will the stock pump work??
Thread Starter
Drifting
Joined: Sep 2002
Posts: 1,642
Likes: 0
From: Suwanee,Ga
will the stock pump work??
If we put E85 in the tank, will the pump deal with it, well??
[ as opposed to blowing up and killing me?]
E85 is conductive, gas is a dielectric fluid and not conductive??
But, then the tanks plastic is and seems pretty darned Non-conductive??
Stuff is showing up conveniently in Atlanta, and it seems that we could get away with 11.5:1 compression using this stuff, and likely pass emissions?
400 Hp C4's?? not very hard to do? Real nice it it's re-power time?!!?
TJM
[ as opposed to blowing up and killing me?]
E85 is conductive, gas is a dielectric fluid and not conductive??
But, then the tanks plastic is and seems pretty darned Non-conductive??
Stuff is showing up conveniently in Atlanta, and it seems that we could get away with 11.5:1 compression using this stuff, and likely pass emissions?
400 Hp C4's?? not very hard to do? Real nice it it's re-power time?!!?
TJM
Safety Car
Joined: Sep 2010
Posts: 3,752
Likes: 190
From: Indiana PA
I'd be less worried about the pump and more worried about the corrosive nature of the ethanol on the injectors/o-rings/lines,etc....Most older cars do not like E10 much less E85. In the 90's especially after LT1 was introduced they are ok with E10. Proposals to go to E15 would by very bad unless the car was made mid-2005's or later. The fuel systems cannot handle the ethanol without side effects.
I would not be running it unless I totally converted the system to be able to handle the ethanol content of the fuel. If your running this on a stock motor w/stock ECM programming your fuel trims will probably be maxed out and still running lean. E85 requires a much richer air to fuel ratio about 9.7:1 verus 14.7 for gasoline.
Yes, E85 inherently has a higher octane rating, but you need more fuel and WILL burn more compared to gasoline for the same power. Ethanol has less energy content per unit than gasoline, so you need more. This is maybe a little offset by being able to run higher compression.
I would not be running it unless I totally converted the system to be able to handle the ethanol content of the fuel. If your running this on a stock motor w/stock ECM programming your fuel trims will probably be maxed out and still running lean. E85 requires a much richer air to fuel ratio about 9.7:1 verus 14.7 for gasoline.
Yes, E85 inherently has a higher octane rating, but you need more fuel and WILL burn more compared to gasoline for the same power. Ethanol has less energy content per unit than gasoline, so you need more. This is maybe a little offset by being able to run higher compression.
Thread Starter
Drifting
Joined: Sep 2002
Posts: 1,642
Likes: 0
From: Suwanee,Ga
I'd be less worried about the pump and more worried about the corrosive nature of the ethanol on the injectors/o-rings/lines,etc....Most older cars do not like E10 much less E85. In the 90's especially after LT1 was introduced they are ok with E10. Proposals to go to E15 would by very bad unless the car was made mid-2005's or later. The fuel systems cannot handle the ethanol without side effects.
I would not be running it unless I totally converted the system to be able to handle the ethanol content of the fuel. If your running this on a stock motor w/stock ECM programming your fuel trims will probably be maxed out and still running lean. E85 requires a much richer air to fuel ratio about 9.7:1 verus 14.7 for gasoline.
Yes, E85 inherently has a higher octane rating, but you need more fuel and WILL burn more compared to gasoline for the same power. Ethanol has less energy content per unit than gasoline, so you need more. This is maybe a little offset by being able to run higher compression.
I would not be running it unless I totally converted the system to be able to handle the ethanol content of the fuel. If your running this on a stock motor w/stock ECM programming your fuel trims will probably be maxed out and still running lean. E85 requires a much richer air to fuel ratio about 9.7:1 verus 14.7 for gasoline.
Yes, E85 inherently has a higher octane rating, but you need more fuel and WILL burn more compared to gasoline for the same power. Ethanol has less energy content per unit than gasoline, so you need more. This is maybe a little offset by being able to run higher compression.
That is the plan. it's a Track only car. The carburetor work is $300.00 to get gaskets, jetting and drilling of passages. 30% increases needed according to the experts.
Braided steel fuel lines are good, rated for methanol, so it's pretty doable.
Pumps start at $200.00, but really are methanol parts.
