Shift coupler bushing issues / 3rd set

[jimtweet]

This is now the third set of “genuine porsche” bushings I have ordered where the hole is oval. Is there a bad run of bushings or am I missing something? I order some aftermarket junk and they come in perfectly round and tight

[john walker's workshop]

They're all oval. Parts Klassic sells the round hole ones, if they're in stock. Late 914s used the round hole. FVD probably has them.

[Ian Comerford]

I’m pretty sure they are oval so that a certain amount of NVH doesn’t get through the linkage and into the cabin. I fitted a Stomski coupler a couple of years ago and get all sorts of noise coming through now. It’s really noticeable on road trips so I am going back to the original design.

[ErrorMargin]

Originally Posted by jimtweet

This is now the third set of “genuine porsche” bushings I have ordered where the hole is oval.

I went with brass bushings for the shift coupler. Much more precise than stock, but no extra noise.

https://www.pelicanparts.com/More_Info/RENTR18.htm?pn=REN-TR18&bc=c&q=brass%20shift

[pmax]

Originally Posted by jimtweet

That fit looks way worse than normal even for these oval bushings.

[jimtweet]

I can’t tell you how many of these couplers I have done over the years and this is the first I’m seeing this. I have never seen a oval or gap like this

[pmax]

Originally Posted by jimtweet

I can’t tell you how many of these couplers I have done over the years and this is the first I’m seeing this. I have never seen a oval or gap like this

As always, what JW said.

The factory bushings has always been like that.

Here's a set I had for years ...

[dtwa]

I put these round hole, delrin bushings in my 85 last year. A little more compliant than brass. No slack, but no noticeable NVH either. Very happy with them. —Dave

https://www.rauchandspiegel.com/product/shift-coupler-bushing-delrin-round-hole/


Sent from my iPhone using Tapatalk

[MBAtarga]

I learned something today.

NVH stands for Noise, Vibration, Harshness

I had no clue what you guys were referring to above.

[boyt911sc]

Originally Posted by MBAtarga

I learned something today.

NVH stands for Noise, Vibration, Harshness

I had no clue what you guys were referring to above.

Thanks for deciphering the NVH acronym. I had no idea what they stood for until you posted.

Tony

[Rsnellie]

Originally Posted by jimtweet

This is now the third set of “genuine porsche” bushings I have ordered where the hole is oval. Is there a bad run of bushings or am I missing something? I order some aftermarket junk and they come in perfectly round and tight

Curious if it is corrected by installing it in the coupler…

[jimtweet]

Originally Posted by Rsnellie

Curious if it is corrected by installing it in the coupler…

I tried there was no difference. I really have never noticed a gap/play like this in anyone I’ve done before. I would consider this excessive. I’m not expecting push tight fit, but this seems crazy

[PeteKz]

When you compress that bushing into the yoke, it will tighten up.

[eastbay]

As everyone has said, factory is sloppy, aftermarket tight.

[Schulisco]

Jim, I do not get what's the matter with the bushings? Why do you replace them? Shifting problems?

Thomas

[proporsche]

Originally Posted by PeteKz

When you compress that bushing into the yoke, it will tighten up.

yup the bushing will become rounder once it installed
Just for comparison.here is an original factory and it is owal....

Ivan

[ahh911]

I took the aftermarket "round" one and oval'd it out just very slightly, figured Porsche had a reason. It shifts fine.

Phil

[timc]

Getting ready to do the Shift Coupler, and Shift bushings. Does anyone know the pro/con of the following bushings for the Coupler:

Brass, Delrin, Powerflex, or OE/OEM?

[mepstein]

Even better, switch to the Stompski coupler.