1320

iTrader: (6)

Did some testing...

car info......540 ci bbc with f1r procharger. fast system for logging.

10 psi, no water or meth. Iats would start at 122, instntly climb to 155 then climb as high as 190 ish on a pass.

water only.....14 jet and 7 jet two nozzle. iats climb slowly, to 150's on pass, and stay near 120's for a few seconds instead of climbing instantly.

water only two 14 jets. Iats go to 127 on pass. (car seems to be making more torque and hp, not verified with dyno)

tank drained, 50/50 distilled water and meth. Iats go drop to 101 on first pass.
Second pass iats drop into the 90's which is outside ambient (not under hood ambient)

So basically a 100 degree drop SO FAR.....

On was 2.5 psi all in at 10 psi..

lemons12

iTrader: (71)

98 turbo ss, 99 turbo camaro 10.20@133 stock short block, 89tta, 87 turbo camaro, 54 henry j turbo, 98 twin turbo ram 3500, turbo Hayabusa

Fan of turbos?

Nice drop.... 540CI!

jason02Z

iTrader: (10)

wow 100 degree drop is good..where are you spraying it and is it carb or fuel injected

98Camarod

iTrader: (43)

Do you like running more timing, boost or both with the meth?

1320

iTrader: (6)

I like both. Because this is a blower car, I havnt made any changes yet. Its been running straight 91 with no help for awhile.

I tested with one nozzle pre intercooler, and one post, then moved to both post intercooler, 12 and 24 inches before the throttle body. Its injected with a fast, and a 102 mm tb with the ait sensor about 4 inched pre tb.

Its close now for a pulley change.

darkhorizon

How do you know that water isnt just collecting on the temp sensors, and that the air temps are still not much higher?

jetttstream

iTrader: (7)

Interesting.

Johnv

Good stuff.

Try it with straight Meth and report back to us.

1320

iTrader: (6)

If i did it correctly....

airflow= 540x6500x0.5xEv where Ev =.80 (for 6500rpm) / 1728

= 812.5 cfm NA at 6500 rpm

airflow at boost = na x pressure ratio/14.7 = 1365 cfm or 94.34 lb/min


which converted to the 3.5 inch inlet pipe before the throttle body equals 232 mph in the pipe.
These are just quick 3.5 steel pipes, and after testing I have plans of going to atleast a 4 inch inlet that would lower airspeed to 177mph, but I doubt that will make any difference to the water/meth. The tb is about 4 inches, so the air speed is slowing down and pressure is dropping slightly from the 3.5 inlet pipe, but I take the map sensor reading from the back of the tb hat, so the air speed calcs should be slightly higher since pressure ratios should be slightly higher then estimated.

So I dont have proof water isnt building up on the sensor, but I dont think the surface tension of water is greater then the forces impart by a 232 mph air speed.

Since the air temp exiting the intercooler is basically 200 degrees, I bet most of the water is instantly converted to steam. The meth goes in as fuel, causing a rich condition (as seen on the wideband) then slowly tune out fuel for the meth added, and reap the benefits of meth as well. Which will ultimately allow more boost and more timing without abby normal (engine killing) combustion, and in the end, more power, more reliably.

Beaflag VonRathburg

iTrader: (176)

What kind of intercooler setup are you using? I could see meth being a huge help for an inadequate intercooler setup like an ebay 4 inch core on a something like this. If you are running something like a 2000hp A2W core, 8 gallon ice tank, and seeing 100* drops that would be amazing.

1320

iTrader: (6)

I did an intercooler test on the dyno.....I wont post the results because they are simply inconclusive. not the results I expected at all. Currently in this application it uses what I consider a far to small procharger intercooler that they claim is just fine and sold with the f1r (air to air)..

One of the tests on the dyno was a 3 inch ebay intercooler, back to back with the procharger intercooler......the ebay intercooler made 5 more rwhp but more testing is needed. The test was so strange infact Im trying to come up with a way to actually test an intercooler accurately. This has of course led to us making our own custom intercoolers now.

darkhorizon

Remember that with the water/meth being introduced, you are now displacing volume (similar to EGR function), and that you will in turn decrease turbo speed possibly reducing airflow as well (as shown by the rich condition both under water injection, and mixxed/meth injection).

Which EBay intercooler are you using? I have ran this ebay cooler a few times now with 700-800cfm setups, and I get 3-5C temp rise over a quarter mile run.

http://cgi.ebay.com/ebaymotors/CXRac...Q5fAccessories

it has been severely modified as the end tank design is severely flawed (you basically get no water flow over the core, as the cores are not split down the center, it requires a full cross flow conversion to be done, with 2 inlets and 2 outlets.)

1320

iTrader: (6)

My testing is with air to air only so far. I agree that the water and meth displaces air but not with the outcome. The water cools the charge, making it more dense. Perhaps enough water can go in to make it a dead heat, at weather it displaces air or becomes more dense though. Either way the charge is cooler and less likely to detonate. With meth, it goes in as fuel, causing a rich condition, but its mass is greater then that of burned gas, so with a turbo car, it ussually spools faster due to the increased exhuast gas volume of burned fuel.

The meth also increases fuel octane and lowers iat temp to control pre ignition. It raises the cylinder temp though at the time of burn so it generate more power then gasoline.

Currently with the procharger intercooler (air to air) and water meth, Im roughly 25 degrees under ambient. I logged 122-125 inlet temps (under hood) and with water meth at 50 % under 100.....I think I saw 97 at the end of the run.

Air to water would be some interesting testing, as from my intial test of the 3 icnh ebay air to air, its likely that there are some serious problems with nearly every air to waterthat I ve seen.