Head Gaskets

lincolnlocker · Apr 15, 2017

gnxtc2 said:
Any time a valve contacts a piston, valve bends.

Billy T.
[email protected]

it does? I bent 8 pushrods in whitey. when I had it "rebuilt" the first time, all 8 pistons had valve stamps in them.. valves where all still straight... couple guides where sticky is all... 7.3 pistons and valves are perfectly flat and inline with each other...

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greyford1979 · Apr 15, 2017

Oh and btw, doing head studs suck a$$ lol.

lincolnlocker · Apr 15, 2017

greyford1979 said:
Oh and btw, doing head studs suck a$$ lol.

why do they suck ass?

is the motor still in the truck?

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greyford1979 · Apr 16, 2017

lincolnlocker said:
why do they suck ass?

is the motor still in the truck?

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Yep, did them in the truck. That and just time consuming lubing all the studs, washers, and nuts and then torquing them down.

gnxtc2 · Apr 16, 2017

Did you torque cycle the studs?

Billy T.
[email protected]

lincolnlocker · Apr 16, 2017

greyford1979 said:
Yep, did them in the truck. That and just time consuming lubing all the studs, washers, and nuts and then torquing them down.

oh I got ya..

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greyford1979 · Apr 16, 2017

gnxtc2 said:
Did you torque cycle the studs?

Billy T.
[email protected]

Yep sure did, per the instructions.

Magnum PD · Apr 16, 2017

Leave the 3/4" impact in the tool box?

greyford1979 · Apr 30, 2017

Got her fired up today, couldn't believe how easily it fired up after all this time and with no smoke. Can't give it a test drive yet, flushing the cooling system right now and have the rear suspension torn apart right now. So far so good though. Before it would instantly build extreme pressure in the overflow after running for just a couple minutes, right now it's building normal pressure while I'm running it flushing the system. So keeping my fingers crossed lol.

greyford1979 · May 3, 2017

Truck is running well so far. No puking coolant, no overheating, no over pressurizing the over flow tank, and no white exhaust. Heat is working well and truck seams pretty peppy even though I've been too skeerd to try it in anything but the daily driver tune LOL.

Arisley · May 4, 2017

I have heard that it takes a while for head gaskets to seat really good on a 7.3. Good call in taking it easy for a while.

mikeeg02 · May 4, 2017

Glad she's back up and running. You're a 1%'er For sure. Head gaskets are such a rare problem on a 7 3!

greyford1979 · May 4, 2017

Arisley said:
I have heard that it takes a while for head gaskets to seat really good on a 7.3. Good call in taking it easy for a while.

Yeah I definitely don't wanna be pulling the heads again any time soon lol.

mikeeg02 said:
Glad she's back up and running. You're a 1%'er For sure. Head gaskets are such a rare problem on a 7 3!

Yeah I definitely didn't find much in the way of head gasket issues when I was searching when it first happened. I'm sure the neighbors are just thrilled it's running again lol.

lincolnlocker · May 7, 2017

greyford1979 said:
Yeah I definitely don't wanna be pulling the heads again any time soon lol.

Yeah I definitely didn't find much in the way of head gasket issues when I was searching when it first happened. I'm sure the neighbors are just thrilled it's running again lol.

take it easy with lots of heat cycles.. like less then 25lbs of boost. studs help a ton but better safe then sorry.

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uncool · May 8, 2017

35 psi on Victor gaskets and ARP's after 15 minutes of run time, the 1 mile drive down the dirt road on a totally fresh rebuild.

Motor is fine, transmission is hating life, 250k on the factory trans.

If it is gonna go, is gonna go.

lincolnlocker · May 8, 2017

uncool said:
35 psi on Victor gaskets and ARP's after 15 minutes of run time, the 1 mile drive down the dirt road on a totally fresh rebuild.

Motor is fine, transmission is hating life, 250k on the factory trans.

If it is gonna go, is gonna go.

i had 8k on my supposedly fresh rebuild and many many heat cycles with the first 5k staying under 30 psi and the rest around or under 38psi and they both popped at once one night.... blame that on the rebuild when put together or is that just dumb luck?

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greyford1979 · May 8, 2017

lincolnlocker said:
i had 8k on my supposedly fresh rebuild and many many heat cycles with the first 5k staying under 30 psi and the rest around or under 38psi and they both popped at once one night.... blame that on the rebuild when put together or is that just dumb luck?

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That's my type of luck right there LOL.

dsberman94 · May 8, 2017

lincolnlocker said:
i had 8k on my supposedly fresh rebuild and many many heat cycles with the first 5k staying under 30 psi and the rest around or under 38psi and they both popped at once one night.... blame that on the rebuild when put together or is that just dumb luck?

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That was your **** engine builder I believe. No way to sugar coat that.

uncool · May 9, 2017

lincolnlocker said:
i had 8k on my supposedly fresh rebuild and many many heat cycles with the first 5k staying under 30 psi and the rest around or under 38psi and they both popped at once one night.... blame that on the rebuild when put together or is that just dumb luck?

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Hard to say,

Built many a motor, took to the dyno and broke in and tuned. Then in the car/truck/boat right to the track/street/lake.

How many miles do people have on new 7.3's off the lot that got chipped within the first hundred miles? A lot of those trucks are still around today with no issues.

Yours maybe the guy had a bad day during assembly.

I just don't buy the whole assemble the motor then drive it easy for the first 20000 miles under 20 psi so the gaskets can take a set, then crank it up.