can anybody tell me what the o/d of the clutch master to slave cylinder hardline is??? the cylinder fittings seem to be a weird size... M12x1.00???
any comments??

Geoff

 

bump

 

Geoff-

Put the year of your car in your sig or sumthin, I forget what it is offhand.

My engine is out right now, will report back tonight.

To clarify (using Sharkskin's pic form his '78, mine will be form my GT, which is plumbed slightly different) , exactly what measurment do you want? No way is the hardline itself 1.2 cm in OD- do you mean:

A- The connection at the master,
B- the proximal hardline,
C- The fitting at the bracket
D- the distal hardline, or
E- the fitting at the slave?


(Dave A., I'm shamelessly using your pic, yell if you want me to take it down- I'll take my own tonight!)

 

hi Rob;

sorry i didnt realise the clutch systems were different

the diameter of the actual hard line D and B in your photo and the size of the hex head at E,

the size of the one you have would be most helpfull

the car is an 84 euro that i am putting a manual box into from 91 S4

 

Maybach,

The line for the clutch is a -4 hardline, it uses a M12 with 1.0 thread pitch as you have already found out for the connectors.
I have searched high and low for this and it is impossible to find. However that said you can get the -4 hardline at any autoparts store. The -4 hardline can be ran with JIC female ends as well.
So you could thread a JIC-NPT nipple into the slave and master if you take the housings and then run all -4 JIC hardware.

 

hi lizard

ihave no problems making the actual fittings at m12x1.0...... i assume they are like brake line connectors???? its just what the o/d of the tube is. Excuse my ignorance but what is -4?? in mm

regards

Geoff

 

Hi Geoff
-4 is normally 1/4" 0.25 inch, hard line/pipe is measured on O/D , if it was hose/soft line it would be 0.25 I/D.
-4 = 1/4", -6 = 3/8" , -8 = 1/2", -16 = 1"

P.S. try a hydraulic shop for fittings & pipe, theres one on the Slough trading est. near the power station.

 

hello stranger

so why dont they use brake line? i know the dia is smaller, does that impact on the capabilities of the system. Just asking .... as i will get the -4 size????
did u go to thames valley last week???????

Geoff

 

Geoff,
Martin is correct and you can get the -4 line even at hydraulic shops, both hard line and hydraulic hose. In this case you want hard line though.

I would use the larger line as it has a greater amount of flow over brakes.

 

Geoff

Go to Think Automotive in Isleworth

www.thinkauto.com

They made me up a new master cylinder to slave cvlinder hard line while I waited (took about 10 minutes) - cost about £20 in S/S braided hose.

Parts A-B-C in the above picture. On RHD cars there's no need for the short length of hard line between A and B. Just replace with a 90 degree connector onto the MC with a swivel fitting on the end of that onto the flexi line - straight to the hard line going to the Slave.

Check that the rear under tray's vertical fins are not rubbing on the hardline going to the slave cylinder.

 

I just used 0.25 brake line for mine used the old fittings it seems to work fine had a hose shop make me up a braided stainless flexline with compression fittings that went right over the end of the 0.25 line so I could make it whatever length I needed

Paul