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-   -   Jwest shifter binding (http://forums.pelicanparts.com/porsche-911-technical-forum/999773-jwest-shifter-binding.html)

freeform911 06-17-2018 03:52 AM

Jwest shifter binding
 
I recently purchased a used rennshift for my 86 915. It seems when i tighten the rod bracket the shifter binds. I've tried placing the bracket both on top of the tunnel and under the tunnel. Seems either way, it puts the bracket at an angle. If i leave the rod bracket disconnected everything shifts fine. WHAT AM I MISSING??

I appreciate any thoughts.

freeform911 06-17-2018 05:14 AM

Think i need some sort of spacer to keep the rod bracket in line?

'78 SC 06-17-2018 07:04 AM

The guide bracket mounts directly to the bottom of the shifter and not to the chassis tunnel.

Here's the installation sheet.
https://www.jwesteng.com/shop/instructions/RennShift_web_instructions.pdf

GK81 06-17-2018 08:05 AM

Can you post some pictures?

freeform911 06-17-2018 08:26 AM

Thanks for the feedback.
Think i figured the problem out. It appears that the shifter base had a small spacer attached to the bottom to relocate the rod bracket into the tunnel, instead of mounting on the top of the tunnel.
I glued 2, 1/2 brass bushings to the bottom of the base and installed with m6 1.00×40 bolts. The only issue is the bolts are not cap style, they are a Phillips head. Not sure how important the cap style bolts are for proper operation, but I'm trying to locate a few now and will replace them.
Thanks Steve

freeform911 06-17-2018 08:29 AM

78 sc, you're absolutely right, but it needs a spacer or it pulls the rod up instead of staying horizontal.. thanks for the help..Steve

'78 SC 06-17-2018 09:13 AM

Seems like spacing the guide bushing downward would prevent the bushing on the lower end of the shift lever from seating properly in the socket on the end of the shift rod.

How do we know the rod has to be horizontal?

freeform911 06-17-2018 09:29 AM

It didn't place it downward. It kept it inline to be straight.
Even with the bracket bolts finger tight right against the jwest base put the rod at an upward angle, which bound up the plastic rod bushing. Setting the rod bracket about 1/2 off the base stopped all the binding.
Apparently the new jwest bases don't require a spacer and the rod bracket stays on top of the tunnel.
It seems to be working properly, but cant drive it until i put my starter back in.

freeform911 06-17-2018 09:36 AM

Just went to look at the cup bushing. There's less then an 1/8" of the bushing sticking out of the cup. I'm thinking that's pretty normal? It seemed that the jwest shifter lever might be just a touch longer than the factory lever!?

RDM 06-25-2018 02:25 PM

The older JWest shifters came with a small aluminum spacer to space the rod bushing down ~8mm (if my memory serves). The newer ones don't need it. Did you get that piece with your used shift console? Do you need measurements? I will be home tomorrow and can get dimensions for you.

freeform911 06-25-2018 04:30 PM

RDM, i bought the shifter used and it didn't have the spacer. Ultimately i used a few 1/2" brass bushings to relocate the rod bracket. As of now the shifting is pretty good, but hoping to get it perfect with a little fiddling with the coupler.
Thanks for the offer though, its much appreciated.
Steve

RDM 06-29-2018 03:05 AM

For the sake of future readers with this problem, the spacer is 10 x 20 x 40 mm and looks like this:

http://forums.pelicanparts.com/uploa...1530270218.jpg

The green wire is not a part of the installation (of course).


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