Stoffregen Motorsports Posted April 7, 2021 Report Share Posted April 7, 2021 Lots of Spridget guys here. Who knew...? Mike Klotz said he ordered a handfull to measure for himself. I guess we'll find out soon enough. FWIW - I don't even own a Datsun anymore. I just hang out and try to help where I can. 3 Quote Link to comment
Charlie69 Posted April 8, 2021 Report Share Posted April 8, 2021 8 hours ago, Stoffregen Motorsports said: Lots of Spridget guys here. Who knew...? Mike Klotz said he ordered a handfull to measure for himself. I guess we'll find out soon enough. FWIW - I don't even own a Datsun anymore. I just hang out and try to help where I can. Are you saying you are a troll? LOL 1 Quote Link to comment
wayno Posted April 8, 2021 Report Share Posted April 8, 2021 For what it is worth, the early 620 with a kingpin front end use the same cotter pin/bolt except the threads and nut which are metric. Also the 320 collumn shift levers on the outside of the transmission are held in position on the shafts by these same cotter pins/bolts. Mike is correct, I told him when I take the nut off I remove the lock washer and then put the nut back on far enough to put another nut on the end of the pin/bolt and I lock them together leaving the top nut so the end of the pin/bolt are slightly countersunk, this leaves about a lock washer gap as I recall, then I take a punch and put it in the countersunk part and I firmly tapped on it till it moved, then I would back the nuts off a little bit at a time and keep tapping until it was loose, a few times I did not have enough bolt left to use 2 nuts so I had to use only one nut in this process keeping the end of the pin/bolt in the countersunk hole the nut makes, the nut protects the threads from mushrooming, this did not work every time, but I saved more than I lost. So it appears the 320 all the way until the 620 was changed over to the ball joints are the same, but I only checked out a few 620s in the wrecking yards, so i don't know all the 620 trucks with kingpin front ends use this cotter pin/bolt, it is just a educated guess they do, I only removed them pins from a couple of them and I don't remember what years they were, but as I recall all the pins I removed from a 620 were black and appeared to be of a better metal as none of them got ruined removing them that I recall. 2 Quote Link to comment
mklotz70 Posted April 8, 2021 Report Share Posted April 8, 2021 7 hours ago, Charlie69 said: Are you saying you are a troll? LOL Trolls are never helpful. lol I got the first one in already and it's way smaller. One down, 3 more sets to go. I'm thinking that the next two will be the same as this set, but maybe that last set I ordered will be right. 1 Quote Link to comment
mklotz70 Posted April 8, 2021 Report Share Posted April 8, 2021 Wayno is correct....the threads switch to metric on the cotter bolts, but the dimensions of the bolt itself are the same. I'm pretty sure I've already bought the nylocs, so I'll do the threads to match the nuts.....either 1/4-20 or M6x1.00. 1 Quote Link to comment
Stoffregen Motorsports Posted April 8, 2021 Report Share Posted April 8, 2021 Really? That small? I figured they would have been 8x1.25 or 5/16-24. 1 Quote Link to comment
mklotz70 Posted April 9, 2021 Report Share Posted April 9, 2021 The correct cotter bolt is an M8 with a M6x1.00 thread or a 5/16" with a 1/4-20 thread. This first set is a 1/4" bolt....I'll have to measure it. Another set showed up just now.....I'll check them in the morning. Once they've all shown up, I'll do a comparison and post a photo or two. 2 Quote Link to comment
debbheff@gmail.com Posted April 9, 2021 Report Share Posted April 9, 2021 try moss motor sports, select shop by model select the 100, 100-6, 3000 from left side menu select suspension then front suspension. i purchased the fulcrum pin part 65 and it is a direct replacement for the datsun fulcrum pin (for my 521). the other parts associated with the fulcrum pin may work also they appear to be the same or similar. 2 Quote Link to comment
