Datsun Roadster Forum-311s.org

Hey there, I'm checking in after many years of inactivity with the forum. I live outside Washington, D.C., and have a 1968 SRL with Solex carbs. I'm embarrassed to say I did a Very Bad Thing: I parked my roadster in the garage and didn't drive it for several years. My guilt finally got to me and I had it towed to a garage last week. They've got it running but can't get any brake pressure. They think it needs a new brake master cylinder and rear wheel cylinder. Boy, things have gotten expensive in the roadster parts world. Looks like about $500 to $700 to source a NOS master cylinder. Does that sound right? Any suggestions on where to get?

Of course, I really want to be sure when it comes to brakes, since as important as it is that the car goes it's even more important that it stops.

John Kelly

Welcome back.

Assuming the brake system was completely flushed out, refilled and then bled properly, you can always try to rebuild the master if it isn't pitted inside. But first make sure the rubber lines aren't shot. They do get soft and will flex and cause a soft pedal.

I am sure others with more knowledge will chime in.

tim

You can use the Datsun 510 master with an adapter to change the connector. Way less expensive. See the Wiki-Parts-Parts Interchange- Brakes. Or a search for 510 master will have the posts.

Linda

If you get your cylinders re-sleeved it will be a lifetime fix. Original replacement parts will get it done fast and correctly but will cost more than having yours done in stainless or brass. If you can wait and send them out for rebuilding and sleeving they will be corrosion resistant for the long term. Get stainless brake hoses while you're at it.
if your core is bad I have a few master cylinders.


how's the fuel system?

Thanks for the info. I'm just back after a few days of vacation away from the computer. I think the fuel system is good. I know they cleaned out the fuel tank. How does one go about re-sleeving the cylinder? Sending it out?

Some contacts here:
http://www.311s.org/phpBB3/viewtopic.ph ... post+apple

You can also us a 240-280 Z master cylinder.
You need adapter fitting from NAPA or such to go from metric on the master cylinder to standard on the roadster brake line.

Rock Auto has them for >$100.........
Have they bled the master cylinder ....IIRC you should have 2 bleed screws on the MC. Have them run lines into the reservoir and them bleed........either that or attach a vacuum bleeder to the bleeder screw........This is assuming they don't have a power bleeder they can make fit....they are the best.