Using e85 instead of intercooler
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Using e85 instead of intercooler Hi guys new to ls1tech. Though I have read lots of useful information on here so thanks all.
My setup is a 5.3 228r cam 76mm turbo non inter cooled. Self tuned on e85 makes a healthy amount of power . This is all in a 2800 lb BMW e30 . Anyways I don't really have a problem at all however I was wondering if anyone here has experimented with adding injector into intake track with e85 spraying through it to reduce intake temps. Mine are not over 200 degrees but I also have no room for intercooler without really going to hack town on the front of the car. Even using a nitrous fuel solenoid and hooking up just as you would with nitrous but without the nitrous. I know the blow through guys are frosting there intakes with e85 just seeing if this would be a worth while thing or a waist. Also thought about just injecting water only for some cooling. But figured I'd see if the e85 has been done before .
My setup is a 5.3 228r cam 76mm turbo non inter cooled. Self tuned on e85 makes a healthy amount of power . This is all in a 2800 lb BMW e30 . Anyways I don't really have a problem at all however I was wondering if anyone here has experimented with adding injector into intake track with e85 spraying through it to reduce intake temps. Mine are not over 200 degrees but I also have no room for intercooler without really going to hack town on the front of the car. Even using a nitrous fuel solenoid and hooking up just as you would with nitrous but without the nitrous. I know the blow through guys are frosting there intakes with e85 just seeing if this would be a worth while thing or a waist. Also thought about just injecting water only for some cooling. But figured I'd see if the e85 has been done before .
Like injecting any other fuel, it's going to affect your tune. Which could be bad, especially if it doesn't work. Where the cooling counts is in the chamber. I thought of running meth/water non intercooled, but snuck an A/A in there. If I run into cooling temp issues, the A/A will come out and the meth/water will go in. Maybe easier to try a water/meth kit and see if it does what you want.
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Forcefed86 - What are you thoughts on compressor wheel damage injecting pre-turbo? Say that you only have access to inject a foot or 2 upstream in the intake plumbing going to the compressor housings(s)...
Some of the old kits that injected streams of water instead of a fine mist would erode the compressor blades over time. Esp. a tiny turbo spinning at super fast RPM. And/Or in diesel applications where the water injection sprays constantly. With the relatively large compressor wheels spinning significantly slower and the fine mist most kits put out it's not really an issue. Also injecting 100% methanol over water helps as the droplets weigh less and have less of an effect on the blades.
Last edited by Forcefed86; Apr 26, 2016 at 08:31 PM.
Some of the old kits that injected streams of water instead of a fine mist would erode the compressor blades over time. Esp. a tiny turbo spinning at super fast RPM. And/Or in diesel applications where the water injection sprays constantly. With the relatively large compressor wheels spinning significantly slower and the fine mist most kits put out it's not really an issue. Also injecting 100% methanol over water helps as the droplets weigh less and have less of an effect on the blades.
Water pulls more heat, but it's not combustible. So without a serious ignition system, you run into ignition issues at high volumes. (At least I always did).
Since there's no real limit to the amount of methanol you can spray, it was always easier for me to go straight meth... which also ups the octane as a side benefit. I guess ideally some percentage of water would be beneficial. Even mixing 90/10 my 30gph worth of nozzle would cause ignition problems. So i left the water out to keep it simple.
Since there's no real limit to the amount of methanol you can spray, it was always easier for me to go straight meth... which also ups the octane as a side benefit. I guess ideally some percentage of water would be beneficial. Even mixing 90/10 my 30gph worth of nozzle would cause ignition problems. So i left the water out to keep it simple.
I used two 800cc injectors pre turbo and staged them in starting at 5 psi, non intercooled, on3 78mm. I dont have any hard data on air temps, I didn't thrust the sensor numbers with fuel being sprayed in the manifold. Mostly just an experiment, and gave me some duty cycle back from the main injectors.
Thats a cool setup superbeetle that not many do. Are you just tapped off the main fuel feed? And are you using a secondary controller, pulling off existing injector signals and just cutting the signal until it hits 5 psi, or just turning them on/off at 5psi with a pressure switch??
And yes I have seen compressor wheel damage pictures and discussions from pre-turbo injection. But more of an issue on hgih RPM turbos, which is why I didnt go pre-turbo on my ecoboost (they spin to 200K rpm's when maxed out i'm told, and im maxed out)
I was running a megasquirt ms3x so it was controlling the extra injectors. Fuel was taken from a spare port on the regulator. It was a gen 3 5.3 with the standard china studs, gaskets, 220 cam, and springs. I was too chicken to really put the screws to it with the weak rods. It ran 5.7's in the eight, but the car was pretty damn light.