next step GOAL: 320-375whp

[1SloColt]

Awesome, awesome, awesome! Thanx for the quick rundown of knock control, flame front, and basic fuel properties .

Actually, I was not 100% accurate about the burn rate. Burn rate stays constant the entire time, no matter which timing or AFR you go with. For some reason I was relating the burn rate to the amount of time it takes to burn off all the fuel.

As for flame fronts, your fastest fronts are from 11.7:1 to 13:1 AFR. Richening things up, like on pump gas to avoid knock, works because you are slowing the flame front, so the peak cylinder pressures occur after a longer period of time, not necessarily at TDC. The AFR at the time of combustion determines the flame front speed. I have seemed to run across the information that the fastest flame front is around 12.5:1, which means thats where a lot of power is gonna be had, but I know that a lot of DSMs tune for quite a bit richer AFR than 12.5:1. I'm gonna have to talk to my AEM tuner to see what he says about that, .

 

[trebornash]

WEITH 1111 your not running a front mount w/ your s16g?

 

[weith1111]

WEITH 1111 your not running a front mount w/ your s16g?

That's affirmative. Still on the crappy sidemount. It doesn't appreciate 20psi. And it's the #1 reason I'm not over 300whp as well.

No worries, springtime is rebuild time! FMIC, blow-thru and hopefully DSMlink going in. Along with a new pump cause my supra pump took a dump. I've got an evil knock I need to sort out, hopefully its a rod.

 

[dsm-onster]

WEITH 1111 your not running a front mount w/ your s16g?

I ran along time with a stock sidemount and boost creap to 18+ psi with a small 16g. At this level, the small 16g is intensily efficient. He's probably running arount 77% efficiency from this little beast. So the air is not being heated up as much as one may think... But I ran this for a long time and upped the boost to 22+ psi on my stock injectors and pump with just the addition of water injection. The SMALL 16g is much more efficient at this boost level with stock cams and stock bore/stroke than people think. It moves quite a bit of air, but it can be cooled enough by a stock sidemount as the air is not so hot in the first place.

 

[dsm-onster]

That's affirmative. Still on the crappy sidemount. It doesn't appreciate 20psi. And it's the #1 reason I'm not over 300whp as well.

No worries, springtime is rebuild time! FMIC, blow-thru and hopefully DSMlink going in. Along with a new pump cause my supra pump took a dump. I've got an evil knock I need to sort out, hopefully its a rod.

Evil knock?

this is my thread I just started. I don't know if it will help... A bent valve is better than a spun rod bearing! Chances are you have to resurface the crank then. And that means pulling the crank . I hope you just have a bent valve.