Trifecta infiniboost
Quote:
Originally Posted by BYT*SS*TURBO
Don't run anything above 24psi without pistons/rings is what you meant
A Gm Tech came on and stated the stock equipment will score the cylinder walls from the rings expanding over 24psi of boost. Most people now stay below that number LOL!
High boost will not cause piston rings to expand. Heat will. Now with 24 psi your gonna get highter combustion temperature. And the gms1 tune puts the car to 22 psi, i doubt gm would set the boost so close to a boost level that could cause catastrophic failures. I've seen guys blow the plastic side tanks of their stock IC at around 25 psi.
Originally Posted by BYT*SS*TURBO
Don't run anything above 24psi without pistons/rings is what you meant
A Gm Tech came on and stated the stock equipment will score the cylinder walls from the rings expanding over 24psi of boost. Most people now stay below that number LOL!
High boost will not cause piston rings to expand. Heat will. Now with 24 psi your gonna get highter combustion temperature. And the gms1 tune puts the car to 22 psi, i doubt gm would set the boost so close to a boost level that could cause catastrophic failures. I've seen guys blow the plastic side tanks of their stock IC at around 25 psi.
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Quote:
Originally Posted by BYT*SS*TURBO
Don't run anything above 24psi without pistons/rings is what you meant
A Gm Tech came on and stated the stock equipment will score the cylinder walls from the rings expanding over 24psi of boost. Most people now stay below that number LOL!
High boost will not cause piston rings to expand. Heat will. Now with 24 psi your gonna get highter combustion temperature. And the gms1 tune puts the car to 22 psi, i doubt gm would set the boost so close to a boost level that could cause catastrophic failures. I've seen guys blow the plastic side tanks of their stock IC at around 25 psi.
Originally Posted by BYT*SS*TURBO
Don't run anything above 24psi without pistons/rings is what you meant
A Gm Tech came on and stated the stock equipment will score the cylinder walls from the rings expanding over 24psi of boost. Most people now stay below that number LOL!
High boost will not cause piston rings to expand. Heat will. Now with 24 psi your gonna get highter combustion temperature. And the gms1 tune puts the car to 22 psi, i doubt gm would set the boost so close to a boost level that could cause catastrophic failures. I've seen guys blow the plastic side tanks of their stock IC at around 25 psi.
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From: Virginia
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As far as getting an infiniboost to go above 25 psi this is what I got from vince.
This is from me beforehand
He explained to me that from a tune no more then 24-25 psi can be run.
"Ok
The ECMs control over the turbo speed is similar to a dimmer switch think of it as a range of 0 to 100. The higher the number, the more the wastegate is closed. At 100, the wastegate is fully closed, at least as far as the ECM has control over.
Some cars can make 25psi at 100%, some can only make 22psi. Why? I have no idea. It could have to do with the type of mods installed, or the altitude at which the car is being run. It could have something to do with the wastegate actuator adjustment."
The ECMs control over the turbo speed is similar to a dimmer switch think of it as a range of 0 to 100. The higher the number, the more the wastegate is closed. At 100, the wastegate is fully closed, at least as far as the ECM has control over.
Some cars can make 25psi at 100%, some can only make 22psi. Why? I have no idea. It could have to do with the type of mods installed, or the altitude at which the car is being run. It could have something to do with the wastegate actuator adjustment."
"Yea, lets use the last tune and adjust the rev limited for that one.
If you could explain the boost limits better so I can better understand. With my cars I've always used a boost controller of some sort or an aftermarket Ecu/wastegate ect ect. I only don't fully understand as I see others running 25+ psi. Whats causing the limit, or better yet what can be done to stretch them a tad farther?
Thanks Vince"
If you could explain the boost limits better so I can better understand. With my cars I've always used a boost controller of some sort or an aftermarket Ecu/wastegate ect ect. I only don't fully understand as I see others running 25+ psi. Whats causing the limit, or better yet what can be done to stretch them a tad farther?
Thanks Vince"
What people need to realize is that the stock turbo is way out of it's range at that high of a boost level. It's about airflow. A bigger turbo is the real solution, not forcing the stocker to overwork itself. Or, really, more supporting mods, to make more power at 21 psi where it's happy.
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The most boost pressure that can be seen is approx 30psi in the midrange but the turbo is way out of it efficiency range at that pressure ratio even in the lower RPMs. 24 psi is the most pressure that should be run with the stock turbo IMHO. One of the reasons some cars boost a max of 22-23psi instead of 25+ psi is often due to the WG rod adjustment assuming altitude is not a factor.
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Yes, I know that but greater pressure means higher temperatures which will cause the rings to expand. I said the pressure and ring expansion were related but I never said "pressure itself causes the rings to expand" that was Backyard Turbo not me.
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Thats why i said in my post "i know it wasnt your post"
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