RBCUDA

iTrader: (6)

I'm going to be installing a turbo on a stock bottom end 00 TA. At the moment I have a set of milled 243's that probably put me at 11.1 comp. I have a set of stock 317's I figured I'd put on for peace of mind. Probably going to put a Tick stage 1 turbo cam in it to make it more efficient. Not sure if I can run 10lbs of boost or not safely. Is it pointless to run meth if my compression is down around 9.5-9.6 and I'm at 10lbs or less of boost? Thank for any info.

Shownomercy

iTrader: (1)

I have ~9.5SCR and 15psi, no meth.

If your IAT are good and you are not hobbling things up top with meth for fueling, you don't need it.

SLOW SEDAN

iTrader: (13)

Depends on the setup, its not required but generally spraying some M1 can help lower IAT's and run more timing then pump gas alone. Plus its a nice backup if you get a bad batch of fuel from the pump.

Also depends on what your psi relates to in CFM. PSI alone is useless since 10 psi on a ebay GT45 is completely different then a Precision Pro-Mod 88.

SPRAYED 01

iTrader: (22)

I run a max of 20psi so I have my meth start at 10psi. If you are only running 10psi you could start it at 5psi.

Detoxx03

iTrader: (14)

Started using it around 8psi. If you're asking when I have it coming on its comes on around 4psi and flows more as the power increase. Total of 11.3psii on my setup. I run 100% and love it because it cools and adds power. I wouldn't run a FI setup without it save for E85.

69-chvl

iTrader: (11)

I start at 14 psi and have it fully in by 17 psi. Doesn't like it any sooner.

stevieturbo

This.

Dont get confused with needing and wanting.

Many builds dont need it, but people use it because they will yield benefits from doing so. But it still isnt a case of needing it.

Really up to you whether it's pointless or not. The engine will more than likely see gains fro using it and tuning for it's use if used correctly vs none at all.

But with a low boost setup, just dont go nuts dumping loads in.

If you live somewhere where ambient temps are quite high, then it can make sense to use meth.

RBCUDA

iTrader: (6)

I have a PT7675 turbo. Maybe if I run meth I can get a little more boost out of it.

ramairetransam

iTrader: (18)

I got tuned for meth when i was at 8 lbs . Now its up to 13 lbs , starts spraying at 3 lbs.

RBCUDA

iTrader: (6)

Any recommendations for a good meth kit?

SwampWS6

iTrader: (7)

Devils Own, Alky and Snow Performance

SLOW SEDAN

iTrader: (13)

http://www.alcoholinjectionsystems.com/

SPRAYED 01

iTrader: (22)

I really like my alky control kit from Julio in Florida. You can run 100% meth which a lot of the kits done allow. It has a nice progressive controller and awesome tech support. Julio will talk your ear off about racing, great guy.

Detoxx03

iTrader: (14)

Alky Control with 100% methanol.

RBCUDA

iTrader: (6)

That alky control kit is nice. They are proud of though.

gccasper04

iTrader: (4)

I have a single nozzle alky control system that has never been opened that I would sell for cheap

RBCUDA

iTrader: (6)

Sent you a PM.

Atomic

iTrader: (37)

All you guys using meth kits might want to read this: http://www.performancetrucks.net/for...w-test-525874/

I have mine come on at about 4psi. 2x 14gph nozzles with 82mm turbo.

stevieturbo

One thing I'm not picking up from your tests.

You're stating flow figures and intake pressures.

But where are these coming from ?

Are you actually measuring flow or calculating ?

Intake pressure, are you spraying the nozzles into a pressurised chamber for the test ? so tested in real world conditions ? Or just into open air at atmospheric pressure ?

I read where Aquamist tested the typical "small" pump all the kits ( ie almost every meth kit uses the same small 160-200psi pump whether Aquatec or Shurflo ) use with various nozzles, and even at moderately sized nozzles those 160-200psi pumps were barely struggling to achieve 80psi or so...and that's not taking into account boost pressure, which could see actual pressure to inject liquid down to 50-60psi depending on boost.

As for the last comment about pre-turbine injection. All reports state this will help compressor efficiency and with suitable nozzle and placement there is no risk whatsoever to the compressor.
There is a very long discussion on the Aquamist form about this.

Atomic

iTrader: (37)

I am calculating the flow based on the nozzle rating flow at a given pressure. The nozzles I used were rated for 14gph@100psi, so given that you can figure out the flow at any pressure by bernoulli's principle. I did use methanol and not water when testing so the specific gravity is taken care of.

I accounted for sparying into a pressurized chamber by subtracting out the boost pressure from the nozzle pressure. If you look in the spreadsheet you see there are several tables of data, the "corrected pressure across nozzle" is subtracting out the boost. Secondly spraying atomized fuel into a pressurized chamber is generally a bad idea

What I essentially created was a pump flow map. Nobody seems to want to publish theirs so I made my own.

My main point of linking to the thread I made was to really double check the voltage the pump is getting so you can be sure its doing what its supposed to.