Moon Assad

Sounds like a parade. The whole point of going to a race track is to drive the **** out of your car!!!

I was watching the dakar a few weeks ago, it must have been an ould one but id seen the robbie Gordon had almost gotten red flagged for a rig he had on his Hummer. It seems that somehow he tied the tire inflation system into his intake. Id imagine he would use it to fill his tires to capacity and use the deflation system to provide boost when he needed it. Very very ingeniously done.

olddragger

iTrader: (3)

he probably was inflating his tires with nitrous:0

Moon Assad

Na, it had a tire inflation system, probly one like the real hummers have. You dont find nitrous in the middle of the Paris Dakar rally. Its 5000 miles of bumfuck.

Moon Assad

Think about it. If those big *** tires are inflated to say 100psi. Figure out how to supply a metered amount of flow into the intake, even at a high rate for a short period (15 to 30 seconds) you could make some serios power to climb a monster dune or pass another vehicle. Hit the switch and go from 500 hp to 800+ hp. Then when your cruising on flat or dont need crazy power your pumping the tirers back up.

slvrstreak

iTrader: (3)

but when your tires are fully inflated where does the excess air go...BOV?

Rote8

Unless you carry it in the tires....

slvrstreak

iTrader: (3)

but once it's used in the intake you can't recycle it back to the tires...now THAT would be ingenious

Moon Assad

Na, the compresser shuts off. If you use nitrous it would be gone the first time you hit it. It might dilute it after the tire compressor kicks in to refill the tires. Then you would have to retune to make up for less nitrous and more air. The reason they flaged him is your not supposed to have FI.

Rote8

Use the exhaust to inflate the tires.

olddragger

iTrader: (3)

sounds like a smokey Y trick!

DarkHelmet

iTrader: (1)

so is this kit ever guna come back out for the older models? i have an 04 and did a little searching couldnt find any =( so sad i want it too late haha

california style

if current developments work out, it should be available again yes Dark Helmet (good name btw!)

Rote8

Never too late...

slvrstreak

iTrader: (3)

Let's see if we can start up a debate
What mix are most of you guys running for the track vs. street?
xylene? toluene? octane booster? heavier premix?
I understand the need for higher octane, sure
more resistance to detonation and higher energy...makes sense but, what effect will a change in mix really have? especially since we are only tuned for 93
I run 1oz/4gal on street and 1oz/gal at any event I go to where I know I will be pushing the car hard
If anything I think I will try a xylene mix at the next few events
not so sure I buy into these higher octanes...yet...

https://www.rx8club.com/series-i-tech-garage-22/octane-booster-info-questions-6479/
good read on octane if any of you havent seen it

Moon Assad

Save your cash and be ready to jump on it when the time comes.

olddragger

iTrader: (3)

Ok Levi since you are my "bud" and all, I am going to give you a break "Noob" lol

Ocatne---that discussion can get really complicated. So in not overthinking it, it boils down to this. For tracking---DONT TRUST THE GAS YOU BUY AT A SERVICE STATION. You never know what is going in the tank--it may be 4% ethanol--it may be 15% ethanol. I have tested several stations in Macon and found a varience of 4-11%. Ethanol is what gives gas now a days it's octane boost. That 93 octane you are buying will not be 93 octane without the ethanol. Ok got that?
For street driving--we are ok tuned for 93 because we dont do the high loads in the higher gears --or we shouldnt anyway. 1st and 2nd gears spool up so fast lower octane can be tolerated. On track its much different--higher charge temps, higher engine temps and high loads in the higher gears makes detonation much more likely to occur--if there is a small problem. Still on the street I would be mindful of driving hard with out some "insurance".
I never drive hard on the street.
Now there are several options in getting higher octane.
1- buy race gas--really not an option for me--too much to carry and the gas at the tracks is questionable at times+ expensive.
2- xylene etc--it works--availability has become harder and the price has skyrocketed since all the meth labs started forming--damn druggies. You also would have to carry several gallons with you to a track event.
3- MMT--- this is the ingrediant that is in most of the over the counter "ocatane boosters" that you see on the selfs. Trouble is they dont have enough of it in the can. They only raise the octane a few tenths of a point. ONE EXCEPTION---Torco. It has a much higher amount of MMT and it has been tested objectively and found to work as claimed. Kenne Bell and others say its the only MMT booster to use . It has been around for a while--no bad things said about it. You only have to use 16-32 ozs per tank depending on what octane you want. So easy to use and easy to carry. I wouldnt use it ALL the time for street driving.
I use the Torco.

