CDS aluminum flexplate torque converter bolt depth
03-08-2013, 10:36 PM
#1
CDS aluminum flexplate torque converter bolt depth I just got my converter in the mail and was checking the bolts that go through the flexplate to the converter, Since Im only using 3 bolts for the converter I want to make sure the bolts are threaded in at a good depth
The bolt is M10x1.5x18mm
looks like it will thread into the converter pads about 10-11mm.. that seems like not enough..
I shouldnt have to use shims because the flexplate is thicker than stock to eliminate shims...
eh Im bored its friday and Im stuck at home lol
Is that enough.. Arent the bolts supposed to go in 1.5 or 2 times the thickness of the bolt...
I emailed chris @ circle d to see whats up, figured Id ask here too and see what some of you guys have done..
thanks
Last edited by Burken01; 03-09-2013 at 02:56 AM.
03-09-2013, 08:36 AM
#2
Moderator
According the Converter Sponsor Yank:
"correct bolts are 12mm long with stock flexplate 16mm with SFI flexplate"
You have the thick flexplate and therefore appear to have the 16mm bolts.
This thread covered the topic:
https://ls1tech.com/forums/automatic...ter-bolts.html
"correct bolts are 12mm long with stock flexplate 16mm with SFI flexplate"
You have the thick flexplate and therefore appear to have the 16mm bolts.
This thread covered the topic:
https://ls1tech.com/forums/automatic...ter-bolts.html
03-09-2013, 10:27 AM
#3
According the Converter Sponsor Yank:
"correct bolts are 12mm long with stock flexplate 16mm with SFI flexplate"
You have the thick flexplate and therefore appear to have the 16mm bolts.
This thread covered the topic:
https://ls1tech.com/forums/automatic...ter-bolts.html
"correct bolts are 12mm long with stock flexplate 16mm with SFI flexplate"
You have the thick flexplate and therefore appear to have the 16mm bolts.
This thread covered the topic:
https://ls1tech.com/forums/automatic...ter-bolts.html
so the 18mm bolt i got will thread in only 11mm, so by my calculations i would need a 25mm bolt and dremel 3mm off it... =22mm - 7mm flexplate thickness and i get 15mm of thread depth into the converter which is 1.5 times the diameter of the bolt...
lol
03-09-2013, 02:57 PM
#4
Moderator
Think about the 12mm bolt for a stock flexplate. The stock flexplate is at least 1mm thick, so a bit less than 11mm is available for the thread.
If you go with anything longer, be sure to first thread it into the converter to see how much it will take before bottoming out. It may not be much more than 12mm. You certainly DO NOT want the bolt bottoming out in the converter until it is at full torque (at which point it will stretch a bit too.)
If you go with anything longer, be sure to first thread it into the converter to see how much it will take before bottoming out. It may not be much more than 12mm. You certainly DO NOT want the bolt bottoming out in the converter until it is at full torque (at which point it will stretch a bit too.)
03-09-2013, 05:34 PM
#6
Moderator
I'm sure there is a website that give you bolt stretch, but since going from 0 to 45 lbs is less than one full turn, I doubt it is even 1 thread.
Glad you are measuring everything so carefully; also be sure to measure the distance of the converter pads to the edge of the bell housing, should be very close to 1-1/8"; much less indicates the converter is not all the way in yet.
Glad you are measuring everything so carefully; also be sure to measure the distance of the converter pads to the edge of the bell housing, should be very close to 1-1/8"; much less indicates the converter is not all the way in yet.
