murphus Posted September 7, 2016 Report Share Posted September 7, 2016 Does anyone know a good source for suspension parts? I picked up a pretty sweet 1972 PL521. Very clean body, solid drive train, runs and drives quite nicely once I swapped a Weber carb for the Hitachi that turned out to be improperly assembled and missing parts. Anyway, the king pins and lower fulcrum pins have seen better days, so the front end is loose. I'd like to tighten it up but I'm not having much luck finding replacements. Richard 1 Quote Link to comment
datzenmike Posted September 7, 2016 Report Share Posted September 7, 2016 Welcome to Ratsun Richard. As to parts, I'll let a 521 owner help you out. Let's call it suspension and steering components. If suspension is worn then the steering probably is too. 1 Quote Link to comment
banzai510(hainz) Posted September 8, 2016 Report Share Posted September 8, 2016 MKlotz(Mike Klotz) on here can fix the kingspins and has the side smaller pins that's always get smashed when pulling out. . I had a guy do mine and they just mashed the pin in the bore. They need to be honed to the pin size after the bushings are installed as the squeeze down. autozone has the king pin kits for 144$ (replica parts or something like that. or find the Jap made Bunko /Culture brand one on ebay ect...... the lower fulcrum usually don't wear out. but I had to cut mine out. and neede another which I had a spare. Your a new 521 owner so remember the body on 521 are a SAE size and threads(5/16 x24 but the motor will be metric size and threads 10x 1.5mm something like that 1 Quote Link to comment
flatcat19 Posted September 8, 2016 Report Share Posted September 8, 2016 People in Mexico are starting to build new parts for these, including king pins. King pin sets can be found on eBay from $70 and up. As for the other pieces, it's getting to be real hit or miss no matter where you look. RockAuto used to have crazy amounts of parts but it seems that well is drying up rather quickly. 1 Quote Link to comment
banzai510(hainz) Posted September 8, 2016 Report Share Posted September 8, 2016 MIke has spare spindals so He can rebuild a set while you still drive and swap out when ready 1 Quote Link to comment
murphus Posted September 8, 2016 Author Report Share Posted September 8, 2016 Hey guys. Thanks for the replies. I'm really surprised to learn that Autozone can get king pin kits! But there they are, from Rare Parts. That's great. I haven't looked, but I'm assuming I can PM Mike through the site? Richard 1 Quote Link to comment
flatcat19 Posted September 8, 2016 Report Share Posted September 8, 2016 Mklotz70 is Mike's username. His website is bluehandsinc.com 1 Quote Link to comment
banzai510(hainz) Posted September 8, 2016 Report Share Posted September 8, 2016 most other infor is on Olddatsuns.com the tech section. read that and youllm know about 95% of the stuff needed to keep a L motor running. 1 Quote Link to comment
Crashtd420 Posted November 14, 2016 Report Share Posted November 14, 2016 Has anyone ever discussed the torque specs for the fulcrum pin and the upper spindle link? It says 175 ft pounds on the ends... I don't remember it being that hard to remove them... 1 Quote Link to comment
hobospyder Posted November 14, 2016 Report Share Posted November 14, 2016 Youtube bluehandsinc and king pins. Mklotz goes into intense detail about the king pins over the course of 2 (I think) videos 1 Quote Link to comment
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