jasonp

I was wondering if anyone could give me some info. on tuning an allmotor setup with meth. using speedpro. I heard that you can't use the O2 from speedpro to do your correction. I hope someone can help..

tony1

The speed pro o2 is a lambda sensor so you can use it to read methanol a/f ratios. You need to use the lambda option rather than the a/f option in the speedpro.

ParrisEngineDynamics

Tune your car with a lambda sensor (Motec lambda sensor is usually the industry standard) and after the car is is tuned hook up the speed pro 02 sensor and data log a dyno pull. As long as the sensor does not read below 9.2 at any time you will be able to use the open loop. Try to keep the lamba at about 5.8 for an all motor car on meth and injector duty cycle at 80% or lower. Remember that some all motor cars may not be able to work in the open loop. Meth is easy and fun stuff haha. Good luck.

Suprdave

Where's the best power made on meth for all-motor?


Suprdave

ParrisEngineDynamics

Every motor is different but I personally saw huge gains across the whole RPM band. 5700+ on our motor.

Suprdave

I meant at what Air\Fuel Ratio?

ParrisEngineDynamics

I know it might sound kinda crazy but tune your car using a lambda meter and then find out what your speed pro o2 reads after the car is tuned and that is your target A/F. ie after the car is completely tuned using a motec lambda meter we hooked up the speedpro o2 and we found that the A/F was around 10.5 that does not mean that every car should have the same a/f ratio for optimum power. That is how we found our target o2 for the speed pro.

jasonp

thanks for the info. I will be getting new injectors real soon and I will start testing with the meth.. I will let you know how things go..

MaxBoost

Wow, that's intresting. I guess it just shows how different meth and gas are! 10.5:1 on a gas motor would probably leave alot of power potential just by leaning it out...

Good thread. More info on meth should be on this forum.

TurboDANDEE

Bump for cornbread

bambooluv

hehe I guess all those talks with you finally found a way threw huh.Goodluck jason-pdang

TurboDANDEE

Oh ya Jason, did u run your car at IDRC? if so, how it do?

Anne

the bear with the little red hat knows all... hahaha

Suprdave

Jigga Who?

Finest

OT, but how much "maintenance" is required when running meth? Do you have to clean EVERYTHING after each race? Or can you do it after a few events?

And what specific components do you need to keep maintained? TIA!

ParrisEngineDynamics

At the end of each race day you must flush the system out and get rid of all the meth. Then run gas through the lines and injectors. You also must keep a close eye on your oil although going through the program and cleaning up the fuel maps at all RPMs will help. However, many racers avoid that step and that is one of the reasons why they have so much water in the oil. Oh yeah 98ctr the components you need is a 5 gallon waste can and a 5 gallon can of race gas.

jasonp

ttt

MotorMatrix.com

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MaxBoost &raquo;</TD></TR><TR><TD CLASS="quote">Wow, that's intresting. I guess it just shows how different meth and gas are! 10.5:1 on a gas motor would probably leave alot of power potential just by leaning it out...

Good thread. More info on meth should be on this forum.</TD></TR></TABLE>

from the research we have done on our meth car that is boosted, A/F should be around 6-8:1.thats just crazy to imagine mamking power at that A/F. We learned a hard and expensive lesson running the car at 12:1 on Meth.

lugnuts

I think they are talking about reading the meth with a standard uncorrected wideband o2. Did you see the article in Modified mag a few months back? They actually recommended 13-1. Also, my buddy with an all-motor alky burning carb'd rabbit went to our dyno, the air/fuel read around 13 - even though we all know it is running 4.8-5.3 at WOT.

Our Autronic exhaust analyzer has different settings for different fuels, Petrol (gas), Alcohol, Diesel, and LPG(Propane).
If I ahve a gas caridling at 14-1, and switch the analyzer to alcohol setting, the numbers go into single digits.

EFIGUY

yeah, what he said

ParrisEngineDynamics

I thanks for sparing me from responding.

lugnuts

hehe, Ben stay off the - it has been proven to cause rally car incidents (and dents) haha

question: with alky are you guys running gas thru it to clean it out after a race day? people are tellin me that if you go back and forth from gas to alky on the same day that the o-rings will die shortly.

ParrisEngineDynamics

Not switching back to gas after every race will cause your o-rings to corrode.
If you leave methanol sitting in your fuel pump and injectors, it will corrode your seals in the fuel pump and o-rings. If the pumps and seals were meant for gas then there is no reason that going back and forth will cause them to deteriorate faster. Just don't leave methanol sitting in the lines or pumps.

EFIGUY

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lugnuts &raquo;</TD></TR><TR><TD CLASS="quote">hehe, Ben stay off the - it has been proven to cause rally car incidents (and dents) haha

question: with alky are you guys running gas thru it to clean it out after a race day? people are tellin me that if you go back and forth from gas to alky on the same day that the o-rings will die shortly.</TD></TR></TABLE>

LIES! ALL LIES!!!

Actually there is a company called "ProBlend" that makes an additive that will prevent corrosion to seals, o-rings, and lines etc......I've had tremendous luck with it.

Also my best friend has that S2000 Powered sandrail that is Turbocharged on alcohol........we tuned it up nicely with the 'ol Autronic SMC and he almost never has milky oil and rarely ever flushes the lines.....still looks good so far!

Good tuning goes a long way!
That's outta be enough beer to have an incident!