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E-85 winter blend?
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Author:  Beretta [ Tue Aug 21, 2012 6:41 am ]
Post subject:  E-85 winter blend?

Im thinking Mark S and I are in the same boat as far as getting enough summer blend of E85 here in the north east.. When do you think there going to start switching over??
Now last 20 gallons I got was E90... Also going to get about 50 gallons to store for the winter so I have enough for the spring... ;-)

Author:  mslayton [ Tue Aug 21, 2012 8:07 am ]
Post subject:  Re: E-85 winter blend?

Barry - last year I was checking regularly to try to guage the timing and they switched sometime in Mid- September. I'm in the same boat and need to stock up so that it doesn't bit me in the spring. I guess the good thing is that we typically don't start until late April, so i'd only need 20-25 gallons to get me into early May when they switched back. I guess worse case, I could add a few jet numbers and run the E70. I'm hoping to install my updated logger stuff this weekend and get out labor day weekend for a 3 day race. I'm very interested in getting data with engine rpm, driveshaft rpm and fuel pressure.

Author:  Beretta [ Tue Aug 21, 2012 8:42 am ]
Post subject:  Re: E-85 winter blend?

Thanks Mark, We start here the first weekend in March that is weather permitting.
But I usually don't get out till the end of March as you really are taking a chance with a high HP car on a cold track O:) ..
Let me know what your tested at as my last load :-s was E90..

Author:  jmarkaudio [ Tue Aug 21, 2012 10:26 am ]
Post subject:  Re: E-85 winter blend?

Actually since a lower percentage of ethanol means a higher percentage of gas, this make it richer when you get to the winter blend. Couple that with cooler weather I don't know that you need to jet down and especially not up. If you do one jet size should be sufficient.

Author:  Ken0069 [ Tue Aug 21, 2012 2:28 pm ]
Post subject:  Re: E-85 winter blend?

Yeah, I was thinking that same thing on the jet when I saw that? More gas in the mix means you use less but had no idea how much.

And along that line, just how much does this mix change in the winter up north, ie, you said E70? Does it go lower than that, ie, E60, etc?

And if it does, what happens to the octane rating when it does? :-k

Author:  mslayton [ Tue Aug 21, 2012 4:30 pm ]
Post subject:  Re: E-85 winter blend?

Sorry, thanks for the correction. I guess that's what happens after traveling for 48 hrs.


I tested the fuel once in October and again in march and both times it was between 70-75%. My engines static compression ratio is 12.5 to 1 and a compression test yields apprx. 195, so I don't think I have too much concern with at least 70% E85.

Author:  ron [ Fri Oct 05, 2012 10:05 am ]
Post subject:  Re: E-85 winter blend?

Picked up 35 gal yesterday in the Buffalo NY area for next spring and was surprised it tested at 90 %, this time last year it was about 78 to 80 % already. The price was also a slight surprise at only 3.29, with reg gas at over 4.09 a gal

Author:  ron [ Fri Oct 05, 2012 11:18 am ]
Post subject:  Re: E-85 winter blend?

mslayton i talked to a friend of yours on the phone a few minutes ago from the Rochester area, Mark Thelmedge, I converted a 3 circuit gas dom to a e85 2 circuit for him a couple of years ago for his vega, good guy and a great racer.

Author:  Beretta [ Fri Oct 05, 2012 4:24 pm ]
Post subject:  Re: E-85 winter blend?

ron wrote:
Picked up 35 gal yesterday in the Buffalo NY area for next spring and was surprised it tested at 90 %, this time last year it was about 78 to 80 % already. The price was also a slight surprise at only 3.29, with reg gas at over 4.09 a gal


Ron, That's going to need between 1 to 2 gallons of gas to get it to E85...Are you going to do that???I did as I wanted to keep the consistency..

Author:  mslayton [ Fri Oct 05, 2012 6:25 pm ]
Post subject:  Re: E-85 winter blend?

Hi Ron. Yes, Marks a great guy and fabulous racer. He went all the way to the summit super series race last year in his dragster. He's put down a .010 package against you in either car. I haven't seen him much this year with my limited race schedule, but interesting to know he converted to E85 a few years ago. I'll need to try to catch up with him and chat next time we're at the track.

Author:  ron [ Sat Oct 06, 2012 1:25 pm ]
Post subject:  Re: E-85 winter blend?

Mark he has always used meth in the dragster and late this summer he switched the vega over to meth also. Ken the lowest % of ethanol i measured in e85 was 72%, thats between April to Oct, never checked in the dead of winter. Barry with all e90, i'll add 1-1/2 gallons of 93 to get to about 87 % ethanol, thats about the blend i used all year from the pump, the consistency for me is the same with the ethanol between 85 to 87 %.

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