Need suspension help for a 78 750, rear shock suggestions

[one_civic]

IMG_0080.jpg old style

[one_civic]

Seal_Kit.jpg new style

[one_civic]

seals sleeves new 7610 0470.jpg Robert Haag machined a sleeve if you would like to use the newer style seal, I used his NOS seals, If anyone on this forum would like more info or to purchase rebuilt Koni's or parts for their older Koni's, send him an email,

Robert Haag / Konimon on ebay

or

rhaagusa@yahoo.com

I called him up and he gave me great advise and some tricks on rebuilding older Koni's

[azr]

Great info, thanks for posting this all up.

[one_civic]

I have a bunch of detailed photos saved but can only post 1 per comment due to size so if anyone needs more info on rebuilding the older style "emulsion oil / air" Koni's send me a PM,

Cheers

[Chuck78]

Those are pretty good shocks after a rebuild. The valving is still sorta old school, not up to par with Ohlins, YSS, or fancy modern shocks, but a fairly huge improvement over stock, and a good match in dampening quality to cartridge emulators up front. They are a twin tube setup which is way better than a standard emulsion design, almost as consistent in dampening as a piggyback/IFP.
Beatnic (Doug from DEK Performance Suspension, GS750 fanatic on dotheton.com and here occasionally) told me the reason you see a lot of them that are locked up or have no dampening is because the top out bumpers deteriorate and chunks of them get jammed in the valving of the shock.
Otherwise, they are a great shock for the money if you find a rebuildable set with shafts with good chrome.

I have a set of 76F-1296's sitting here for a GS425 475cc 10.5:1 stripped down lightened racer build with Suzuki 43mm RF900R cartridge forks, Shindy Nissin 6 piston caliper, and CBR1100XX Blackbird 310mm rotor. 3.50x18 & 2.50x18 DID alloy rims, Pirelli Sport Demon 140/70-18 rear and 110/80-18 front. The 76F-1296 is a clevis bottom alloy body version with no externally adjustable dampening. I am curious what the 76P is in comparison to a 76F. Length difference?

[one_civic]

If I remember the 76P-1296 Koni's on my bike are roughly 13.5" clevis to eye

[Chuck78]

The 76F-1296 are 340mm or a but over 13-3/8 but less than 13-1/2"