Max Boost on 92 pump
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Max Boost on 92 pump
Hey guys, I rarely post questions but thought WTF lets get some input on what i'm rolling around in my head. I am running a 9.6:1 Comp F22 that has been bored over to 89mm pistons making it an effective F23. I just got my hands on a brand new Novi 1200 and am currently running it at 12psi with the SOS 3.8" pulley. My intent was to max out the blower of course with the 3.2" pulley and its looking like even with any comp loss with the lower comp motor, I should still be seeing 16-18psi. I do tune my own car and do have a custom single or multi port water/meth injection system I can employ if I want, however I'd like to get a better sense of where you guys are at with this comp level motor with strait 92 pump? I prefer to use the water/meth for IAT cooling and safety margin, not so much max power. So whats the comfort consensus, 15psi? 20psi? Where we at... And whats the max timing you are seeing at max trq? 
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Good to know there still seems to be a safe functioning window at that pressure level on that fuel. I think I should be ok at 18-19psi then. Helps that we are SC.
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I just did the swap last week and ran it for two days and my trans let go, so I haven’t had a chance to dyno the current pressure I’m making, not that this is that important to me since its not where I plan on being for long, hints the thread topic. Looks like I am making 12psi with the 3.8" which is probably 400whp in my estimation, based on how the car felt going off of my past experience with the Novi 1000 at full tilt. From what I’ve gathered from others running the NV1200 it seems that 10-12psi puts you about 400whp on this blower. I'm hoping for 450+ maxing it out.
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That's sort of turned into a coined or blanket statement, which I get the meaning behind, but I was hoping to get a little more on specifics since I'm the guy tuning the car.
There is a point at where the place between detonation occurs and no more timing to retard, without melting down exhaust valves happens, so as you tuners know, there is a window in there where the "tune" aka timing and fuel works properly, to where there is no detonation and combustion temps are still in check, and that's what I'm looking for. Obviously that window gets smaller and smaller the more boost you make and the fuel octane isn't stable enough to keep that window broad. My fuel is 92.
It would be great if you guys could look at your map and post what your max timing advance is at your given pressure and fuel, particularly the rpm where you are making max trq, as this is where detonation would typically start to occur first. From this information I can deduct in a bit more precises fashion, on where I can safely be in that window based on my set up, rather then just my current general tuning target and using water/meth as a safety crutch. Either way I will be using it as such, but I prefer to get the tune as centered in that safe window as possible first without it.
Thanks for any input you guys can provide, it will be interesting to see
There is a point at where the place between detonation occurs and no more timing to retard, without melting down exhaust valves happens, so as you tuners know, there is a window in there where the "tune" aka timing and fuel works properly, to where there is no detonation and combustion temps are still in check, and that's what I'm looking for. Obviously that window gets smaller and smaller the more boost you make and the fuel octane isn't stable enough to keep that window broad. My fuel is 92.
It would be great if you guys could look at your map and post what your max timing advance is at your given pressure and fuel, particularly the rpm where you are making max trq, as this is where detonation would typically start to occur first. From this information I can deduct in a bit more precises fashion, on where I can safely be in that window based on my set up, rather then just my current general tuning target and using water/meth as a safety crutch. Either way I will be using it as such, but I prefer to get the tune as centered in that safe window as possible first without it.
Thanks for any input you guys can provide, it will be interesting to see
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That's sort of turned into a coined or blanket statement, which I get the meaning behind, but I was hoping to get a little more on specifics since I'm the guy tuning the car.
There is a point at where the place between detonation occurs and no more timing to retard, without melting down exhaust valves happens, so as you tuners know, there is a window in there where the "tune" aka timing and fuel works properly, to where there is no detonation and combustion temps are still in check, and that's what I'm looking for. Obviously that window gets smaller and smaller the more boost you make and the fuel octane isn't stable enough to keep that window broad. My fuel is 92.
It would be great if you guys could look at your map and post what your max timing advance is at your given pressure and fuel, particularly the rpm where you are making max trq, as this is where detonation would typically start to occur first. From this information I can deduct in a bit more precises fashion, on where I can safely be in that window based on my set up, rather then just my current general tuning target and using water/meth as a safety crutch. Either way I will be using it as such, but I prefer to get the tune as centered in that safe window as possible first without it.
Thanks for any input you guys can provide, it will be interesting to see
There is a point at where the place between detonation occurs and no more timing to retard, without melting down exhaust valves happens, so as you tuners know, there is a window in there where the "tune" aka timing and fuel works properly, to where there is no detonation and combustion temps are still in check, and that's what I'm looking for. Obviously that window gets smaller and smaller the more boost you make and the fuel octane isn't stable enough to keep that window broad. My fuel is 92.
It would be great if you guys could look at your map and post what your max timing advance is at your given pressure and fuel, particularly the rpm where you are making max trq, as this is where detonation would typically start to occur first. From this information I can deduct in a bit more precises fashion, on where I can safely be in that window based on my set up, rather then just my current general tuning target and using water/meth as a safety crutch. Either way I will be using it as such, but I prefer to get the tune as centered in that safe window as possible first without it.
Thanks for any input you guys can provide, it will be interesting to see
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