TRD S/C is not available!!!
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From: Gone
Originally Posted by SilverRSXJezus
Originally Posted by engifineer
^^ The octane has nothing to do with running richer.
Octane has a higher resistance to pre-ignition than Heptane. So 87 octane is 87% octane, 13% heptane. This only changes the way it burns by resisting ignition until the spark is there. It also should theoretically create a quick burn since none of the fuel is burning ahead of time. However, as mentioned this effect is small. But high octane is in no way cleaner or "richer".
Octane has a higher resistance to pre-ignition than Heptane. So 87 octane is 87% octane, 13% heptane. This only changes the way it burns by resisting ignition until the spark is there. It also should theoretically create a quick burn since none of the fuel is burning ahead of time. However, as mentioned this effect is small. But high octane is in no way cleaner or "richer".
Since higher octane is higher resistance to pre-ignition, won't that affect the amount of fuel that's actually used up in the combustion? We know that not 100% of the fuel is actually burned, but is it possible that by using a higher octane than necessary, it might not burn as easily? Thanks in advance
FWIW, n-octane has a RON of -18 and a MON of -16 (yes, they are negative), and heptane is defined at 0 RON and 0 MON..you must be thinking of iso-octane or most correctly - 2,2,4-trimethyl pentane.
SilverRSXJesus - resistance to pre-ignition has nothing to do with the air/fuel ratio, unless you are attempting to solve your lack of detonation resistance by running rich. You can attempt to do this, but there are lots of good scientific reasons it doesn't work, and as you correctly stated, is incredibly inefficient. You'd be way ahead to use water/methanol injection to correct for poor fuel than to ever consider running rich, assuming you are not inclined to do the necessary mechanical work to correct an autoignition problem.
Here's the real answer to the question from the Gasoline FAQ, section 6:
The antiknock ability is related to the "autoignition temperature" of the hydrocarbons. Antiknock ability is _not_ substantially related to:-
1. The energy content of fuel, this should be obvious, as oxygenates have lower energy contents, but high octanes.
2. The flame speed of the conventionally ignited mixture, this should be evident from the similarities of the two reference hydrocarbons. Although flame speed does play a minor part, there are many other factors that are far more important. ( such as compression ratio, stoichiometry, combustion chamber shape, chemical structure of the fuel, presence of antiknock additives, number and position of spark plugs, turbulence etc.) Flame speed does not correlate with octane.
1. The energy content of fuel, this should be obvious, as oxygenates have lower energy contents, but high octanes.
2. The flame speed of the conventionally ignited mixture, this should be evident from the similarities of the two reference hydrocarbons. Although flame speed does play a minor part, there are many other factors that are far more important. ( such as compression ratio, stoichiometry, combustion chamber shape, chemical structure of the fuel, presence of antiknock additives, number and position of spark plugs, turbulence etc.) Flame speed does not correlate with octane.
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im purchasing it before its available and then purchasing the kit later... heck the sooner the payment for it goes in, the sooner i can be assured that it won't take 2 months like it did for my TRD springs!
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Originally Posted by lo_bux_racer
SilverRSXJesus - resistance to pre-ignition has nothing to do with the air/fuel ratio, unless you are attempting to solve your lack of detonation resistance by running rich. You can attempt to do this, but there are lots of good scientific reasons it doesn't work, and as you correctly stated, is incredibly inefficient. You'd be way ahead to use water/methanol injection to correct for poor fuel than to ever consider running rich, assuming you are not inclined to do the necessary mechanical work to correct an autoignition problem.
Here's the real answer to the question from the Gasoline FAQ, section 6:
The antiknock ability is related to the "autoignition temperature" of the hydrocarbons. Antiknock ability is _not_ substantially related to:-
1. The energy content of fuel, this should be obvious, as oxygenates have lower energy contents, but high octanes.
2. The flame speed of the conventionally ignited mixture, this should be evident from the similarities of the two reference hydrocarbons. Although flame speed does play a minor part, there are many other factors that are far more important. ( such as compression ratio, stoichiometry, combustion chamber shape, chemical structure of the fuel, presence of antiknock additives, number and position of spark plugs, turbulence etc.) Flame speed does not correlate with octane.
1. The energy content of fuel, this should be obvious, as oxygenates have lower energy contents, but high octanes.
2. The flame speed of the conventionally ignited mixture, this should be evident from the similarities of the two reference hydrocarbons. Although flame speed does play a minor part, there are many other factors that are far more important. ( such as compression ratio, stoichiometry, combustion chamber shape, chemical structure of the fuel, presence of antiknock additives, number and position of spark plugs, turbulence etc.) Flame speed does not correlate with octane.
By the way...what's this Gasoline FAQ you are referring to? Is this something online, or like a book? I'd like to read up on that sometime...
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From: Gone
It's linked here. I hope you remember your organic chemistry, it's not a casual read at all, but if you can get through it, you'll be able to understand a lot of fuel related issues.
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Re: TRD S/C is not available!!!
Originally Posted by PeruzziScion
I dont know why people keep talking about this all the time and start new rumors on the forums. As of right now the TRD Supercharger is not available for order in the Toyota Parts ordering system! Its not there and I gaurantee that to be a fact. Anyone who wants to say otherwise please provide me with a part # and I will take it to my parts manager to verify.
I will check with Parts Dept. again on Monday to check on the rumored Oct. 10th release date. I wouldnt get too hopeful though. Its not going to be available then either...
