Need help with my Allison in my Cummins - Competition Diesel.Com

TwinTurboTim · 06-18-2021, 08:55 PM

I wasn't sure where to post this but I purchased a CA conversions kit a few months ago and the first transmission lasted 2k and I had to send it back to them to fix. I had to pay for it because they said because I added a cam it messed with their computer they use and caused it to fail. Now 1k later it failed again. I am looking for a local guy in the Midwest to work on it and actually figure out why its failing. I am also open to junking their computer setup if necessary. They want me to spend 3k to ship my truck down there but I just don't know if I have any faith in them at this point. Midwest guys who are good with Allison and conversions.

thatguy69 · 06-18-2021, 11:13 PM

Didn't you already create a thread like this?

TwinTurboTim · 06-19-2021, 07:47 AM

Yeah that was the first time it failed. I sent it back and it failed again. Now I wanna find someone local to build it.

displacedtexan · 06-19-2021, 09:39 AM

The midwest is a big place...

Which is good because you're asking for something pretty odd...

Where are you?

JWhite · 06-19-2021, 09:51 AM

I recall asking what parts were used before, never heard an answer back. They could be cheaping out on parts as well as missing key areas on the rebuild.

I also suggest calling Inglewood Transmission to see if they'll help you out

TwinTurboTim · 06-19-2021, 08:37 PM

I am in Minneapolis Minnesota. Yeah I know the trans has all the billet hard parts but don't know all the intricate details. I tore apart PCS1 and seen it had some kind of shift kit parts in it.

JWhite · 06-21-2021, 05:22 PM

PCS1? Not familiar with that term

TwinTurboTim · 06-21-2021, 06:00 PM

Pressure control solenoid 1. I think it's the apply solenoid.

T-MAN · 06-21-2021, 07:09 PM

When you say failed what is it doing? Did you pull trans apart or just drop valvebody?

TwinTurboTim · 06-22-2021, 05:26 AM

I didnt pull it apart first time but they said C2 and C3 burned up if I remember. I have only pulled pan this time. I am not sure if anything is burned up yet.

T-MAN · 06-22-2021, 06:32 AM

ok, c2 active 4th-6th and c3 is 3rd and 5th, there are some good updates for those clutches. my guess is medium duty tuning locks converter in 3rd and now the clutches take a beating, also when the converter locks pressure is cut back unless the converter cut back valve is modified. Have you checked line pressure or asked where it was set? Also not sure on what tuner or hp you have but switching tunes on a adaptive learn trans will burn it up pretty quick, even with shitty tuning there's plenty of guys who can build that trans to hold the power, they just don't tolerate a bind very well with the converter locked up......My guess is they have off the shelf allison tuning from one of the many cummins/allison medium duty trucks...Aside from burning up transmissions how does it shift or act under normal driving and towing? shift feel and shift schedule?

Isn't sparkle britches mid- west? i believe he has the mechanics of the allison figured out.......

TwinTurboTim · 06-22-2021, 07:08 AM

Converter locks at 25mph no matter what. I am definitely not a fan of this HD computer setup but it did shift nice at part throttle. I am so surprised this one burned up again because I was just so easy on it. After the first one failed I was so bummed that I just decided I was just going to drive the truck on switch 1 and never beat on it again. I think really my best solution is switch to the PCS kit and just start all over.

T-MAN · 06-22-2021, 07:15 AM

That sux, my guess is mostly stock trans, can you get a build list from them? an allison in stock form isn't bullet proof, only reason they live is defuel on the shifts... Does yours defuel on the shifts? If not it will need upgrade ( you already know this) Has the name Jason been mentioned to you?

jasonc · 06-22-2021, 07:27 AM

Quote:

Originally Posted by T-MAN

That sux, my guess is mostly stock trans, can you get a build list from them? an allison in stock form isn't bullet proof, only reason they live is defuel on the shifts... Does yours defuel on the shifts? If not it will need upgrade ( you already know this) Has the name Jason been mentioned to you?

How do you deal with no defuel on shifts with your setup on the black truck?

T-MAN · 06-22-2021, 07:34 AM

Quote:

Originally Posted by jasonc

How do you deal with no defuel on shifts with your setup on the black truck?

Shift timing and my wallet.........

BigPapa · 06-22-2021, 09:01 AM

Had a buddy several years ago with one of the early D-max/Allison's he'd built for a dedicated pulling truck. It would defuel so bad the sled would slam the back of the truck. I don't think he ever got it to shift without defueling and finally sold it.

TwinTurboTim · 06-22-2021, 10:16 AM

No defueling on mine. The computer is completely standalone. I do know its all billet internals and has VB modifications.

thatguy69 · 06-22-2021, 04:46 PM

Quote:

Originally Posted by TwinTurboTim

No defueling on mine. The computer is completely standalone. I do know its all billet internals and has VB modifications.

