JasonAndreas

Due to a recent cleaning accident involving my passenger side cloth sport seat and an errant carpet beater I've been forced to replace the seat belt receptor 964.803.00.70B - $40.96USD. There is one bolt (see #16 in my hand-drawn sketch) that attaches the receptor/buckle to the seat so before I re-install the seat I would like to make sure the bolt is tightened correctly. If anyone has the torque value for the bolt could they please post it?

Thanks!

Doug H

I just tighten that sucker as tight as it will go. Anything wrong with that.

Jeff Curtis

One grunt should do it...I would imagine you'll go bonkers trying to find that value, not sure.

garrett376

That is a great method of measurement! Love it!

JasonAndreas

I will probably end up torqueing the bolt to one grunt. I'm going to try calling Porsche first; the bolt retails for $24 so there is something special going on here. Even for Porsche standards that is expensive.

Chris M.

Anyone have a torque # for the bolt on the B pillar?

c

JasonAndreas

50 Nm (37 ft-lb)

Chris M.

Great, thanks Jason. Is that somewhere in the factory service manual and I just missed it?

c

JasonAndreas

The front and rear anchor bolt part numbers are the same and so is the material they are attached to:

Seat Belt Bolt Cover - Deformed

May 29, 1990
Subject: Seat Belt Bolt Cover, Deformed

Model: 911C2/C4
Group: 6

Part Identifier: 6876

Number: 9004

ATTENTION: Service Manager/Service Technician

Models Affected: 911 Carrera 2 and 911 Carrera 4 Model Year 1989 (K) and 1990 (L)

Concern: Hot air from the engine heats up the right rear seat belt anchor bolt and deforms the plastic bolt cover.

Vehicle Information: A modified anchor bolt cover is installed from production date: August 28, 1989

VIN:
96_LS450081 Coupe
96_LS460062 Targa


Repair Information: The modified bolt cover can be installed in vehicles prior to the above VIN as follows:

Remove bolt cover and bolt (A in Figure).
Install new bolt, bushing and cover (B in Figure).
Torque bolt to 50 N-m (37 ft.lbs.).

Both sides, left and right should be modified.

Parts Information:
New Cover: 964 803 141 00
New Bushing: 999 924 064 02
New Bolt: 803 019 811 B

Paolo1

So 16, 2, and 8 each get torqued to 37 ft lbs? use loctite? thanks!

Greg Wolfe

Damn, I went to 1.5 grunts.

Mr. Wolfe

iangray100

Many be the reason its expenses in Porsche eyes it is not a metric thread so non standard , as seat belt bolt seem to have there own thread ;-)

LM964

My understanding is that the bolts are critical safety fixings capable of withstanding high energy impacts. You could not want to use a standard steel bolt (thread type aside). These are high tensile and high shear strength fixings. The thread I was told is "7/16-20 UNF pitch thread for all cars on planet Earth".

Seat rail hex/cheese head set screws also high strength, high tensile fixings.

No_snivelling

This UK bolt supplier states that most seat belt bolts are indeed 7/16" fine thread but they also mention a rare 11 mm fine thread only available from the dealer.
I am now curious. Jason, if you have not yet installed the bolt can you confirm which one Porsche uses?

https://www.bolts.co.uk/guides-and-t...at-belt-bonds/

JasonAndreas

This post was from 17 years ago... I know somewhere along the line I posted photos of the bolts but I can't find them on here.