how much boost?
Administrator/Jarhead
Joined: Jun 2006
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From: Jonesborough, TN
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Joined: May 2006
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From: Florida
It kind of depends on the turbo you're running. The stocker at 45psi will be pushing hotter air and creating high drive pressures. That's a bad thing for head gaskets. 
A larger turbo will push the same or more boost with cooler air and less drive pressure. I think the general concensus is that 50psi is the safe max limit with a larger turbo.
A larger turbo will push the same or more boost with cooler air and less drive pressure. I think the general concensus is that 50psi is the safe max limit with a larger turbo.
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Joined: Dec 2005
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From: Twin Falls, Idaho
It kind of depends on the turbo you're running. The stocker at 45psi will be pushing hotter air and creating high drive pressures. That's a bad thing for head gaskets.
A larger turbo will push the same or more boost with cooler air and less drive pressure. I think the general concensus is that 50psi is the safe max limit with a larger turbo.
A larger turbo will push the same or more boost with cooler air and less drive pressure. I think the general concensus is that 50psi is the safe max limit with a larger turbo.
What he said!!!!^^^^^^^^^^^^^
Registered User
Joined: Jun 2005
Posts: 2,452
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From: Nebraska
You can see I have an A3k. It spikes to about 50psi and holds about 45. While I never blew the head gasket, I just had studs installed and they said that the factory bolts were loose and that it looked like I had a compression leak between number 4 and 5. Now, I have also run a little water/meth in the thing and when I was playing with a Predator in the mix I got some serious timing rattle a couple times, so who really know which one of those three things was creating too much cylinder pressure. Everyone says 50-55psi, but at this point I'd personally keep to a max of 45.
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It kind of depends on the turbo you're running. The stocker at 45psi will be pushing hotter air and creating high drive pressures. That's a bad thing for head gaskets.
A larger turbo will push the same or more boost with cooler air and less drive pressure. I think the general concensus is that 50psi is the safe max limit with a larger turbo.
A larger turbo will push the same or more boost with cooler air and less drive pressure. I think the general concensus is that 50psi is the safe max limit with a larger turbo.
Thanks,
Ken
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Joined: Apr 2004
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From: St. Louis
boost
If you're concern is relative to the headgasket only and NOT the turbo then I and many others have run for several years 60 - 70psi w/ NO problem. Now if you're talking boost and you have an oem turbo then like others have said,.. 45psi is the safe max.
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From: Louisiana
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From: Ohio
Well all i had to do was plug in the boost fooler n run crazy larry pulling a trailer, your setup i believe is different..you had boost elbows to deal with in order to get more boost, i dont