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> Trans upgrade?, What are some good trans swaps?
Pdr1787
post Nov 26 2013, 06:33 PM
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Builing a 2.0l cammed port and polished with some dellortos. maybe thinking of a small turbo too but i have a tail shifter trans. I want to definitely replace it with something that will give me some smooth crisp shifts. any ideas? side shift, 930/915? (IMG:style_emoticons/default/type.gif)
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Pdr1787
post Nov 26 2013, 06:34 PM
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QUOTE(Pdr1787 @ Nov 26 2013, 04:33 PM) *

Builing a 2.0l cammed port and polished with some dellortos. maybe thinking of a small turbo too but i have a tail shifter trans. I want to definitely replace it with something that will give me some smooth crisp shifts. any ideas? side shift, 930/915? (IMG:style_emoticons/default/type.gif)


Building*....
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SirAndy
post Nov 26 2013, 06:43 PM
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A solid side-shift 901 will be plenty for what you're building. I'm running one behind my 3.6L and it has been holding up just fine for the last 6+ years.
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Dr Evil
post Nov 26 2013, 08:13 PM
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(IMG:style_emoticons/default/agree.gif) Rebuild it for better performance, though. A clapped out, used box will likely deliver frustration.
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Mike Bellis
post Nov 26 2013, 08:42 PM
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For power levels of your T4 your 901 is fine.

For "Crisp Shifts", good luck. A 40 year old transmission does not shift like a modern car. If you want crisp shifts and a mid engine tranny that can mount a starter, be prepared to spend big money... (IMG:style_emoticons/default/sad.gif)
http://mendeolamotors.com/trans-proto/inde...2&Itemid=65

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Eric_Shea
post Nov 26 2013, 09:05 PM
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901 side shift with updated linkage below (spherical firewall bushing, u-joints and multiple bronze bushings at the side shift console). Use a simple throw reduction for the shifter and call it a day.
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Dr Evil
post Nov 26 2013, 09:18 PM
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(IMG:style_emoticons/default/agree.gif) I had a rebuilt with stock, new bushings and a short shift and it would shock people how well it operated. Cheap and easy compared to other options.
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Bills914-4
post Nov 27 2013, 05:54 AM
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QUOTE(Eric_Shea @ Nov 26 2013, 10:05 PM) *

901 side shift with updated linkage below (spherical firewall bushing, u-joints and multiple bronze bushings at the side shift console). Use a simple throw reduction for the shifter and call it a day.


Here's a few pic's of my modifications (IMG:style_emoticons/default/smile.gif) plus a J West shifter , Bill D.
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ww914
post Nov 27 2013, 06:28 AM
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QUOTE(Eric_Shea @ Nov 26 2013, 07:05 PM) *

901 side shift with updated linkage below (spherical firewall bushing, u-joints and multiple bronze bushings at the side shift console). Use a simple throw reduction for the shifter and call it a day.


Eric
When you say "updated linkage below", what are you referring to? Do you sell these goodies?
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mepstein
post Nov 27 2013, 07:17 AM
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QUOTE(ww914 @ Nov 27 2013, 07:28 AM) *

QUOTE(Eric_Shea @ Nov 26 2013, 07:05 PM) *

901 side shift with updated linkage below (spherical firewall bushing, u-joints and multiple bronze bushings at the side shift console). Use a simple throw reduction for the shifter and call it a day.


Eric
When you say "updated linkage below", what are you referring to? Do you sell these goodies?


JWest used to sell a linkage kit for 914's. They stopped (still sell a renshifter) and Chris Folley at tangerine racing now makes a really nice one. http://www.tangerineracing.com/transmission.htm
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Eric_Shea
post Nov 27 2013, 07:28 AM
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I'm using the old j west system below. Basically what Chris is selling in the link Mark posted. Similar to what Bill posted above. Worth every penny Chris is charging.

The linkage below is where all of the slop is. The short shifters are basically reduction devices. I wanted a stock look and a hand throttle so I retained the stock shifter and used the simplest of the reduction devices. The Weltmeister.
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gothspeed
post Nov 27 2013, 10:05 AM
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QUOTE(WLD419 @ Nov 27 2013, 03:54 AM) *

QUOTE(Eric_Shea @ Nov 26 2013, 10:05 PM) *

901 side shift with updated linkage below (spherical firewall bushing, u-joints and multiple bronze bushings at the side shift console). Use a simple throw reduction for the shifter and call it a day.


