PI VIg 3bolt TQ converter Q?
Feb 25, 2006 | 11:16 PM
#11
Cleaning up today and I found these on the workbench. Maybe PI did send me the right bolts and I got them mixed up with another pack of 3 black 8.8 bolts. Don't ask me where the smaller ones came from?? They are definitely 12mm. Add the extra thickness of any aftermarket flexplate to this for your bolt length.
Feb 26, 2006 | 01:38 AM
#12
Originally Posted by DrX
Depends if you can find flange head bolts like OEM or need a washer. 20mm will be too long. That's all I could find and I had to cut them down. PI's instructions say 12mm- http://www.converter.com/book_flywheel.htm But I see that the instructions regarding the TC to flexplate clearance still say 1/16"-1/8" for all apps so who knows? It would be easy to determine now with the TC off. Screw a bolt in to the TC until it bottoms, then back it off a little. Measure how much thread was buried and add the thickness of the flexplate plus washer(if any). I can't recall exactly what I ended up with but I think it could be a little longer than 12 mm.
Feb 26, 2006 | 09:43 AM
#13
Originally Posted by Dark Halo
what clearance are you checking? Where do I need to mesure how far the converter is from the flexplate?
It's easy to check if you have the trans out. Measure the distance from the mounting surface of the bellhousing to the face of one of the lugs on the converter. If the measurement is the same for both the OEM and PI converters, no shimming is required.
Feb 26, 2006 | 10:42 AM
#14
Originally Posted by DrX
Cleaning up today and I found these on the workbench. Maybe PI did send me the right bolts and I got them mixed up with another pack of 3 black 8.8 bolts. Don't ask me where the smaller ones came from?? They are definitely M10 X 1.5 X 12mm. Add the extra thickness of any aftermarket flexplate to this for your bolt length.
I might try and squeek in another thread or two using a 15mm. but that really all dpends on which flexplate I go with 
Feb 26, 2006 | 07:24 PM
#15
Originally Posted by DrX
The 1/16" - 1/8" is the space between the flexplate and the face of one of the 3 lugs on the PI Vig TC when the TC is fully seated on the input shaft of the trans. If the space was more than that you were supposed to use shims/washers between them to avoid pulling the TC out too far and causing damage to the pump. But apparently the LS1 trannnies are different and 5/16" is acceptable without shimming.
It's easy to check if you have the trans out. Measure the distance from the mounting surface of the bellhousing to the face of one of the lugs on the converter. If the measurement is the same for both the OEM and PI converters, no shimming is required.
It's easy to check if you have the trans out. Measure the distance from the mounting surface of the bellhousing to the face of one of the lugs on the converter. If the measurement is the same for both the OEM and PI converters, no shimming is required.
Jan 17, 2007 | 04:19 PM
#19
Originally Posted by silver-mod-o
5/16" I have never needed to shim my PI...
if I was thinking right I would have measured everything before I took them apart
