For those who have doubt in the Vortech kit please read.

[jamesm]

Originally Posted by Foobar

You just need to reflash to a pumpgas compatible tune - no need to swap pulleys out just to go back to pumpgas.

There is apparently little gain to be had using the smaller pulley with pumpgas, but that's not to say it doesn't work with it.

How is that possible? Does it just pull a ton of timing? You'd think it would knock at the higher boost on 93.

[DJCarbine]

Originally Posted by pheoxs

Better option is to use a constant speed drive between the crank and the supercharger. That would allow you to run the supercharger at max rpm at any engine speed...

I think the addition of that level of complexity would make the cost of a supercharger skyrocket, not to mention I don't think there is anything that would survive the wear/tear of constantly adjusting the slip amount....

In theory it would be great, just like in theory a CVT transmission could keep an engine at the RPM in which it produces the most power, but I don't think there are any CVTs that could survive that and be reliable

[pheoxs]

Originally Posted by DJCarbine

I think the addition of that level of complexity would make the cost of a supercharger skyrocket, not to mention I don't think there is anything that would survive the wear/tear of constantly adjusting the slip amount....

In theory it would be great, just like in theory a CVT transmission could keep an engine at the RPM in which it produces the most power, but I don't think there are any CVTs that could survive that and be reliable

http://www.fallbrooktech.com/accesso...s/supercharger

Sent from my Nexus 4 using Tapatalk 2

[Darren Orange]

Originally Posted by sw20kosh

This is terribly wrong.

E85 is not equal to 94-96 octane. lol

Did you read the rest of the thread bro? Because you are right it is wrong it's more like 105, but if you knew that I figure you would have said it like the other kind forum goer did.

[s2d4]

Originally Posted by Darren Orange

The reason for E85 to have "less power" is because of the crazy high octane.

This makes no sense.

Originally Posted by Darren Orange

E85 is normally about 15% cheaper plus the difference from having to run 91 or greater octane anyway with the car and you wind up with pretty much the difference.

Even so, you need to run 25-35% more with E85 so 15% cheaper doesn't make it even.

In any case, I just found it odd for you to list those statements as facts when your wiki copy/paste contradicts what you are saying.

Originally Posted by Darren Orange

Did you read the rest of the thread bro? Because you are right it is wrong it's more like 105, but if you knew that I figure you would have said it like the other kind forum goer did.

At least he has been right all along.

[sw20kosh]

Originally Posted by Darren Orange

Did you read the rest of the thread bro? Because you are right it is wrong it's more like 105, but if you knew that I figure you would have said it like the other kind forum goer did.

Why would I say it if someone else did already? It is redundant bro.

[Hawaiian]

Originally Posted by s2d4

This makes no sense.


Even so, you need to run 25-35% more with E85 so 15% cheaper doesn't make it even.

In any case, I just found it odd for you to list those statements as facts when your wiki copy/paste contradicts what you are saying.


At least he has been right all along.

Originally Posted by sw20kosh

Why would I say it if someone else did already? It is redundant bro.

Both of you.. don't feed the Troll...

I was going to correct him with the fact that pure Ethanol is 113 octane, and then start throwing math at him showing e85 can vary based what, and how much of it is blended. The 105 octane is based usually on the lowest rating that that pump will have (e70) while true e85 is actually closer to 109 octane... but that would have blown his last remaining brain cell.

[s2d4]

Originally Posted by Hawaiian

I was going to correct him with the fact that pure Ethanol is 113 octane, and then start throwing math at him showing e85 can vary based what, and how much of it is blended. The 105 octane is based usually on the lowest rating that that pump will have (e70) while true e85 is actually closer to 109 octane... but that would have blown his last remaining brain cell.

EDIT: Point taken.

[Darren Orange]

Originally Posted by Hawaiian

Both of you.. don't feed the Troll...

I was going to correct him with the fact that pure Ethanol is 113 octane, and then start throwing math at him showing e85 can vary based what, and how much of it is blended. The 105 octane is based usually on the lowest rating that that pump will have (e70) while true e85 is actually closer to 109 octane... but that would have blown his last remaining brain cell.

Who is the Troll? People making snide comments seem to be the root of the Troll. If something is wrong respectfully correct it or maybe send some facts that persons way.

It's as if people on here want a reason to start a flame war. It would be helpful if people read the whole forum rather than post randomly just to make a snide comment with no useful information.

