Torque converter lockup

[shapiros]

I am interested in having my truck shift into "overdrive" at around 45MPH. Is this the same thing as the H&S torque converter lockup?

Thanks
Sig

[08stroker250]

This is the typical shift pattern of the 5R110W

1-2, 2-3, 3-5, 5-OD, Lock-up

[KTMotoRider1]

Question for you 08stroker250...or any one who has the answer, I understand that the Spartan 210 heavy tow tune locks the converter at 35 mph...is it Locking in 3rd gear?? or 4th?

[08stroker250]

The 210 Tow locks up at 45 mph on my truck.

[shapiros]

Originally Posted by KTMotoRider1

Question for you 08stroker250...or any one who has the answer, I understand that the Spartan 210 heavy tow tune locks the converter at 35 mph...is it Locking in 3rd gear?? or 4th?

Good question. Will the torque converter lock in any gear?

Sig

[AKpowerstoke]

my converter locks up at 45 mph with the idp tune also

[shapiros]

It amazes me how questions are NOT answered, just "danced around". And mostly by the sponsors of these forums who SHOULD know the answers. Anyway, asked the question directly to H&S and Casey Shirts provided a prompt reply that made perfect sense. For everyone's edification below (complete etrail, bottom to top):

That 100% depends on many factors including gear ratio, tire size, transmission, throttle position, load, etc.

I suggest trying it to see how you like it.

Thanks,
Casey

From: Sigmund Shapiro [mailto:sigmund.shapiro@rdasol.com]
Sent: Wednesday, October 27, 2010 6:42 PM
To: casey@hsperformance.com
Subject: RE: MiniMaxx

Thanks Casey. So, it WILL shift into OD at 45?

The rational is I have about 20 miles of 45-50MPH driving per day. Currently, it stays in the 2k RPM range. Just looking for the best MPG possible.

Thanks Sigmund

------Original Mail------
From: "Casey Shirts" <casey@hsperformance.com>
To: "'Sigmund Shapiro'" <sigmund.shapiro@rdasol.com>
Sent: Wed, 27 Oct 2010 18:10:24 -0600
Subject: RE: MiniMaxx

The 45HP torque converter lockup is going to be the lowest OD files we have.
Feel free to download the file from our site and give it a try.

I would not recommend anything lower than that, as you will start getting
surging. Some guys, depending on their tire size, will get surging with the
45MPH file. The turbo will be on the verge of spooling in OD at that speed,
and will be constantly in the state of spooling/unspooling.

Let me know if you have any questions.
Casey

[sjl2725]

I don't like to tow with the "tow/haul button" activated, but I occasionally do going down a hill for the gear reduction. Jeff recommended many times to always use the tow mode, so I've been experimenting with it. (My trailer is only 4k lbs)

...But I have noticed that with the tow/haul button activated the TC locks up in 5th as well as OD. At least that's what the dashdaq says. WHich is all well and good, but it seems that in tow/haul mode, most of the shift points are at a higher rpm- which is why I don't like it.

PS, I run the 250 tune. The early lockup is cool in the 210 tow, during my daily commute, its just at that spot where it is in and out of locking constantly. Maybe I need to give it another chance.

[KTMotoRider1]

I thought it was 35 mph??? wierd.. my enhanced tunes already lock at 45 so I gues that means there isnt much use for the 210 tow tune??

[08stroker250]

Originally Posted by KTMotoRider1

I thought it was 35 mph??? wierd.. my enhanced tunes already lock at 45 so I gues that means there isnt much use for the 210 tow tune??

It has safety parameters built in to it.