GenI coyote shift points
03-26-2019, 04:17 PM
#11
Originally Posted by rojizostang
the plan for now is to tweak the shift points upward based on the information I already supplied, and then log the runs and see if there's room for more improvement, all things considered
honestly thanks to everyone in the threads I've started lately...TxRipper, BadCon, and engineermike, Blue5.0 and yonson. y'all have helped me decide how I want to move forward.
at some point I envision building a shortblock with boss or manley rods and good pistons, upgrading the fuel pump/system and then again spinning the blower a little faster....but that's a little ways down the road.
honestly thanks to everyone in the threads I've started lately...TxRipper, BadCon, and engineermike, Blue5.0 and yonson. y'all have helped me decide how I want to move forward.
at some point I envision building a shortblock with boss or manley rods and good pistons, upgrading the fuel pump/system and then again spinning the blower a little faster....but that's a little ways down the road.
03-26-2019, 05:58 PM
#12
As I mentioned in another thread, you have a good bit of performance on the table based on your times and shift points from our track day. When I was going through tune revisions in the weeks leading up to San Antonio, I had one where the shifts in sport mode were occurring around 6500rpm in every gear. When I used my dragy to make a 1/4th run, it was around 12.0. I switched to normal mode and the shift points were now around 7500rpm in 1-2, 2-3, and 7300rpm in 3-4, and that run was an 11.6**
Nothing changed but being able to rev out the gears a little more. Its all about area under the curve, and on my truck I'm making peak power at 5500rpm and holding that past 7000rpm. That's a lot of power left on the table if I was shifting at 6500rpm or even lower in your case.
I can't tell you whats safe or not, but at least 7200rpm in 1-2 and 2-3 would be ideal, then 7000 for each gear after that. If you are feeling bold with that new viscous damper, maybe 7500 for 1-2 to really take advantage of that first gear. Its a balance between that magical low 11's time slip, and a grenaded engine lol.
Nothing changed but being able to rev out the gears a little more. Its all about area under the curve, and on my truck I'm making peak power at 5500rpm and holding that past 7000rpm. That's a lot of power left on the table if I was shifting at 6500rpm or even lower in your case.
I can't tell you whats safe or not, but at least 7200rpm in 1-2 and 2-3 would be ideal, then 7000 for each gear after that. If you are feeling bold with that new viscous damper, maybe 7500 for 1-2 to really take advantage of that first gear. Its a balance between that magical low 11's time slip, and a grenaded engine lol.
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rojizostang (03-26-2019)
03-31-2019, 09:29 PM
#13
Senior Member
As I mentioned in another thread, you have a good bit of performance on the table based on your times and shift points from our track day. When I was going through tune revisions in the weeks leading up to San Antonio, I had one where the shifts in sport mode were occurring around 6500rpm in every gear. When I used my dragy to make a 1/4th run, it was around 12.0. I switched to normal mode and the shift points were now around 7500rpm in 1-2, 2-3, and 7300rpm in 3-4, and that run was an 11.6**
Nothing changed but being able to rev out the gears a little more. Its all about area under the curve, and on my truck I'm making peak power at 5500rpm and holding that past 7000rpm. That's a lot of power left on the table if I was shifting at 6500rpm or even lower in your case.
I can't tell you whats safe or not, but at least 7200rpm in 1-2 and 2-3 would be ideal, then 7000 for each gear after that. If you are feeling bold with that new viscous damper, maybe 7500 for 1-2 to really take advantage of that first gear. Its a balance between that magical low 11's time slip, and a grenaded engine lol.
Nothing changed but being able to rev out the gears a little more. Its all about area under the curve, and on my truck I'm making peak power at 5500rpm and holding that past 7000rpm. That's a lot of power left on the table if I was shifting at 6500rpm or even lower in your case.
I can't tell you whats safe or not, but at least 7200rpm in 1-2 and 2-3 would be ideal, then 7000 for each gear after that. If you are feeling bold with that new viscous damper, maybe 7500 for 1-2 to really take advantage of that first gear. Its a balance between that magical low 11's time slip, and a grenaded engine lol.
04-01-2019, 06:58 AM
#14
Senior Member
Thread Starter
I want to go fast, but stay south of a grenaded engine...anyway I've got the log file all set up and ready to go, and the shift points tweaked a bit for the next trip to the track. Hopefully the hot weather holds off for a few weeks in order to find out what it can do in good weather.
Tasca had to special order the damper. It hasn't even shipped yet, but hopefully soon.
Tasca had to special order the damper. It hasn't even shipped yet, but hopefully soon.
04-01-2019, 08:10 AM
#15
Senior Member
I want to go fast, but stay south of a grenaded engine...anyway I've got the log file all set up and ready to go, and the shift points tweaked a bit for the next trip to the track. Hopefully the hot weather holds off for a few weeks in order to find out what it can do in good weather.
Tasca had to special order the damper. It hasn't even shipped yet, but hopefully soon.
Tasca had to special order the damper. It hasn't even shipped yet, but hopefully soon.
And you need opgs and a cs sprocket.
04-01-2019, 08:59 AM
#16
Originally Posted by rojizostang
I want to go fast, but stay south of a grenaded engine...anyway I've got the log file all set up and ready to go, and the shift points tweaked a bit for the next trip to the track. Hopefully the hot weather holds off for a few weeks in order to find out what it can do in good weather.
Tasca had to special order the damper. It hasn't even shipped yet, but hopefully soon.
Tasca had to special order the damper. It hasn't even shipped yet, but hopefully soon.
04-01-2019, 01:28 PM
#17
Senior Member
Thread Starter
I forgot to ask him, actually. With the 4.10 gears it spins up pretty quickly and was shooting past the prescribed 4200 rpm shift point (1-2 shift) to 5800 rpm. Without repeating the whole story about how the shift points were set on the dyno, he only moved them enough to stay in a safe range, however I actually didn't remember to ask the specific numbers because I'm more interested in what it does on the next trip to the track when I run a datalog.
I'm figuring eventually I'll be asking for a 7000 to 7200 rpm shift point.
I'm figuring eventually I'll be asking for a 7000 to 7200 rpm shift point.