Fbodyjunkie06

iTrader: (10)

Wow, just wow....I'm not even going to try and tell you why your wrong.

Fbodyjunkie06

iTrader: (10)

Dunno if you can view it in window photo viewer like I can to make it bigger, but there it is.

buick_lsx

go ahead...im always trying to learn

but my timing tables were just the same on my stock motor that lasted 2.5 years this way, never knocked on that motor and never had any problems, only pulled it out cause my forged motor was ready

Fbodyjunkie06

iTrader: (10)

I do not question your motor has or had any knock while on the dyno with the tune you were running, on the street, track where ever.

Again, not saying that yours isn't fine, but just because yours is fine that way does not mean his will.

An average AFR out the tailpipe or in the collector or down-pipe isn't telling you what's going on inside each cylinder. That is why you have to read your plugs at least 2 or 3 times with a known tune-up so you have something you can go back to and at least start from and adjust to get perfect.

The only way you can get close to be able to see what's going on in the cylinder and it is still by no means reading plugs, is having 8 individual wideband O2 sensors, one in each primary. Even then you need to pop the plugs out and read them so you know, "my car's plugs looked clean and timing on strap was before bend at 11.9 afr, 13* timing, and 14psi boost". Note whatever octane fuel your using and how much methanol so you know when you see that number on the wideband at 11.9 it's not just a number you heard was good to shoot for, it's now a number that you know your engine wants and runs best at.

I'm using those figures above purely as examples. The fuel ring on the bottom of the porcelain will tell you how rich or lean your motor is running as will the timing strap tell you how far advanced or retarded your timing is.

So like I said in the beginning, there is nothing wrong with your set-up, but just because he is running methanol injection and you put your car on the dyno and did something doesn't mean he can too.

AFASTYZFR1

iTrader: (55)

18deg with a maxed out Alkycontrol Kit

LS1x2

iTrader: (11)

I got some of bugs worked out on mine. Here are my results with 93 octane+meth. It is quite a bit of meth with 2 m15 nozzles. 8.8:1 compression, 15* timing, and 20psi. 20 psi was achieved via creep due to wastegate placement/open exhaust. I plan on putting a catback on and dialing in the eboost for a much better hp curve.



Hard to see the timing mark here, but it is a little before the bend on the tr7.



http://www.youtube.com/watch?v=QfjVxo4HSQM

crashly

^^^^^^
One of he better forum posts period..

BigRich954RR

iTrader: (1)

I read some of it. But if you guys read what the burn rate of methanol is vs gas then add in the amount of meth vs gas burned 10 A/F might be the ideal spot


yea yea water has no limit on oct so run your car on pure water see how that does. we run our engin on stuff that burns. water is wasted space

The Alchemist

iTrader: (19)

BigRich, I think the desired outcome has a lot to do with the executed approach. If you're looking to make as much power as possible, then yes, run all meoh, hell add some nitro while you're at it, but if you're looking to control how much heat is in the combustion chamber while maintaining the same amount of power, then a water/meoh mix is helpful.

35thsscamaro02

I ended up at 19 degrees of timing spraying duel 10gph nozzles pure meth. Made 668rwhp 565rwtq 6500rpm We played with the timing and that's what it ended up liking. Yes stock shortock and yes building a forged motor.

04BlackGmc

iTrader: (19)

20* single M15 nozzle Alky control kit.
668HP stock shortblock

Fbodyjunkie06

iTrader: (10)

I would like to know one thing.

How do you guys that are saying "It liked this amount of timing" know it really liked or wanted that amount, or are ya'll just throwing numbers out there, how do you know it liked or wanted that amount? Because it didn't knock? Because it knocked and then you pulled it back a degree or two?

Without pulling at least the 4 corner plugs out and checking those you will NEVER know what it wants, you will just be guessing.

35thsscamaro02

I asked my ls1 what it liked and that's what it said it wanted to be set at.

Monte4ever

iTrader: (2)

Now here is a damn good thread with very useful info. Im waiting for a good clear test and tune day at my closest track so I can pull me some plugs lol.

bad6as

iTrader: (17)

wow. so much reading

bad6as

iTrader: (17)

being that im one of the few that run no ic and i spray pure meth i find this read interesting. i target low 11s afr on pump 93 and dual 15s timing is middle of the road at 14 and boost is 12ish

Hi Volume

iTrader: (3)

im with ya on that one! Plus i dont want my car smelling like burnt McDonalds fries by going the e85 route.

Blackpanther99

iTrader: (8)

Just read the whole thread. I learned soo much I did not know