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> Shift bushings, Bronze
spunone
post May 17 2006, 06:23 PM
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Has anyone used the Bronze shift bushings that are selling on e-bay? if so hows the install? (IMG:style_emoticons/default/confused24.gif) our should I stick with the plastic?
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spunone
post May 17 2006, 07:51 PM
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(IMG:style_emoticons/default/icon_bump.gif) (IMG:style_emoticons/default/icon_bump.gif) (IMG:style_emoticons/default/icon_bump.gif)
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Rotary'14
post May 17 2006, 08:31 PM
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I'm using this one,,

http://cgi.ebay.com/ebaymotors/Porsche-914...sspagenameZWD1V

Is this the bushing you're asking about?

It replaced a plastic one that was shot. It seems like I'll never have to replace this bushing again. It slips right in to the shift housing and is held in with a snap ring. It was really easy to install.
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iamchappy
post May 17 2006, 08:40 PM
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That looks like a nice product. He should make one for the firewall as well.
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Rouser
post May 17 2006, 08:50 PM
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I purchased a similar product from GPR couple years ago and it works just fine:

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If your side-shift housing is ovaled out (as mine was) from the previous bushing flopping & banging around, you might have to JB Weld it into place to ensure that IT doesn't do the same, causing a sloppy shifter.
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brant
post May 17 2006, 09:07 PM
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QUOTE(iamchappy @ May 17 2006, 07:40 PM) *

That looks like a nice product. He should make one for the firewall as well.


The reason the firewall is not made is that each chassis varies in its dimensions there....

we had a firewall turned out of delrin.
you have to measure your chassis and have one made specifically for your chassis if you go this route.

delrin is argueably better than brass for this application.

partly the reason the factory plastics are soooo... hard to install.
they are one size (large-ish fits all)

brant
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iamchappy
post May 17 2006, 09:12 PM
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I see...
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hwgunner
post May 18 2006, 09:13 PM
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Paul, dropped this off at the PO about 30 minutes ago. Will be on its way in the morning. Let me know what you think.

Sorta funny that I found this tonight.
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Mark Henry
post May 19 2006, 05:50 AM
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I made my own about 4 years ago for my side shift. Easy to do if you have a lathe. It's been in 2 tranny's and shows no wear at all.

BUT I had to hone it to get a good fit on the (sanded) shaft. I WAS thinking of offering this but I felt fit would be an issue. I measured several shafts and the spec was all over the place, mostly do to wear I believe.

I found that without a good tight fit brass was just a waste of time. The only way to make sure it fit every (any) shaft was to make it sloppy to start with.

I'd love to see the ID spec on this, my bet it's way too big on the ID, making it not much better than your worn out plactic one.

Oh...and notice that Rouser JB welded his OD into the hole in the housing... Do to wear these holes are also way out of wack. So I bet the OD is also sloppy.
JB weld is the ticket on the OD but when you do it put everything back together before it hardens
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Brian Mifsud
post May 19 2006, 11:14 AM
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I made/ use bronze (oil-lite).. works dandy. Make sure you replace that piece of crap sitting (socket bushing) behind the clutch release fork. It is plastic and can/does collapse. It will drive you nuts trying to figure out why after tightening the clutch cable to it's fullest extent, you still can't disengage.... also made if from oil-lite.
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Gary
post Oct 26 2006, 06:52 AM
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I need one of these. I'm chasing down my shift into first issues, and it's down to this bushing and the shifter. I'll probably go rennshifter at the front end.

If I send an O.D. on my shift rod, anyone with access to a lathe that can make one up?
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Dr Evil
post Oct 26 2006, 07:25 AM
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Bob (no idea of screen name) gave me a couple of these at Welby's house when we were working on Welby's car. He said that all shift rods were very close in tolerance and that he had no problem making them work and fitting them tight with one universal dimention, IIRC. I was skepticle so he picked up Welby's shift rod and showed me how well the bushing fit. I will likely JB one into my shift console. Some day I would like to make them custome if people could give me their dimentions. I have a lathe, but not time to learn it right now (IMG:style_emoticons/default/dry.gif)
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Dr Evil
post Oct 26 2006, 07:30 AM
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QUOTE(Gary @ Oct 26 2006, 08:52 AM) *

I need one of these. I'm chasing down my shift into first issues, and it's down to this bushing and the shifter. I'll probably go rennshifter at the front end.

If I send an O.D. on my shift rod, anyone with access to a lathe that can make one up?


Gary,
If this is particular area of the shifting mechanism is causing your problem then it will be painfully obvious. Go under your car, grab the shift rod right infront of the shift bushing onthe tranny and see if you can move it up and down/side to side. If you have any appreciable plat in it your shift console on the tranny is shot and you need to either get another console ( I have a good one and will trade you for the bad one + shipping) or try to JB weld the hole and re round it to the proper dimentions. You can try to install the bushing, too if you want, but you may not need it. I have a bushing that you can try if you choose that route, but I an in need of a worn shift console for a project that I am working on so a trade woudl be nice as well (IMG:style_emoticons/default/idea.gif)
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rick 918-S
post Oct 26 2006, 07:43 AM
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I have some linear bearings and a section of 3/4" precision shaft. These are really cool. If I could work out a seal to keep out dirt I'd use them on my shift linkage.
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michaelt55
post Oct 26 2006, 07:53 AM
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I am one of the ones that purchased the bushings off ebay. They worked great, made a big difference in the shift. Thanks Jonathan..

Michael
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Bartlett 914
post Oct 26 2006, 07:54 AM
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I also made mine out of brass (not bronze). I expect it will wear out and I will repalace it with oilite. I didn't have any on hand earlier. My console was worn out. Looks like this is a very common problem. My solution was to mill the hole oversixe and make an oversize bushing. My bushing uses a "C" clip on the inside to hold it in place.
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cooltimes
post Oct 26 2006, 07:59 AM
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QUOTE(rick 918-S @ Oct 26 2006, 08:43 AM) *

I have some linear bearings and a section of 3/4" precision shaft. These are really cool. If I could work out a seal to keep out dirt I'd use them on my shift linkage.


Sealing a linear motion bearing is available at this link or many others too.

http://www.nookindustries.com/pdf/LinearSeals.pdf

This is only one place. They have the seals where ever you got the linear motion bearings and shafts you have. There is also an option. Wiper seal which works good too. Always keep the shafts lubed or the bearings will create grooves in the shafts.

MikeCool
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Cap'n Krusty
post Oct 26 2006, 08:59 AM
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partly the reason the factory plastics are soooo... hard to install.
they are one size (large-ish fits all)

brant
[/quote]

Well, they're actually made in TWO sizes, early and late. There's a 3rd size, early car to late shift rod, but the OD is the same as the early car's. The OE parts are difficult to install because they have a huge lip that holds the bushing in place after it's installed. Given the relatively low failure rate, the degree of difficulty isn't much of a problem. The Cap'n
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MoveQik
post Oct 26 2006, 09:06 AM
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What size wheels can I fit?
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Available from Patrick Motorsports(duck...here comes a Z rant (IMG:style_emoticons/default/biggrin.gif) ) for $38.

I'm getting one for mine as my bushing has popped out twice, even after the JB Weld treatment.



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Gary
post Oct 26 2006, 08:29 PM
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Thanks for the tip. I'll give PMS a call tomorrow. Any thoughts on how to ream to 0.850 inches?
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