Confused a bit
 

Ok I’m confused about some things.

Ok 14.7 to 1 is stoke.
15 to 1 is lean.
13 to 1 is rich.

WTF is lambda?
1.0 is 14.7 to 1
So .9 is ?

What runs hotter advanced ignition or retarded ignition? I think retarded but to advanced causes knocking.

What runs hotter lean or rich? I think lean

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Re: Confused a bit
 

14.7:1 is STOICH (STOICHIOMETRIC RATIO)
15:1 is just a little lean...18:1 is stupid lean
13:1 is on the rich side...10:1 is PIG rich

Lambda = sensor output

Retarded runs hotter because the gasses are still burning in the ex. mani

Lean runs hotter due to less fuel absorbing the "latent heat" of the air/fuel charge

Post porn

Re: Confused a bit
 

its STOICH for stoichiometric
http://www.answers.com/stoichiometric&r=67

A lambda of 1.0 is stoich...what .9 lambda is depends on what gas you are reading. This varies...

Both advanced and retarded ignition can run hot...it all depends.

Leaner usually burns hotter, because there is a more complete burn and less unburnt "vapor" to cool the temps down.

Again this is all relative to a lot of different variables when you are talking about this stuff.

Re: Confused a bit
 

Ya that’s why I get confused it all depends.

One more higher compression or lower compression? I hear lower puts more thermal lode on you cooling system but higher runs hotter compression temps.

It just all is case specific, ignition timing, air/fuel ratio, compression, cfm of a turbo, cam overlap and lift, cam timing even spark plug heat range and gap.

I’m just reading a couple of books some use lambda, air fuel and some talk about volumetric efficiency. Read a couple of pages that stated a 12 to 1 is lean ---- my mind all up.


Any good books you all have read about how to tune? How did some of you get into tuning? Do thy have classes?

Re: Confused a bit
 

wo wo wo take it easy buddy. :D you are puking all this crap..

what are you talking about higher compression or what ever???. if you want to learn how to tune. either pay (EFI101.com)
or read, read, read.

http://www.hondata.com/stech.html thats a nice place for you to start. read the tunning guides.

lamda its just the point at witch all the fuel gets consume by the motor.
14.7 particules of gas per every one of air = lamda 1.
6.4 particules of methanol per every one of air = lamda 1.
get it??