to do with expanding and contracting a few times it all boils down to the studs being to weak and watching you boost gauge go from 100 psi to 63 psi and a loud boom and white smoke and antifreeze all across the engine

swinky · Oct 26, 2014

Craig@MFI said:
Yea pretty much had nothing to do with expanding and contracting a few times it all boils down to the studs being to weak and watching you boost gauge go from 100 psi to 63 psi and a loud boom and white smoke and antifreeze all across the engine

Sorry if it's a stupid question but losing that much boost because of head gaskets?

4EverBoosted1 · Oct 26, 2014

Craig@MFI said:
Yea pretty much had nothing to do with expanding and contracting a few times it all boils down to the studs being to weak and watching you boost gauge go from 100 psi to 63 psi and a loud boom and white smoke and antifreeze all across the engine

Something was expanding and contracting over time otherwise you would have blown it on the first track pass.

madman1234509 · Oct 26, 2014

Only reason I mentioned that is they just looked like pretty good welds. Crazy to think one pressure spike of 40ish psi made it blow like that. But, hopefully you get it squared away quickly and get it back out there... we are all hoping for a 9 second fuel only pass for Ford before the end of the year!!

50_shooter · Oct 26, 2014

A square container cant take much pressure. That's why all pressure vessels have rounded edges.

madman1234509 · Oct 26, 2014

That's true

Craig@MFI · Oct 27, 2014

Well we are officially done for the season as one cylinders is a 1/2 shorter than the rest
Piston is fine but has some serious score marks hoping is a bent wrist pin and not a rod

bigrpowr · Oct 27, 2014

Craig@MFI said:
Well we are officially done for the season as one cylinders is a 1/2 shorter than the rest
Piston is fine but has some serious score marks hoping is a bent wrist pin and not a rod

prolly a pin . would take a ton of coolant to bend the rod.