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Old 05-15-2010, 05:01 PM   #1
WuNgUnSVT
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HOW TO: WuNgUn's $0 Getrag shifter slop removal mod! Part I

Some of you may know, I'm doing a clutch/flywheel install to the SVT...
With the tranny out, I decided to figure out how to tighten up my shifter action. With my mileage, there is noticeable side-to-side play at the shift knob...even with my Tri-Ax. (Forward and backward action is reasonably tight, albeit spongy...this will be covered in part II of the HOW TO).

You should be able to do this mod without any problems with the tranny still in the car...but it won't be really easy. You'll need to pull the intake/MAF and likely the battery too. You likely won't need to pull the shifter cables though, so that's one less thing to worry about.

Here is the Getrag shift linkage...



On the linkage actuators on the transmission, there are two distinct actions...in and out (shift knob left/right), and back and forth (shift knob forward/back). To translate the side-to-side shift action into in-and-out, there is a 90 degree pivot.



If you look at the above picture, you'll see a black square Nylon 'slider', that runs back and forth in the groove and is used to push the linkage in and out. Every time you move your shifter side-to-side, this piece wears inside the groove.

If you remove the top two bolts on the linkage boss, you can remove the in-out pivot...



If you take a look at the black nylon slider, you'll likely see wear on the fore/aft sides...





Lets see how far it's worn...
Worn sides...



The untouched sides...



It doesn't seem like a whole lot, but trust me...almost 4/10ths of a millimeter HERE, translates to a whole lot more once this play goes thru the pivot and thru to the top of the shift knob!!

The beauty thing about this black nylon slider, is it's originally designed perfectly square...which means (and here is the best part!), you turn the nylon piece 90 degrees...



...and mount it back in place. Your done!! (Well, bolt it back to the tranny...)

This no-cost mod EASILY took out 80 or 90% of the play that was there...
Not bad for $0, huh??

Upon closer inspection, the pivot pins on the linkage look sleeved...and there IS some play (and corrosion) in the pins...which accounts for the remaining 20 or 10% of play...

In my future HOW TO's on this project, I plan on drilling out the pins, ream the linkage, re-sleeve them with custom bronze bushings (maybe bolt them back together instead of pressing them in?) and eliminate 100% of the play. I might even use bearings at all the critical pivots.

Another issue that must be rectified, is the forward/back linkage at the tranny...it uses a huge rubber grommet, which accounts for the sponginess at the knob (it, however, doesn't have any pivot points/sleeves to wear out...it's attached directly to the mechanism).
The cable end that connects to THIS pivot, on my '02 SVT, uses no rubber grommets, so this mod alone, should fix the 'feel' totally.



I plan on making a bronze bushing/sleeve for this, which should be relatively straight forward...and this mod should make the shift action much, MUCH better!

Whatever mod's I do, I plan on making enough parts to make a bunch of 'kits' for the rest of you to do this as well...

Another cheap and easy upgrade for this would be a rectangular (instead of square) slider bushing, and made from a harder material, like bronze. Or alternatively, machine the slider groove wider, and instead of a bronze or plastic slider, use a small roller bearing instead, to eliminate all play and decrease friction...

I'll keep this thread updated!

P.S. I dunno how the linkage on the MTX is, but I imagine, in principal, they work the same...so this mod might also relate to that transmission.


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Old 05-15-2010, 07:54 PM   #2
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Hmmm...or maybe I'll just make the parts for myself...?
lol
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Old 05-15-2010, 08:42 PM   #3
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so whats the point the mod? just asking.
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Old 05-15-2010, 08:44 PM   #4
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To tighten up the shift lever...take out any play and slop and make it feel like new again.
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Old 05-15-2010, 08:50 PM   #5
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^^You'll have forgive Chucky. He has an auto lol


I'm curious about this on my MTX. I'll have to check it out when I replace my clutch & flywheel. I also have what you would call slop. It's the slight movement side to side when in gear. It used to be a lot worse till I got the FC race shifter.
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Old 05-15-2010, 08:55 PM   #6
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Yeah, the short throw shifter will reduce the sloppy feeling too...but it's not a root-cause fix.
If your slop is side-to-side, I'll bet your mechanism is like the Getrags....
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Old 05-15-2010, 09:12 PM   #7
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^I'm thinking it is also.. Pretty much what you described is the way it feels.
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Old 05-15-2010, 09:29 PM   #8
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I'm trying to remember...the shifter side of the cables...is there a big rubber grommet on those as well, or just the engine side?
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Old 05-15-2010, 11:55 PM   #9
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Quote:
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I'm trying to remember...the shifter side of the cables...is there a big rubber grommet on those as well, or just the engine side?
I want to say it was plastic but I'm not sure .

I was thinking sometimes I go to shift and it's like it hit a wall. This is probably what is binding my shift cables. I think. That's how it feels anyways. It doesn't grind just stops when shifting fast..sometimes. I also have 160k mi on my car but the tranny (used of course), shift cables, and shift tower (broke it of course) are all new-ish (less than a year old). I should probably re adjust my shift cables on the tranny again and while i'm down there I should check out the mod you did and see if it's the same on our (which I think it is) .
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Old 05-15-2010, 10:56 PM   #10
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Dang, I wish I would had read this just 3 days ago. I had everything all removed to do my clutch master cylinder, I could have done this real quick. Maybe I’ll tackle it tomorrow.
Thanks for the how to!
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