scottpeterd

I ordered the 928-424-029-00-M260 rear coupler from Pelican last year, along with the the polygraphite bushings 99-1758-424-M523

The pin in the new coupler seems rather loose. Am I supposed to press the pin out of the bushings that came with the coupler and press in the new replacements?

Or can they be removed and replaced with without the use of a press?

Adamant1971

You need to press out the pin. Insert the new bushings from the inside then press the pin back in.

Hey_Allen

For what it's worth, I just installed a set of new (OE Porsche) bushings in my rear shift coupling, and was surprised at how loosely the pin fits inside the bushings.

GregBBRD

Uhhh....Porsche doesn't offer bushings for that coupler. Never has. They do offer a gearshift bushing for a '73-'76 914 (under a 911 part number), but they have a ton of play, due to the 914 application.

The play in the bushings was designed in to make sure that as the transmission and engine moved around in the chassis, that there was no pressure put on the gearshift pieces inside the transmission. And yes, I know that the gearshift is attached to the torque tube and so is the transmission (so there should not be any independent movement), but Porsche apparently decided to play it safe and build in a little play.

scottpeterd

Greg,

That makes a lot of sense.

So today I pressed the upgraded bushings into the old coupler. Really tight. But it has not gone on the car yet. A new rear coupler with some play was just installed yesterday.

So, should I leave the new one on, or replace it with the rebuilt one?

GregBBRD

Truthfully, I can't drive a 928 with no play and one with normal play and tell the difference. The slight travel in the bushings just gets "swallowed up" by the larger travel of the shift forks inside the transmission, for me.

Perhaps it is more obvious with a short shifter?

buccicone

I Wondered the same last week when I got a new coupler from Roger. After installing in the car, there was no perceivable play. The old Coupler had one bushing completely missing. I also thought it was strange the new coupler was so loose.

slownrusty

I just installed a short shifter with a new rear coupling and 928 Motorsports front coupling and it has really transformed the throws and the gearchange feel - very crisp.

Hey_Allen

I went and checked the part number for the bushings that I'd purchased from a vendor here, and found this: 911.424.223.03

So, you're correct about it not being sold by Porsche as a 928 part, but it is sold by Porsche.

Due to how much built in slack it had, I ended up tapping the ends on the pivot pin and installing tensioning caps to take up some on the slop.
I'll have to see how it feels once I have the car back on the ground and driving.