View Full Version : Rear shock bolts

05-18-2003, 10:53 PM
So what kind of bolts shall I use on my rear shocks. I have tried a few types but they still loosen. Klunkity klunk.

Dave Russell
05-19-2003, 12:28 AM
There was a previous discussion here:

If the holes in the shock bodies are enlarged the problem will be exagerated. I think that about the best that you can do is make sure that the holes are not oversize, use hardened flat washers under the bolt heads next to the aluminum, & grade eight bolts tightened to 40 ft lbs. & check frequently. If the holes are oversize (larger than .377") you can either bore out the holes & press in steel bushings or get new shocks with tighter holes.

The bolts are really too small for the application but it would be hard to get room for 7/16 bolts.

I found that a standard 9/16 socket was too large to fit in the tight space of the shock body & got a thinwall socket. You probably cannot get the bolts to proper torque with an open end or box end wrench. For reasons given in the above thread I don't think that using locTite will help much.

Shocks which have heavy duty valving or thicker fluid will make the problem worse.

05-19-2003, 11:43 AM
The shocks are new and yes tightening these is a bear. I used a grade 8 bolt before with a nyloc nut. I'll switch to flat and lock washer with a normal nut.

They stay tighened for about 600 miles then begin to slacken with the nylocs.

Another simple fix. Cheers dave.

Ed Kaler
05-19-2003, 02:41 PM
<< I used a grade 8 bolt before with a nyloc nut. >>

Do NOT use Grade 8 hardware is "shear" locations!!! graemlins/hammer.gif ONLY in just plain "clamping" situtions!!

The ONLY thing that came on these cars (and 99% of others) is Grade 5.

Grade 8 is BRITTLE compared to Grade 5 !!

Ed graemlins/cheers.gif
'63 BJ-7 (Hortense THE Healey)
Founding Member & Delegate, ILLINI Chapter-AHCA
(24+ YEARS)
Member, AHCUSA
Ed Kaler, Proprietor
" Just Brits "
Please visit my web site at:
www.justbrits.com (https://www.justbrits.com)

05-20-2003, 11:51 AM
I would be suprised if someone has not crafted an improved shock mount for this application. Seems like welding a few "surrounds" would provide some support here.

Any racers out there done some farm yard improvements like this?

Randy Forbes
05-21-2003, 10:25 AM
Best hardware I can think of is "airframe" bolts.
For any given length, they will have a long shank and only enough threads for the nut and a few "spacer" washers.
They are ordered by "grip length" (combined thickness of the parts to be bolted together) and are available in 1/16" to 1/8" increments depending on diameter.
Naturally, you would want to use a "jetnut" (all steel alloy locknut) to secure.
I guarantee your problems will be over.
Excellent for driveshaft flanges too.

Skip & Lynne
05-21-2003, 05:51 PM
For the fronts I am using airframe bolts with red loctite and lockwire, I also left the basecoat/clearcoat paint in the threads and when I ran the bolts in they were really snug. For the rears I welded small pieces of square stock to the flange to posistion the shock and then used red loctite with castellated nuts and cotter keys. Skip