E85, Compression ratio, and turbo...

Speedwagon · Apr 5, 2009

How high of a compression ratio can you use, if you are going to run E85 with a turbo? I'm thinking it can be fairly high, but don't really know.

meatheaded nucklebuster · Apr 16, 2009

heres some random stuff that might help
http://www.popularhotrodding.com/tech/0311_phr_compression_ratio_tech/index.html
http://www.carcraft.com/featuredvehicles/ccrp_0801_1973_dodge_charger/specifications.html
I couldnt find any charts with boost information but E85 is rated at 100 to 105 octane so you can use this and get some boost tables to figure out your detonation point using your compression ratio

tempforce · Jun 3, 2009

e85 = 100-105 octane.
you could run 11-12 to 1 compression, depending on cam selection.
for racing conditions maybe as high as 12.5:1
i've been checking into this for a 4.6L modular v8 build. for a '56' f-100.
so far the 3.9 cummins is the favorite for the truck, due to cost of building the 4.6L engine, and the ability to not need to use engine control computers, with the diesel.
cc

E85, Compression ratio, and turbo...

Speedwagon

Member

meatheaded nucklebuster

New Member

tempforce

Member

Sponsored Ad

Sponsored Ad

Staff online

Members online

Today's birthdays

Member & Vendor Upgrades

Latest posts

Truck of The Month

Recently Featured

Follow TRS On Instagram

Latest Album Photos

TRS Events

25th Anniversary Sponsors

Check Out The TRS Store

Sponsored Ad

Sponsored Ad

Sponsored Ad

Amazon Deals