Dr.drivability
9 second wannabee
- Joined
- Oct 1, 2005
I understand what you are saying, but It was two VERY reputable vendors.Who told you that? when the alky under pressure leaving the nozzle and hits the heat it turns from a liquid into a gas.
I understand what you are saying, but It was two VERY reputable vendors.Who told you that? when the alky under pressure leaving the nozzle and hits the heat it turns from a liquid into a gas.
I am curious to know have you noticed any differences in the data you get since removing the powerplate? You say you dont think it wasn't hurting or helping. Are you using a stock doghouse? Are you using a stock shortblock besides the cam? I don't have any intention in removing my PP, just wanted to see what made you want to try it? Good luck on the 9sec pass!
the only data i have is time slips where the car at the same boost level runs the same mph with or without the powerplate.i really don't want to get into a lot about the powerplate but i see it as a restriction at the level i am at right now.that's my opinion though. i have a Precision plenum to help clear the 4" intake pipe..the block has never been out of the car..it is completely stock.
DonWG ..that is very interesting about the alcohol..i am spraying a good bit but i don't think i am spraying that much i have been wot a couple of times since i have my fuel straighted out and i have no knock. the car pulls like crazy up top.....Bob
Just cause your Knock sensor is not going off,dont think for a second that it not detonating at that level(30#s)
i think Bison was running c-16 and alcohol...i'm sure he wasn't getting any knock. mine could very well be getting knock with the 93..lets see how many passes it will make before it gives me a rod ...
Someone willing to lay his engine on the line for the sake of science. A man after my own heart. Just don't forget to keep us updated.
C-16 does much to help with the detonation limit of the gasoline. It does nothing to control the auto-ignition limit of the alcohol.
Exactly! I sure would like to see people learn to tune without a knock sensor. Maybe that's not practical with a petrol engine though.
Since methanol really doesn't detonate, I've always tuned without a knock sensor. If I depended heavily on a knock sensor and it did pick up something, it would already be too late.
Well, in my case, my learning experience was expensive. You carefully track a/f ratios, timing, boost, a lot of simulator work, and blow up a few engines to test your fueling limit theories. After all that, you have a pretty good idea of where your limits are. The latest engine has lasted well.I Like that idea, even though it does sounds DANGEROUS..lol.
but how do you tune without a knock sensor????
spark plug checking after every run or something else.....what?
anyhelp appreciated..
Well, in my case, my learning experience was expensive. You carefully track a/f ratios, timing, boost, a lot of simulator work, and blow up a few engines to test your fueling limit theories. After all that, you have a pretty good idea of where your limits are. The latest engine has lasted well.
Plug reading is very important, but most of you probably don't install fresh plugs to get good readings like you should. Trying to read old plugs is useless,... unless you're just looking for melted electrodes.
edit: For instance, I've learned that if I burn the plating off of one thread on the spark plug, my combustion temps are safe. If I burn 1.5 threads, I'm still safe. If I burn 2 I start looking to change the fuel map. If I burn 3 threads, I'm either lucky I made it through the run, or I hurt something and I'm just confirming that the combustion temps were too high. :frown:
Light plated plugs such as NGK and Champion work real well for that type of plug reading. I also use a plug with a very short ground strap. A hot groud strap will set off the methanol.
Thanks, Don, like i said sounds like a good idea.. Plugs arent that much so id say that they're definatley worth it...
What I'd REALLY like to know is... what's the limit when running straight C16 ?
How much boost and timing will it tolerate ?
I've always tuned without a knock sensor. If I depended heavily on a knock sensor and it did pick up something, it would already be too late.