Previous Thread
Next Thread
Print Thread
Page 3 of 3 1 2 3
Re: Flat washers under flywheel bolts? [Re: 360view] #3048280
06/06/22 01:01 PM
06/06/22 01:01 PM
Joined: Sep 2003
Posts: 19,239
north of coder
moparx Online content
"Butt Crack Bob"
moparx  Online Content
"Butt Crack Bob"

Joined: Sep 2003
Posts: 19,239
north of coder
i'm almost betting the cut marks allow the bolt head to deform somewhat, affecting the clamping force.
just guessing this, as it seems this type of bolt head is only found in certain applications.
if it were just cosmetic, why take the time to add this feature ?
just my observation over the years.
i have no degree in anything, just [mostly] self taught skills from the school of hard knocks.
beer

Re: Flat washers under flywheel bolts? [Re: moparx] #3048309
06/06/22 01:51 PM
06/06/22 01:51 PM
Joined: Jan 2003
Posts: 16,917
NC
440Jim Online work
I Live Here
440Jim  Online Work
I Live Here

Joined: Jan 2003
Posts: 16,917
NC
Originally Posted by moparx
i'm almost betting the cut marks allow the bolt head to deform somewhat, affecting the clamping force.

From the Earnest technical bulletin that "Darkbreeze" linked.

Flywheel_place-bolts.JPG

1993 Daytona, 5.50 at 130mph (1/8) 1.19 sixty ft (PG). Link to 572 B1 - Part 1
Re: Flat washers under flywheel bolts? [Re: 440Jim] #3048463
06/06/22 10:34 PM
06/06/22 10:34 PM
Joined: Jan 2003
Posts: 1,908
Nebraska
4
4406bbl Offline
top fuel
4406bbl  Offline
top fuel
4

Joined: Jan 2003
Posts: 1,908
Nebraska
Here are the ARP instructions for their 7/16 flywheel bolts, they do have the undercut head. The other pic is stock flexplate and torque converter bolts...makes me wonder if the differing style is why you get a loose cracked thru the bolt holes plate every once in a while. Reading how the bolts work makes me think stock flexplates are one shot only to be safe.

20220606_204750.jpg20220606_205341.jpg
Re: Flat washers under flywheel bolts? [Re: 440Jim] #3048891
06/08/22 01:07 PM
06/08/22 01:07 PM
Joined: Sep 2003
Posts: 19,239
north of coder
moparx Online content
"Butt Crack Bob"
moparx  Online Content
"Butt Crack Bob"

Joined: Sep 2003
Posts: 19,239
north of coder
Originally Posted by 440Jim
Originally Posted by moparx
i'm almost betting the cut marks allow the bolt head to deform somewhat, affecting the clamping force.

From the Earnest technical bulletin that "Darkbreeze" linked.



thanks for kicking my butt when i needed it Jim ! up
after reading the bulletin, i immediately forgot what i read ! i need to get some of those supplements advertised on late night tv.
i think those products are meant to kill the spiders that make the cobwebs in my noggin. laugh2
i have now printed the bulletin, so i have no excuse to forget what it contains. [except forgetting where i put the print out. biggrin]
beer

Re: Flat washers under flywheel bolts? [Re: moparx] #3048898
06/08/22 01:25 PM
06/08/22 01:25 PM
Joined: Jan 2006
Posts: 8,162
USA
3
360view Offline
Moparts resident spammer
360view  Offline
Moparts resident spammer
3

Joined: Jan 2006
Posts: 8,162
USA
re-reading the ARP instructions makes the use of
a special consistent specification lubricant
under the head of the ARP place bolt
“pop out” in importance

I thereby propose that:
all moparts members should
that from now till death
we will stick our finger into our ear deep enough
to get a bit of
“organic wonder grease”
that we will smear on the underside of every future bolt

Re: Flat washers under flywheel bolts? [Re: 360view] #3048908
06/08/22 01:55 PM
06/08/22 01:55 PM
Joined: Sep 2003
Posts: 19,239
north of coder
moparx Online content
"Butt Crack Bob"
moparx  Online Content
"Butt Crack Bob"

Joined: Sep 2003
Posts: 19,239
north of coder
i was told as a child, you do not stick anything larger than your elbow into your ear ! biggrin
beer

Page 3 of 3 1 2 3






Powered by UBB.threads™ PHP Forum Software 7.7.1