trans problems with gryphon

twintips_17 · #1 Sat, May 9th, 2009, 01:15 AM

I was just reading this thread and i was curios on what the gryphons shift firmness in for the canned and unaltered tunes was for the tow and the performance tunes?

Anyone???

***Jackpine*** · #2 Sat, May 9th, 2009, 11:41 AM

Quote:

Originally Posted by twintips_17

I was just reading this thread and i was curios on what the gryphons shift firmness in for the canned and unaltered tunes was for the tow and the performance tunes?

Anyone???

Your question has no easy answer, because there are really three components to shifting. Bill talked about two of them in detail here: http://dygytalworld.ehost-services13...40&postcount=2

The third component, that he called "slip" is the "Shift Firmness" component and it's simply the time delay between clutch release and clutch engagement during a shift. The Custom Options menu lets you adjust this as a percentage change to what already is in place for that shift - the "zero" point. So, if the built in "zero point" delay for a shift was 450 milliseconds, then +14 would reduce it to 387 milliseconds.

Both the canned and custom tunes have already decreased the delay that was built in to the stock shifts. And, they have altered the torque reduction and line pressures.

I personally feel that unless you are an expert transmission engineer, you should approach altering "Shift Firmness" with a bit of respect. We have to trust that Bill knows what he's doing and we'd better have a very good reason to undo anything he's set up.

However, I was more concerned about the WOT shift points in the OP's post than the Firmness settings. To get the transmission to complete the shift, he'd need the MAX rpm set WAY up! While we don't have a specific "redline" engine speed on these trucks, pushing it about 1000 above stock seems somewhat excessive.

- Jack

fisherman · #3 Sat, May 9th, 2009, 03:32 PM

This is fisherman's wife. What does a new transmission cost? Hopefully not the marriage!!! lol Seriously though will a new transmission really affect selling the truck in the future? And are we talking hunderds here, or thousands....Arrrrrrrrrrrrrrrrrrrrrg

***Jackpine*** · #4 Sat, May 9th, 2009, 06:02 PM

Since I've never replaced a transmission, I don't know what the cost is to rebuild or replace. A CarFax report would point up a transmission replacement/rebuild, so, that might effect resale price. If it's not done properly, the thing fails again, usually quite quickly.

There ARE replacements that are more durable than the stock transmission, if you have to go this route.

- Jack

soutthpaw · #5 Sat, May 9th, 2009, 08:42 PM

Quote:

Originally Posted by fisherman

This is fisherman's wife. What does a new transmission cost? Hopefully not the marriage!!! lol Seriously though will a new transmission really affect selling the truck in the future? And are we talking hunderds here, or thousands....Arrrrrrrrrrrrrrrrrrrrrg

I would be surprised if you can get it rebuilt or replaced for under $2500 if you are having someone do the work... I have no idea what a rebuild costs on that truck... as for resale a good upgraded transmission WILL definitely add to the resale value.. go over to http://www.ford-trucks.com/forums/forum24/ or go to F150online and ask about transmission recommendations.... you can also probably find a good mechanic on the forums in your area that is willing to do side jobs and save you some cash...
I am guessing the Fisherman is not that mechanically inclined but if you remove the transmission yourself and take it in for a rebuild that can save you lots of cash too...

***Power Hungry*** · #6 Mon, May 11th, 2009, 01:49 PM

Just for reference...

Calibration development was done on 2004, 2005 and 2006 F150 trucks. On all of them, we would push them well past what I would consider "normal" modifications and all of them resulted in zero failures.

I personally drove the 2006 for almost a year. Modifications included 35" tires on a 5" lift, a "snorkel" mod, and a NX Nitrous kit set at 150 HP shot. (Yeah, it was freakin' AWESOME when it hit!!)

Testing maximum limits were as follows:

Rev Limiter - 6000 RPM
Speed Limiter - 150 MPH
Timing - +5 Deg. (Running appropriate octane fuel for calibration)
1-2 WOT - 5300 RPM
2-3 WOT - 5300 RPM
3-4 WOT - 4800 RPM
1-2 Firm - +25%
2-3 Firm - +25%
3-4 Firm - +25%

I drove with the shift firmness set at +25 nearly all the time (including when running the nitrous) and hadn't had any issues. Of course, this is only one vehicle and others may not respond identically.

The fact is that mechanical failures happen for a variety of reason, even on unmodified vehicles. If there are any components in a vehicle that are marginal, then performance products or any other modifications that increase strain (lift kits, big tires, etc) can push those marginal components to the point of failure. Unfortunately, there is simply now way to account for those types of failures. In most cases, this tends to be the transmission, although the number of transmission failure I've seen over the last 5 years have been extremely low... less than 10 (maybe less than 5) that I'm aware of.

Fisherman,

While I doubt that the problem with your trans is specifically related to unusually high RPM settings or aggressive shift firmness, I think those settings may have contributed to the failure of marginal components that would have failed of their own accord at some point.

I hope this makes sense...

Take care.

fisherman · #7 Thu, May 14th, 2009, 10:10 AM

OK, so I brought my truck into the dealership (because my dad has been a machanic there for over 35 years). They tore into the transmission and found that the converter had basically exploded, sending filings and other debris throughout, causing major damage to everything else. In other words the transmission is almost 100% destroyed (besides the casing).

Now, since my truck is just past its waranty of 60K, and because my dad has been of excellent service for over 35 years, him and the head honchoes are trying to convince ford motor company to file this as a "Good Will" waranty claim. Which basically means that they feel bad because my truck is just past the waranty period, so they (ford) will cover half of the damage.

If this convincing turns out for the better, my bill will turn out to be around $1500 CND. So I'm crossing my fingers that they give in, cause I'm not really looking forward to spending at least 3K!

So, now that I learned the hard way...... What should I set my shifting and stuff to when I get the truck back??

My wife wants me to no longer use the gryphon, but I refuse to let an $800 part collect dust because of a stupid mistake. Also I dont even have my custom tunes yet!

fisherman · #8 Thu, May 14th, 2009, 10:29 AM

So according to Bills info, I should be able to safely run the WOT shifts at 5300?? And shift firmness at 25? WOW, the shifting at 14 felt pretty harsh. The change in my ashtray would rattle when it shifted!

Anyways, I'll probably leave those parameters alone for a while cause I'll be terified of destroying the transmission again!!