Has technology made it possible to race 500HP EVO Safely?
#1
Has technology made it possible to race 500HP EVO Safely?
Limiting this discussion to just the motor:
Any veteran of road racing knows 300awhp used to be plenty for a 20 minute session or made for a great competition car. Seems like today, cars start at 500hp. If doing DE's or fun track days, the HP numbers are even greater. Has technology finally given us EVO guys the ability to run 500+HP cars safely for 20-25 minute sessions?
If you have a built motor with all the right parts, is it worth it to just have 400hp? For the same crazy built motor and all the right parts, why not trust in the build? Or is it impossible still today for parts to last? Is longevity possible at high HP levels? Which at some point begs the question....why do more than bolt-ons and throw away replacement parts?
For me, I'm already in the no return category of stupid money growing on trees.
As a competitor in any type of event, I don't think the old 400HP ceiling applies to winning anymore. J
What you guys say?
Any veteran of road racing knows 300awhp used to be plenty for a 20 minute session or made for a great competition car. Seems like today, cars start at 500hp. If doing DE's or fun track days, the HP numbers are even greater. Has technology finally given us EVO guys the ability to run 500+HP cars safely for 20-25 minute sessions?
If you have a built motor with all the right parts, is it worth it to just have 400hp? For the same crazy built motor and all the right parts, why not trust in the build? Or is it impossible still today for parts to last? Is longevity possible at high HP levels? Which at some point begs the question....why do more than bolt-ons and throw away replacement parts?
For me, I'm already in the no return category of stupid money growing on trees.
As a competitor in any type of event, I don't think the old 400HP ceiling applies to winning anymore. J
What you guys say?
#2
Evolved Member
iTrader: (22)
Is it 500HP or 500WHP? What about the WTQ? Cause I believe if you keep the WTQ sub 400 you can have the WHP above 500 but that doesn't seem how you'd want it right? Also how many sessions would you want it to hold up reliably? And what do you consider reliable?
I've kept my car in the low 300s WHP not only cause I don't push it as is, but really I like being able to drive to the HPDE, get in 4-5 sessions without doing more than adding a few fluids there and drive it back home all on regular pump gas (Which it's done for years except last year when an 12 year old OEM coolant hose finally gave up). That would define reliable for me.
I've kept my car in the low 300s WHP not only cause I don't push it as is, but really I like being able to drive to the HPDE, get in 4-5 sessions without doing more than adding a few fluids there and drive it back home all on regular pump gas (Which it's done for years except last year when an 12 year old OEM coolant hose finally gave up). That would define reliable for me.
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Driv200 (Nov 24, 2017)
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Driv200 (Nov 24, 2017)
#4
Codgi: It's 500WHP or more and same with TQ. Dedicated track day car, but street legal too. My interest is to hear feedback on building a race motor correctly with todays technology and longevity possibilities. Is technology and imporvements in parts today offering more than they were in the mid 2000's.
EVO8LTW: Your thread asked what horsepower to run safely...detuned. Good question. Your thread prompted me to ask the opposite....can we stop limiting our horsepower and actually have a dependable high horsepower (500WHP+ cars) and rely on improvements and technology. Or are we stuck with the same parts and experiences of all the early EVO builds with no improvements.
Define longevity: Spend your wad and don't expect to rebuild your motor in 5 years no matter what you throw at it on 500WHP+ ....NASA, OPTIMA, HILL CLIMB, AX....
Thank you for post
EVO8LTW: Your thread asked what horsepower to run safely...detuned. Good question. Your thread prompted me to ask the opposite....can we stop limiting our horsepower and actually have a dependable high horsepower (500WHP+ cars) and rely on improvements and technology. Or are we stuck with the same parts and experiences of all the early EVO builds with no improvements.
Define longevity: Spend your wad and don't expect to rebuild your motor in 5 years no matter what you throw at it on 500WHP+ ....NASA, OPTIMA, HILL CLIMB, AX....
