Go Back   PowerStrokeArmy > Power Strokes > 7.3 Aftermarket

Reply
 
Thread Tools Display Modes
  #1  
Old 01-09-2020, 09:50 AM
boss300 boss300 is offline
Private
Member's Gallery
 
Join Date: Nov 2013
Posts: 13
Default Coast clutch locked in built 4R100ís?

I recently purchased a built trans from a reputable builder. After I got it installed I noticed that no matter what the computer told the trans to do that if the trans was not in 4th that the coast clutch was always engaged. With my tuning this made for a very annoying 4-3 downshift as the coast clutch would always come on and the converter stays locked. I took the truck back and asked to have this feature removed. The builder would not do it and said that he uses the coast clutch to help share the load going through the transmission and if he put it back it would be giving up lots of strength and durability. He is going to refund my money once I get a trans built elsewhere.

Has anybody noticed their coast clutch always being on with any of their built transmissions? I am curious if BTS or John wood do this with their products or anybody else. Whatís everybodyís thoughts?
__________________
Early 99 F350 SRW Supercab Longbed 4x4, 250/200ís, adrenaline, KC38R turbo, shimmed 910ís, DP tunes, 4.10ís and 37x12.50 nittos on 2004 18Ē KR wheels.

1986 F250 4x4 6.9/C6

3 other 80-96 Fords all 300-6 cylinder powered
  #2  
Old 01-13-2020, 03:35 PM
Mark Kovalsky's Avatar
Mark Kovalsky Mark Kovalsky is offline
Major
Member's Gallery
 
Join Date: Jul 2011
Location: SE Florida, USA
Posts: 1,153
Default

I have only seen this done on a full race trans that was not a street legal vehicle.
__________________
Mark
Former Ford Automatic Transmission Engineer

ďThe good thing about science is that it's true whether or not you believe in it.Ē ― Neil deGrasse Tyson
  #3  
Old 01-18-2020, 09:04 PM
PSD POWER007's Avatar
PSD POWER007 PSD POWER007 is offline
Sergeant
Member's Gallery
 
Join Date: Jan 2014
Location: Columbus, GA
Posts: 456
Default

Who was the builder? PM if necessary
__________________
2003 Ford Excursion Eddie Bauer 4x4 7.3L Powerstroke Forged with ARPís
Irate T4 364.5, Full Force 180/80's, Adrenaline HPOP, Driven Diesel RR, GH tuned Hydra, Sam Wyse stage 2, 6.0 Tranny cooler
2005 Ford Excursion Limited 4x4 6.0 Powerstroke
Coming soon KDD stage 1 long block, FF 155/30ís, KC stage 1, Driven Diesel RR, No Limit CAI, BPD HD oil cooler, Odawg stage 2
  #4  
Old 01-19-2020, 09:23 AM
Mark Kovalsky's Avatar
Mark Kovalsky Mark Kovalsky is offline
Major
Member's Gallery
 
Join Date: Jul 2011
Location: SE Florida, USA
Posts: 1,153
Default

It was built by the transmission prototype shop at Ford Motor Company, Automatic Transmission Engineering Office. That's where I worked.

We built transmissions for a Baja race team. We won the Baja 1000, the Baja 2000, and many other SCORE off road races.
__________________
Mark
Former Ford Automatic Transmission Engineer

ďThe good thing about science is that it's true whether or not you believe in it.Ē ― Neil deGrasse Tyson
  #5  
Old 01-19-2020, 10:06 AM
mandkole's Avatar
mandkole mandkole is offline
Major
Member's Gallery
 
Join Date: Jan 2012
Location: Northwest
Posts: 2,302
Default

Nothing unusual about my BTS other than known mod stuff today. No billet, no locked coast clutch. My trans buddy who freshened it (4 yrs ago after the converter gave up) closely looked at it, and noted some minor things being done. Some frictions and a new converter, it gets the same 500 thru it now as it did then..
__________________
2000 F250 CCSB GT4294R, 250/100s, Dahl/Fuelab, BTS, PHP tuning, stock 17* pump
1994 F250 SCLB
(sold)
1997 F250 CCSB 2wd (sold)
  #6  
Old 01-23-2020, 06:27 PM
PSD POWER007's Avatar
PSD POWER007 PSD POWER007 is offline
Sergeant
Member's Gallery
 
Join Date: Jan 2014
Location: Columbus, GA
Posts: 456
Default

I am in love with my new Sam Wyse stage 2 so far.
__________________
2003 Ford Excursion Eddie Bauer 4x4 7.3L Powerstroke Forged with ARPís
Irate T4 364.5, Full Force 180/80's, Adrenaline HPOP, Driven Diesel RR, GH tuned Hydra, Sam Wyse stage 2, 6.0 Tranny cooler
2005 Ford Excursion Limited 4x4 6.0 Powerstroke
Coming soon KDD stage 1 long block, FF 155/30ís, KC stage 1, Driven Diesel RR, No Limit CAI, BPD HD oil cooler, Odawg stage 2
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 05:20 PM.

 

Powered by vBulletin®
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

Designed by Military Ltd