Here's a few pic's of my modifications (IMG:style_emoticons/default/smile.gif) plus a J West shifter , Bill D.

looks freakin awesome!!! (IMG:style_emoticons/default/aktion035.gif)
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Eric_Shea
post Nov 27 2013, 12:50 PM
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Bill, I had one issue with my JWest install. The side shift console bushing plate is aluminum and would bind as I torqued the fasteners to spec. The unit cones with shims to accommodate this flex but it took a "lot" of trial and error and even shims cut in 1/2.

Is your bushing plate steel or aluminum? I was thinking steel wouldn't flex and i need to put another one of these together.

Sorry for the (IMG:style_emoticons/default/hijacked.gif)
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jimkelly
post Nov 27 2013, 01:50 PM
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I do not know that anyone has ever installed anything other than a 901 behind a type4 ???

KEP offers one kit for the type4 engine.

I wonder if a suby awd trans converted to 2wd could even feasibly be coupled to a type4 ??

I guess one would have to ask KEP.

http://www.kennedyenginc.com/Pages/EngineOptionList4cyl.aspx
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ChrisFoley
post Nov 27 2013, 02:45 PM
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QUOTE(Eric_Shea @ Nov 27 2013, 01:50 PM) *

Is your bushing plate steel or aluminum? I was thinking steel wouldn't flex and i need to put another one of these together.

Our aluminum bushing block doesn't flex. (IMG:style_emoticons/default/smile.gif)

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mittelmotor
post Nov 27 2013, 03:55 PM
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My Dr. Evil-rebuilt 901 is holding up great paired with a stock LS1 V-8. I never abuse it with drop-clutch starts, which I'm sure helps!

Racer Chris, I am VERY tempted by your shift upgrade kit. My side shifter has pretty good action already (fresh plastic stock bushings), but it could be further optimized.
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Pdr1787
post Nov 27 2013, 04:37 PM
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Thanks for the replies guys! looks like I'm going to look for a sideshiifting trans. I'm going to have to look for a new motor mount brace too. What about the linkage at the firewall. I know its different right. what am I going to have to do there? (IMG:style_emoticons/default/confused24.gif)
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jimkelly
post Nov 27 2013, 04:46 PM
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there are several online parts diagrams

http://www.porsche.com/usa/accessoriesands...partscatalogue/

http://www.autoatlanta.com/porsche-parts/p...e_914_parts.php

but you can't use any linkage from tail shift for side shift.

you'll need a shifter, tunnel rod, engine bay rod, etc.

you can use whatever exhaust you have (1.7/1.8/2.0) on your 2.0 but if you decide you want 2.0 style exhaust, you need to change everything there too.

are you doing fuel injection or carbs? what cam you using?
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gothspeed
post Nov 27 2013, 05:50 PM
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QUOTE(Racer Chris @ Nov 27 2013, 12:45 PM) *

QUOTE(Eric_Shea @ Nov 27 2013, 01:50 PM) *

Is your bushing plate steel or aluminum? I was thinking steel wouldn't flex and i need to put another one of these together.

Our aluminum bushing block doesn't flex. (IMG:style_emoticons/default/smile.gif)


Nice design, that added web will indeed make it more rigid. (IMG:style_emoticons/default/smile.gif)
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Bills914-4
post Nov 30 2013, 09:52 AM
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QUOTE(Eric_Shea @ Nov 27 2013, 01:50 PM) *

Bill, I had one issue with my JWest install. The side shift console bushing plate is aluminum and would bind as I torqued the fasteners to spec. The unit cones with shims to accommodate this flex but it took a "lot" of trial and error and even shims cut in 1/2.

Is your bushing plate steel or aluminum? I was thinking steel wouldn't flex and i need to put another one of these together.

Sorry for the (IMG:style_emoticons/default/hijacked.gif)



Eric, I machined that from a solid block of steel ( I won't do that again ) (IMG:style_emoticons/default/biggrin.gif) , I think I would bend a piece of 1/4-5/16 strap metal (flat stock) with a torch ,give enough length so that you can put the cover on, I machined mine then mounted it 3 bolts , I scribed a circle through the console tab with out the bushing ,then I removed the bracket and put hole in (that way it slides through the original console ear) I then put the hole on the other side , I used two original console bushings to make it easier in the future to find and change (IMG:style_emoticons/default/biggrin.gif) , I hope this helps Bill D.

here's a couple more pic's
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