Pre mix--- forced induction doesnt really like oil in the combustion chamber. But, we do need to pre mix. I did figure out what % of oil/gas was actually in my combustion chamber when I was pre mixing 1oz per gallon ( track days only). I use about 1 quart of oil through the omp per full tank of gas on the track. That plus 1 oz per gallon of pre mix gave me a ratio of 50:1. I thought that was too much and I have cut back to street level pre mix for the track. I either use Pettits pre mix or Motul 710 or 800 2 stroke oil. I guess to each his own here--I dont think there is any hard evidence anywhere about the differences between 200:1, 100:1 or even 50:1.
All these are my little opinons--so take them for what it is worth too ya.
Get your butt ready for tracking biatch!!!! Hope you drive better on the track than in video games.

hey Moon-- I just installed a 75MM throttle body---it does make a difference But the throttle is now VERY sensitive. I need to modify the inputs at some point.

slvrstreak

iTrader: (3)

makes plenty of sense Denny and I will definitely be using it for that extra "insurance"
still curious as to what everyone else uses
no doubt that higher octane should be used but, mainly wondering what would would be the "best" mix for our tune

olddragger

iTrader: (3)

Juan blends race gas with pump gas. He only tracks at a local track and does only 1 day a w/e. He also depends somewhat on the water methanol system he has. Galen I believes uses Torco also?? Not absoulutely sure. I dont know what the turbo boys use.
Maybe a thread needs to be started in the Racing section?

slvrstreak

iTrader: (3)

Ah, W/M system...another thing to factor in
I would think the turbo guys go even more extreme considering their higher boost
I haven't found a thread with anything similar

olddragger

iTrader: (3)

we really only use the w/m system to cool the intake charge temps during tracking or high load driving.
its also REAL good at keeping the internals clean.
I dont think anyone has jetted theirs to the point in which it does a lot for the octane.

Guys I just did a back yard job and bored out my TB to 75MM. I dont have a different butterfly--yet so it does have that narrowing around it--but it did make an easily felt difference in the mid-high range. The go pedal has gotten REAL sensitive--as expected. I can change that with the cobb--but right now I am enjoying it.
Its a change that is felt even without going into boost. Its just logical--no secrets here
I am pursuing getting a bigger butterfly also..

Rote8

Twin 62mm TB?

Rote8

Nitro-methane / Methanol mix works wonders in a W/M system, if everything is resistant to corrosion.
It DOES change the lamda,,,,

Galen Darkmoon

OD talked me into 5gal of 100 octane per tank on track days also, I use not quite 1oz per gal of protek premix oil too. Someone on this site in another thread posted this web page showing all the pure fuel stations in the US. About the same price or a few pennies more than normal.
The 8 loves ethanol free fuel.
http://pure-gas.org/

Non ethanol gas. nom nom nom

Phil's 8

iTrader: (3)

I seem to be having an ongoing problem with injectors. If you don't mind me asking, what size/color do you guys with Pettit s/c use?

olddragger

iTrader: (3)

I use the oems with uncapped yellows in the p2 spot ( the middle set cant remember if that is p1 or p2 lol ). I am getting 85-88% useage out of them with approx 300rwhp at 9K.
Driveability and warm up is great. I also run the s2 fuel pump. Its been solid--knock on wood.