E85 is more prone to pre-detonation than any other high octane fuel. The 15% 87 octane helps cause that.
E85 is more prone to pre-detonation than any other high octane fuel. The 15% 87 octane helps cause that.
E85 burns slower than gas so it doesn't have that sudden explosion like gas.
It can pre-ignite like Forest said which will wreak major havoc. That's why it's suggested to use a colder, non-projected plug.Quote:
Originally Posted by mehrshadvr4
There is some over simplification of ethanol vs gas on the last couple of pages that isn't entirely correct. If I have time, I'll try to dig up some of the links to MIT papers I have read on ethanol that will help the conversation.
That would be awesome. I've heard a lot of talk about ethanol but all too often it's just based on what people have heard from other non-experts (which I am of course guilty of myself).
On my original DR 800 build with a forged 3.1L, I pushed coolant like crazy with ARP studs and cometic gaskets. I was told by Matt Monet to put stock gaskets and stock bolts and it. That stopped the coolant push until I started running and 30 psi and nitrous together. Once it started pushing coolant it did a little bit frequently. After putting some fresh stock gaskets on I had Von Morgan tune it with a flashable ECU. Von made the engine happy by moving fuel tables around and timing adjustments.
Heads are back on now with the washer area machined flat and I used a larger washer, they are not going anywhere this time. Engine going back in next week