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Maximum Boost on Stock '05 Turbo
Just looking for some info on the stock '05 turbo.
What is the maximum boost the stock '05 turbo will support? What additional mods does it take to support that level of boost from the stock turbo? Thanks for any info. |
I don't know. I've seen people run really high spikes on race gas and/or methanol. Then again, one of those guys just spun a bearing in his block. I don't think it's smart to do this. You need to be more specific with your question. Are you talking about holding, are you talking about at redline? What exactly?
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Looking for what the stock turbo can hold for maximum boost. I've seen threads that say it can't go any higher than 20.5 with a boost controller on stock parts. What I want to know is how high of boost it can reliably handle (21, 22?) and what other parts (injectors, fuel pump, ...) it needs to get it up there?
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Originally Posted by atlvalet
I don't know. I've seen people run really high spikes on race gas and/or methanol. Then again, one of those guys just spun a bearing in his block. I don't think it's smart to do this. You need to be more specific with your question. Are you talking about holding, are you talking about at redline? What exactly?
A stock 05 will not hold more than 17-18 psi boost even with a boost controller (set to 21) past 5500 RPM. You need a turboback to get rid of the taper. With a turboback, boost controller, and reflash, you'll be able to hold 21 or so. |
Originally Posted by atlvalet
I don't know. I've seen people run really high spikes on race gas and/or methanol. Then again, one of those guys just spun a bearing in his block. I don't think it's smart to do this. You need to be more specific with your question. Are you talking about holding, are you talking about at redline? What exactly?
Stock turbo can spike upto 32psi or so... I've been able to hold 29psi 'til 'bout 6,000rpm, where it will eventually taper down to 23psi or so. |
Originally Posted by ct9a gsr
Stock turbo can spike upto 32psi or so... I've been able to hold 29psi 'til 'bout 6,000rpm, where it will eventually taper down to 23psi or so.
EDIT::nevermind...didn't bother lookin at ur sig,...but im still amazed u can hold that much boost... |
Originally Posted by ct9a gsr
Who was the guy that spun a bearing from high boost on stock turbo (just curious)?
Stock turbo can spike upto 32psi or so... I've been able to hold 29psi 'til 'bout 6,000rpm, where it will eventually taper down to 23psi or so. Also, how do you think you spun your bearing? |
Motor is 100% fine. I do have damages to the car, however they were not caused by too much boost. I may even have pics of my block while it's out of the car to show no visible damages done for daily-driven 29psi.
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so is it absolutely certain that boost can't cause a spun bearing?
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ct9a gsr whats damage on your car tranny clutch?
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It is the detonation of hi boost that crushes the rod bearing and allowing it to spin on the journal which blocks the oil and no oil= broken rod etc. If your octane supports the boost with no detonation, 40 psi won't spin a bearing if tuned properly.
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increase octane or retard timing...
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Thanks for the feedback.
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1st of all boost will not cause spun bearing. Detonation could contribute due to sudden and extreme force on bearing.
Most likely the spun bearing was a result of some lubrication system failure like low oil, old oil, loss of pressure due to......??????????? On topic, I do not know the max but i have run as much as 26psi with little to no taper on race gas. I will be pushing it more this summer after I get my new injectors. |
How about on my 03 Evo, whats the max boost I should run??? Also I live in Houston which has 93 octane and in the summer its an average of 90-100 Degrees. Here are the mods I have and will have:
K&N Cone Filter Hallman Pro RX BC HKS SSQV BOV Espelir 3" DP Invidia 3" Test Pipe APS 3" Cat-back Walbro 255 Fuel Pump SAFC2 Ground Kit Defi D Boost Gauge :confused: |
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