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Old 1st-January-2013, 06:14 AM   #1
64chevy

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Switching to E85?

Does anyone have any info on switching over to e85. What all do you need to do, just get a e85 carb or can you switch a regular gas carb over with mods? Also does fuel system need changed at all? I have a 355 with a holley 850 mechanical and a 177 weiand blower. Thanks for any help
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Old 1st-January-2013, 08:08 AM   #2
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You can change your carb over with different metering blocks if you choose to, but most times they are never really right. You will need a fuel pump that is compatable with E-85 or methenal and the same with your fuel lines. E-85 takes a large amount to run than gas. So everything needs to be up to par. You need at least 8an line from tank to pump, from pump to regulator, and 6an from regulator to carb. Fuel pressure will have to be around 7 to 8 psi to keep up with the demand of the new fuel.
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Old 1st-January-2013, 09:06 AM   #3
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x2

and i believe a lot of the time even with the metering block kits you will still need to mess with the air bleeds in the carb too. Quick Fuel makes E85 specific carbs you may want to check out. Im thinking about changing over myself in the future when/if we get more stations around here supplying it. I think it would be eaiser then modifying one for gas. just my

http://www.quickfueltechnology.com/c...-drag-e85.html
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Old 1st-January-2013, 10:07 AM   #4
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E85

I am converting my 13:1 cr solid roller 383 to e85.
I'm reading on it.
I think in a nutshell makes more torque, allows to get by with more compression, runs cooler, burns more fuel( not as much as methanol)

Quick fuel carbs get the job done.
You might search yellow bullet for more info.
I think I might go with this guy:

http://www.marksullense85carburetors.com/
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Old 1st-January-2013, 11:35 AM   #5
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E85

the couple fellas that run it I hang with have good things to say about it, but in the same breath they also say the pumps at the local stations that do provide it say its VERY inconsistent at the pump and the one fella actually mixes his own...the other posters info is spot on....youll need more volume a proper pump and of course a compatible carb...Ive also thought of converting over for price differences and cooler (colder) fuel
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Old 1st-January-2013, 11:41 AM   #6
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One thing to keep in mind is with E85 out of the pump is the quality is inconsistant. I have a few friends that are using E85 to its limit so they mix their own when they know they will be boosting or spraying heavy.
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Old 1st-January-2013, 12:15 PM   #7
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Thanks guys. Good points on the quality of fuel. I may just stay with 93 octane for now. Thanks
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Old 1st-January-2013, 03:41 PM   #8
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Quote:
Originally Posted by jammn73 View Post
the couple fellas that run it I hang with have good things to say about it, but in the same breath they also say the pumps at the local stations that do provide it say its VERY inconsistent at the pump and the one fella actually mixes his own...the other posters info is spot on....youll need more volume a proper pump and of course a compatible carb...Ive also thought of converting over for price differences and cooler (colder) fuel
Anyway to test for inconsistency in the fuel?
Any stations that tend to sell better fuel?
Thanks
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Old 1st-January-2013, 04:27 PM   #9
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You can get a tester to test the fuel for less than $20. Then just have to mix it to keep it the same. Or if your just driving it there can be a variance and you can still be fine. Pump gas is not consistant either but noone tests it to make sure. It will vary a point or 2 as well. For all out racing it needs to be the same everytime, but for driving it is fine. I have a friend that runs it in his 14-71 blown 540 Camaro on the street. If it comes up to E-90 it will run a little cooler. If it comes up to E-75 runs a little warmer. No major difference on a driver. During the winter months you will get a E-75 or E-70 blend to help with the starting of the car but it doesn't hurt anything for driving.
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Old 1st-January-2013, 06:17 PM   #10
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Originally Posted by lktna View Post
You can get a tester to test the fuel for less than $20. Then just have to mix it to keep it the same. Or if your just driving it there can be a variance and you can still be fine. Pump gas is not consistant either but noone tests it to make sure. It will vary a point or 2 as well. For all out racing it needs to be the same everytime, but for driving it is fine. I have a friend that runs it in his 14-71 blown 540 Camaro on the street. If it comes up to E-90 it will run a little cooler. If it comes up to E-75 runs a little warmer. No major difference on a driver. During the winter months you will get a E-75 or E-70 blend to help with the starting of the car but it doesn't hurt anything for driving.
Good to know!
Thanks!
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Old 2nd-January-2013, 02:35 AM   #11
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I'm liking it so far. a tester kit is cheap and you can mix with 87 as needed. fairly easy for me to get a hold of but would like to see a few more stations carrying it.
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Old 2nd-January-2013, 09:49 AM   #12
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Several of us are running it in our race cars. We really like it. Fortunately for us, they dont't change the blend here, so we don't have to mess with the blend. We usually test the first batch of the season, but other than that, we just run it.

When we changed over, we only changed carbs. We had pumps, and fuel lines that were sufficient (just your standard braided steel lines and a Magna fuel QuickStar 175). You can figure on using 30% more fuel. If converting your own carb, there is more to do than just metering blocks. My brother and I bought carbs from Eric at horsepower innovations. Two of my buddies went with a different builder and have since sent them to Eric to be redone. If you are buying or converting a carb, you should at least give Eric a call.
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Old 2nd-January-2013, 04:57 PM   #13
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With my new build on my 62 I am going with a twin turbo 540 on E-85 with a 12.0:1 engine. If it wasn't for the E-85 I would have to run at least C16 or better in it because of boost. You will not go wrong with changing.
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Old 2nd-January-2013, 05:04 PM   #14
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Quote:
Originally Posted by lktna View Post
With my new build on my 62 I am going with a twin turbo 540 on E-85 with a 12.0:1 engine. If it wasn't for the E-85 I would have to run at least C16 or better in it because of boost. You will not go wrong with changing.
Do you have any pics of this beast. Sounds pretty wicked. I am still thinking a out the switch. We have plenty of E85 stations around here, so thats not a problem. Mainly sounds like i need a custom made carb and adequete fuel system.....
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Old 2nd-January-2013, 05:25 PM   #15
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It is a work in progress. I have my short block together. Just waiting on funds for the rest. I put it on hold for Christmas and next month will start on it again. Heads, intake and 1250 Dom E-85 carb will come end of next month. Then the twin 80's after that. Planning on end of race season to have it together.
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