Mazda Rotary Club

Cars by Model Type => 1st generation RX-7's => Topic started by: rossonza on April 07, 2010, 07:38:04 PM

Title: making my own brake lines
Post by: rossonza on April 07, 2010, 07:38:04 PM
Looking into making my own braided brake lines. Does anyone know the sizes of the hoses and unions? My cars stored 30 minutes away so can\'t measure at the moment and would like to order parts for the weekend.

Thanks
Ross
Title: making my own brake lines
Post by: AtomicRex on April 07, 2010, 07:41:14 PM
What style of fittings are you looking to use?
 
Just go careful when doing this...screwing up when putting fittings together for water or oil may cause problems...but getting the brakes wrong wont help you stop!!
Title: making my own brake lines
Post by: rossonza on April 07, 2010, 07:47:13 PM
I\'ve no idea to be honest. I\'m not a very mechanical minded person. I do however have friends who are. So we thought we could save some cash and make nice lines. What are the standard?  Do you have any ideas?
Title: making my own brake lines
Post by: AtomicRex on April 07, 2010, 07:58:31 PM
We use goodridge for all of our lines: brake, fuel, oil, even water.  Personally they are one of the best.
 
I can save money on the fittings...so pass this saving to you and will make up the lines as part of that price.  Send me the lines...I can copy the lines for you, and at least then you know they are going to be done right.  It will still be cheaper than you buying the fittings yourself.
Title: making my own brake lines
Post by: rossonza on April 07, 2010, 08:09:47 PM
Thing is I can\'t get to the car until Saturday and I was hoping to be able to fit lines then....
Where are you based?
Title: making my own brake lines
Post by: A7RXY on April 07, 2010, 08:27:35 PM
(http://i558.photobucket.com/albums/ss30/d_i_ball/P1000483.jpg)(http://i558.photobucket.com/albums/ss30/d_i_ball/download221209403.jpg)
(http://i558.photobucket.com/albums/ss30/d_i_ball/P1000484.jpg)


The pic in the middle is for the body to axle hose
Title: making my own brake lines
Post by: rossonza on April 07, 2010, 08:41:30 PM
A7Rxy! Thanks a lot mate. Don\'t happen to know the thickness of the line do you? I\'ve looked everywhere :-(
Title: making my own brake lines
Post by: A7RXY on April 07, 2010, 08:44:04 PM
I\'m sure that the code on the middle pic hose say what spec they are.
 
    Dibs
Title: making my own brake lines
Post by: AtomicRex on April 07, 2010, 08:45:28 PM
If you can give me the thread sizes that would be perfect.  The lines will be AN03
 
But either way Ross...Im only about 60 miles from you near Bath
Title: making my own brake lines
Post by: Ian65 on April 07, 2010, 08:47:26 PM
Quote from: AtomicRex;685464What style of fittings are you looking to use?
 
Just go careful when doing this...screwing up when putting fittings together for water or oil may cause problems...but getting the brakes wrong wont help you stop!!

That\'s absolutely right. I\'d forget about trying to fabricate your own brakelines, pay the money and either buy some ready made or take Atomic up on his offer and get some professionally made up.
What price on your life?

When you stand on the brakes and the car doesn\'t stop it\'ll be too late to wish you\'d bought the proper brake lines.

I wouldn\'t entertain the idea of making my own.

Just my view on it!!
Title: making my own brake lines
Post by: A7RXY on April 07, 2010, 08:51:38 PM
Quote from: AtomicRex;685507If you can give me the thread sizes that would be perfect.  The lines will be AN03
 
But either way Ross...Im only about 60 miles from you near Bath

Sorry dont do thread sizes.
Title: making my own brake lines
Post by: captainbizzaro on April 07, 2010, 09:38:01 PM
I would get them made professionally mate i\'d hate to see you bend an S2 and hurt yourself  :eek:
Title: making my own brake lines
Post by: JBerg on April 08, 2010, 01:33:19 AM
Atomic, how much would a replacement braided set be? I\'m very interested too!
 
