521 lower front link bushing and seal help

[Socalman]

I don't know the name, I call them lower hub arm bushing. nevertheless, I cant find them anywhere, wondering if these are no longer made or if I should be asking for something out of a different vehicle? Thank you!

[Skib]

King pins

 

@mklotz70 is prob the only one with stuff for it lol

http://www.bluehandsinc.com/

 

 

[datzenmike]

Lower link bushing 2 per side 54504-20500 also used on the '73-'77 620 truck.

[Crashtd420]

1 hour ago, Skib said:

King pins

 

@mklotz70 is prob the only one with stuff for it lol

http://www.bluehandsinc.com/

 

 

Mike made the best ones but unfortunately not anymore....

 

 

He does have the best price for kingpins.... 

Reminds me I really need to get a set before he closes shop....

[Socalman]

I need the lower. That sucks. Thanks guys. 

[Crashtd420]

23 minutes ago, Socalman said:

I need the lower. That sucks. Thanks guys. 

Oh you need that one....

Got confused by the picture but I see it now....

 

Edited December 6, 2022 by Crashtd420

[Crashtd420]

So your looking for this....

 

https://www.ebay.com/itm/165784330233?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=2IrjI7vHTVy&sssrc=2349624&ssuid=2B08jY5FRkS&var=&widget_ver=artemis&media=COPY

 

 

Two things... only one available but i think you get a pair.... I'd verify before purchasing...

Also I know the 520 and 521 would be the same but I'm not sure about the 620.... 

Hopefully datzenmike can confirm any of this.. atleast you know what to search for....

 

[Socalman]

I am looking for the bushings for that part. I have the kingpin kit and the one you sent, but I do not have the rubber bushings for it. I only have the metal sleeve. 

[Crashtd420]

2 minutes ago, Socalman said:

I am looking for the bushings for that part. I have the kingpin kit and the one you sent, but I do not have the rubber bushings for it. I only have the metal sleeve. 

I'm not sure on that.... 

Isn't what your thinking about more of a seal vs a bushing...

 

[Socalman]

1 minute ago, Crashtd420 said:

I'm not sure on that.... 

Isn't what your thinking about more of a seal vs a bushing...

 

Yes. You’re right. Lol

[datzenmike]

2 hours ago, datzenmike said:

Lower link bushing 2 per side 54504-20500 also used on the '73-'77 620 truck.

 

OK it's missing from my drawing. I looked at the 620 and it comes up as a dust seal 54503-20500 and a search of it use, shows it was on the 521.

 

 

[Socalman]

8 minutes ago, datzenmike said:

 

OK it's missing from my drawing. I looked at the 620 and it comes up as a dust seal 54503-20500 and a search of it use, shows it was on the 521.

 

 

Yeah, but it’s not available. Unfortunately 

[datzenmike]

What about a generic neoprene O ring??? Just has to seal wet and dirt out.

[Crashtd420]

8 minutes ago, datzenmike said:

What about a generic neoprene O ring??? Just has to seal wet and dirt out.

Atleast we are all on the same page now....

This is what was thinking too... 

 

Mcmaster carr probably has something you could make work...

Get some basic measurements where it needs to be and go from there....

[mklotz70]

Looks like you guys have already gotten it cleared up that the rubber pieces are seals, not bushings.  The pin is called the fulcrum pin.  Unless it's super sloppy or you just want to replace everything, they're not usually bad enough to require replacement.  I've done vids before about how the pin and the nuts take a "set" to each other.  If you pull them apart, make sure that you put them back exactly the way they were.  Same nut on the front, same on the back, pin in the same direction it came out. If not, there's a really good chance you will get binding when the nuts are tighten.  It will seem fine until the last bit of tightening is done.  You'll have to swap things around until you find the original setup.  If you mixed the parts from both sides together while cleaning......have fun. lol

 

The last time we went through this about the seals and cotter bolts, I added some links to my king pin info page.  http://www.bluehandsinc.com/king-pin-rebuild-info.html

 

I don't remember if it was talked about when we were trying to figure out the seals, years ago......but that self sealing electrical tape might be a pretty good option.  https://www.eis-inc.com/product/electrical-tape-3m70x1?gclid=Cj0KCQiA7bucBhCeARIsAIOwr-8g7DedTgIauTQgX4S4x_QxOgY_B0TDUzixcU4qKs1rDgfhKmCH-WgaAsTjEALw_wcB

 

It wouldn't be pretty, but it just might work.  O-rings might, too.  The gaps on each side of the dog bone change when the joint pivots.  The bearing(bushing) is actually threaded, so the dog bone moves fore and aft as it pivots.  It's not much and I know I've shown it in rebuild vids before, but it's enough that it can't be anything solid.   

 

If anyone is looking to get a deal on front end parts that have already been gone through.....Kyia is swapping frames and is selling his 521 front end.  The king pins have been rebuilt and my aluminum brake kit is already on it.  I'm pretty sure he was/is on ratsun, but I'll post his IG contact....since I have it handy.  https://www.instagram.com/renaissance_sage/    I have no clue about the condition of the fulcrum pin seals or any other details.....if you have an interest, contact him.  I'm msging him to see if he's still here on ratsun.

[Socalman]

Good stuff. Thank you! luckily, I'm doing one side at a time.

[Stoffregen Motorsports]

Does anyone have an original seal? Even a used one? A pic and some dimensions may help to search for something other than an o-ring.

 

You can also get square edged o-rings. Maybe that would be better than a standard o-ring.

Edited December 6, 2022 by Stoffregen Motorsports

[banzai510(hainz)]

https://mossmotors.com/pin-fulcrum-lower-link-outer  somebody said this fits a 521 SAE

 

new pins

https://mossmotors.com/pin-cotter-unf

 

 

these Seals maybe will work call them or look to see if there is a 100-6 Austin Healey seal for the fulcrum pin side

https://mossmotors.com/seal-set-4-pin-seals-8-link-seals

 

but the Austin Healey 100-6 the fulcrum pin is the closest if not a replacement what somebody told me on here awhile ago  and should be documented on Ratsun as a replacement and the seals. Maybe Moss knows more. this is all I could fine but didnt reseach it long enough

https://mossmotors.com/seal-set-4-pin-seals-8-link-seals

 

Edited December 6, 2022 by banzai510(hainz)

[Stoffregen Motorsports]

Moss doesn't know shit. Just a bunch of desk jockeys.

 

But that seal kit looks promising.

[Socalman]

3 hours ago, banzai510(hainz) said:

https://mossmotors.com/seal-set-4-pin-seals-8-link-seals

Sweet! Thanks! 

[Socalman]

Ordered the seals (not bushings) 😂. I’ll keep you all updated on fitment. 

[datzenmike]

Adjusted the title so that a google search will turn it up. This was a learning experience for me and it might help someone else in the future.

[mklotz70]

I heard back from Kyia about the seals......he said he used silicone hose and it's held up great.  

[datzenmike]

Ooooh I like that idea.

[Stoffregen Motorsports]

4 hours ago, mklotz70 said:

I heard back from Kyia about the seals......he said he used silicone hose and it's held up great.  

I was going to suggest that, but cutting a hose nice and square isn't always so easy.