What Hardware Needed for 964 RS Mounts?

[Danimal]

I’ve come across threads where people state that they have used the 964 RS rubber engine mounts as transmission mounts for their 986. However, I could not find anything about what hardware is needed for them. Does anyone know what additional parts are needed? I asked pelican and got an email stating they had never heard of that mod.

These the mounts I’m considering:
https://www.pelicanparts.com/More_Info/96437504381KIT.htm?pn=964-375-043-81-KIT-INT&gad_source=1&gclid=Cj0KCQjwudexBhDKARIsAI-GWYWvAu0TFOG1dgkhg_9Ns-XP9YHa2hHIPuZ2E32GPG5_NYFXih3nCZcaAq5VEALw_wcB

[elgyqc]

Originally Posted by Danimal

I’ve come across threads where people state that they have used the 964 RS rubber engine mounts as transmission mounts for their 986. However, I could not find anything about what hardware is needed for them. Does anyone know what additional parts are needed? I asked pelican and got an email stating they had never heard of that mod.

These the mounts I’m considering:
https://www.pelicanparts.com/More_Info/96437504381KIT.htm?pn=964-375-043-81-KIT-INT&gad_source=1&gclid=Cj0KCQjwudexBhDKARIsAI-GWYWvAu0TFOG1dgkhg_9Ns-XP9YHa2hHIPuZ2E32GPG5_NYFXih3nCZcaAq5VEALw_wcB

It seems to me I have seen something along those lines somewhere, but I don't remember where.
I went with PRG transmission mounts which are about the same price for a pair.
https://www.prgproducts.com/product-page/porsche-boxster-caman-986-987-transmission-mount
Just install them on your brackets and torque to 60 ft/lbs.
No affiliation, just a satisfied customer.

[Danimal]

Thanks, I was looking at those as well. My concern is the polyurethane compressing or deforming. On the Rennlist forum, several users said the wevos and rennline ones would deform and get loose after not that long of use. Have you had a chance to check yours?

So I was thinking of going with rubber….but there are reports of the URO rs mounts also saggy, so….i don’t know what to think anymore.

That said I did fit a complete RS kit offered by Rennpart for the 996 that I think will fit for $269

[The Radium King]

iirc the 911 mounts are used when you want to lower the engine (ie, engine swap). they have a longer bolt which allows for the use of spacers.

[elgyqc]

Originally Posted by Danimal

Thanks, I was looking at those as well. My concern is the polyurethane compressing or deforming. On the Rennlist forum, several users said the wevos and rennline ones would deform and get loose after not that long of use. Have you had a chance to check yours?
...

I installed mine less than a year ago and have not inspected them since. You can change the polyurethane pucks.

[Danimal]

I think I’m going to give them a try. If the pucks compress is there enough thread to tighten them back up? I’m thinking any material (rubber or poly) will compress a bit.

Originally Posted by elgyqc

I installed mine less than a year ago and have not inspected them since. You can change the polyurethane pucks.

[elgyqc]

Originally Posted by Danimal

I think I’m going to give them a try. If the pucks compress is there enough thread to tighten them back up? I’m thinking any material (rubber or poly) will compress a bit.

In an emailed from Greg at PRG he mentioned the following:
"There is a crush sleeve, get the bolt tight, about 60lbs. The bolt torque has no relevance on the bushing preload. The bushings are set to a predetermined preload by the length of that sleeve. you could machine a longer or shorter crush sleeve if you wanted to try different settings "

[Danimal]

I decided to go with the rein replacement mounts and plan to poly fill the void around the bolts. Similar to a function first mount. There is a DIY on it for 997s. I'm waiting for my liftbars to arrive, so have some time to do it and let them dry.

I got the new mounts for $120 at rock auto.