You know or you know that's what you were sold?

TwinTurboTim · 06-22-2021, 04:51 PM

Definitely know I was sold that. I will find out soon enough. Moonlight diesel is going to look at it.

JWhite · 06-22-2021, 07:38 PM

My suggestion on the shop to call still stands. It's not complete black magic to get one to hold power or shift right, but 90% of the shops will hack it together.

What year trans does it have? Do you know if they used a 5spd or 6spd drum?

06-18-2021, 08:55 PM	#1
TwinTurboTim Name: TwinTurboTim Title: Green Behind the Ears Status: Not Here Join Date: Nov 2019 Member`s Gallery Posts: 48	Need help with my Allison in my Cummins I wasn't sure where to post this but I purchased a CA conversions kit a few months ago and the first transmission lasted 2k and I had to send it back to them to fix. I had to pay for it because they said because I added a cam it messed with their computer they use and caused it to fail. Now 1k later it failed again. I am looking for a local guy in the Midwest to work on it and actually figure out why its failing. I am also open to junking their computer setup if necessary. They want me to spend 3k to ship my truck down there but I just don't know if I have any faith in them at this point. Midwest guys who are good with Allison and conversions. __________________ 2016 2500 Cummins, Allison swapped, Billet S480 over EFR9180. 188/220 Cam, Apex rods, Gorilla Girdle.

06-18-2021, 11:13 PM	#2
thatguy69 Name: thatguy69 Title: Too Much Time Status: Not Here Join Date: Jul 2011 Location: Mansfield Ohio Member`s Gallery Posts: 2,023	Didn't you already create a thread like this? __________________ 1999 Compound 24v Rust Rocket 2008 F350 P24v/Allison

06-19-2021, 07:47 AM	#3
TwinTurboTim Name: TwinTurboTim Title: Green Behind the Ears Status: Not Here Join Date: Nov 2019 Member`s Gallery Posts: 48	Yeah that was the first time it failed. I sent it back and it failed again. Now I wanna find someone local to build it. __________________ 2016 2500 Cummins, Allison swapped, Billet S480 over EFR9180. 188/220 Cam, Apex rods, Gorilla Girdle.

06-19-2021, 09:39 AM	#4
displacedtexan Name: displacedtexan Title: $500 PREMIUM MEMBER Status: Not Here Join Date: Feb 2008 Location: Mobilehoma Member`s Gallery Posts: 13,876	The midwest is a big place... Which is good because you're asking for something pretty odd... Where are you? __________________ I talk loud.

06-19-2021, 09:51 AM	#5
JWhite Name: JWhite Title: Trained monkey Status: Not Here Join Date: Aug 2009 Location: F Burg Ohio Member`s Gallery Posts: 1,817	I recall asking what parts were used before, never heard an answer back. They could be cheaping out on parts as well as missing key areas on the rebuild. I also suggest calling Inglewood Transmission to see if they'll help you out __________________ GMC with a LiLLY

06-19-2021, 08:37 PM	#6
TwinTurboTim Name: TwinTurboTim Title: Green Behind the Ears Status: Not Here Join Date: Nov 2019 Member`s Gallery Posts: 48	I am in Minneapolis Minnesota. Yeah I know the trans has all the billet hard parts but don't know all the intricate details. I tore apart PCS1 and seen it had some kind of shift kit parts in it. __________________ 2016 2500 Cummins, Allison swapped, Billet S480 over EFR9180. 188/220 Cam, Apex rods, Gorilla Girdle.

06-21-2021, 05:22 PM	#7
JWhite Name: JWhite Title: Trained monkey Status: Not Here Join Date: Aug 2009 Location: F Burg Ohio Member`s Gallery Posts: 1,817	PCS1? Not familiar with that term __________________ GMC with a LiLLY

06-21-2021, 06:00 PM	#8
TwinTurboTim Name: TwinTurboTim Title: Green Behind the Ears Status: Not Here Join Date: Nov 2019 Member`s Gallery Posts: 48	Pressure control solenoid 1. I think it's the apply solenoid. __________________ 2016 2500 Cummins, Allison swapped, Billet S480 over EFR9180. 188/220 Cam, Apex rods, Gorilla Girdle.

06-21-2021, 07:09 PM	#9
T-MAN Name: T-MAN Title: misunderstood Status: Not Here Join Date: Sep 2008 Member`s Gallery Posts: 352	When you say failed what is it doing? Did you pull trans apart or just drop valvebody? __________________ 2001.5 ppump allison 11.399@ 117.90 6850# 1997 rcsb 12v 6.7 9.38 @ 146.54

06-22-2021, 05:26 AM	#10
TwinTurboTim Name: TwinTurboTim Title: Green Behind the Ears Status: Not Here Join Date: Nov 2019 Member`s Gallery Posts: 48	I didnt pull it apart first time but they said C2 and C3 burned up if I remember. I have only pulled pan this time. I am not sure if anything is burned up yet. __________________ 2016 2500 Cummins, Allison swapped, Billet S480 over EFR9180. 188/220 Cam, Apex rods, Gorilla Girdle.

