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SAAC Forum => SAAC Forum Discussion Area => Topic started by: kram350 on September 18, 2019, 10:41:30 PM

Title: Koni rebuild
Post by: kram350 on September 18, 2019, 10:41:30 PM
Thought some may be interested in what's inside a Koni. Shown is a 4-65 dated SP-1 82-1326 front shock, a different shock than the later SP-3 82-1388 unit. The valving in both are basically the same, but the threaded gland nut top is a totally different setup making the internal seals and piston rod/cylinder sightly longer in the 1388.  Shocks dated 11-64 SP-1's have an even different internal configuration and valving from those dated 3-65.  Many production changes over months which seem to minimize machining requirements, number of needed parts and simplified assembly. This unit was toast with a rusted/seized rod, totally clogged valve orifices, drain-back channels and locked up in the firm position. Parts in these shocks are quality and robust.  With clean-up, new seals and rod this should be really to go.      (http://www.saacforum.com/gallery/443-180919212414.jpeg)
Title: Re: Koni rebuild
Post by: CharlesTurner on September 18, 2019, 11:13:26 PM
Thanks for posting.

Do you know anyone that can re-bush the top mount part of an original shock to look correct?
Title: Re: Koni rebuild
Post by: kram350 on September 19, 2019, 08:04:45 AM
pm me
Title: Re: Koni rebuild
Post by: 6s1640 on September 19, 2019, 01:47:39 PM
Hi Kram350,

Very nice.  Thank you for sharing.  There are sure a lot of pieces.  Can you ID in the image what parts need replacing with a rebuild and do you have a source for those parts?

Thank you

Cory
Title: Re: Koni rebuild
Post by: chris NOS on September 19, 2019, 04:17:44 PM
yes , i would be interested too for upper bushing . :)
Title: Re: Koni rebuild
Post by: kram350 on September 20, 2019, 08:50:00 PM
I had the seals/gaskets custom made. Second row left to right piece # 2,5,6,7,10. The upper bushings are of urethane which I machine. The shafts are alloy case hardened steel,  center drilled, threaded, have four .030" and two 1/8" drillings all of which are extremely difficult to drill, especially thru the case hardening.  The real headache is disassembly and cleaning the small orifices. You will need some robust tooling to get them apart.