Thread: e85 swap questions

Originally Posted by 04lss

Thats my plan, maybe headers, and then work on my handling (swaybars etc) until i get my taxes back and go turbo .
there's only one e85 station here close to my house, but the owner is running it in his car

Handling?! What's that?

I'm really looking forward to the octane gains. All I can get here is 91. Unless I want to pay $10/gallon for 110. Even with my listed mods, I'm still seeing 2°-3° of knock near 5k rpm on a stock pulley.

Stupid CAN gas!

Originally Posted by 04lss

is it at shift?

I don't think so. I think it's all heat related. When I do a WOT run before the engine is fully warmed up, I see 0° throughout the RPM range. As soon as she gets hot, I see blips at the upper RPM range. Not much though. Before CAI and headers, I would see 4°+ degrees under at 2500 RPM during a hill climb (moderate load). IAT's were at or near 130°. It get's hot as balls here. I think if I had 93 vs 91 that couple degrees of knock would go away.

Originally Posted by BrandonHall10

I don't think so. I think it's all heat related. When I do a WOT run before the engine is fully warmed up, I see 0° throughout the RPM range. As soon as she gets hot, I see blips at the upper RPM range. Not much though. Before CAI and headers, I would see 4°+ degrees under at 2500 RPM during a hill climb (moderate load). IAT's were at or near 130°. It get's hot as balls here. I think if I had 93 vs 91 that couple degrees of knock would go away.

I suppose I am tuned so my timing is adjusted to kill knock, but I had no knock on hot days on a 3.8 pulley gen 3 top swap, no headers or anything. (usually you have to run slightly larger pulleys on top swap because of the higher compression. ) I think i'm only running 14* of timing tho

Originally Posted by adecker

Go richer as temp gets higher... or there is a table that adjusts fueling based on WoT Time

Originally Posted by SnowTh1ef

I suppose I am tuned so my timing is adjusted to kill knock, but I had no knock on hot days on a 3.8 pulley gen 3 top swap, no headers or anything. (usually you have to run slightly larger pulleys on top swap because of the higher compression. ) I think i'm only running 14* of timing tho

I'm on a stock tune. A tuner is high on my want list.