...Im sure you all hate me now and are gonna light me up like a dry christmas tree with faulty lights. Sorry.
I will check with Parts Dept. again on Monday to check on the rumored Oct. 10th release date. I wouldnt get too hopeful though. Its not going to be available then either...
...Im sure you all hate me now and are gonna light me up like a dry christmas tree with faulty lights. Sorry.
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Scikotics
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From: Nor-Cal Scikotics
Originally Posted by Simplyscion
I think he was thought it was funny cause the guy said that there is no part number then you came out w/ a part number to correct him...dont worry...hes on your side..I think 
Re: TRD S/C is not available!!!
Originally Posted by PeruzziScion
I dont know why people keep talking about this all the time and start new rumors on the forums. As of right now the TRD Supercharger is not available for order in the Toyota Parts ordering system! Its not there and I gaurantee that to be a fact. Anyone who wants to say otherwise please provide me with a part # and I will take it to my parts manager to verify.
I will check with Parts Dept. again on Monday to check on the rumored Oct. 10th release date. I wouldnt get too hopeful though. Its not going to be available then either...
...Im sure you all hate me now and are gonna light me up like a dry christmas tree with faulty lights. Sorry.
I will check with Parts Dept. again on Monday to check on the rumored Oct. 10th release date. I wouldnt get too hopeful though. Its not going to be available then either...
...Im sure you all hate me now and are gonna light me up like a dry christmas tree with faulty lights. Sorry.
Ken
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KAD
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From: Tampa, FL
WOW! WTH!
So technicaly what that link up there somewhere in the thread is doing is taking pre orders on something that is not epa or what ever you call it approved yet!
Nope not quiet yet!
Be patient is what we all need to do... Yes I know that is hard for some of you!
So technicaly what that link up there somewhere in the thread is doing is taking pre orders on something that is not epa or what ever you call it approved yet!
Nope not quiet yet!
Be patient is what we all need to do... Yes I know that is hard for some of you!
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From: North Royalton, OH
Originally Posted by zoltiz
Up to 200 horsepower.
• Up to a 25% increase in peak horsepower.
• Up to 13% increase in maximum torque.
those are some weak numbers...everyone who orders the supercharger, have fun with it, i will not be ordering it, now that those are the official numbers
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From: Myrtle Beach, SC
Originally Posted by ScionEyes
WOW! WTH!
So technicaly what that link up there somewhere in the thread is doing is taking pre orders on something that is not epa or what ever you call it approved yet!
Nope not quiet yet!
Be patient is what we all need to do... Yes I know that is hard for some of you!
So technicaly what that link up there somewhere in the thread is doing is taking pre orders on something that is not epa or what ever you call it approved yet!
Nope not quiet yet!
Be patient is what we all need to do... Yes I know that is hard for some of you!
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Defined3
Scikotics
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From: Essex County, NJ
well, 2 things are now official thanks to the TRD website... the supercharger will not have a short ram intake (as i have seen in some pics) and you cannot finance it with your car
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KAD
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according to set we can not get it yet as the dealer.. we had one down here but they took it back. all i know is someone actually gets it, there is a 500$ tool that is needed to be able to put it in...
Oh well when it happens I will then believe...
Until then S/C less!
Oh well when it happens I will then believe...
Until then S/C less!
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From: Columbus, OH
Originally Posted by jboogz
Originally Posted by smash
am i mistaken or wouldn't the addition of a S/C (or a turbo for that matter) require one to use 93 octane gas? i dont know about any of you.. but i'm now broke, have no money for the S/C, can't refinance my car cuz my credit union dicked me over, and i know for a fact that i can't afford to pay for 93 octane gas at this point (it's averaging $3.50 here right now.. but i'm certain it'll be nearly 4 by december if analysts are correct)...and not to mention gas mileage would go down with the addition of a Supercharger or turbo? just a thought. correct me if i'm wrong i don't know a ton about these things but that's the impression i've been given.
Can't afford supere huh well did you realize that the higher the octane the better it will burn & the cleaner it will burn. This in turn will give you better MPG. I tried to run regular in my car once and it ran like $hit and got horrible gas mileage. Anyway my point is you are better off spending .20 cents more a gallon becasue your car will run better, cleaner, & more efficient. What's it going ot cost you? an extra $3 everytime you fill up. Thats nothing compared to the benefits. SO in effect you're still spending the same ammount.
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From: Dirty South!!
Originally Posted by emiller
Originally Posted by jboogz
Originally Posted by smash
am i mistaken or wouldn't the addition of a S/C (or a turbo for that matter) require one to use 93 octane gas? i dont know about any of you.. but i'm now broke, have no money for the S/C, can't refinance my car cuz my credit union dicked me over, and i know for a fact that i can't afford to pay for 93 octane gas at this point (it's averaging $3.50 here right now.. but i'm certain it'll be nearly 4 by december if analysts are correct)...and not to mention gas mileage would go down with the addition of a Supercharger or turbo? just a thought. correct me if i'm wrong i don't know a ton about these things but that's the impression i've been given.
Can't afford supere huh well did you realize that the higher the octane the better it will burn & the cleaner it will burn. This in turn will give you better MPG. I tried to run regular in my car once and it ran like $hit and got horrible gas mileage. Anyway my point is you are better off spending .20 cents more a gallon becasue your car will run better, cleaner, & more efficient. What's it going ot cost you? an extra $3 everytime you fill up. Thats nothing compared to the benefits. SO in effect you're still spending the same ammount.
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