sdsurf Posted December 27, 2007 Report Share Posted December 27, 2007 What, in your humble opinion, Is the best brake set up for a 521. I am talking disc/drum, master cylinder, booster, etc... Give it to me all! Quote Link to comment
DanielC Posted January 7, 2008 Report Share Posted January 7, 2008 I just wanted to bring this to the top again. What brakes are you running on your 521? I am currently running a stock system, with 3/4 rear wheel cylinders. Quote Link to comment
sdsurf Posted January 8, 2008 Author Report Share Posted January 8, 2008 Stock, stock stock... I am thinking of getting one of beebanis brackets and getting the front disc set up. I also think I am going to get a master cylinder/booster off an early 620 to use. I don't know if I need a proportioning valve though. Probably keep the rear stock drums. Quote Link to comment
patrowan Posted January 8, 2008 Report Share Posted January 8, 2008 I have a 68 521 that use to have a 1300, when I put the v6 (vg30) & automatic in rear wheel first lock up became a problem. I replaced the rear wheel cyclinders with 11/16 bores and added a after market proportioning valve set for max drop. That helped but still rear first. I installed the disc, caliper, hoses of a 92 pathfinder on the front (the honda hat wouldn't work with my 14" usmags). I put a 96 pathfinder master cylinder with a 87 sentra booster. This worked out very well (about 3/4" pedal travel, force about what most new cars have) with the fronts finally locking up first. I think this is really due to the proportioning valve in the master cyllinder (after market one was removed) and the quick drop off x.4. I was a little concerned about the extra weight hung out on the king pins, put so far (they're very tight now what happens as they wear) nothing (shimmy, shake etc). I could have stopped there, but due to lazziness (adjusting, checking, replacing). I went ahead and replaced the rears with 88 izuzu tropper disc, caliper, hoses, ebrake. Adding the rear discs didn't seem to change anything much (maybe a little less pedal travel) the fronts still lock up first which is why I started down the path. Quote Link to comment
DanielC Posted January 8, 2008 Report Share Posted January 8, 2008 These are the part numbers I am using on the my 1970 PL-521. The brakes are basically stock. I did have the drums turned, the drums are still below .040 oversized. I am putting the smaller drums on the front, the front and rear drums on the truck are the same. When I say smaller, the front drums are still 10 inch, but they required less machining to clean up. My rear brakes had one wheel cylinder that was actually 13/16 inch bore, although the cylinder was marked as 3/4. That is why I bought a rebuild kit, and then wheel cylinders. I pick up front wheel cylinders today, and a new master cylinder. I will post those part numbers when I get them. Sorry, these are not Nissan numbers. These are from Raybestos. Front brake shoes 405 PG Rear brake shoes 406 PG Rear wheel cylinder rebuild kit, 3/4 inch WK 812 Rear wheel cylinder WC 37208 Front Brake rubber hoses BH 36737 Quote Link to comment
yello620 Posted January 9, 2008 Report Share Posted January 9, 2008 I have a 68 521 that use to have a 1300, when I put the v6 (vg30) & automatic in QUOTE] Wow, wow, wow, forget about the brakes now. We need details and pictures of the VG swap. I have been eyeing this swap for a while now. Please start us a new thread about the VG swap so this hijack can be returned to the brake issues. Jason Quote Link to comment
yello620 Posted January 12, 2008 Report Share Posted January 12, 2008 Why have i heard several times about someone that has a VG in a 521 or 620, but when asked for details, We get nothing. Jason Quote Link to comment
patrowan Posted January 12, 2008 Report Share Posted January 12, 2008 I put some info on the nwde site at someone else's request. I'll copy it over here in the truck section. Quote Link to comment
fiveNdime Posted January 13, 2008 Report Share Posted January 13, 2008 In my humble reply. I really hate to put all those bastard parts on my datsun. Point simply made, I would try to stick with the most simple setup possible, with Datsun/Nissan or aftermarket parts. 10 years from now someone who has the vehicle will go "What The Hell" after you've put that mass of crap onto your datsun to make it stop better. Just keep a good record, what ever you put into it. I know I will probebly piss people off saying this but I dont care......ooh ya I do have a 521 and It is stock as of now. Quote Link to comment
yello620 Posted January 13, 2008 Report Share Posted January 13, 2008 Patrowan, thanks for adding the extra info on the VG, looking forward to seeing the pictures also. Where are you located? Jason Quote Link to comment
patrowan Posted January 13, 2008 Report Share Posted January 13, 2008 The posting on the nwde site has the pictures, same name, same title around sept. Pat Quote Link to comment
sdsurf Posted January 23, 2008 Author Report Share Posted January 23, 2008 Alright... I found a master cylinder from a 81 z. Without the booster it is the vertical setup. Is this the on I want? 521 - beebani disc brake set up Quote Link to comment
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