Its EPDM. That is the only real rubber you can safely use with brake fluid
. Yes, it will break down if used with any mineral oil. This car is an early brake fluid (LHS2) car The only rubber I'm aware of that is brake fluid safe is EPDM. or heater hose (though in searching a lot of heater hoses are now not even EPDM, they are "synthetic" and not suitable for brake fluid).
www.norma.net.au
... and if that fails buy it in on fleabay.
. I really do think the issue is screwing these on when soaking in brake fluid ... that dries out over the next few years glueing everything together. ie: I've coated it wth silicon paste to prevent brake fluid filling the voids.
They had low viscosity gear oils back then, just not multi-grades.We have been having fun .... under the car and I a very slowly growing puddle of gear oil on That's strange. leaking output seals would be over next to the brake disc. Those bolts must be through into the gearbox sump? I'll try pulling them out and putting thread sealer on them. Maybe I caused this myself by putting modern very thin gearbox oil in there (I figured 75/80 grade gearbox oil would be way better... also in the CX gearbox too). I'm sure they would have used these thinner oils if they existed at the time
Its mostly cheap junk. I've been collecting cheap/junk tools since I was 16years old... I'm nearly 50years old now... so your looking at 36years of collecting the cheapest junk I could find at the time
If you asked me about the shed, I'd tell you everything wrong with it, not what is now usable. I guess we always see what "we want" as apposed to what we have 20+ years ago when I got most of the cars here, they were worthless too. $500 bucks would buy an ID19 to tinker with ... CX's were maybe $1500 for a driver.
I'm fortunate thee is very few rubber return lines on these cars... so i'm just going to replace them all. The nylon is in remarkably good shape. I did search the parts cars for the fuel line elbow. The parts car wtih no bonnet ... its fuel line disintegrated to the touch. So it not UV stable, but given its out of the sun, it seems to last forever
All the small nylon return lines and hydraulic fittings (and fuel line) really are amazing products to still be 100% usable ... 70 years later
They had low viscosity gear oils back then, just not multi-grades.
A lot of manufacturers also used engine oil or ATF in their manual transmissions back in the '50s and '60s.
Having said that your 75/80 gear oil has roughly the viscosity equivalence of an SAE 30W engine oil.
Type F (which was the common ATF back then) has roughly an SAE 20W viscosity index.
I remember a '70s 4 speed manual Volvo I had, suffered from a noticeable input shaft bearing rattle in neutral.
I swapped out the factory ATF for 20/50 engine oil and problem solved. The shift was slightly "firmer" in cold weather (until it warmed up a bit), but otherwise.
The epdm heater hose is $7.00 a meter that I found. So obviously, I'm ordering that line online ....
Bizarre its just EPDM hose that isn't really re-enforced. the markup on it must be 1000%! The heater hose will have more re-enforcement, so shoudl be more expensive, not a tiny fraction of the price .....A motor sport supplier here charges like that also--
My standard line anywhere I go for car project materials is " how much is it, you've got to ask these days I suppose"?So I just whipped upto enzed .... they had exactly what I needed there. They only had 2.5 meters of the 8mm line, but I figured it owuld be enough, and 1 meter of 6mm line. They label it as remote brake reseviour line (not heater hose, same stuff). So I grabbed that, two brass fittings and a tiny chunk of 1/2" epdm and 6mm fuel line.
"That'll be $186.00 mate" ... after I picked myself up off the floor ... for some weird reason I queried the price. Get this ... $50 a meter
seeya,
Shane L.
