user_name

50/50 meth with which nozzles? That could easily be holding you back from going over 800rwhp.

Res1cue

625ml and 175ml

Thats the snow performance recomendation.

user_name

So that is an m10 and a tiny 2nd nozzle. Unless that pump is running some serious pressure that is not much meth for a car trying to max out a ysi. I'd guess like 780rwhp trying to keep it safe. The guys making 850+ on pump+meth use lots of alky. 50/50 is great, but you need twice the volume.

Most snow kits I have seen are crap, but I suppose you can spec it however you like.

Res1cue

250psi pump. I can tell you I have tested the 625 by itself and it can go thru a gallon of fluid in nothing flat at full pump cycle.

BADZ

My snow was crap also...

user_name

Half of it is water. That will help prevent detonation, but it won't help much in making power. You likely need 2 m10 nozzles running at least 2/3 meth to safely make somewhere in the 850-950 range with 93 in the tank. This is an educated guess, but it is pretty educated....lol

Good luck with finishing off the rest of the build. Watching the previous one was painful.

Res1cue

I would be very happy with 800....

0chris@sfcc

Glad to see things are shaping up after the last blower debacle. Sounds like you might be wanting a smaller pulley!

Out of curiosity, any reason for the 1/2 water and not 100% meth?

Hope you're enjoying the car!

Res1cue

I have read countless times that a 50/50 blend is the best and that is what is recommended by the vendor of the system. Not enjoying it yet as we think there is a boost leak somewhere. Only able to put down 10psi with a 7.54 crank pulley and 3" blower pulley. Numbers currently sit at

634 rwhp
604 tq

PowerLabs

Hi John,

"Best" is a very relative term. It would be "Best" to ditch the whole system, have a functional windshield washer, less weight from not having that pump up front, and not entrusting your engine to another system which can and does fail. It is also best to not have to worry about running out of Methanol during a long trip. I've ran out 3 times so far. I can easily go through 2 gallons of methanol for every 1000 miles driven and that is a typical weekend drive for me.

HAVING SAID THAT... Pure methanol will always make more power, period. So if "best" = most power you should be running that.

Res1cue

My definition is best is best protection for this investment. I want the 50/50 more for a safety net than for power.

user_name

I think 50/50 is best for preventing detonation assuming enough octane. The water helps prevent spark knock. Snow only rates their pumps for 50/50. The issue is that you need twice as much volume as you do meth only to make the same power assuming you need the octane.

The numbers you made could be made w/o meth though. Are you running a 6-rib? I had assumed you had an 8" balancer.

5 Liter Eater

The best argument I've heard for 100% meth was from Julio. It has to do with the temp at which meth turns to gas which is under the typical FI intake temp. So as soon as it hits the intake charge it phase changes and will distribute more evenly whereas water will still be in liquid form and the droplets will not distribute as evenly.

MARSC6

50% water will form a puddle in the intake. I've seen this with my previous setup.

user_name

Seems kinda strange for anything to puddle under boost. I ran a 50/50 mix activating progressively from 2-3psi maxing out an m10 nozzle for 2 years making over 700rwhp on a stock ls6 with zero issues.


Regardless of all this debate you are going to need a certain effective octane to be able to throw enough timing at this setup to make power safely.

MARSC6

It didn't cause a problem. I just noticed it when I removed the intake manifold and it dribbled out onto my leg.

FactoryRaceCar

On your motor 8" and 3" should easily net you 16-17psi depending on your exhaust system. Depending on restrictions/slippage etc

vegasredz062

I say 822/747 @16-17 PSI

0Steve@AandACorvette

BADZ

So what the final numbers?