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> tail shifter rear linkage, 4s vs 6s
porbmw
post Oct 22 2012, 02:06 PM
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Are the tail shifter rear linkage covers the same for both 4s and 6s....Don't know WHY they would differ, but then.....

IF so, any sources out there for a clean unmolested one...(and if they different, any soucrecs for one going to a 6?

Thanks

Paul
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gms
post Oct 22 2012, 02:08 PM
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QUOTE(porbmw @ Oct 22 2012, 03:06 PM) *

Are the tail shifter rear linkage covers the same for both 4s and 6s....Don't know WHY they would differ, but then.....

IF so, any sources out there for a clean unmolested one...(and if they different, any soucrecs for one going to a 6?

Thanks

Paul

The 4 and 6 rear transmission covers are different (as well as the linkage)
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porbmw
post Oct 22 2012, 05:58 PM
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QUOTE(gms @ Oct 22 2012, 01:08 PM) *

QUOTE(porbmw @ Oct 22 2012, 03:06 PM) *

Are the tail shifter rear linkage covers the same for both 4s and 6s....Don't know WHY they would differ, but then.....

IF so, any sources out there for a clean unmolested one...(and if they different, any soucrecs for one going to a 6?

Thanks

Paul

The 4 and 6 rear transmission covers are different (as well as the linkage)



Thanks.

That pretty well figures....

Maybe I'd better ask this.....

Original 6 tranny, courtesy of T.C., with sideshift conversion courtesy of the good Dr. Evil....

Still need cover for a 6????
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toolguy
post Oct 22 2012, 06:31 PM
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The six cover is taller, no way to make a 4 fit on a 6 linkage. . They are extremely hard to find, and no such thing as a new one from Porsche anymore. . I had the factory do a search in 2011 and there are none anywhere in any dealers stock. . .

I finally found one after a year long search, it came off a 6 tailshifter that the owner converted to side shift. .

George at AA was going to make a repop a year ago and he never got enough orders to make the mold worth the cost. . IIRC, he was going to charge $100 a copy. . When you could get them 10 years ago they were less than $50 for a new one
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porbmw
post Oct 22 2012, 10:51 PM
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QUOTE(toolguy @ Oct 22 2012, 05:31 PM) *

OOOPs

(IMG:style_emoticons/default/poke.gif)
I"m a thinkin' and a hopin you may have answered my question....!
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GeorgeRud
post Oct 23 2012, 11:38 AM
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Actually, I can't think of any reason to not simply convert any 914 Trans to a side shifter if that's an option. I replaced the original transmission in my -6 with one, and the shifting is definitely nicer and tighter. Of course, I kept the original parts for originality purposes, but the side shifter is nicer.

The original -4 transmission had somewhat of a monkey motion linkage in my opinion. Later designs made more sense.
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rudedude
post Oct 23 2012, 12:03 PM
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Does the side shift linkage interfere in any way with stock six heat exchangers or anything else?
Thanks
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GeorgeRud
post Oct 23 2012, 04:13 PM
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I have factory heat exchangers on both of my cars ( one a 914 side shifter, and the other a vellios 915), and there were no interference problems on either.
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gms
post Oct 25 2012, 08:09 AM
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QUOTE(rudedude @ Oct 23 2012, 01:03 PM) *

Does the side shift linkage interfere in any way with stock six heat exchangers or anything else?
Thanks

I had to alter the stock 4 rear linkage piece to work around a 6 exhaust.
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porbmw
post Oct 25 2012, 11:15 AM
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QUOTE(gms @ Oct 25 2012, 07:09 AM) *

QUOTE(rudedude @ Oct 23 2012, 01:03 PM) *

Does the side shift linkage interfere in any way with stock six heat exchangers or anything else?
Thanks

I had to alter the stock 4 rear linkage piece to work around a 6 exhaust.



Even if I ask, guess it won't make much difference, will still have to deal with it...but ...

Was the 6 exhaust stock/heat exchangers....or headers....
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brant
post Oct 25 2012, 11:41 AM
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on my 6 with headers and a side shift....

the shift bar can literally be straight
this eliminates the curves of a stock -4 side shift bar that lead to more flex

it makes sense to produce a new bar with the optimum (or zero if you can) number of curves...

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porbmw
post Oct 25 2012, 04:50 PM
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QUOTE(brant @ Oct 25 2012, 10:41 AM) *

on my 6 with headers and a side shift....

the shift bar can literally be straight
this eliminates the curves of a stock -4 side shift bar that lead to more flex

it makes sense to produce a new bar with the optimum (or zero if you can) number of curves...



Makes sense, and will be done when I get there...trying to get a bunch of ducks in a row.

Thanks
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Eric_Shea
post Oct 25 2012, 07:24 PM
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Paul, use the side shift and get a used sideshift cover. You will have to stand off your -6 exhaust mount about 1" but otherwise, it's a clean install.

Brant's correct. I used a straight linkage rod. With the Rennshift Level III kit below and factory HE's I had a little issue back by the tranny console but, I think my HE's were bent a tad.

The -6 linkage is better than the -4 linkage and the sideshift linkage is better than the -6 linkage. My "stock" shift lever is "very" notchy and precise now.
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porbmw
post Oct 25 2012, 10:39 PM
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QUOTE(Eric_Shea @ Oct 25 2012, 06:24 PM) *

Paul, use the side shift and get a used sideshift cover. You will have to stand off your -6 exhaust mount about 1" but otherwise, it's a clean install.

Brant's correct. I used a straight linkage rod. With the Rennshift Level III kit below and factory HE's I had a little issue back by the tranny console but, I think my HE's were bent a tad.

The -6 linkage is better than the -4 linkage and the sideshift linkage is better than the -6 linkage. My "stock" shift lever is "very" notchy and precise now.




I was pretty happy with the stock 6 shift....can't wait to see how this will turn out.
Thanks for all the help!
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Eric_Shea
post Oct 26 2012, 01:39 PM
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Here's where I ran into issues...

It's not the pipe that's clearly visable in this shot, it's the middle pipe that's kind of darker behind it:
(IMG:http://www.914world.com/bbs2/uploads_offsite/sphotos-a.xx.fbcdn.net-1110-1351280345.1.jpg)

Again, I think my HE's were tweaked a bit but this was an easy fix with an acetolyne torch.

I would encourage you to find something similar here:
(IMG:http://www.914world.com/bbs2/uploads_offsite/sphotos-b.xx.fbcdn.net-1110-1351280346.2.jpg)

I believe James is no longer making these but, my assumptions were confirmed upon the first drive. The linkage is where 80% of the slop is (if not more). I needed to keep a stock shift console for the hand throttle and appearance in my build. I used a weltmeister SS kit and the Rennshift stuff down below.

(IMG:http://www.914world.com/bbs2/uploads_offsite/sphotos-a.xx.fbcdn.net-1110-1351280346.3.jpg)
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brant
post Oct 26 2012, 02:39 PM
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Here is ours... a straight-hollow-cromoly bar with twin apex joints.
the shifter inside is an AJRS special

we literally cut an ear off of a second housing and tig'd it onto this shift housing to make a double support for the longer linkage. the brass bushings are custom reamed to fit.

cover not pictured, but we made one similar to Eric's

you can also see we have a custom extended cup bushing holder... basically all of it is custom. a hand machined delrin firewall bushing too....


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Dr Evil
post Oct 26 2012, 06:18 PM
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I probably have a /6 cone if you are interested.
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