06-22-2021, 06:32 AM	#11
T-MAN Name: T-MAN Title: misunderstood Status: Not Here Join Date: Sep 2008 Member`s Gallery Posts: 352	ok, c2 active 4th-6th and c3 is 3rd and 5th, there are some good updates for those clutches. my guess is medium duty tuning locks converter in 3rd and now the clutches take a beating, also when the converter locks pressure is cut back unless the converter cut back valve is modified. Have you checked line pressure or asked where it was set? Also not sure on what tuner or hp you have but switching tunes on a adaptive learn trans will burn it up pretty quick, even with shitty tuning there's plenty of guys who can build that trans to hold the power, they just don't tolerate a bind very well with the converter locked up......My guess is they have off the shelf allison tuning from one of the many cummins/allison medium duty trucks...Aside from burning up transmissions how does it shift or act under normal driving and towing? shift feel and shift schedule? Isn't sparkle britches mid- west? i believe he has the mechanics of the allison figured out....... __________________ 2001.5 ppump allison 11.399@ 117.90 6850# 1997 rcsb 12v 6.7 9.38 @ 146.54 Last edited by T-MAN; 06-22-2021 at 06:36 AM.

06-22-2021, 07:08 AM	#12
TwinTurboTim Name: TwinTurboTim Title: Green Behind the Ears Status: Not Here Join Date: Nov 2019 Member`s Gallery Posts: 48	Converter locks at 25mph no matter what. I am definitely not a fan of this HD computer setup but it did shift nice at part throttle. I am so surprised this one burned up again because I was just so easy on it. After the first one failed I was so bummed that I just decided I was just going to drive the truck on switch 1 and never beat on it again. I think really my best solution is switch to the PCS kit and just start all over. __________________ 2016 2500 Cummins, Allison swapped, Billet S480 over EFR9180. 188/220 Cam, Apex rods, Gorilla Girdle.

06-22-2021, 07:15 AM	#13
T-MAN Name: T-MAN Title: misunderstood Status: Not Here Join Date: Sep 2008 Member`s Gallery Posts: 352	That sux, my guess is mostly stock trans, can you get a build list from them? an allison in stock form isn't bullet proof, only reason they live is defuel on the shifts... Does yours defuel on the shifts? If not it will need upgrade ( you already know this) Has the name Jason been mentioned to you? __________________ 2001.5 ppump allison 11.399@ 117.90 6850# 1997 rcsb 12v 6.7 9.38 @ 146.54 Last edited by T-MAN; 06-22-2021 at 07:24 AM. Reason: splling

06-22-2021, 09:01 AM	#16
BigPapa Name: BigPapa Title: Truckless Status: Not Here Join Date: Jan 2008 Location: Springfield, TN Member`s Gallery Posts: 5,037	Had a buddy several years ago with one of the early D-max/Allison's he'd built for a dedicated pulling truck. It would defuel so bad the sled would slam the back of the truck. I don't think he ever got it to shift without defueling and finally sold it. __________________ Scott 2003 Avalanche Z71 Common sense is like deodorant. The people that need it most never use it.

06-22-2021, 10:16 AM	#17
TwinTurboTim Name: TwinTurboTim Title: Green Behind the Ears Status: Not Here Join Date: Nov 2019 Member`s Gallery Posts: 48	No defueling on mine. The computer is completely standalone. I do know its all billet internals and has VB modifications. __________________ 2016 2500 Cummins, Allison swapped, Billet S480 over EFR9180. 188/220 Cam, Apex rods, Gorilla Girdle.

06-22-2021, 04:51 PM	#19
TwinTurboTim Name: TwinTurboTim Title: Green Behind the Ears Status: Not Here Join Date: Nov 2019 Member`s Gallery Posts: 48	Definitely know I was sold that. I will find out soon enough. Moonlight diesel is going to look at it. __________________ 2016 2500 Cummins, Allison swapped, Billet S480 over EFR9180. 188/220 Cam, Apex rods, Gorilla Girdle.

06-22-2021, 07:38 PM	#20
JWhite Name: JWhite Title: Trained monkey Status: Not Here Join Date: Aug 2009 Location: F Burg Ohio Member`s Gallery Posts: 1,817	My suggestion on the shop to call still stands. It's not complete black magic to get one to hold power or shift right, but 90% of the shops will hack it together. What year trans does it have? Do you know if they used a 5spd or 6spd drum? __________________ GMC with a LiLLY