Automatic Transmission 2-Speed thru 10-Speed GM Autos | Converters | Shift Kits
Sponsored by:
Sponsored by:

When to Shim a NEW Torque Convertor....

Thread Tools
 
Search this Thread
 
Old 08-07-2013, 11:17 PM
  #1  
Staging Lane
Thread Starter
 
railmule's Avatar
 
Join Date: Mar 2011
Location: Kentucky
Posts: 80
Likes: 0
Received 1 Like on 1 Post
Default When to Shim a NEW Torque Convertor....

If the gap is between 1/8in to 1/4in is that good to go... and over 1/4in then shim it a little bit... thanks..
Old 08-08-2013, 12:19 AM
  #2  
TECH Resident
iTrader: (17)
 
Decadence75's Avatar
 
Join Date: Nov 2011
Location: Pearl, MS
Posts: 878
Likes: 0
Received 1 Like on 1 Post
Default

I'd shim it to a 1/8". More than that and the converter will probably get pulled out of the tranny pump some and destroy it.
Old 08-08-2013, 07:30 AM
  #3  
TECH Veteran
iTrader: (4)
 
FirstYrLS1Z's Avatar
 
Join Date: Aug 2004
Location: Euclid,Ohio
Posts: 4,165
Received 134 Likes on 118 Posts

Default

Just the opposite of what was posted above,a larger gap means the torque convertor is further into the tranny,BUT the 1/8" is correct/better.
Old 08-08-2013, 01:34 PM
  #4  
TECH Addict
iTrader: (88)
 
Burken01's Avatar
 
Join Date: Mar 2005
Location: Anaheim, Ca
Posts: 2,923
Likes: 0
Received 13 Likes on 12 Posts

Default

And check the bellhousing to converter mounting pads gap, should be an 1" - 1 1/8"
Old 08-08-2013, 03:40 PM
  #5  
TECH Resident
iTrader: (17)
 
Decadence75's Avatar
 
Join Date: Nov 2011
Location: Pearl, MS
Posts: 878
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by FirstYrLS1Z
Just the opposite of what was posted above,a larger gap means the torque convertor is further into the tranny,BUT the 1/8" is correct/better.
If the gap is larger than 1/8 then when you go to bolt the converter to the flexplate it is going to pull the converter further out of the tranny than it would with a smaller gap.
Old 08-08-2013, 10:58 PM
  #6  
TECH Fanatic
iTrader: (20)
 
themealonwheels's Avatar
 
Join Date: Jan 2011
Location: North Houston
Posts: 1,912
Received 77 Likes on 56 Posts

Default

Hopefully this is a relevant question y'all can help me with:

My new torque converter had a 1/4" gap between the flexplate and the mounting pads of the converter. I put in 1/4" spacers, but they really had to be forced between the flexplate and the mounting pads of the converter, meaning it was probably forcing the converter into the pump. Should I go back and space it to about 1/8"?
Old 08-08-2013, 11:32 PM
  #7  
TECH Resident
iTrader: (17)
 
Decadence75's Avatar
 
Join Date: Nov 2011
Location: Pearl, MS
Posts: 878
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by themealonwheels
Hopefully this is a relevant question y'all can help me with:

My new torque converter had a 1/4" gap between the flexplate and the mounting pads of the converter. I put in 1/4" spacers, but they really had to be forced between the flexplate and the mounting pads of the converter, meaning it was probably forcing the converter into the pump. Should I go back and space it to about 1/8"?
Yes, it should be shimmed to 1/8" gap. I would go back in there with new shims.
Old 08-09-2013, 01:29 AM
  #8  
TECH Fanatic
iTrader: (20)
 
themealonwheels's Avatar
 
Join Date: Jan 2011
Location: North Houston
Posts: 1,912
Received 77 Likes on 56 Posts

Default

Originally Posted by Decadence75
Yes, it should be shimmed to 1/8" gap. I would go back in there with new shims.
I'm totally new to autos, is that why my trans sounds like it's clunking around sitting at idle with no load? Because my converter is sitting too deep in the pump?
Old 08-09-2013, 02:11 AM
  #9  
TECH Addict
iTrader: (88)
 
Burken01's Avatar
 
Join Date: Mar 2005
Location: Anaheim, Ca
Posts: 2,923
Likes: 0
Received 13 Likes on 12 Posts

Default

Yes, you can cause pump damage!
Old 08-09-2013, 02:17 AM
  #10  
TECH Fanatic
iTrader: (20)
 
themealonwheels's Avatar
 
Join Date: Jan 2011
Location: North Houston
Posts: 1,912
Received 77 Likes on 56 Posts

Default

Originally Posted by Burken01
Yes, you can cause pump damage!
Ah, ****.
Old 08-09-2013, 03:18 AM
  #11  
TECH Resident
iTrader: (17)
 
Decadence75's Avatar
 
Join Date: Nov 2011
Location: Pearl, MS
Posts: 878
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by themealonwheels
I'm totally new to autos, is that why my trans sounds like it's clunking around sitting at idle with no load? Because my converter is sitting too deep in the pump?
Most likely. If the pump is broken, there is a chance that metal bits have gone into the converter as well. The only way is to pull the tranny and open it up and inspect the pump. If it's broken and metal bits are in there the only way to check the converter would be to have someone cut it open. The cost for something like this can add up pretty quickly.
Old 08-09-2013, 02:14 PM
  #12  
TECH Addict
iTrader: (88)
 
Burken01's Avatar
 
Join Date: Mar 2005
Location: Anaheim, Ca
Posts: 2,923
Likes: 0
Received 13 Likes on 12 Posts

Default

OP don't drive your car another foot..

Hopefully you didn't do any damage, but from my research it looks like you can do damage fairly easy with an improperly installed converter..

Get under your car and investigate
Old 08-11-2013, 11:27 AM
  #13  
TECH Fanatic
iTrader: (20)
 
themealonwheels's Avatar
 
Join Date: Jan 2011
Location: North Houston
Posts: 1,912
Received 77 Likes on 56 Posts

Default

Originally Posted by Burken01
OP don't drive your car another foot..

Hopefully you didn't do any damage, but from my research it looks like you can do damage fairly easy with an improperly installed converter..

Get under your car and investigate
Hey guys, I know this isn't my thread, but thanks for the replies. I went home immediately and replaced the spacers I had in there with some washers of the appropriate thickness and of course the noise disappeared.

However, I noticed that the intense vibrations had managed to begin backing out the flexplate to crank bolts! The flexplate is loose! So damnit, I have to go pull my tranny to tighten those bolts... Glad I found it when I did! Thanks, guys!
Old 08-11-2013, 03:46 PM
  #14  
TECH Resident
iTrader: (17)
 
Decadence75's Avatar
 
Join Date: Nov 2011
Location: Pearl, MS
Posts: 878
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by themealonwheels
Hey guys, I know this isn't my thread, but thanks for the replies. I went home immediately and replaced the spacers I had in there with some washers of the appropriate thickness and of course the noise disappeared.

However, I noticed that the intense vibrations had managed to begin backing out the flexplate to crank bolts! The flexplate is loose! So damnit, I have to go pull my tranny to tighten those bolts... Glad I found it when I did! Thanks, guys!
Glad to hear that you've everything sorted out. Hopefully there wasn't any pump damage. When going in to re-tighten the flexplate bolts I would also put some loctite on them.



Quick Reply: When to Shim a NEW Torque Convertor....



All times are GMT -5. The time now is 09:40 AM.