Brake Pipe unions - what do I need?

For everything to do with Dolomites, Toledos, FWD cars and Dolomite-based kitcars.
Post Reply
Message
Author
User avatar
DavePoth
TDC Member
Posts: 5723
Joined: Tue Oct 03, 2006 4:50 pm
Location: Next to my Computer

Brake Pipe unions - what do I need?

#1 Post by DavePoth »

1976 Sprint, single master cylinder. I have no idea which unions I need to buy, is there a list of the required ones anywhere?
User avatar
sprint95m
TDC Member
Posts: 6503
Joined: Thu Aug 09, 2007 1:22 pm
Location: Caithness, Scotland

Well.......

#2 Post by sprint95m »

It is quite easy since these are Imperial fittings.
You need 3/8"UNF for 3/16" brake pipe, both male and female.

The quantities vary from car to car but for your car I think it is,
BMC to 4 way union.....2 males
4WU to flexis...(2 pipes) 2 males and 2 females
flexi to caliper ....(2 pipes) 2 males and 2 females
4WU to joiner....1 male and 1 female
joiner to flexi ....2 females
flexi to wheel cylinder...1 male and 1 female
wheel cylinder to wheel cylinder....2 males.

Totals:
10 male and 8 female.
I have listed them so you can double check the quantities. One 25' roll of brake pipe is sufficient.
(You can do away with the joiner and have one long pipe instead of two shorter ones if you wish.)
You can buy these unions from any motor factor.

http://www.ebay.co.uk/itm/Brake-Pipe-Un ... 1c3f463b4a
http://www.ebay.co.uk/itm/Brake-Pipe-Un ... 1c3f463b4a
These links show what you will need, but you will be able to buy these unions at a better prices for sure.



Ian.
TDC Forum moderator
PLEASE help us to maintain a friendly forum,
either PM or use Report Post if you see anything you are unhappy with. Thanks.
Magenta Auto Sprint
Guest contributor
Guest contributor
Posts: 1034
Joined: Sun Jul 19, 2009 11:41 pm
Location: Silsoe, Beds

Re: Brake Pipe unions - what do I need?

#3 Post by Magenta Auto Sprint »

I would also opt for brass fittings over steel and brass bleed vlaves as they don't rust in to the brake calipers.

Malcolm
User avatar
DavePoth
TDC Member
Posts: 5723
Joined: Tue Oct 03, 2006 4:50 pm
Location: Next to my Computer

Re: Brake Pipe unions - what do I need?

#4 Post by DavePoth »

Thanks both - that's a really big help.
DaltonBarham

Re: Brake Pipe unions - what do I need?

#5 Post by DaltonBarham »

Hi guys, i'm in a similar position, how much do the fittings vary from this to a a 1977 Dolomite 1300.
Thanks
Dalton
Jon Tilson
Guest contributor
Guest contributor
Posts: 11179
Joined: Tue Oct 03, 2006 9:45 pm
Location: Middlesex

Re: Brake Pipe unions - what do I need?

#6 Post by Jon Tilson »

The brake plumbing on yours will be pretty much identical. You just have a smaller servo and no load sensing valve
so your rear pipe is just one and not two.

Jonners
Note from Admin: sadly Jon passed away in February 2018 but his humour and wealth of knowledge will be fondly remembered by all. RIP Jonners.
User avatar
Toledo Man
Guest contributor
Guest contributor
Posts: 7542
Joined: Tue Oct 03, 2006 5:52 pm
Location: Halifax, West Yorkshire
Contact:

Re: Brake Pipe unions - what do I need?

#7 Post by Toledo Man »

What year is Dave's Sprint? If it is a later car it might have the tandem brakes. Dalton's has single line brakes and as Jonners has already pointed out, it has no load sensing valve and a smaller servo.
Toledo Man

West Yorkshire Area Organiser
Meetings take place on the first Wednesday of the month at 8.00pm at The Railway, 1 Birstall Lane, Drighlington, Bradford, BD11 1JJ

2003 Volvo XC90 D5 SE (PX53 OVZ - The daily driver)
2009 Mercedes-Benz W204 C200 CDI Sport (BJ58 NCV - The 2nd car)
1991 Toyota Celica GT (J481 ONB - a project car)
Former stable of SAY 414M (1974 Toledo), GRH 244D (1966 1300fwd), CDB 324L (1973 1500fwd), GGN 573J (1971 1500fwd), DCP 625S (1977 Dolomite 1300) & LCG 367N (1975 Dolomite Sprint), NYE 751L (1972 Dolomite 1850 auto) plus 5 Acclaims and that's just the Triumphs!

Check my blog at http://triumphtoledo.blogspot.com
My YouTube Channel with a bit of Dolomite content.

"There is only one way to avoid criticsm: Do nothing, say nothing and BE nothing." Aristotle
Post Reply