Allison 6sp: Allison smoked

moneypitt

moneypitt

MFNG
Jan 1, 2014
182
0
16
WA
Just found the spec sheet on the original build.

Raybestos GPZ clutch kits for C1,C2,C3 and C4 clutch packs
Goerend billet MLG converter
PR spring upgrade
Transgo shift kit
converter flow valve modified
C1 hub modified
LML pistons and return springs
 
Evan@InglewoodTrans

Evan@InglewoodTrans

yerp
Vendor/Sponsor
Aug 5, 2010
3,118
65
48
40
Western MA
moneypitt said:
Just found the spec sheet on the original build.

Raybestos GPZ clutch kits for C1,C2,C3 and C4 clutch packs
Goerend billet MLG converter
PR spring upgrade
Transgo shift kit
converter flow valve modified
C1 hub modified
LML pistons and return springs
Click to expand...

You probably had the shrinking GPZ c1's in your trans.
 
moneypitt

moneypitt

MFNG
Jan 1, 2014
182
0
16
WA
Evan@LimitlessDiesel said:
There was a run of C1 GPZ clutches that were known for shrinking after installation. For example if clearance was set to .090 after some time it's not uncommon for them to be .155 or more.
Click to expand...

Piss, So I am guessing if the clearance opened up they would be prone to slipping? Does this usually take out the converter when over heated like it did?
 
moneypitt

moneypitt

MFNG
Jan 1, 2014
182
0
16
WA
Ok I got the truck over to my trans guy, just heard back this morning it was the C'1s that went bad. He is rebuilding it under warranty:woott:
 
IOWA LLY

IOWA LLY

Yes, its really me
Feb 23, 2007
2,275
4
0
Good deal. Nice to hear he is standing behind his work.

Sent from my SM-N920V using Tapatalk
 
moneypitt

moneypitt

MFNG
Jan 1, 2014
182
0
16
WA
I forgot to post what the problem was, the Raybestos GPZ C'1s compressed and they could not fully engage. So even though it was a part failure after two years of drag racing Scott is rebuilding it under warranty.
 
SDP

SDP

AKA Dmax15
Dec 20, 2008
261
0
16
Port Angeles, WA
moneypitt said:
I forgot to post what the problem was, the Raybestos GPZ C'1s compressed and they could not fully engage. So even though it was a part failure after two years of drag racing Scott is rebuilding it under warranty.
Click to expand...

A few more extra's thrown in there for you too, it has Mike's springs in the VB now. Early Raybesto's C1 frictions from a couple years ago had compressed and were toast but we had you covered :thumb:. We have had good luck with the C1's that are in there now.
 
A. Stock Lbz

A. Stock Lbz

New member
Aug 13, 2013
342
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0
spokane wa
SDP said:
A few more extra's thrown in there for you too, it has Mike's springs in the VB now. Early Raybesto's C1 frictions from a couple years ago had compressed and were toast but we had you covered :thumb:. We have had good luck with the C1's that are in there now.
Click to expand...

I didn't know you build transmissions, I haven't had any luck with builders in the northwest. Can you do one day builds? Good to see people stand behind their work.
 
SDP

SDP

AKA Dmax15
Dec 20, 2008
261
0
16
Port Angeles, WA
A. Stock Lbz said:
I didn't know you build transmissions, I haven't had any luck with builders in the northwest. Can you do one day builds? Good to see people stand behind their work.
Click to expand...

I'm driving over to Seattle tomorrow to pick a truck up with a built transmission that was hurt, not our build but it lasted 6 years. There are some good shops in the area. One day shouldn't be a problem for most shops.

Should be a fun trip towing with the 2.8L Duramax Canyon that I just built twins for.
 
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