What PSI of boost are you guys running with MEth/Alch?
Spikes up to 31psi and keeps a steady 28psi in 4th,5th and 6th gear. Maintains 20psi all the way to 8000 rpm and 23psi plus above 7000rpm.
Stock turbo,,methanol injection,number #10 nozzle,Dynoflash custom tuned on 91oct, car runs at 3100feet elevation all the time.
Carlos
Stock turbo,,methanol injection,number #10 nozzle,Dynoflash custom tuned on 91oct, car runs at 3100feet elevation all the time.
Carlos
I am currently untuned so now I run 23 psi using 60% Methanol,40% Isopropanol (70%), (that is 60% methanol/28%isopropanol/12%H2O)
The isopropanol broadens the surface cooling range of the mix (fractional vaporization) and the H2O to lower the boiling point of the mix
After I get tuned I plan to run the same concentrations but 28 psi
The isopropanol broadens the surface cooling range of the mix (fractional vaporization) and the H2O to lower the boiling point of the mix
After I get tuned I plan to run the same concentrations but 28 psi
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Correct me if I'm off but the 30 psi itself isn't going to exceed the stock headgsket/bolts limits.
But Adding timing for peak torque in conjunction with the high boost is factor in overloading it, especially with detonation.
But Adding timing for peak torque in conjunction with the high boost is factor in overloading it, especially with detonation.
Last edited by C6C6CH3vo; Jun 13, 2006 at 03:43 PM.
I would guess that at 30PSI bad things could happen at anytime. I certainly wouldn't want to run that high with stock head bolts. But if it works for some of you then by all means .... good luck. I know some people mess up the HG by doing the ARP (one at a time) stud swap. So I guess if its not broke you may not have to fix it.
Originally Posted by dubIX
I noticed everyone is running meth. What psi should I run if I want 50/50 (water/alky) or does it matter? 28psi good?
From what I gathered so far, bottom line is run whatever psi and timing you can without detonation and be a tad rich for even a little more
30psi on a boost gauge could be quite a bit off from the truth. I prefer to go off of my MAP sensor. Generally boost gauges read at least 2 psi high and then at higher boost it can get worse. My friend runs 32-33psi according to his MAP sensor, but his boost gauge reads like 37psi.
BTW I run 30-31psi on a 35R. It does drop off by 2 psi or so after the initial spike, but holds steady after that all the way to 8500rpm. These readings are from my MAP sensor so it would probably be like 33-35psi on a boost gauge depending on the quality.
BTW I run 30-31psi on a 35R. It does drop off by 2 psi or so after the initial spike, but holds steady after that all the way to 8500rpm. These readings are from my MAP sensor so it would probably be like 33-35psi on a boost gauge depending on the quality.
Last edited by fre; Jun 14, 2006 at 02:31 PM.
Originally Posted by Jeff_Jeske
I would guess that at 30PSI bad things could happen at anytime. I certainly wouldn't want to run that high with stock head bolts. But if it works for some of you then by all means .... good luck. I know some people mess up the HG by doing the ARP (one at a time) stud swap. So I guess if its not broke you may not have to fix it.
You are correct... I have heard bad things with and without stock headbolts regardless of the PSI... 10K miles later all is well, and I drive hard! I just keep my fingers crossed...