75 GTA
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Short Shift

Post by 75 GTA »

I there!

I always dreamed about reducing gear shift travel.

Has anyone done this to his transaxle?

Thanks in advance... :D
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MD
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Post by MD »

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SydneyJules
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Post by SydneyJules »

And from my experience of the shift on the weekend, I can tell you that it is more like an MX-5/Miata than an Alfetta.

Its farking insane!
Fixing it bit by bit....
75 GTA
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Post by 75 GTA »

Thanks for the link!

Let me take a good look at that!
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matt
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Post by matt »

Bit off topic but on the weekend.........

..............who won then????????????????? 8)

and don't give me this "we drove like gentlemen on the roads" crap !

The 3.0 slickshift or the 2.5 Group A screamer :D
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Mezevenf
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Post by Mezevenf »

The 3.0L 24V 75 ;)

Just kidding, we didnt get to have a proper romp, although Julians GTV6 sounds *nice* :D.

I couldnt stop looking at MD's beast in my rear vision mirror though :)

MD's 3.0L and Julians 2.5 never got to drive near each other unfortunately, maybe another time.
Bernard M (AKA Mef - Mezevenf)

1986 75QV 3.0L 24v V6 - Silver
1985 GTV6 2.5L 12v V6 - Red
1999 166 3.0L 24v V6 - Red

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Post by MD »

Hey Bernie,

I am told the Club is getting a huge vet bill and the Departement of the Environment is after your butt. The report alleges the death of 72 Koalas, 3 possums, 15 white crested cockatoos and an old vino sleeping on the park bench when you drove past them.

That exhaust is a KILLER !! :D
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Plastic Pig
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Re: Short Shift

Post by Plastic Pig »

75 GTA wrote:I always dreamed about reducing gear shift travel.

Has anyone done this to his transaxle?
My GTV6 has a "quick shift" mod that was done by Alex Jupe (see www.alexjupemotorsport.co.uk). The stick is shortened and the pivot point adjusted to reduce the throw. Much nicer than the usual set-up. :D
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Post by MD »

Bill

I have no doubt that you can reduce the length of the gear selection with this combination but the gate is still too wide due to the length of the crank on the selector shaft. It is not possible to change this due to restrictions of the floor pan unless you do what I did and go through the floor.

There is also another system suitable for road or race if you can get a hold of it. It is British but I dont know where to source it from. It's called X-Trac.

The photo shows a front wheel drive setup but it will equally work in the opposite direction.
Attachments
Xtrac passenger side view3.jpg
Xtrac passenger side view3.jpg (72.66 KiB) Viewed 19540 times
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SydneyJules
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Post by SydneyJules »

Hey Matt....

Mike did suggest lining them up and going for it... as usual I said yes!

But I got there a little later than I had anticipated (always the way....)

We did a little bit of freeway driving, but the stretch of Pacific Hwy we were on is not one you would flog it on... the cops are always waiting for a chance like that!

So let's just say that it is TBC... Mike is hopefully gonna stop in @ Coffs on his way back from Ballarat....

Yeah he's gonna drive that thing on a 4000km round trip!
Fixing it bit by bit....
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Post by matt »

excellent keep us posted, 4000km trip :shock: MD prob won't have a drivers licence after that trip! :D Hope he's got a radar dectector and/or special number plate paint......

.............going to need it passing through NSW !
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Post by matt »

Hey Mezevenf glad to hear MD knows what a 75 boot looks like now :lol:
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Post by Mats »

MD wrote:Bill

I have no doubt that you can reduce the length of the gear selection with this combination but the gate is still too wide due to the length of the crank on the selector shaft. It is not possible to change this due to restrictions of the floor pan unless you do what I did and go through the floor.

There is also another system suitable for road or race if you can get a hold of it. It is British but I dont know where to source it from. It's called X-Trac.

The photo shows a front wheel drive setup but it will equally work in the opposite direction.
That would be X-Trac as in the racing gearbox manufacturer.
Mats Strandberg
-Scuderia Rosso- Now burned to the ground...
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Post by MD »

Had a Radar detector and I got busted. It's now living in some police station toilet bowl..
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Short Shifter

Post by MD »

Part One

Recently the wife's Sportiva decided to mangle yet another doughnut so the driveshaft had to come out. At this time I decided to improve the shifter on it while it was out anyway.

The photos in various parts show this:-

1 An 30mm extension to the selector at the bottom
2 A relocation of the pivot tube to the transverse bar
3 A relocation of the captive connection from the transverse bar to the base of the selector.
4 The forming of a new flat section on the transverse bar to maintain clearance around the crossmember due to the selector extension.
5 A new coupling location for maintenance and dissassembly purposes.
6 A new connection point on the crank .

The purpose of these changes is to reduce the radius length ot the crank and increase the radius of the selector. The two together produce a shift that is shorter with a smaller gate.

The beauty of this arrangement is that it maintains the location of the components within the tunnel areas as before without the need to do the extensive modification of my "topside" modification.

This modification does not produce the same "stick-in-the-box" feel of the "topside" conversion but simply retains the typical transaxle shift feel with about a 35 % shorter movement overall.

NB
1 You will need to remove as much as possible from the inside edges of the plastic retainer that retains the spring under the ball as the added length of the selector will foul it and will inhibit full engagement of some gears notably 2nd.
2 Take care when welding the pivot tube not to cause heat distortion by short weld & cool cycles.
Attachments
017New crank in position.JPG
017New crank in position.JPG (112.81 KiB) Viewed 18888 times
016New crank fixing point.JPG
016New crank fixing point.JPG (128.99 KiB) Viewed 18890 times
013Cut crank.JPG
013Cut crank.JPG (118.83 KiB) Viewed 18894 times
010Position of coupling.JPG
010Position of coupling.JPG (116.08 KiB) Viewed 18888 times
007Extended selector coupling.JPG
007Extended selector coupling.JPG (118.86 KiB) Viewed 18891 times
Last edited by MD on Mon Jun 19, 2006 3:55 pm, edited 1 time in total.
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