why.

 

raver you should dialogue with area in PM's he knoze his stoughs...

 

The previous nozzle wasn't allowing the car to hold enough timing. It would barely hold 18 degrees with a 50/50 mix without knock @ 26psi with the EFR. We want to get the max timing the car can hold (while making more power). Obviously there would be an improvement with 100% meth I think, and then adjust the nozzle size accordingly. 12 may be too big, but if so we'll put it down a notch or two. I personally run race gas, meth is dangerous stuff - not only for the engine but because it burns invisible. My car on race gas took 25 degrees of timing. 26 made no more power so we stuck with 25.

 

If that's your reasoning, you're going the wrong direction.

 

Lol ok

 

Using meth for fueling is a dangerous thing IMO, but to each their own. Good luck with the build and tuning

 

above 24 is pissing up a rope on the lnf.
water is added to methanol to raise the flash point of it.

The idea of "more is better" is hugely over rated.

 

Location Location Location
Mixture Mixture Mixture

 

Here's some food for thought for pre compressor injection:

Disclaimer: there's lots of variables here. But counting them as constants makes this much easier to explain. If you have a basic understanding of chemistry and physics you should be able to follow along...

The amount of heat added to an air charge can be thought of as a percentage increase in temp above absolute zero (0K)
This does not change if nothing else does.
W/M absorbs a set amount of heat per mass. This also doesn't change.

So say you have a compressor(turbo) that adds 50% (at boost level X)
If your incoming air temp is 100K, the outlet temp will be 150K.

Take that same compressor, add in a w/m mixture that absorbs 20*K and enters the airstream post compressor
Your exit temp drops to 130K

Now relocate the w/m pre compressor.
Your incoming charge drops to 80K, outlet temp (80*1.5) is 120*K.

Now your don't get exactly this gain, as some of the heat is being absorbed AS the air is being compressed, but the reality is the same and shows why pre compressor is a better use of your w/m injection.

These numbers were all made up off the top of my head, but the theory and math were not. You get the point.

 

was the cosworth Indy engine meth ring not precompressor?

 

Funny you mention that... He stuck with that same setup for multiple generations of engines. At most he injected 40% or total fuel PCI but best gain was 20%.

 

And to think... 20% of the fuel PCI generated below ambient temps at times... With no other intercooling.

 

ya no other intercooling. BITD the Penske race team gave me an Offy intercooler to put in my '76 BMW turbo they had found big gains intercooling on the 917K lol

 

Perhaps the single greatest article I've found yet... It'll take you about a half hour to read, but it's 100% worth it!

http://killerbeeperformance.com/indu...mical-cooling/

 

That's great and all....well...if you trust your tank not to fail.

 

thats a very good point and one I struggled with using meth. so.
check valve at the nozzle. flow meter (AEM do such a kickass one its unreal)
Rodney's 3 gallon trunk mounted AIS Tank with pump integrated into it.
Run the lines inside the car for protection.
Thats got to be as fail safe as anything you could do.

I ran meth for some time. It sure does have some advantages. I got turned off by smalltanks, then Rodney came out with his 3 gallon tank. And then Harrop got all snakey over meth and their TVS. Then an M62 we built with long term meth use ( four years) seized the bypass valve from corrosion.

so

no meth for me.

for you and Alan, hammer down. but if you pay attention to the Indy Cosworth guys et al, you run precompressor.

each to his own...

 

Get the good stuff.... NOS

 

I took the advice from a reputable shop... no m/w for me either.

 

I have read the killerbee article thanks Alan very good find. Raver, you got some thinking to do.
worthy of the effort. If i ran a turbo, i would rock it.

 

Factory sc bypass solenoid t'd into top wastegate line. Iat boost set at zero, iat limit at your choosing.
If w/m fails and temps climb, walah you're on spring pressure. That combined with an aem flowmeter; it doesn't get any more fail safe.
This is lsj obviously

Lnf simply t in a 100psi Hobbs switch to a standard relay. Pump power to 30, +12 to Hobbs then through 85/87, 87a to a warning light in cabin.

You seem like a really nice guy. All I'm asking is for you to give it some thought

 

oh and one more thing. If I ran a fogger, on a TVS? Maybe meth could make a comeback for me. I really like that Killerbee fogger concept. sometimes with meth when we were dicking with it tuning it would come in hard and the motor would practically die from it. no beuno for the motori.

 

The I-fog is $300 for the bare model and only 3.5"
That could be worked around. But... I wouldn't be me if I didn't make my own

 

Lol its not for me. SSKev and I were trying to figure out what was best for Revolution he wants more power. I think he is on the right idea for nozzles and locations just to make sure there is more even distribution of fuel. I wouldn't want to spray on a 2k turbo...wear...

I stay away from de ****....race gas for me

One backfire with 100% meth...I dunno. I can do crazy things sometimes with my motor but its not for everyone.

I have a fire extinguisher in my car just in case I get a flame...but what if u can't see it Lol.

 

I think you're misunderstanding me a little here. I never said to run 100%
I agree that that's not safe.
I would never run 100% meth either unless of course it was a meth fueled car.

That's what I meant by my earlier comment about you heading the wrong direction:
Meth for cooling, water for knock suppression.
Don't run 100%

 

ahh this is good info, like i said before, i am willing to rebuild if something goes wrong. free information is a good thing, and yes a fire extinguisher will be in my car. I rarely drive my car hard - maybe 10% of all my driving in the summer only, and even then its only 7-9k km a year. When i modded the car for the first time , i knew it was going to be a 400hp all the way till the end. So i am here now. Just looking for an easy way to gain a bit more with the stuff i have already.

I will be switching from 1 nozzle to 4 nozzle on the IM. How many people actually run pre-comp with meth on here?

I will look into AEM flow meter - i have multiple lights already, this is the only thing i am missing.

OP i hope you are getting some good information for these guys, i know i am.