Printable Version of Topic

Click here to view this topic in its original format

914World.com _ 914World Garage _ Bad pin day

Posted by: billd Feb 2 2006, 12:59 AM

The one on the left is a brand new pin from Pelican. It sheared at less than 30ft-lbs. The one on the right is the old pin that I then tried to re-use. It sheared between 40 and 44 ft-lbs.

The correct torque for these is 47 ft-lbs. Right?

Attached image(s)

Posted by: messix Feb 2 2006, 01:00 AM

maybe inch pounds?

Posted by: Cap'n Krusty Feb 2 2006, 01:15 AM

18 ft/lbs, just like any other 8mm threaded 8.8 bolt or stud. Your fault, NOT the part. The Cap'n

Posted by: bondo Feb 2 2006, 01:19 AM

Maybe 47 ft-lbs is the torque of the nut at the bottom of the ball joint?

Posted by: billd Feb 2 2006, 02:31 AM

The torque on the bottom nut is 180 ft-lbs.

The factory manual clearly lists this "Suspension strut bottom to ball joint" as 47.0 ft-lbs. (page 0.2-2/1) or is this for the old style - that had a hex bolt here?

Posted by: blitZ Feb 2 2006, 05:55 AM

QUOTE (billd @ Feb 2 2006, 12:31 AM)
The torque on the bottom nut is 180 ft-lbs.

The factory manual clearly lists this "Suspension strut bottom to ball joint" as 47.0 ft-lbs. (page 0.2-2/1) or is this for the old style - that had a hex bolt here?

I think that's for the castle nut on top of the ball joint. Sometimes I do a reality check when torqueing and I'm not sure if the torque value I found is correct. I ask myself, "Can that small threaded shaft handl xxx lbs"?, that's when I go double check my source.

Posted by: 9146986 Feb 2 2006, 08:25 AM

That was a spendy FUBAR! Those wedge pins aren't cheap!

What the Cap'n said.

Posted by: rhodyguy Feb 2 2006, 09:13 AM

i've been down this road. a couple of tips. really clean the hole in the strut and put a dab of lubricant on the pin (i used clean engine oil). lightly drive the pin fully in with a drift and hammer, the driven end should be pretty flush. DO NOT use the nut to draw the pin in. just a little bit more and, shit!, there goes $15. luckily for you that parts qualifies for free shipping from the bird.

k

Posted by: Cap'n Krusty Feb 2 2006, 09:37 AM

QUOTE (blitZ @ Feb 2 2006, 03:55 AM)

QUOTE (billd @ Feb 2 2006, 12:31 AM)
The torque on the bottom nut is 180 ft-lbs.

The factory manual clearly lists this "Suspension strut bottom to ball joint" as 47.0 ft-lbs. (page 0.2-2/1) or is this for the old style - that had a hex bolt here?

I think that's for the castle nut on top of the ball joint. Sometimes I do a reality check when torqueing and I'm not sure if the torque value I found is correct. I ask myself, "Can that small threaded shaft handl xxx lbs"?, that's when I go double check my source.

There is no "castle nut on top of the ball joint", not on 911s and 914s. The 47 ft/lbs is for the 10mm through bolt on the early struts. Again, if you don't have a clear picture of the situation, do some research! This stuff gets into the archives and misleads others! The Cap'n

Posted by: billd Feb 2 2006, 12:31 PM

Thanks for the advice guys. That was pretty stupid of me. Particularly the second one.

Posted by: Mueller Feb 2 2006, 12:38 PM

QUOTE (billd @ Feb 2 2006, 11:31 AM)
Thanks for the advice guys. That was pretty stupid of me. Particularly the second one.

at least you only broke a simple pin that can be replaced easily...I have a friend that didn't know the differance between ft/lbs and in/lbs....the aluminum case of his C4 transmission in his '66 Mustang suffered major damage from nearly 12 times too much torque trying to be applied