mklotz70 Posted April 9, 2021 Report Share Posted April 9, 2021 29 minutes ago, debbheff@gmail.com said: try moss motor sports, select shop by model select the 100, 100-6, 3000 from left side menu select suspension then front suspension. i purchased the fulcrum pin part 65 and it is a direct replacement for the datsun fulcrum pin (for my 521). the other parts associated with the fulcrum pin may work also they appear to be the same or similar. Great description on how to find it. Thanks! I just took a look.....the pins look like they're the same, but the nuts on either side are not. Replacing just the pin should eliminate half of any wear. The cotter bolts look a bit different, but I've already got those on order. 1 Quote Link to comment
banzai510(hainz) Posted April 9, 2021 Report Share Posted April 9, 2021 (edited) https://mossmotors.com/austin-healey-100-100-6-3000/suspension-steering/king-pin-set thanks Debbheff. those sure look like the big fulcrums pins I could use as spares with the grease caps mine rusted in place and had to sawzall them out and lucky I had spares from ted in olympia Edited April 9, 2021 by banzai510(hainz) 1 Quote Link to comment
mklotz70 Posted April 10, 2021 Report Share Posted April 10, 2021 Since the cotter bolts are tied in with the kingpin rebuilding, I thought I'd put this link here. This is page 5 of a rebuild thread I did on Ratsun.net. There's info here about the fulcrum pin seals. Near the bottom, oldskoolvws posted a link to a MGB option that works. I ordered the equivalent seals with one of my cotter bolt orders....they came in as cork seals.....which may work for the older 520/320 connections. Maybe someone knows of a similar seal that is a bit smaller. http://britishpartsdirect.com/index.php?route=product/product&filter_name=aaa1323&product_id=811 1 Quote Link to comment
Charlie69 Posted April 10, 2021 Report Share Posted April 10, 2021 13 hours ago, mklotz70 said: Since the cotter bolts are tied in with the kingpin rebuilding, I thought I'd put this link here. This is page 5 of a rebuild thread I did on Ratsun.net. There's info here about the fulcrum pin seals. Near the bottom, oldskoolvws posted a link to a MGB option that works. I ordered the equivalent seals with one of my cotter bolt orders....they came in as cork seals.....which may work for the older 520/320 connections. Maybe someone knows of a similar seal that is a bit smaller. http://britishpartsdirect.com/index.php?route=product/product&filter_name=aaa1323&product_id=811 These seals work I have used them. 1 Quote Link to comment
mklotz70 Posted April 11, 2021 Report Share Posted April 11, 2021 I'll try to do a video fairly soon. I just got the other 4 pieces in from the last recommendation......they're the ones. In fact, the four of them are cheaper shipped than I can make/ship them for......so I will NOT be making them. I'm going to contact them about ordering a bunch to go with the kingpin kits, but I will not be reselling them by themselves. I'd have to mark them up and my shipping is a lot more. I'll post the info for them on my site when I post the kingpins for sale. https://mossmotors.com/pin-cotter-unf?assoc=135520 3 Quote Link to comment
Coop Posted April 14, 2021 Author Report Share Posted April 14, 2021 On 4/11/2021 at 8:42 AM, mklotz70 said: I'll try to do a video fairly soon. I just got the other 4 pieces in from the last recommendation......they're the ones. In fact, the four of them are cheaper shipped than I can make/ship them for......so I will NOT be making them. I'm going to contact them about ordering a bunch to go with the kingpin kits, but I will not be reselling them by themselves. I'd have to mark them up and my shipping is a lot more. I'll post the info for them on my site when I post the kingpins for sale. https://mossmotors.com/pin-cotter-unf?assoc=135520 Just ordered a few, thanks so much! I can't believe this was figured out so quickly. Thanks, 2 Quote Link to comment
