thanks for the sugestion and after i blew the piston i had the whole motor checked and the crank redone and the car was babyed for the first 2000 miles
also got a slightused 5 spd tranny in a hae a stage 3 clutch and flywheel on the way
and i was wondering wats the max horsepower i can get wit 650 cc injectors on e85

 

 

 

 

 

 

 

Keep your Oem crank pulley on there unless you scoop up one of those ati's

 

i have a zpi light weight which i been running that for about 30k now

 

650cc on e85 lol those injectors are way yo small for e85 unless your not trying to get much power.

 

What kind of car is this going to be? I'm guessing from the A6's a auto x or track car? If so what kind of suspension are you going to run?

 

they are r6 but right now its a axto x car in e-perpared class with race land coilovers hocthkis sways

 

thats what i thought and im shooting for 400 with this built motor i have now and its my sleeved motor im going to go for double that if not more

 

I doubt you will break 400 on e85 and 650cc. On pump you will be pushing it.

 

enough with a return system and wouldnt it be eashier on e85 since its a higher octane

 

What turbo are you going with?

 

I saw this car at park city autocross acouple of weeks back.

 

Are you planning on being competitive using those race land coilovers? I'd expect a much better suspension setup from such a serious "race-car" build.

 

You can run leaner on e85 and make more power yes, but it still takes more parts of ethanol to be stoich. Stoich for e85 is 10:1. Which is 10 parts of air for 1 part of fuel. So a lot more fuel is required. When a wideband is reading e85 and shows 12.5:1 a/f ratio, that doesn't mean you have that a/f ratio (unless it is setup to read e85). Your actual a/f ratio would be more like 8.5:1 of e85. So again, That is a lot of fuel. I would say at the minimum 900-1000cc injectors to make 400+ whp, or a ton of fuel pressure. Either way, you will need bigger injectors in my opinion. What are you running now fuel system wise other than injectors?

 

your gonna need way more than 650cc injectors for 500+ or whatever your doing for e85