I'm sorry but I see you guys Trolling me even you Hawaiian. Personal insults are not acceptable either grow up.

[Hawaiian]

Originally Posted by Darren Orange

Who is the Troll? People making snide comments seem to be the root of the Troll. If something is wrong respectfully correct it or maybe send some facts that persons way.

It's as if people on here want a reason to start a flame war. It would be helpful if people read the whole forum rather than post randomly just to make a snide comment with no useful information.

I'm sorry but I see you guys Trolling me even you Hawaiian. Personal insults are not acceptable either grow up.

I'm sorry for not continuing an off topic conversation about E85 in a thread about a Vortech supercharger... My apologies. Here's the breakdown. Ethanol is blended with gas (specifically 87 octane) to make e85. Like most fuels it will use a summer, and winter blend, but rather than changing the blend to butane in the winter, they use less Ethanol cutting it all the way down to 68% Ethanol in some cases. So what you get is a blend ranging from (113*.68+87*.32) 104.68 octane in the winter months to (113*.85+87*.15) 109.1 octane, and since changing the sticker every time they change the blend (not to mention all the fractional blending that occurs in the ground tank) would be a major PITA, they simply list the lowest possible octane that it could be, hence the 105 octane listed on most pumps.

Now to continue your off topic comments, your contention is that there is no cost difference between buying pump gas, and E85. That is actually Close to true, but not completely accurate. It depends entirely on the cost of gas at the pump. When premium is cheap, it's more cost effective to run 93, but when the cost of gas goes up, it's better to run E85.

Originally Posted by Darren Orange

Did you read the rest of the thread bro? Because you are right it is wrong it's more like 105, but if you knew that I figure you would have said it like the other kind forum goer did.

This is kindof a trolling comment...

[Darren Orange]

I don't think its completely off topic to discuss the implication of using E85 to gain the performance we see here. I know its been a point of contention as to weather or not its a good idea from both a cost, practical and long term(impact on motor).

It seems like its reasonable to say that if your goal is maximum performance with this supercharger(or any system out there) the most cost effective and strait forward fuel choice seems to be E85.

I think it certainly is different for everyone involved due to location etc and how available it is. Then again I am looking at this from the perspective as a track car not a daily drive, so there are a lot of choices here. Either way I seriously dig the power its putting out and personally from experience in the most basic of setups I find a supercharger to be a more fun daily driver(which I would not use this car for). I like the idea of having some gusto without being in the 5K plus range like you have to do with S2Ks.

[NorseLegend]

Anyone have any guesstimates of what the 12psi SC would be running on say... 91oct?

I know we wouldn't see 365, but would ~300whp be at all feasible, even like 10-20whp more or less than 300??

[sw20kosh]

Originally Posted by NorseLegend

Anyone have any guesstimates of what the 12psi SC would be running on say... 91oct?

I know we wouldn't see 365, but would ~300whp be at all feasible, even like 10-20whp more or less than 300??

Cant say for certain but all signs leads me to believe ~250-260 whp is the limit of this kit on pump gas with a full exhaust (especially 91 octane). The high compression engine is ignition timing limited at these boost pressures with pump gas.

Another thing to think about is a supercharger consumes HP to operate. When doing these dyno pulls I wouldn't be surprised if this SC is consuming 20-40 whp to generate the 250 whp we have been seeing. Decently sized Turbo kits seem to be maxing out at ~300 whp on pump fuel. 300 - 40 = 260 whp. This is an incredibly simplistic view of the situation but the theory holds true. A properly sized turbo (or a gigantic one) will always make more power than a supercharger due to parasitic loses.

[NorseLegend]

Originally Posted by sw20kosh

Cant say for certain but all signs leads me to believe ~250-260 whp is the limit of this kit on pump gas with a full exhaust (especially 91 octane). The high compression engine is ignition timing limited at these boost pressures with pump gas.

Another thing to think about is a supercharger consumes HP to operate. When doing these dyno pulls I wouldn't be surprised if this SC is consuming 20-40 whp to generate the 250 whp we have been seeing. Decently sized Turbo kits seem to be maxing out at ~300 whp on pump fuel. 300 - 40 = 260 whp. This is an incredibly simplistic view of the situation but the theory holds true. A properly sized turbo (or a gigantic one) will always make more power than a supercharger due to parasitic loses.

Oh well. I was hoping to see some changes from the SC kits, but that's cool. I'm still a while off anyway.