FE-FC Holden Discussion Forum
March 29, 2024, 09:07:46 AM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News: The FE-FC Holden Car Club of NSW are proud to host the 19th FE-FC Holden Nationals. Check out the announcement video for more.
 
   Home   Help Search Calendar Login Register  
Pages: [1]   Go Down
  Add bookmark  |  Print  
Author Topic: Pipe sizes and tube nut sizes  (Read 6010 times)
Pahs59
nsw-club
Junior Member
**
Offline Offline

Model: FE
Posts: 87

Throw nothing away leave that for your children


View Profile
« on: May 28, 2020, 04:41:27 PM »
0

Can someone confirm the steel pipe sizes for an FC Holden plus the tube nut sizes and threads
Brake lines...
Clutch line...
Fuel lines...
Carb to dizzy line...
Vacuum line from fuel pump to manifold

Logged
ardiesse
nsw-club
Guru
*****
Offline Offline

Model: FC
Posts: 1288



View Profile
« Reply #1 on: May 28, 2020, 07:04:20 PM »
0

Brake pipes, clutch pipe, manifold-to-vacuum-pump and wiper motor to vacuum pump pipes: 7/16" AF, 1/4" dia.
Fuel pipes: 1/2" AF, 5/16" dia.
Vacuum advance pipe: 3/8" AF, 3/8"-24 TPI, 3/16" dia.

Rob


Logged

Remember: if your Holden's not leaking oil, it doesn't have any.
Errol62
Guru
*****
Offline Offline

Posts: 1149


View Profile
« Reply #2 on: May 28, 2020, 09:41:42 PM »
0

Just watch out for metric size hex heads as that is what you may get now when you buy new ones. From memory 3/8” replaced with 10mm. I also had a metric clutch slave bleed nipple recently. Threads and pipe diameters are still imperial, just the heads.


Sent from my iPad using Tapatalk
Logged
Harv
Guru
*****
Offline Offline

Model: other Holden
Posts: 1318


View Profile
« Reply #3 on: May 29, 2020, 07:02:14 AM »
0

Just watch out for metric size hex heads as that is what you may get now when you buy new ones. From memory 3/8” replaced with 10mm. I also had a metric clutch slave bleed nipple recently. Threads and pipe diameters are still imperial, just the heads.

The "metric flats on imperial threads" fittings make me grind my teeth, like using pliers to undo nuts.

Thread sizes:
3/16" pipe uses 3/8-24UNF thread.
1/4" pipe uses 7/16-20UNF thread.
5/16" pipe uses 1/2-20UNF thread.
3/8" pipe uses 5/8-18UNF thread.

Cheers,
Harv
Logged
Dr_Terry
Senior Member
****
Offline Offline

Posts: 309


I love YaBB 1G - SP1!


View Profile
« Reply #4 on: May 29, 2020, 08:02:46 AM »
0

The "metric flats on imperial threads" fittings make me grind my teeth, like using pliers to undo nuts.

Thread sizes:
3/16" pipe uses 3/8-24UNF thread.
1/4" pipe uses 7/16-20UNF thread.
5/16" pipe uses 1/2-20UNF thread.
3/8" pipe uses 5/8-18UNF thread.

Cheers,
Harv

I'm with you Harv, metric A/F with imperial threads can be annoying, but there is a simple reason it exists.

The guys that manufacture the pipe nuts, can only purchase metric bar, i.e. nowadays in the case of 3/8" UNF pipe nuts, they are made from 10mm hex bar.

The cost of machining the bar to become 3/8" hex would be prohibitive compared to the cost of the actual nut. So 10mm A/F with a 3/8" thread it is !!

Dr Terry
Logged
my8thholden
nsw-club
Senior Member
****
Offline Offline

Model: FC
Posts: 812



View Profile
« Reply #5 on: May 29, 2020, 08:21:05 AM »
0

come on fellas ,its easy fixed ,just stamp your 10mm spanner 3/8 !!!!!!!Vern
Logged

these days i'm half as good for twice as long
ardiesse
nsw-club
Guru
*****
Offline Offline

Model: FC
Posts: 1288



View Profile
« Reply #6 on: May 29, 2020, 10:11:19 AM »
0

. . . actually it works the other way.  When your 3/8" AF spanner wears out, it magically becomes 10 mm.  And when your 1/2" spanner wears out, it becomes 13 mm.