Thanks
 
Jon
Title: making my own brake lines
Post by: AtomicRex on April 08, 2010, 09:33:56 AM
If Ross, or anyone else, can send down the full set I will price up a group buy on these.
 
They will be using genuine Goodridge parts and identical to the original. You will also get a choice between stainless and plated.
 
Just to add this will be a sliding scale from 1 to as many as it takes...but dont worry if there are only a few people interested in this :)
Title: making my own brake lines
Post by: David Nock (RIP) on April 08, 2010, 11:02:26 AM
Ross....Don\'t attempt to make your own flexes. The internal pressures under emergency braking are massive. I think you will need the correct Goodridge swaging tool to stand any chance at all and if there was to be a problem on the road, heaven forbid, the insurance company would be very sniffy indeed about it if you hadn\'t done a professional job.

It\'s not like the metal lines which can be done with a flaring tool as a common DIY project.

It\'s getting the fitting to grip the flex solidly under pressure that I see as the problem.
Title: making my own brake lines
Post by: AtomicRex on April 08, 2010, 11:09:16 AM
David,
 
As much as I agree with you about not building the lines yourself, our lines are still not using swaged ends...but more reusable ends.  When done correctly these are just as good as the crimped versions....they seal perfectly, and are made to the correct lengths.  The ends will swivel so you don\'t have to guess at how many times you need to wind the hose in the opposite direction so that the line isn\'t kinked.
 
Along with other road car kits we have made, we use these in our own race cars...where the braking forces are a lot higher than any road car.
Title: making my own brake lines
Post by: David Nock (RIP) on April 08, 2010, 11:30:33 AM
Sorry, Fine I didn\'t realise that. But you\'ve also made the point that you know what you\'re doing.
We are also agreed I think....Flexes need to be professionally made up.
Title: making my own brake lines
Post by: 12at on April 08, 2010, 03:36:11 PM
give speedflow a call they will make the lines up for you no probs or you can do it yourself.

its not that hard.
Title: making my own brake lines
Post by: Ian65 on April 08, 2010, 03:44:23 PM
Quote from: David Nock;685670We are also agreed I think....Flexes need to be professionally made up.

Correct!!!
Title: making my own brake lines
Post by: johnnyboy on March 17, 2011, 07:45:02 AM
Quote from: rossonza;685461Looking into making my own braided brake lines. Does anyone know the sizes of the hoses and unions? My cars stored 30 minutes away so can\'t measure at the moment and would like to order parts for the weekend.
 
Thanks
Ross

What did you do in the end, Ross?
 
John
Title: making my own brake lines
Post by: Steve-A on March 17, 2011, 11:41:58 AM
Ross didn\'t!

He got distracted by sorting the rust out, then realised he was a bit out of his depth with how much rust there was to do, and sold the car to me!

I\'m pretty sure I shall be buying my flexi lines from Jon at Atomic Rex, just waiting for a quote on them and a whole bunch of other bits right now :)
Title: making my own brake lines
Post by: Lacey on March 17, 2011, 12:15:09 PM
AN03 I believe is what all of Prof\'s braided lines in his car are, but I sit to be corrected.
Title: making my own brake lines
Post by: AtomicRex on March 17, 2011, 12:32:57 PM
Brake Pressure lines are AN03 or M10, the supply lines are AN04
Title: making my own brake lines
Post by: Prof on March 17, 2011, 12:42:35 PM
Quote from: Lacey;749449AN03 I believe is what all of Prof\'s braided lines in his car are, but I sit to be corrected.

Nope - tis correct, and fittings are 10mm - but I bought ready made flexi lines - I\'d do the copper lines - as I have the flaring tool - but brakes are one area where pressures are much higher - and mistakes can\'t be made.
 
As Atomic already mentioned - getting the proper fittings yourself to make your own wouldn\'t really work out cheaper in one\'s or two\'s quantities.