max timing.

[Area47]

question, has anyone, besides myself played around with the timing limits on the lsj? i figured id ask this here since i can't get a straight answer anywhere else.

my daily driver tune runs 23 degree's total advance. it starts at 14 degree's and just ramps up from there. nice safe for the insane heat we have here right now.

the "other" tune. starts at 23 degree's and ramps quickly to 25-26 degree's.

in short. the ceiling of the "usuable" timing. sure i can cram 28 degree's down it right now, but why. if it doesn't make anymore power, whats the point. my feeling is, 25.5-26 degree's is pretty much the limit on it.


whats everyone else's take on this.

[rlinbatonrouge]

I dunno. My watch resets after 12:00 every time. I can get a digital, switch to military time and get up to 24:00 but that's the best I can do.


(Basically, I haven't messed with HPT in so long that I couldn't answer the question intelligently)

[socalsilverRL]

how are you measuring timing?

from 2xxx rpm to 6500-7K rpm?

If you want to know how much timing you can run, get a EGT probe. Itll let you know if youve gone beyond "peak torque"

[Area47]

Originally Posted by socalsilverRL

how are you measuring timing?

from 2xxx rpm to 6500-7K rpm?

If you want to know how much timing you can run, get a EGT probe. Itll let you know if youve gone beyond "peak torque"

2k-7200 rpms

i have an egt. the timing is being "measured" in hpt.

autometer is sending me a new probe and harness because the one i have in the car is rather slow

[socalsilverRL]

^well...get the AFR's dialed in, then start adding timing till you knock, then back it down 2-3°. check your EGT at peak timing and see if its gone past 1350°, if it has, you are running too much timing. otherwise, youre fine.

and my autometer is slow as well...i wonder if they would give me a faster reading probe...

[Area47]

Originally Posted by socalsilverRL

^well...get the AFR's dialed in, then start adding timing till you knock, then back it down 2-3°. check your EGT at peak timing and see if its gone past 1350°, if it has, you are running too much timing. otherwise, youre fine.

and my autometer is slow as well...i wonder if they would give me a faster reading probe...

peak heat temps, as in the highest it has hit is 1450. 140 mph run, racing a friends twin turbo mark 7. cruise mode it sits abut 1300-1325. go wot it drops to 12, then creeps to 1425 at most.

this is runnin 25-26 degree's i can throw a shit ton of timing at the car {water injection} and get away without knocking. that isn't my concern right now. more or less trying to find the useful limit.

[BlkCSS]

Originally Posted by socalsilverRL

^well...get the AFR's dialed in, then start adding timing till you knock, then back it down 2-3°. check your EGT at peak timing and see if its gone past 1350°, if it has, you are running too much timing. otherwise, youre fine.

and my autometer is slow as well...i wonder if they would give me a faster reading probe...

please correct me here, but more timing would drop EGTs correct?

turbo car----
more timing= lower EGT
use less timing down low to raise EGTs and get turbo on spool faster thus
less timing=higher EGT's

edit---

on my with trhe blower i found no more HP on the dyno after 23deg.

[Area47]

Originally Posted by BlkCSS

please correct me here, but more timing would drop EGTs correct?

turbo car----
more timing= lower EGT
use less timing down low to raise EGTs and get turbo on spool faster thus
less timing=higher EGT's

edit---

on my with trhe blower i found no more HP on the dyno after 23deg.

there is a breaking point in timing and egt temps. you are correct on the turbo car part. well that really applies to any internal combustion engine.

guess the real way to find out is on the dyno. where gaining power ends and rod bearings start to suffer.

[jpapa]

Originally Posted by socalsilverRL

^well...get the AFR's dialed in, then start adding timing till you knock, then back it down 2-3°. check your EGT at peak timing and see if its gone past 1350°, if it has, you are running too much timing. otherwise, youre fine.

and my autometer is slow as well...i wonder if they would give me a faster reading probe...

I know you were an amateur tuner with your RL, but you seem to have a lot of input still in all of these tuning threads to make it sound like you're actively tuning a RL. Did you get your hands on a tuning suite for your Evo?

[Area47]

Originally Posted by socalsilverRL

and my autometer is slow as well...i wonder if they would give me a faster reading probe...

call them up and complain. not sure if it will work or not. it did for me, due to where i work