New e-85 setup. Track runs and powerlogger

[Savageite]

Stock heads??

 

[trbogn]

Yea, untouched motor. Stock heads, cam, etc.

 

[Savageite]

Meant to ask earlier but are still on the stock fuel lines?

 

[trbogn]

Yea, stock fuel lines with hotwired walbro 340 and volt booster, siemens 80s.

 

[JustABuick]

Yea, stock fuel lines with hotwired walbro 340 and volt booster, siemens 80s.

My fuel lines gave out yesterday, so now I'm on the fence about switching to e85, and a few months back I bought those same injectors in case I make the switch to e85. I have a hotwired Walbro 340. Your car is running about what I want out of mine, so reading this is really making me think about switching over. I don't have a WB or Powerlogger, though. How vital are those if you're running e85?

 

[belsie]

All those are helpful but E-85 is great if aware of : higher pressure means larger return line at least! See my sig and consider new feed & return just in case..........

 

[JustABuick]

Where did you get the lines?

 

[belsie]

Need to build lines from local speed shop or patience with online suppliers... need to have 6an for return and 8an for feed.. I ran mine along left frame rail into back of engine for both. 2 filters 1 at tank & 1 at fuel rail . Lot's of research and decisions but worth it when finished!!! Clean, new, big enough for any fuel & you could always go back if desired...........................

 

[JustABuick]

That's what I like about the idea of giving E85 a shot, I can use the same pump and injectors with gas. How hard would it be to switch back? Do you mind if I ask what a ballpark estimate is for those feed and return lines with the fittings?

 

[belsie]

Spent app. $350 for everything and did install myself. Remember chip must be addressed to move to e-85 properly, yet easily changed back using TT chip with Eric's help...........

 

[JustABuick]

Thanks for the info. I was hoping to get away with stock lines, just run my 80s, a new chip, and would sell my Walbro 340 and get the DW 300, but I might have to get the bigger lines

 

[sattoearth]

Trbogn,
What did you do tun run e85? Chip and injectors only?

 

[turbo89]

Thanks for the info. I was hoping to get away with stock lines, just run my 80s, a new chip, and would sell my Walbro 340 and get the DW 300, but I might have to get the bigger lines

you don't need bigger lines

 

[dank GN]

I would add more timing and keep the boost around 25-30 .E85 loves timing .one thing I learned was to lower my EGTs I had to advance the timing. I have added 3* across my whole spark table

 

[Rafs-T-Type]

I would add more timing and keep the boost around 25-30 .E85 loves timing .one thing I learned was to lower my EGTs I had to advance the timing. I have added 3* across my whole spark table

So where you at with your timing?

 

[JustABuick]

you don't need bigger lines

Just run the non teflon regular fuel injection lines?

 

[belsie]

These cars are 30 years old............... any improvement for either delivery of fuel at higher rate or just updating is something to consider!! Hi pressure needed for E-85 in itself calls for larger return line...........you decide how much you want to spend and assure results ??

 

[JustABuick]

What's the fuel pressure supposed to be at idle? does it increase 1psi for every psi of boost?

 

[turbo89]

Just run the non teflon regular fuel injection lines?

People blame return line size on other restrictions .. DW300 is the biggest you can go on a intank with a stock return line and in reality is all most will need .. Only lines that i do replace on some cars ( they were bad before the E85 conversion) are the short lines back by the tank

 

[turbo89]

What's the fuel pressure supposed to be at idle? does it increase 1psi for every psi of boost?

It depends on setup .. Dont lock in on a number 40-55 can all be correct