how to prevent a cracked piston - Ford Powerstroke Diesel Forum
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post #1 of 14 Old 04-11-2013, 06:50 AM Thread Starter
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how to prevent a cracked piston

Well guys u have ordered the ported intake manifold, 6.0 manifolds, and custom pipes, all gaskets, oil cooler, o ring for injectors, and waste gate.


Will the ported intake manifold prevent cracked pistons?
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post #2 of 14 Old 04-11-2013, 09:14 AM
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how to prevent cracked piston?

get rid of air obstructions and restrictions.. a ported intake will help.. very high quality injectors will too, so they don't hang open on you..
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post #3 of 14 Old 04-11-2013, 10:00 AM
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It seems cracked pistons are hit and miss. I have yet to hear of anyone cracking a piston after upgrading to either the international pistons or the coated elite or rudy's pistons. As stated above, better airflow and clean fuel will help for sure.

08 F350 cc/sb 4X4
h&s minimaxx, 5" flo pro, 4" down pipe, no limit cold air intake, dirty diesel EGR delete with intake elbow, 6.0 exhaust manifolds, custom up pipes, ported intake manifold, Apex 71mm LP turbo, Rudy's cold side pipe, diesel site coolant and transmission filter, diesel site intercooler boots, ccv mod, bilstein shocks, gogo dd solenoid, HID lights, Airdog II 165, PMF traction bars, PMF drag link, moshimoto aluminum radiator
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post #4 of 14 Old 04-11-2013, 12:14 PM Thread Starter
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That's what I'm thinking, but think about it, how much work would it be to put new pistons, and the injectors can't upgraded,(3000 is a lot for injectors) so in sticking with my old ones. Any tips on how to keep the injectors from sticking open? I already have a fass fuel pump, and run addtives from the ford house.
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post #5 of 14 Old 04-11-2013, 12:40 PM
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These injectors use a crystal as the gate.. they get hit with electricity, they expand, and close.. electricity goes away, they shrink and open... Or, maybe its the other way around.. at any rate, they rely on rail pressure for squirt, unlike the previous injectors which had tiny pumps in them that dramatically increased pressure AT/IN the injector.. they are less likely to fail than the previously used kind, but when they do, it's a lot easier to burn a hole or crack the piston because unregulated high pressure fuel is squirting in the cylinder as opposed to a lower pressure trickle..

Run good fuel.. increase the lubricity of the ultra low sulfur fuel with a good additive.. remove as much air as you can before the hpfp gets a hold of it.. that is about the best you can hope for..

Decrease air flow restrictions.. eliminate back pressure.. don't let the injector turn into a cutting torch..
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post #6 of 14 Old 04-11-2013, 12:46 PM
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Oh, and how much work to swap out pistons?


A lot..



A whole lot..


If you can somehow finagle the bedplate off with the engine in, and drop caps and bearings, you may be able to get them out of there.. might.. but even then, I bet pulling the engine would still be quicker and easier..
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post #7 of 14 Old 04-11-2013, 12:49 PM
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Quote:
Originally Posted by drewactual View Post
These injectors use a crystal as the gate.. they get hit with electricity, they expand, and close.. electricity goes away, they shrink and open... Or, maybe its the other way around.. at any rate, they rely on rail pressure for squirt, unlike the previous injectors which had tiny pumps in them that dramatically increased pressure AT/IN the injector.. they are less likely to fail than the previously used kind, but when they do, it's a lot easier to burn a hole or crack the piston because unregulated high pressure fuel is squirting in the cylinder as opposed to a lower pressure trickle..

Run good fuel.. increase the lubricity of the ultra low sulfur fuel with a good additive.. remove as much air as you can before the hpfp gets a hold of it.. that is about the best you can hope for..

Decrease air flow restrictions.. eliminate back pressure.. don't let the injector turn into a cutting torch..
Excellent explanation and advice.

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post #8 of 14 Old 04-11-2013, 01:00 PM
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Thank you, sir..

One more thing about injectors: if you have heavy fuel, as in water in it, and it makes it to the injector, when it hits the tip and the heat of the cylinder, it turns into steam.. which isn't nearly as awesome as saying "it freakin' EXPLODES!!!"... Guess what turns into shrapnel??? Your injector tip.. oops...
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post #9 of 14 Old 04-11-2013, 01:28 PM Thread Starter
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Lol yup thanks for the reply!!! You're amazing!! Quick question, I have 6.0 manifolds, up pipes waste gate, ported intake. Am I basically set? Or is it still a possibility?
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post #10 of 14 Old 04-11-2013, 01:51 PM
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I truly believe it is hit and miss. You may be set. It certainly helps your motor and reduces the possibility. Good luck!

08 F350 cc/sb 4X4
h&s minimaxx, 5" flo pro, 4" down pipe, no limit cold air intake, dirty diesel EGR delete with intake elbow, 6.0 exhaust manifolds, custom up pipes, ported intake manifold, Apex 71mm LP turbo, Rudy's cold side pipe, diesel site coolant and transmission filter, diesel site intercooler boots, ccv mod, bilstein shocks, gogo dd solenoid, HID lights, Airdog II 165, PMF traction bars, PMF drag link, moshimoto aluminum radiator
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