383_Stroker Returning To Dyno 11/23 -- Timing Experiments - Big Picts
Senior Member
Joined: 07-06-06
Posts: 873
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From: Indianapolis
TVS LSJ FTW!
YouTube - MVI_4458.AVI
http://www.youtube.com/watch?v=lOuofd0KZ2c
http://www.youtube.com/watch?v=tQSnpUNiaf0
http://www.youtube.com/watch?v=KyFIuBEPFfE
YouTube - MVI_4458.AVI
http://www.youtube.com/watch?v=lOuofd0KZ2c
http://www.youtube.com/watch?v=tQSnpUNiaf0
http://www.youtube.com/watch?v=KyFIuBEPFfE
Last edited by proZak; Nov 24, 2010 at 06:04 AM.
Lookin good! Some nice clean comparisons there.
Would you mind posting a table view of the timing table you made the best pull on? I would like to just compare it to some of my tables I have made. If not thats understandable
Would you mind posting a table view of the timing table you made the best pull on? I would like to just compare it to some of my tables I have made. If not thats understandable
I follow a theory called Max Torque Timing. I think it results in the best street tune.
Basically, you should be commanding your peak timing just before your engine makes peak tq. On the TVS, that is right around 4750. So if your peak timing is 25 degrees, you should be commanded 25 degrees in the cell before 4750. Whatever that is.
And ramp that timing a little harder and you will have much better TQ. Your HP numbers are right inline with most people on that setup. But your TQ is still behind.
If you are running 50/50 gasoline/E85 that should be plenty of octane to push the timing even harder.
I know there are going to be some people who will jump in this thread and say things like, "you could make a lot more blah, blah, blah..." Some people want you think that tuning the LSJ is rocket science. But it is not.
I would rather help you get there then criticize.
It looks like you have a pretty good street tune. The car must feel pretty good.
Basically, you should be commanding your peak timing just before your engine makes peak tq. On the TVS, that is right around 4750. So if your peak timing is 25 degrees, you should be commanded 25 degrees in the cell before 4750. Whatever that is.
And ramp that timing a little harder and you will have much better TQ. Your HP numbers are right inline with most people on that setup. But your TQ is still behind.
If you are running 50/50 gasoline/E85 that should be plenty of octane to push the timing even harder.
I know there are going to be some people who will jump in this thread and say things like, "you could make a lot more blah, blah, blah..." Some people want you think that tuning the LSJ is rocket science. But it is not.
I would rather help you get there then criticize.
It looks like you have a pretty good street tune. The car must feel pretty good.
I follow a theory called Max Torque Timing. I think it results in the best street tune.
Basically, you should be commanding your peak timing just before your engine makes peak tq. On the TVS, that is right around 4750. So if your peak timing is 25 degrees, you should be commanded 25 degrees in the cell before 4750. Whatever that is.
And ramp that timing a little harder and you will have much better TQ. Your HP numbers are right inline with most people on that setup. But your TQ is still behind.
If you are running 50/50 gasoline/E85 that should be plenty of octane to push the timing even harder.
I know there are going to be some people who will jump in this thread and say things like, "you could make a lot more blah, blah, blah..." Some people want you think that tuning the LSJ is rocket science. But it is not.
I would rather help you get there then criticize.
It looks like you have a pretty good street tune. The car must feel pretty good.
Basically, you should be commanding your peak timing just before your engine makes peak tq. On the TVS, that is right around 4750. So if your peak timing is 25 degrees, you should be commanded 25 degrees in the cell before 4750. Whatever that is.
And ramp that timing a little harder and you will have much better TQ. Your HP numbers are right inline with most people on that setup. But your TQ is still behind.
If you are running 50/50 gasoline/E85 that should be plenty of octane to push the timing even harder.
I know there are going to be some people who will jump in this thread and say things like, "you could make a lot more blah, blah, blah..." Some people want you think that tuning the LSJ is rocket science. But it is not.
I would rather help you get there then criticize.
It looks like you have a pretty good street tune. The car must feel pretty good.
I think it's actually peaking earlier than that (at one point i played with having it rise to 26* to redline after hitting 25* when it crested, but i finished off with it rising to 25* and holding there).. i think it might be reaching 25* at 4300 or so.. but i'll look once i have my laptop in front of me.
so the better result was holding peak timing from right before 4750 all the way out the top... I'm probly hitting the dyno again sometime in December and need to rework my afr and timing. With no meth and no e85, I set it to a flat 20* from 3k to 7k. I know thats way too soon but it sees no KR, and i bring in the fuel pretty rich at the same time.
Im trying to squeeze more out of the 80mm pulley and get it over 300 before I do other stuff to up the boost and cooling
Im trying to squeeze more out of the 80mm pulley and get it over 300 before I do other stuff to up the boost and cooling
