HARD shift when passing

Dixie Design · #1 Tue, March 17th, 2009, 07:08 AM

Not sure if this is normal or if I should be concerned.

Was heading down a two lane doing 60-65 and went to pass someone. Mashed the gas pedal and my truck dropped down to 2nd for a brief second, high RPMs, and then to 3rd. The transmission shift felt VERY hard, not firm but hard. That normal or should I be concerned?

Shorse · #2 Tue, March 17th, 2009, 09:41 PM

try it again, you may have been at just the awkward speed to make it think 2nd was okay to go to.... how fast were you going?

Dixie Design · #3 Wed, March 18th, 2009, 07:15 AM

Yeah, tried it 4 or 5 times in the hour that I was on the road. Same results. Was running about 60 when I'd drop the hammer.

***88Racing*** · #4 Wed, March 18th, 2009, 08:10 AM

Maybe that's the 15 rwhp you are feeling from the ud pulleys?

You could go into the gryphon and change firmness setting if you wanted to? Or even the rpm shift point?

Lars

Btw nice specs w/ vids+sounds

A+

Dixie Design · #5 Wed, March 18th, 2009, 12:43 PM

Quote:

Originally Posted by 88Racing

Maybe that's the 15 rwhp you are feeling from the ud pulleys?

You could go into the gryphon and change firmness setting if you wanted to? Or even the rpm shift point?

Lars

Btw nice specs w/ vids+sounds

A+

I love the shift firmness on normal shifts, it's the downshift from locked 4th to 2nd that's such a firm, hard shift. I hate to mess with the shift points too, other than this one instance, I LOVE everything about the Gryphon! Maybe Bill can chime in when he takes a break from the insanity.

OH and thanks for noticing and commenting on my sig

Dixie Design · #6 Wed, March 18th, 2009, 03:59 PM

I see Bill and Corey are back. Maybe the Mad Doctor can chip in

***Power Hungry*** · #7 Wed, March 18th, 2009, 04:18 PM

What we might do is:

1) Address the Shift Torque reduction on the 4-2 and 3-2 shifts to soften then up a bit.
2) Lower the 3-2 shift point at WOT to eliminate going form 4 to 2 on the downshift.

One or both of those should fix the issue.

Dixie Design · #8 Wed, March 18th, 2009, 04:30 PM

Quote:

Originally Posted by Power Hungry

What we might do is:

1) Address the Shift Torque reduction on the 4-2 and 3-2 shifts to soften then up a bit.
2) Lower the 3-2 shift point at WOT to eliminate going form 4 to 2 on the downshift.

One or both of those should fix the issue.

Sweet, that something I can do, or do you need to do Bill? If you need to do it, DO NOT rush. I know you have a lot of catching up to do and a lot of other anxious customers. Thanks!

OH, and as a side note, I'm mainly just concerned that it's not "right." Possibly going to cause damage if repeated. If that's not the case, I'm good with it as-is!

***Power Hungry*** · #9 Wed, March 18th, 2009, 05:04 PM

I can't say if it's hurting something or not, so I'd just rather not take that chance... ya know? If it's not right, it's not right.

The shift points you can handle. The torque reduction I need to handle.

I'll give you a shout as soon as it's done.

Dixie Design · #10 Wed, March 18th, 2009, 05:42 PM

Quote:

Originally Posted by Power Hungry

I can't say if it's hurting something or not, so I'd just rather not take that chance... ya know? If it's not right, it's not right.

The shift points you can handle. The torque reduction I need to handle.

I'll give you a shout as soon as it's done.

10-4