doesitonall4rs
15+ Year Contributor
- 325
- 9
- Oct 26, 2005
-
cherry hill,
New_Jersey
Im making this post in hopes to save somebody the headache in the future for Hardware selection for the kiggly flexplate to crank bolts.
Im in the process of swapping from a 5 speed AWD to auto. Been doing a lot of digging and a lot of different information out there. Hoping to clear it up for the next guy so they don't have to waste time modifying hardened hardware.
Some of the information I found out there suggests that modifying the 5 speed flywheel bolts in order to have enough "threads" on the bolts due to the thicker flexplate is the best practice. Before I started wasting my time hacking bolts I figured I'll pick up the factory auto bolts and see how big of a difference there really is.
Cliffs: It appears that the reach of a stock automatic bolt going threw the flexplate with the flexplate washer is exactly the same amount as a 5 speed bolt going threw the flywheel. (I counted 9 threads). Read on for the pictures if you don't believe me.
First notable difference the bolt heads on the auto crank bolts are smaller. (Auto bolt on the left, 5 speed bolt on the right)
Next is a pic is showing how much longer the 5 speed bolt is (this is going threw the flexplate washer and kiggly flexplate). 13 threads sticking threw for the 5 speed bolt compared to 9 for the auto bolt. Also the 5 speed bolt is entirely too long and needs to be shortened so all said and done you may have 1-2 extra threads inside the crank if you spend time modifying the 5 speed bolts .
Here is how much reach a 5speed bolt has into the crank with an OEM flywheel. (who woulda thunk it, 9 threads as well)
Here is the part number of the the Auto crank bolts, Paid $12.30 for all 6 at extremepsi.
Good luck and happy moding
Im in the process of swapping from a 5 speed AWD to auto. Been doing a lot of digging and a lot of different information out there. Hoping to clear it up for the next guy so they don't have to waste time modifying hardened hardware.
Some of the information I found out there suggests that modifying the 5 speed flywheel bolts in order to have enough "threads" on the bolts due to the thicker flexplate is the best practice. Before I started wasting my time hacking bolts I figured I'll pick up the factory auto bolts and see how big of a difference there really is.
Cliffs: It appears that the reach of a stock automatic bolt going threw the flexplate with the flexplate washer is exactly the same amount as a 5 speed bolt going threw the flywheel. (I counted 9 threads). Read on for the pictures if you don't believe me.
First notable difference the bolt heads on the auto crank bolts are smaller. (Auto bolt on the left, 5 speed bolt on the right)
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Next is a pic is showing how much longer the 5 speed bolt is (this is going threw the flexplate washer and kiggly flexplate). 13 threads sticking threw for the 5 speed bolt compared to 9 for the auto bolt. Also the 5 speed bolt is entirely too long and needs to be shortened so all said and done you may have 1-2 extra threads inside the crank if you spend time modifying the 5 speed bolts .
You must be logged in to view this image or video.
Here is how much reach a 5speed bolt has into the crank with an OEM flywheel. (who woulda thunk it, 9 threads as well)
You must be logged in to view this image or video.
Here is the part number of the the Auto crank bolts, Paid $12.30 for all 6 at extremepsi.
You must be logged in to view this image or video.
Good luck and happy moding
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