dayuumden Posted July 1, 2015 Report Share Posted July 1, 2015 Hey Ratsun Community, Ive been stalking the forum for a few weeks now and I realize this is the best place to ask for information. I have a 70 521 and i'm in a bind. Im reaching out to you guys to see if anyone can help me with a couple missing parts. Ive been in the process of replacing the components in my brake system. I found that some of the pieces on the system from the previous owner(s) did not match. To make a long story short, I am looking for part numbers: 41128-08000 and 41130-08000 which may have been superseded by 41130-04100. Is there anyone with those parts that can help me out? I am located in Socal but I can PayPal and provide a shipping label as well. I am trying to keep everything as factory as possible without mismatch parts and threads. Ive tried to purchase them online with the sites that claim they have it when I do a google search, but i have had no luck. All the local salvage yards do not have the truck in inventory. In addition, does anyone know what thread and pitch the connector bolt is? Any help is appreciated. Thanks in advance! D 1 Quote Link to comment
datzenmike Posted July 1, 2015 Report Share Posted July 1, 2015 If information about a part or where you might buy a new part is what you are after, you have come to the right place but if asking if anyone has one, it has to be in the form of a want ad in our classifieds... http://community.ratsun.net/classifieds/category/8-brakes/?sort_key=date_added&sort_order=desc 2 Quote Link to comment
dayuumden Posted July 1, 2015 Author Report Share Posted July 1, 2015 Thanks for the info, datzenmike. I was looking for a source either new or used. 1 Quote Link to comment
datzenmike Posted July 1, 2015 Report Share Posted July 1, 2015 I had a 521 back in the 70s but don't remember being much of a mechanic on it. One of the current owners of one will be along... 2 Quote Link to comment
DanielC Posted July 1, 2015 Report Share Posted July 1, 2015 Datsun 521 body parts are sized American SAE sizes. Brake lines are 3/16, and use 3/8-24 flare nuts. The bolt you circled might be that thread diameter, (3/8-24 or it might be the next size down, 5/16-24. Some 620 brake parts also will fit on a 521, but the 620 parts switched to metric threads. 2 Quote Link to comment
dayuumden Posted July 1, 2015 Author Report Share Posted July 1, 2015 Datsun 521 body parts are sized American SAE sizes. Brake lines are 3/16, and use 3/8-24 flare nuts. The bolt you circled might be that thread diameter, (3/8-24 or it might be the next size down, 5/16-24. Some 620 brake parts also will fit on a 521, but the 620 parts switched to metric threads. Thanks for your reply, Daniel. The 521 has me perplexed at times. I bought all new brake components and when I went to install the new cylinders and soft lines on the driver's side, the connector bolt wouldn't screw in. I removed it from the truck and noticed the thread was too large for the cylinder, so I swapped it out with the passenger side and it work. The connector bolt that wouldn't fit also had a bleeder valve that was smaller than 3/8-24. Also, the brake line didn't screw in correctly to the connector, which lead me to believe that the connector and connector bolt is from a different model. Perhaps, a 311 or 620 because it would only screw in a few threads and stop. I've been doing as much research as I can to get the truck back on the ground but it's been one thing after another, so I'm taking it task by task at this point. I've been in contact with DenmarkBoy, he said he has what I'm looking for, I'm really appreciative of that. Denny 2 Quote Link to comment
dayuumden Posted July 1, 2015 Author Report Share Posted July 1, 2015 I also want to thank the Ratsun community, because this forum has been a wealth of information. Denny 2 Quote Link to comment
Charlie69 Posted July 1, 2015 Report Share Posted July 1, 2015 I will look to night I have a 66 520 axle. 2 Quote Link to comment
dayuumden Posted July 20, 2015 Author Report Share Posted July 20, 2015 Would it be safe to rethread this connector bolt (Banjo Bolt) to 3/8-24? I believe this one is from a 620. 2 Quote Link to comment
datzenmike Posted July 20, 2015 Report Share Posted July 20, 2015 As long as cutting new threads doesn't remove too much metal. This is a part of your brake system, the most important safety device on your vehicle. Every effort should be make to keep it in perfect working condition. 2 Quote Link to comment
mrbigtanker Posted July 20, 2015 Report Share Posted July 20, 2015 As long as cutting new threads doesn't remove too much metal. This is a part of your brake system, the most important safety device on your vehicle. Every effort should be make to keep it in perfect working condition. C'MON YOU STILL GOT THE HAND BRAKE.LOL 3 Quote Link to comment
DanielC Posted July 20, 2015 Report Share Posted July 20, 2015 "Would it be safe to rethread this connector bolt (Banjo Bolt) to 3/8-24? I believe this one is from a 620." NO! A 521 only has a single reservoir master cylinder. Any brake fluid leak anywhere, you have no brakes. If you cannot get the correct bolt that fits the brake wheel cylinder, get a wheel cylinder that fits the bolt. I believe 620 brake cylinders will attach to a 521 brake backing plate, but all the fasteners that hold the wheel cylinder to the brake plate are Metric on the 620. You will also have to change the brake line flare nut to Metric. 2 Quote Link to comment
banzai510(hainz) Posted July 20, 2015 Report Share Posted July 20, 2015 I went thru this also I think I got my new bleed screws from the dealer and found Jap Nabco clyinders if I remember right. Its all boxed up as spares right now. 2 Quote Link to comment
dayuumden Posted July 20, 2015 Author Report Share Posted July 20, 2015 Thank you guys, Denmarkboy, just sent me a couple replacements! :) 2 Quote Link to comment
dayuumden Posted July 28, 2015 Author Report Share Posted July 28, 2015 Shout out to Denmarkboy for sending me exactly what I needed along with a spare! Thank you much! And, thanks to the Ratsun community for all the information and advice. 2 Quote Link to comment
Charlie69 Posted July 29, 2015 Report Share Posted July 29, 2015 I can not find the pair I had. Probably gave them to an old Ratsun member that I sent a bunch of parts to to help him out. 1 Quote Link to comment
Mody454 Posted July 19, 2016 Report Share Posted July 19, 2016 I know this is an old thread but I'm having same troubles locating parts. Has anyone found a source for the front banjo bolt or the rear y. I bought all new cylinders from AutoZone and didn't come with these parts. Now I see some on eBay that come with them but don't really want to rebut. 1975 620 1 Quote Link to comment
DanielC Posted July 19, 2016 Report Share Posted July 19, 2016 Try your local Nissan dealer. 620 parts are metric. 521 parts are SAE. 1 Quote Link to comment
Charlie69 Posted July 19, 2016 Report Share Posted July 19, 2016 Contact Gene Knight he should have what you need. Quote Link to comment
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