Coop Posted April 14, 2021 Author Report Share Posted April 14, 2021 Just wanted to let everyone know, I have ordered some seals for the fulcrum that I have been told might work. I will post photos when installed. About a 4 week wait as they were out of stock. But will update on fitment https://www.thewedgeshopstore.com/seal-king-pin-lower-mgb/ 2 Quote Link to comment
mklotz70 Posted April 15, 2021 Report Share Posted April 15, 2021 Just posted a vid on my youtube channel with the info. The info is also on IG and FB now, but I can find it on YT more easily down the road. 5 Quote Link to comment
d.p Posted April 15, 2021 Report Share Posted April 15, 2021 Hell yeah Mike! Doing the lords work for us 521 homers. 2 Quote Link to comment
mklotz70 Posted April 16, 2021 Report Share Posted April 16, 2021 Huge shout out to Stoffregen Motorsports for providing links to the cotter bolt options!!! Big thanks to debbheff and Coop for the info on the fulcrum pins and seals. When I get a chance, I'll link this thread on my site and post up the kingpin kits I have available. The shims I had on order came in yesterday. Since the cotter bolts are available thru Moss Motors, I'll be able to post up the kingpins soon, rather than waiting until I get them made. 6 Quote Link to comment
mklotz70 Posted April 17, 2021 Report Share Posted April 17, 2021 I was thinking about how Moss doesn't have 100 of them and considering making them if they run out. Then it dawned on me that they're probably not the only supplier. lol I found a couple of other places that show having them. A couple of the places have a minimum order which is inconvenient when you only want two $4 bolts. I'm tempted to order a few dozen to include with the kingpin kits. I'm also looking at small anti-seize ampules, too. I have lots of anti-seize around here, but someone else may not want to buy a $30+ tube/tub of it. I'll have to think about that and research it some more, but for now, I'll put links to the other places I've found for the cotter bolts. https://www.englishparts.com/products/14423/661-890.html https://www.lbcarco.com/cgi-bin/or17?nextform=/orderinprogress.html&o=9757533.22966143147&p= In the UK... https://www.ahspares.co.uk/austin-healey/big-healey/suspension-front/cotter-pinnut-king-pin.aspx This one was found using the factory Part# and says it's for the clutch fork. https://britishcarspecialists.com/store/product.php?product_id=170&backtoshop_url=http%3A%2F%2Fbritishcarspecialists.com%2Fstore%2Findex.php%3Fcategory%3DCLUTCH%26subcategory%3DHOUSING Even thought to look in Australia. lol https://britishclassicspareparts.com.au/british-vehicle-parts/suspension/cotter-pin-austin-healey-1004-1006-3000-bn1-bj8-austin-a40-a60-devon-cambridge-freeway-a70-a90 The loctite I'm looking at.... https://www.rshughes.com/p/Loctite-LB-8008-Anti-Seize-Lubricant-2-G-Pouch-51299-IDH-234302/079340_51299/ I think that ought to do. Seriously, the main reason I did this is so that I can refer back to it later. lol :) Looks like there's plenty of sources available....I don't see any reason to make them. Now the question is do I order a bunch for the kits? 2 Quote Link to comment
zed1 Posted April 17, 2021 Report Share Posted April 17, 2021 I know I am late to this game, however has anyone tried Kip Motors? (https://www.kipmotor.com/shop/) Part 2A4090 may/may not interchange https://www.king-cart.com/kipmotor/category=Metropolitan+Suspension+and+Steering+Front+Suspension&cart_id=12218.9199&exchange=&exact_match=exact Keith 2 Quote Link to comment
mklotz70 Posted October 21, 2021 Report Share Posted October 21, 2021 On 4/14/2021 at 9:26 AM, Coop said: Just wanted to let everyone know, I have ordered some seals for the fulcrum that I have been told might work. I will post photos when installed. About a 4 week wait as they were out of stock. But will update on fitment https://www.thewedgeshopstore.com/seal-king-pin-lower-mgb/ Did you ever get these installed? I'm curious how they fit. Quote Link to comment
mklotz70 Posted June 15, 2023 Report Share Posted June 15, 2023 Marty came up with this option for the fulcrum pin cotter bolts. https://www.treatland.tv/cotter-pin-p/cotter-pin.htm?1=1&CartID=0 1 Quote Link to comment
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