![]() |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
![]() |
Highland |
![]()
Post
#1
|
Senior Member ![]() ![]() ![]() Group: Members Posts: 550 Joined: 8-August 11 From: San Diego, CA Member No.: 13,418 Region Association: Southern California ![]() |
Was wondering why the door bolts are pointy. Can I replace them with standard M8 X 22 coarse thread bolts? I know they're listed as 27 mm, but I assume that includes the point.
![]() |
![]() ![]() |
Superhawk996 |
![]()
Post
#2
|
914 Guru ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 7,219 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch ![]() ![]() |
In a manufacturing environment pointy or dog head bolts allow power tools to drive the fastener quicker and better with power tools. The point helps the bolt find center quickly and reduces the risk of cross threading without having to hand start bolts.
I have no idea how Porsche assembled back in the day, but, it's likely Hans held the door in position and Franz drove the bolts quickly with an air tool as Hans complained that it was about time to swap jobs and Franz should hold some doors in position. (IMG:style_emoticons/default/happy11.gif) Probably rough fit to hold in position 1st and tweaked later. |
TargaToy |
![]()
Post
#3
|
-NONSOLIS RADIOS SEDIOUIS FULMINA MITTO- ![]() ![]() ![]() Group: Members Posts: 713 Joined: 26-March 10 From: DelMarVa Peninsula Member No.: 11,509 Region Association: MidAtlantic Region ![]() ![]() |
So your bung hole doesn’t slam shut!
Oh, sorry. I thought you asked why turds are pointy... |
Superhawk996 |
![]()
Post
#4
|
914 Guru ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 7,219 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch ![]() ![]() |
|
bbrock |
![]()
Post
#5
|
914 Guru ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains ![]() ![]() |
Pointy also makes it easier for a one-person door install with a hand socket. The self centering bolt is just what you need to hold the door with one arm and get a bolt started in the top hinge with a socket wrench. Doing that with a regular bolt wouldn't be impossible, but a lot harder and greater chance for cross threading.
Oh - and also so your bunghole doesn't slam shut. (IMG:style_emoticons/default/happy11.gif) |
mepstein |
![]()
Post
#6
|
914-6 GT in waiting ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 19,963 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region ![]() ![]() |
|
IronHillRestorations |
![]()
Post
#7
|
I. I. R. C. ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 6,831 Joined: 18-March 03 From: West TN Member No.: 439 Region Association: None ![]() ![]() |
The reason they have a point is because the nut plate they bolt into floats in it's bracket in the door jamb and the point guides the bolt into the threaded boss in the nut plate.
|
raynekat |
![]()
Post
#8
|
Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 2,169 Joined: 30-December 14 From: Coeur d'Alene, Idaho Member No.: 18,263 Region Association: Pacific Northwest ![]() ![]() |
|
rgalla9146 |
![]()
Post
#9
|
Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 4,777 Joined: 23-November 05 From: Paramus NJ Member No.: 5,176 Region Association: None ![]() ![]() |
Was wondering why the door bolts are pointy. Can I replace them with standard M8 X 22 coarse thread bolts? I know they're listed as 27 mm, but I assume that includes the point. ![]() Not on early cars. For ease of assembly. Have you seen what fasteners look like in modern cars ? All are tailored for powered/robotic assembly. |
Krieger |
![]()
Post
#10
|
Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 4,808 Joined: 24-May 04 From: Santa Rosa CA Member No.: 2,104 Region Association: None ![]() ![]() |
|
Superhawk996 |
![]()
Post
#11
|
914 Guru ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 7,219 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch ![]() ![]() |
Was wondering why the door bolts are pointy. Can I replace them with standard M8 X 22 coarse thread bolts? I know they're listed as 27 mm, but I assume that includes the point. ![]() Not on early cars. For ease of assembly. Have you seen what fasteners look like in modern cars ? All are tailored for powered/robotic assembly. Spot on. Modern fasteners are designed for manufacturing. Notice many modern fasteners also have captive washers. Avoids wasted time and lost $$ being scattered on the floor from dropped parts as a line operator tries to put a washer on the fastener. Also ensures they don't forget to put on the washer. Here's a picture of modern bolt with dog point and a captive washer. Much less likely to cross thread than the pointed bolt in OP. ![]() |
Mark Henry |
![]()
Post
#12
|
that's what I do! ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada ![]() |
So your bung hole doesn’t slam shut! Oh, sorry. I thought you asked why turds are pointy... I'm still trying to perfect the perfect pinch. That's when you pinch off a loaf so cleanly that you don't have to wipe. TMI (IMG:style_emoticons/default/confused24.gif) |
TonyA |
![]()
Post
#13
|
Nachmal ![]() ![]() ![]() Group: Members Posts: 614 Joined: 17-November 16 From: Hilltown PA Member No.: 20,596 Region Association: North East States ![]() ![]() |
So your bung hole doesn’t slam shut! Oh, sorry. I thought you asked why turds are pointy... I'm still trying to perfect the perfect pinch. That's when you pinch off a loaf so cleanly that you don't have to wipe. TMI (IMG:style_emoticons/default/confused24.gif) Great technique to use while camping!! |
malcolm2 |
![]()
Post
#14
|
Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 2,747 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States ![]() ![]() |
So your bung hole doesn’t slam shut! Oh, sorry. I thought you asked why turds are pointy... I'm still trying to perfect the perfect pinch. That's when you pinch off a loaf so cleanly that you don't have to wipe. TMI (IMG:style_emoticons/default/confused24.gif) Change your diet KETO and Atkins..... Lots of cheese and protein. |
eatpez |
![]()
Post
#15
|
Newbie ![]() Group: Members Posts: 18 Joined: 4-October 18 From: Michigan Member No.: 22,543 Region Association: North East States ![]() |
Does anyone know if these bolts are M8x1.00 or M8x125? I pulled them out of my project car and I honestly can't tell for sure with the thread guide. I want to chase the threads in the plates but obviously don't want to screw that up.
The link to the VW chassis bolts shows M8x125 but I'd swear the ones that go back in easily are M8x1.00. |
eatpez |
![]()
Post
#16
|
Newbie ![]() Group: Members Posts: 18 Joined: 4-October 18 From: Michigan Member No.: 22,543 Region Association: North East States ![]() |
Does anyone know if these bolts are M8x1.00 or M8x125? I pulled them out of my project car and I honestly can't tell for sure with the thread guide. I want to chase the threads in the plates but obviously don't want to screw that up. The link to the VW chassis bolts shows M8x125 but I'd swear the ones that go back in easily are M8x1.00. Definitely M8x1.25. The passenger side all went in fine. Now for some careful thread restoration.... |
Highland |
![]()
Post
#17
|
Senior Member ![]() ![]() ![]() Group: Members Posts: 550 Joined: 8-August 11 From: San Diego, CA Member No.: 13,418 Region Association: Southern California ![]() |
Were the original door bolts painted in the car's color or plated?
|
mepstein |
![]()
Post
#18
|
914-6 GT in waiting ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 19,963 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region ![]() ![]() |
|
![]() ![]() |
![]() |
Lo-Fi Version | Time is now: 11th July 2025 - 08:33 AM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |