just curious but at what psi should you decide to run race gas and not 93 pump gas?

 

its not psi but horsepower. i would say the limits of pump gas is reached around 500hp or so.. someone correct me if im wrong.

 

That's BEYOND an open question. I'm sure by now with the number of posts that you've had here, you know VERY well that is dependant upon ALL the factors of the turbo system and engine, management , and tuner..

 

ok, well i guess you are right about that. people make insane power on pump gas, but some people dont like to run more than 14-15psi on pump gas for some reason. i guess that is whree i got my question from.

 

well, some people are worried about higher boost levels on pump gas. remember the more you compress air the hotter it gets. and at a point detonation can start occuring. its a valid question, just a little open ended

 

i guess that is how i came upon my question because i know that some turbos make more power at a given boost level, but i know that there is a point where the cylinder pressure will get to the point of any little thing could make the motor pre ignite and fail or detonate. and that is where race gas comes in to help save the day.

 

Not being mean but this question can go any way....a lot of thinks are factors of when you should run race gas instead of pump like for instance how much power you want to make and how safe...and what your compression ratio is...Like I said there are so many things...

 

compression, power, timing, injector sizing, A/f, soo many factors. So just rock c16 247 like me!!! Nothing like the smell of race gas in the morning, thats what i always say.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TheShodan &raquo;</TD></TR><TR><TD CLASS="quote">That's BEYOND an open question. I'm sure by now with the number of posts that you've had here, you know VERY well that is dependant upon ALL the factors of the turbo system and engine, management , and tuner..</TD></TR></TABLE>

fully agreed! Nothing more to add

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ls1 FD3s &raquo;</TD></TR><TR><TD CLASS="quote">compression, power, timing, injector sizing, A/f, soo many factors. So just rock c16 247 like me!!! Nothing like the smell of race gas in the morning, thats what i always say. </TD></TR></TABLE>

you really shouldn't run higher octane then needed. You can get preignition because the slower burn will leave residual unburnt heated gas and when you recompress...boom you get that variatipon of detonation called preignition. Only run the octane suited to your car IE..turbo, HP, IC size, etc etc etc

 

i was semi serious. I use a 50/50 mix of 93/100,

 

Just because you use race gas, doesn't necessarily mean it's "high octane". For instance, VP Race Fuel makes almost 70 different types of race fuel. Some are high octane, some are not. Some are oxygenated. Some are not. Some are leaded. Some are not. Some are for cars, bikes, boats, planes, dragsters, streetbikes, dirtbikes, 2-strokes, 4-strokes, high compression, lower compression, turbo-charged, aluminum head, NOS, etc. etc.... Stock motor? Highly modified motor? Many different types of "race fuel" for all types of applications.

There are many drivers/riders who can benefit from running VP race fuel. If you want a fuel that is always consistent and always clean and always exact for your application, VP is the way to go.

Or you can just buy pump gas from any old gas station and shoot craps too. Their large fuel tanks often are dirty with a mixture of stale fuel and fresh fuel. Formulations that are so generic that your high performance vehicle is running something that some plain old sedan is also running.

So are the trucks that deliver the fuel. Dirty with old and new fuel mixed in.

So, who knows what's floating around in those tanks. Sea Monsters maybe?

If you want top notch fuel for your top notch car, consider VP fuel. Especially if you are doing any drag racing, autocross, rally, etc. etc.

Dave Harris
Atlanta, GA

 

what are you the spokesperson for vp?

 

No the spokesman for that "old gas station"

 

No **** right? expletive vp gas

 

use high octane race gas when you have a problem with detonation on pump gas.