Meth to supplement fuel..
#1
Meth to supplement fuel..
I know everyone says not to do this... BUT I see everyone that is spraying meth with radix combos (42# injectors) have significantly lower injector duty cycles and more timing.
I want to run a 2.9 pulley, from a 3.1 I have now. Thoughts?
I want to run a 2.9 pulley, from a 3.1 I have now. Thoughts?
#2
High on diesel fumes
iTrader: (70)
I'm running a 2.8 pulley on my setup. My IDC's at 6300 RPM at WOT and 8.5 psi are about 120%....but I haven't been running lean....actually been running rich, like 10.5-10.7 AFR.
I'll be spraying meth again once I have some time to tune for it. I'm hoping to get my duty cycles back to a more comfortable level.
I'll be spraying meth again once I have some time to tune for it. I'm hoping to get my duty cycles back to a more comfortable level.
#4
TECH Senior Member
iTrader: (7)
I have a set of larger injectors I had planned on installing due to duty cycles nearing 100% with the 3.1 pulley I was running. I have not put them in. My IDC's with meth and 2.9 pulley, about 8.5 psi are in the 70's. If my meth injection fails I will go kaboom lean at WOT. The truck has never run better, even being rich in spots that I can't tune out. Meth injection has cured all the little spots of KR I would see occasionally and keeps the IATs more consistant. Leveling out the timing. The truck is not only faster it is consistanly faster.
I have not run it long enough to speak of blower wear. It is a pain for me to get the methanol, carry around spare, and remember to fill up.
I recommend it but do it right. A good kit. Knowing that if it fails chances are you are going to trash your engine. Knowing that you will have to tune for it. I would not do it without a wideband AFR gauge.
I have not run it long enough to speak of blower wear. It is a pain for me to get the methanol, carry around spare, and remember to fill up.
I recommend it but do it right. A good kit. Knowing that if it fails chances are you are going to trash your engine. Knowing that you will have to tune for it. I would not do it without a wideband AFR gauge.
#7
High on diesel fumes
iTrader: (70)
Originally Posted by dewmanshu
Crank your present AFR up to around 11.5 thunder and your idc should fall to around 105%. Then the meth will get it further down from there. IMO
I guess I'm trying to hit a moving target right now. If the meth levels out my IAT's I should be in good shape.
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#8
single digit dreamer
iTrader: (6)
you guys probably know this but there really is no such thing as 120% duty cycle. once it hits 100% that means they are wide open all the time also known as static(not moving).
i would guess i pulled 20-30% of my fuel after i turned my meth up. i know if i have a meth delivery problem things will get ugly fast but there are lots of parts on our trucks where if they fail at the wrong time the motor might go boom.
i would guess i pulled 20-30% of my fuel after i turned my meth up. i know if i have a meth delivery problem things will get ugly fast but there are lots of parts on our trucks where if they fail at the wrong time the motor might go boom.
#9
Moderately Differentiated
iTrader: (4)
Originally Posted by parish8
you guys probably know this but there really is no such thing as 120% duty cycle. once it hits 100% that means they are wide open all the time also known as static(not moving).
i would guess i pulled 20-30% of my fuel after i turned my meth up. i know if i have a meth delivery problem things will get ugly fast but there are lots of parts on our trucks where if they fail at the wrong time the motor might go boom.
i would guess i pulled 20-30% of my fuel after i turned my meth up. i know if i have a meth delivery problem things will get ugly fast but there are lots of parts on our trucks where if they fail at the wrong time the motor might go boom.
#10
9 Second Club
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NOW (after popping a motor) I have my dynojet wb turn on a warning light and set off a siren if my a/f goes leaner than 12.0:1 over 3000 rpms....hopefully that will prevent a blown motor if a pump fails or the alky fails