Thank you for post
Last edited by Driv200; Nov 22, 2017 at 06:29 AM. Reason: correction
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Driv200 (Nov 24, 2017)
#6
EvoM Guru
iTrader: (1)
With proper tuning, and cooling (oil cooler, radiator) it'll be fine at that level. You'll want to monitor trans temp, and get a cooler for that as well if it needs it.
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Driv200 (Nov 24, 2017)
#7
EvoM Guru
iTrader: (1)
Oiling and Heat are the only things limiting you from running 500hp. Thats a lot of heat generated in both air volume through the IC to cool and heat to shed from oil/coolant. Will definitely need some thoughtful work on radiator shrouding and upgraded oil cooling.
Also, as discussed in the oil pressure thread, 500hp will definitely need oiling improvements. There are plenty of options and details to be done for improving this though. Crank scrapers, OFH porting, Oil return porting, Crankcase evac, etc.. But the most important thing would be a proper dry sump.
Im sure you could get away with an expanded wet sump pan and perhaps a open accusump but if you want to know the oil is getting where it needs to be a dry sump is cheaper than a new motor.
Also, as discussed in the oil pressure thread, 500hp will definitely need oiling improvements. There are plenty of options and details to be done for improving this though. Crank scrapers, OFH porting, Oil return porting, Crankcase evac, etc.. But the most important thing would be a proper dry sump.
Im sure you could get away with an expanded wet sump pan and perhaps a open accusump but if you want to know the oil is getting where it needs to be a dry sump is cheaper than a new motor.
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Driv200 (Nov 24, 2017)
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#8
EvoM Guru
iTrader: (6)
The problem with oil cooling is directing enough air at/through the oilcooler. If you have it mounted in the front of the car, ideally there should be some shroud or air guides to channel the air through it and not around it.
Also with more power, more brake wear is inevitable. So track pads, rotors, and air guides should be included. Unless you are just talking about the motor? But each system for the most part will have more strain as the power goes up.
Also with more power, more brake wear is inevitable. So track pads, rotors, and air guides should be included. Unless you are just talking about the motor? But each system for the most part will have more strain as the power goes up.
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Driv200 (Nov 24, 2017)
#10
EvoM Guru
iTrader: (1)
Originally Posted by EVO8LTW
This may be a dumb question, but why does more HP require more oiling improvements? I would have thought that cornering forces were the issue for oiling, not HP. Or are you thinking that the motor can deal better with partial starvation if it isn't pushing as much power?
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Driv200 (Nov 24, 2017)
#11
Evolved Member
iTrader: (22)
Codgi: It's 500WHP or more and same with TQ. Dedicated track day car, but street legal too. My interest is to hear feedback on building a race motor correctly with todays technology and longevity possibilities. Is technology and imporvements in parts today offering more than they were in the mid 2000's.
EVO8LTW: Your thread asked what horsepower to run safely...detuned. Good question. Your thread prompted me to ask the opposite....can we stop limiting our horsepower and actually have a dependable high horsepower (500WHP+ cars) and rely on improvements and technology. Or are we stuck with the same parts and experiences of all the early EVO builds with no improvements.
Define longevity: Spend your wad and don't expect to rebuild your motor in 5 years no matter what you throw at it on 500WHP+ ....NASA, OPTIMA, HILL CLIMB, AX....
Thank you for post
EVO8LTW: Your thread asked what horsepower to run safely...detuned. Good question. Your thread prompted me to ask the opposite....can we stop limiting our horsepower and actually have a dependable high horsepower (500WHP+ cars) and rely on improvements and technology. Or are we stuck with the same parts and experiences of all the early EVO builds with no improvements.
Define longevity: Spend your wad and don't expect to rebuild your motor in 5 years no matter what you throw at it on 500WHP+ ....NASA, OPTIMA, HILL CLIMB, AX....
Thank you for post
The following users liked this post:
Driv200 (Nov 24, 2017)
#14
EvoM Guru
iTrader: (1)
This may be a dumb question, but why does more HP require more oiling improvements? I would have thought that cornering forces were the issue for oiling, not HP. Or are you thinking that the motor can deal better with partial starvation if it isn't pushing as much power?