When Decelarating , Fuel Still Going? People R Saying U Have 0 Duty On Decel. Any Way To Increase The Fuel On Decel....lots Of Turbo Cars Trow Lots Of Fuel On Decel To Cool Of Combustion, Worndering If I Got Do That On My Na Car..

 

No fuel on decel untill ~1500 rom is reached. Its better then "throwing lots of fuel on decel", the cooling system is still working with no heat load.

 

Since heat is a function of how much power is being made, why would having an engine wind down on it's own with little or no fuel going to it and hence not making any power need combustion temps to be cooled down? It's not making much heat (relatively speaking) at that point.

 

Almost understood what you mean but not quite... All I know is a have a carburated motor and fuel is always going thru even during decel. (I think) lol

 

why not just water inject the motor and not worry:P

alot easier then trying to get fuel going on decel\ and will drop temps

 

I should have put for Fc3s's in my post, the carbed rotaries do have fuel flow on decel

 

i have fuel on decel. not very much, but a little since i premix.

 

how much is a lil? cause i premix too and i always try to throw it into neutral on decel because i know my OMP is no longer there doing anything. would be nice just for piece of mind haha

 

i've never done, or heard of anyone doing any extensive testing on how long you'd have to decel "dry" before you killed someting.

on my old bridgeport, i used an s4 front cover with 2 of the omp lines still attached, other 2 blocked off. i used the decel fuel cut and premixed on that one, but just the "idle" position with the 2 lines gave it enough oil to not hurt anything on decel.

on the current fd motor, i just kept leaning it out until the wideband didn't register anymore ~20someodd:1. i use 1 oz/gal these days. is it enough? errrruhhhh, i hope so

 

under heavy decel i see 17:1 to 18:1 maby a lil more however i dont pay to much attention to the wb while slowing down

i run a cosmo re with stock omp unplugged which is suppoto default to 50% as im told and premix a few oz's a tank

 

my wideband reads to 19.9.......which is what i'm seeing at decel