TeamSwift
http://www.teamswift.net/

Thoughts on running Ethanol in a Mk1 or Mk3
http://www.teamswift.net/viewtopic.php?f=34&t=47786
Page 1 of 1

Author:  maxvamp [ Mon May 10, 2010 12:31 pm ]
Post subject:  Thoughts on running Ethanol in a Mk1 or Mk3

Here in Colorado, Ethanol is readily available ( we produce the stuff ) .

I was wondering if people have run an Ethanol mixture in the little FI swifts? If so, what percentage. I have no expectation the cars can use E85, but maybe E40?

With the wonderful job BP is doing, I am expecting a slight increase in fuel prices shortly.

Max.

P.S. I plan on trying it in a 87 T3, and a 93 Metro. I'll report if I have any luck.

Author:  Lihtan [ Thu Oct 20, 2011 1:46 pm ]
Post subject:  Re: Thoughts on running Ethanol in a Mk1 or Mk3

Running ethanol in these cars is something that interests me as well. I know that the factory fuel system can tolerate about a 10% - 15% ethanol mix without problems. Anymore than that will require upgrading the fuel system, and retuning the motor.

Author:  suprf1y [ Thu Oct 20, 2011 7:50 pm ]
Post subject:  Re: Thoughts on running Ethanol in a Mk1 or Mk3

Ethanol is good stuff. Don't think you'll need anything more than bigger injectors/more pressure to run more.

Author:  maxvamp [ Thu Oct 20, 2011 9:56 pm ]
Post subject:  Re: Thoughts on running Ethanol in a Mk1 or Mk3

I tried a tank in the 93 Metro. The stock mixture definitely was too lean. The car ran, but I was not happy with the performance. Maybe the T3 will do better. Will report back later...

Max.

Author:  nemoskull [ Wed Dec 25, 2013 8:16 pm ]
Post subject:  Re: Thoughts on running Ethanol in a Mk1 or Mk3

ethanol in a mk1 will requires a new carb.
at any rate, IIRC there was a test of a trip to las vegas in a flex fuel suv. e85 cost more per MPG and the enviromental impact was negligable.
tho whats the octane rating on e85? would be very cool to run 13-1 comprsison :)

Author:  Prairie to Pine Co. [ Thu Dec 26, 2013 10:12 pm ]
Post subject:  Re: Thoughts on running Ethanol in a Mk1 or Mk3

Don't. Unless the car is set up from day one to run on it. Its a fools errand. I still think ethanol is a waste and I'm From a big ethanol state. If the manufacturers were to purpose build them to run on pure alcohol like they do in Brazil, Argentina and places of that nature. sign me up, But this movable mixture business e-10 (Ethanol) e-15 (What is supposed to be changed over to this year.) E-20-to e-25 (what the ethanol lobbyist are trying to stuff down our throats) is a non-starter Jonathan

Author:  DTM GTi [ Fri Dec 27, 2013 2:20 am ]
Post subject:  Re: Thoughts on running Ethanol in a Mk1 or Mk3

Just like other people pointed out , ethanol has less energy content per volume then gasoline , so your carb with gasoline jetting will not work . Second problem are the rubber parts in your fuel system. They are not designed for ethanol and will get dissolved by it. You would need to change all the rubber hoses and O-rings to stuff that's designed for ethanol.

Author:  aqqus [ Fri Dec 27, 2013 2:32 am ]
Post subject:  Re: Thoughts on running Ethanol in a Mk1 or Mk3

Ethanol is corrosive. Like DTM Gti said the rubber parts wont hold up and the steel lines ant tank will need to be changed to stainless steel or higher grade plastic if you intend to run ethanol for long term. Ethanol is corrosive enough its not allowed to be transported by pipeline, tank type transport only.

Author:  nemoskull [ Sat Aug 01, 2015 3:51 pm ]
Post subject:  Re: Thoughts on running Ethanol in a Mk1 or Mk3

okay, so after messing with the mcs in the mk1 carb i think you might be able to run enough e85 to keep the motor happy, but you will have mod the poop out of the carb controls.
and its useless for MPG or cost unless you shave the poop out of the head.
but its a cool idea for performance, e85 is something like 100 octane.

Author:  Geod [ Thu Sep 10, 2015 8:10 am ]
Post subject:  Re: Thoughts on running Ethanol in a Mk1 or Mk3

Without mods on a carb and you run E85 straight, it has a hard time accelerating as it cant get the AFR correctly.

E85 has less energy content, so the fuel jets need to be bumped up about 3 sizes and up the air-bleed jets 2 sizes usually.

Plus the accelerator/enrichen mix has to be bumped up to supply more too.

I experimented on the simplest form of a carb with all kinds of mixtures: 67 VW Bug single Solex carb.

To take advantage of the 110 Octane level which has nothing to do with energy content, you can run a combination of all these: advanced timing, higher compression or higher boost, higher aggressive cams.

In all my cars from the old carb to the new EFI in my 04 GMC Yukon, I run 50/50 with no mods and it helps with passing smog checks at the tailpipe.

1gal E85 then add 1gal GAS.

If your car runs rich and has alot of HC (hydrocarbons) during smog, this will reduce that number by alot, but this is a sign you should check compression too.

Page 1 of 1 All times are UTC - 5 hours
Powered by phpBB® Forum Software © phpBB Group
http://www.phpbb.com/