Shock Confusion

[74-911]

'74 911: original Koni's are nearing the end (rear only for this discussion):

Per our hosts catalog, 74-89 all use the same rear shock and they list it as a gas shock with external adjustment knob.

Per Koni NA site, they list a rear shock for 72-74 and a different shock for 75-89. From what I can tell, the 72-74 is hydraulic, the 75-89 is gas. However both of them must be removed to adjust (no external adjustment knob).

Something doesn't jive here. Pelican states the rear shocks are all interchangeable which sounds reasonable and I assume it would make no difference if the rears were hydraulic or gas as long as they matched. I assume Koni lists 2 separate shocks because that is the way they originally came, that is 75s and later had different Koni OE shocks than the 72-74s?

It seems strange that Pelican lists an external adjustment knob for their gas shock when Koni doesn't.

Any Shock experts out there who can shed some light on any of this ?

thanks,
jack

[RoninLB]

if possible get 4 new Bilsteins for street imo.

[74-911]

Originally posted by RoninLB
if possible get 4 new Bilsteins for street imo.

The front struts are Koni so Bilsteins aren't an option there and would really rather keep the same brand on all 4 corners.

[RoninLB]

If the rears are worn the fronts have one foot in the grave and the other on a banana peel.



"if possible get 4 new Bilsteins for street imo."
"The front struts are Koni so Bilsteins aren't an option there and would really rather keep the same brand on all 4 corners."

------- meaning you can't go for 4 new shocks?

[74-911]

Originally posted by RoninLB
If the rears are worn the fronts have one foot in the grave and the other on a banana peel.



"if possible get 4 new Bilsteins for street imo."
"The front struts are Koni so Bilsteins aren't an option there and would really rather keep the same brand on all 4 corners."

------- meaning you can't go for 4 new shocks?

Didn't mean I wasn't doing the fronts also, just that there is no confusion over what shock goes on the front.

I probably just need to discuss with Pelican, the rear shock they list for this car doesn't appear to exist on the Koni NA website is what is confusing?

[Wil Ferch]

This might be of help....see what I say in this thread-->

Front Koni reds/Rear Koni Yellows?

Normal Koni rear shocks are gas and need to be dismounted on the bottom mount to adjust. I don't know of any top-knob adjustable rear gas Koni's ( could be wrong). My set up is low pressure gas front ( with removable top knob) and special sport-yellow, non gas rear...2" shorter shock body for safe lowering...and a top-removable knob, like the fronts.

Since the stock setup I was replacing wasn't gas charged...I didn't want the hassle of re-indexing the rear bars due to the inevitable height change ( rises 1/2" or more) going to hi-pressure rear gas...even though I'm the author of the spring-plate angle calculator ( gussied-up via Widebody911- Thom Fitzpatrick- on a nice spread sheet set up).

Great set up....

- Wil

[74-911]

Wil,
That thread helped immensely. Thanks,
Jack