Pressure regulator to take 12 PSI to 6 would run $100.00
Race gas @ 110 octane is $7.75 to $10.00 a gallon. More at the track pumps.
So this pays for itself in a year.
In Atl. we always have summer blend, so the 85% Ethonal is pretty fixed.
Thanks for the input.
TJM
Race Director
Joined: Sep 2003
Posts: 16,838
Likes: 341
From: Database Error Indiana
Ive been running E85 in my 87, 2 1/2 years. Stock pump will function but probably will not have enough volume. I already had a Walbro 255 in mine. Still have the original 25 year old rubber lines that hook up the tank. I did replace the lines under the hood just to be safe. Its not hard to convert. I ran 24# Bosch IIIs for a long time but they were maxed out on duty cycle. Also had to max the FP to keep the AF good at WOT.
Dont believe the BS stories. Unless you have stock Multec injectors, nothing is going to crumble away and fail. The pump wont catch fire in the tank. The tank liner wont melt away. The ***** wont come and take your children.
Dont believe the BS stories. Unless you have stock Multec injectors, nothing is going to crumble away and fail. The pump wont catch fire in the tank. The tank liner wont melt away. The ***** wont come and take your children.
Last edited by JackDidley; Jun 18, 2012 at 03:19 PM.
Thread Starter
Drifting
Joined: Sep 2002
Posts: 1,642
Likes: 0
From: Suwanee,Ga
Ive been running E85 in my 87, 2 1/2 years. Stock pump will function but probably will not have enough volume. I already had a Walbro 255 in mine. Still have the original 25 year old rubber lines that hook up the tank. I did replace the lines under the just to be safe. Its not hard to convert. I ran 24# Bosch IIIs for a long time but they were maxed out on duty cycle. Also had to max the FP to keep the AF good at WOT.
Dont believe the BS stories. Unless you have stock Multec injectors, nothing is going to crumble away and fail. The pump wont catch fire in the tank. The tank liner wont melt away. The ***** wont come and take your children.
Dont believe the BS stories. Unless you have stock Multec injectors, nothing is going to crumble away and fail. The pump wont catch fire in the tank. The tank liner wont melt away. The ***** wont come and take your children.
Thanks... no substitute for experience.
Pretty much done with this decision.
Safety Car
Joined: Sep 2010
Posts: 3,752
Likes: 190
From: Indiana PA
Sounds like you've thought this through and did some research. Have fun with the E85!!! 
@Jack, I was thinking of the Multec's when I was writing my last post.
Still I would not risk it without changing out at least the o-rings. A fuel leak back at the tank is one thing with the stock rubber hoses on the metal lines a fuel leak up in the engine compartment is another.
I agree, tank should be fine, and metal lines. Plastics/rubbers are what I would be concerned about. Mostly a safety thing on those.
@Jack, I was thinking of the Multec's when I was writing my last post.
Still I would not risk it without changing out at least the o-rings. A fuel leak back at the tank is one thing with the stock rubber hoses on the metal lines a fuel leak up in the engine compartment is another.
I agree, tank should be fine, and metal lines. Plastics/rubbers are what I would be concerned about. Mostly a safety thing on those.
Race Director
Joined: Sep 2003
Posts: 16,838
Likes: 341
From: Database Error Indiana
Thread Starter
Drifting
Joined: Sep 2002
Posts: 1,642
Likes: 0
From: Suwanee,Ga
Sounds like you've thought this through and did some research. Have fun with the E85!!!
@Jack, I was thinking of the Multec's when I was writing my last post.
Still I would not risk it without changing out at least the o-rings. A fuel leak back at the tank is one thing with the stock rubber hoses on the metal lines a fuel leak up in the engine compartment is another.
I agree, tank should be fine, and metal lines. Plastics/rubbers are what I would be concerned about. Mostly a safety thing on those.
@Jack, I was thinking of the Multec's when I was writing my last post.
Still I would not risk it without changing out at least the o-rings. A fuel leak back at the tank is one thing with the stock rubber hoses on the metal lines a fuel leak up in the engine compartment is another.
I agree, tank should be fine, and metal lines. Plastics/rubbers are what I would be concerned about. Mostly a safety thing on those.
carb.. track only car. Sealing is still a concern. $300.00 to get it done right .
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