Rob
Logged

Remember: if your Holden's not leaking oil, it doesn't have any.
Harv
Guru
*****
Offline Offline

Model: other Holden
Posts: 1318


View Profile
« Reply #7 on: May 30, 2020, 06:35:19 AM »
0

Sadly, for me it works out worse. I go to tackle a fitting, and am too stupid to clean it off properly. I try the 3/8", and because of the grease/rust/dirt it doesn't fit. I curse the 10mm hex bar issue and whip out the 10mm flare nut spanner. I then proceed to round off the corners on the 3/8 bleed screw  Roll Eyes.

Cheers,
Harv
Logged
my8thholden
nsw-club
Senior Member
****
Offline Offline

Model: FC
Posts: 812



View Profile
« Reply #8 on: May 30, 2020, 07:13:58 AM »
0

AAAH,HUH..so its you Harv ,you must have worked on LHR wheel cylinder of my car somewhere last century ,spose you change light globes with a stillson wrench too ,gotta keep larfin ...Vern
Logged

these days i'm half as good for twice as long
Pahs59
nsw-club
Junior Member
**
Offline Offline

Model: FE
Posts: 87

Throw nothing away leave that for your children


View Profile
« Reply #9 on: May 30, 2020, 05:58:57 PM »
0

Thanks to everyone for all the information..I’m ok with pipe sizes and can look at the head of a bolt or nut and know the size but have never been able to work out threads or thread sizes,It’s helped a lot and maybe helped others as well
Thanks again
Logged
Harv
Guru
*****
Offline Offline

Model: other Holden
Posts: 1318


View Profile
« Reply #10 on: May 31, 2020, 08:31:17 AM »
0

AAAH,HUH..so its you Harv ,you must have worked on LHR wheel cylinder of my car somewhere last century ,spose you change light globes with a stillson wrench too ,gotta keep larfin ...Vern

Harv's School of Tool Abuse. If you can't fix it with a hammer, you've obviously got an electrical problem  Grin

Cheers,
Harv
Logged
59wagon
Full Member
***
Offline Offline

Model: FC
Posts: 150


View Profile
« Reply #11 on: June 06, 2020, 05:13:50 PM »
0

The guys that manufacture the pipe nuts, can only purchase metric bar,

Imperial bar stock is still readily available - it’d be interesting to know why they don’t use it.
Cheers, John


Sent from my iPad using Tapatalk
Logged
Harv
Guru
*****
Offline Offline

Model: other Holden
Posts: 1318


View Profile
« Reply #12 on: June 06, 2020, 05:46:59 PM »
0

I’m guessing there is a big factory somewhere, making pipe fittings. They would make lots of metric stuff, and a little bit of imperial. Easier to buy just one bar stock, and just roll the threads different for metric/imperial.

Cheers,
Harv
Logged
Errol62
Guru
*****
Offline Offline

Posts: 1149


View Profile
« Reply #13 on: June 06, 2020, 07:54:34 PM »
0

I got a big surprise when I went to bleed my original looking clutch slave. Wound up pulling it off the mount, hose intact, as I didn’t want to butcher the bleed screw. It was then I discovered it was 10mm hex fitting size. Then when I went to buy wheel cylinder tube nuts they were 10mm.

Bought a nutsert gun and guess what, imperial thread sizes sorry what??! So now my car is a mix of metric, imperial, oh yes and whitworth!


Sent from my iPad using Tapatalk
Logged
my8thholden
nsw-club
Senior Member
****
Offline Offline

Model: FC
Posts: 812



View Profile
« Reply #14 on: June 07, 2020, 07:54:04 AM »
0

Gents  ..Westinghouse Air and Brake at Rydlemere make heaps of tube and tube fittings ,or used to ,its been a while 15yrs since I had any contact ,now known as Wabtec  ..new German owners ,you probably cant deal direct with factory but would steer you to an outlet I imagine ..Vern .
Logged

these days i'm half as good for twice as long
NES304
Guru
*****
Offline Offline

Model: FC
Posts: 2874


Yes Dear


nes304
View Profile
« Reply #15 on: June 17, 2020, 09:44:43 PM »
0

. . . actually it works the other way.  When your 3/8" AF spanner wears out, it magically becomes 10 mm.  And when your 1/2" spanner wears out, it becomes 13 mm.

Rob
Hahahha soooooo true


Sent from my iPhone using Tapatalk
Logged

DnD
Newbie
*
Offline Offline

Posts: 7


View Profile
« Reply #16 on: July 24, 2020, 12:55:05 PM »
0

Relay great information. Can anyone advise me of much pipe I need to replace both the fuel and brake lines?  Dermot
Logged
Pages: [1]   Go Up
  Add bookmark  |  Print  

Share this topic...
In a forum (BBCode) 
In a site/blog (HTML)

 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Valid XHTML 1.0! Valid CSS!
Page created in 0.037 seconds with 20 queries.