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Old 03-24-2011, 12:27 PM   #1
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Default 51ida going alchohol...

I have a set of 51ida Webers on my streetported 12a right now. I'm running regular 93 octane fuel in it. But very soon I will be doing an all motor peripheral 12a and switching to an alchohol based fuel. As far as I know, nothing really has to be done to the Webers themselfs when switching to alchohol or E85 besides fuel pump/lines/filter. True of false? Which is all getting swapped out anyway to handle the PP.

My question is really about running the 1st gen dizzy and where to get started on timing. Just advance it until it idles smooth and tune it from there? Don't really have a clue here...

Thanks in advance.






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Old 03-24-2011, 06:00 PM   #2
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i would start off 20L 10T....e85 and alcohol will corroded your carb if lift in it.you need to run pump gas in to it when finish running at the track....http://www.racingbeat.com/manuals/timingchart.pdf.

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Old 10-17-2011, 09:27 AM   #3
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Quote:
Originally Posted by sen2two View Post
I have a set of 51ida Webers on my streetported 12a right now. I'm running regular 93 octane fuel in it. But very soon I will be doing an all motor peripheral 12a and switching to an alchohol based fuel. As far as I know, nothing really has to be done to the Webers themselfs when switching to alchohol or E85 besides fuel pump/lines/filter. True of false? Which is all getting swapped out anyway to handle the PP.

My question is really about running the 1st gen dizzy and where to get started on timing. Just advance it until it idles smooth and tune it from there? Don't really have a clue here...

Thanks in advance.


nevermind the timing, what about fuel??!!
when you switch from gas to alcohol you burn double the fuel, so lets say your running a 240 main fuel jet on your p-port on gas. you switch to alcohol, you now need at least a 400 main jet(on the small side). the carb you have with the main jets removed wont flow more than 280..
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Old 10-21-2011, 08:31 PM   #4
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So basically there's now way I should run a 51 with alchohol? Or are there mods I can do to get it right?
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Old 10-22-2011, 04:52 PM   #5
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cant be done
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Old 10-24-2011, 02:50 PM   #6
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without knowing anything else, unless you can drill your jets out to double what you have, then ... refer to what Robert said.
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Old 10-24-2011, 02:54 PM   #7
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by the way ... what's up Robert????
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Old 10-24-2011, 03:21 PM   #8
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cant be done
I just wanted to comment about your name. Are you going to keep changing it as you make more power?
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Old 10-24-2011, 08:05 PM   #9
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I just wanted to comment about your name. Are you going to keep changing it as you make more power?
well it was 680 on the evil forum.. so i guess he found a few more ponies lol
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Old 10-26-2011, 02:43 PM   #10
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I just wanted to comment about your name. Are you going to keep changing it as you make more power?
sure am the new name is gonna be big
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Old 10-28-2011, 08:26 AM   #11
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Thanks for the help. I guess ill Stay with c16 until I go fuel injection. My slide throttle body prototype is almost done...
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Old 10-28-2011, 09:48 PM   #12
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if your going to be all motor c16 is the worst choice. its real high octane with a low specific gravity so it burns real slow. good for a turbo car but horrible for a n/a application. you can always make more power with low octane fast burning fuel. with lots of timing and 112 octane you will make the most power.
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