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LM 4 Speed Shifter Rod bent!!!
Posted by: gnrand ()
Date: December 24, 2017 05:34PM

First Merry Christmas.
I was pulling the engine and transmission today and it caught the coupler and bent the shifter rod about 30 degrees. I was wondering if it can be straightened in place. I was thinking of applying heat and inserting a rod about the same diameter as the coupler.
Jeff

Wildomar,Ca

1965 Corsa Hard Top
!965 Corsa Convertible
1968 Monza 140 Convertible 4 speed
1966 435 HP Crown
1986 Buick GN



Edited 2 time(s). Last edit at 12/24/2017 10:22PM by MattNall.

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Re: LM 4 Speed Shifer Rod
Posted by: steve c goodman ()
Date: December 24, 2017 05:48PM

Jeff I would remove shifter from under car and get it into a vise to hold it. Take care heating the tube because sometimes the shift tube bushings are nylon. It needs to be pretty straight when you get it done. There is minimal clearance between the inner tube and the bushing. Hope you manage ok.

My best advice is get another tube.

best wishes, Steve
Rear Engine Spec. Inc. Golden, Colo.

1962 spyder 3.0L turbo---1965 Crown V8
1967 monza 110/4---1968 monza 110/4
1971 amante gt 110/4
CORSA/RMC/PPCC



Edited 1 time(s). Last edit at 12/24/2017 05:49PM by steve c goodman.

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Re: LM 4 Speed Shifer Rod
Posted by: MattNall ()
Date: December 24, 2017 05:48PM

Bummer!! sadly very unlikely..





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Re: LM 4 Speed Shifer Rod
Posted by: gnrand ()
Date: December 24, 2017 06:32PM

steve c goodman Wrote:
-------------------------------------------------------
> Jeff I would remove shifter from under car and get
> it into a vise to hold it. Take care heating the
> tube because sometimes the shift tube bushings are
> nylon. It needs to be pretty straight when you
> get it done. There is minimal clearance between
> the inner tube and the bushing. Hope you manage
> ok.
>
> My best advice is get another tube.

Thanks Steve. I was trying not to remove it but that would the best way to get it straight.
Jeff

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Re: LM 4 Speed Shifer Rod
Posted by: steve c goodman ()
Date: December 24, 2017 07:04PM

The tube must be pretty darn straight. It has to move smoothly and without any side play. Good luck with it.

best wishes, Steve
Rear Engine Spec. Inc. Golden, Colo.

1962 spyder 3.0L turbo---1965 Crown V8
1967 monza 110/4---1968 monza 110/4
1971 amante gt 110/4
CORSA/RMC/PPCC

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Re: LM 4 Speed Shifer Rod
Posted by: 66vairman ()
Date: December 24, 2017 07:56PM

If your bushing are worn I'd suggest taking the assembly out of the car and dismantling it for a rebuild.

If the inner tube is that bent, the outer tube may also be bent.

Just my limited experience, but ALL my inner tubes were bent or out or round. One outer tube was bent at the bracket that bolts to the shifter housing. With some skill, a vise, and patience you can get everything lined up and working smoothly.

Note the 66 style at the rear had an adjustable support to line up the tube with the transmission shaft. The 65 unit is fixed. Folks use different approaches to align things.

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Re: LM 4 Speed Shifer Rod
Posted by: gnrand ()
Date: December 24, 2017 08:58PM

66vairman Wrote:
-------------------------------------------------------
> If your bushing are worn I'd suggest taking the
> assembly out of the car and dismantling it for a
> rebuild.
>
> If the inner tube is that bent, the outer tube may
> also be bent.
>
> Just my limited experience, but ALL my inner tubes
> were bent or out or round. One outer tube was bent
> at the bracket that bolts to the shifter housing.
> With some skill, a vise, and patience you can get
> everything lined up and working smoothly.
>
> Note the 66 style at the rear had an adjustable
> support to line up the tube with the transmission
> shaft. The 65 unit is fixed. Folks use different
> approaches to align things.

Never realized there was a difference between the 65 and 66. One of my 65's has a 66 trans.

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Re: LM 4 Speed Shifter Rod bent!!!
Posted by: v8vair ()
Date: December 25, 2017 05:28AM

Clarks has good used ones.
[www.corvair.com]

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Re: LM 4 Speed Shifter Rod bent!!!
Posted by: 1STLM ()
Date: December 25, 2017 06:33AM

Clarks mentioned remaning the inner rod a while ago. I checked about 3 months ago and they still hadn't. Finding a used one that is straight and rust free, not pitted at the bushing area, may be a challenge. Just in case you were considering replacing it...

Brice

66 Corsa Turbo Convertible

Bozeman, Montana

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Re: LM 4 Speed Shifter Rod bent!!!
Posted by: gnrand ()
Date: December 25, 2017 07:02AM

I will try to pull it out this morning if I can break away. I think Jeff at California Corvairs has used ones. He usually lets me in the shop to pick out a good one. I am hoping to do the repair on mine.
Jeff

Wildomar,Ca

1965 Corsa Hard Top
!965 Corsa Convertible
1968 Monza 140 Convertible 4 speed
1966 435 HP Crown
1986 Buick GN

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Re: LM 4 Speed Shifter Rod bent!!!
Posted by: Allan Lacki ()
Date: December 25, 2017 09:02AM

The Long-Winded MacGyver Solution to Bent Inner Shift Tubes. grinning smiley

I’m presenting this mainly for giggles, but if you’re really having trouble finding a straight inner shift tube, then this might be for you!

You may recall that the front end of the inner shift tube has a cup arrangement that engages the ball on the end of the shift lever. Between 1960 and 1965, the cup was an iron casting that was welded or brazed onto the rod. But the cup was a fabricated mild steel piece on later Corvairs, from 1966 to 1969.

The fabricated cup is the one to use. It has two sockets, one on each end. One socket is occupied by the existing tube. The other socket is empty. So, why not chop off the old tube from the one socket and weld the new tube to the empty socket? Then, slit the other end of the new tube just like the original factory tube so that the inner shift tube coupler can be clamped into it?

Rather than just think about it, I proceeded to make a stainless steel inner shift tube for my own Corvair. I ordered a .75" (OD) x .620" (ID) x 58.25" piece of stainless steel tubing from Speedy Metals (online) and took it to a local welding shop to have it welded to the fabricated mild steel socket from the original inner shift tube. (I don’t know if the length of the inner shift tube is the same for all Corvairs, so measure the length of your own bent shift tube before you have them cut the metal for you).

Of course, you could use mild steel tubing instead of stainless.
Now, the shaft of the coupler at the transaxle end of the tube is .625” in diameter, so the inner diameter of my tube, (at .620” (ID) was a bit too small. I had to ream it out so that the shaft of the coupler could slide into the end of the tube the way it shold. To do it right, you really need a reamer. A .625” drill bit will get stuck in the tube when you attempt to drill it out!

Perhaps a better approach would be to order a .75" (OD) x .652" (ID) piece of tubing. I haven’t tried it, but I think it would work just fine. [www.speedymetals.com]

I notched the rear of the tube to create a tab to fit into the coupler that attaches to the transmission selector shaft. I also slit the rod at the rear so that the factory clamp can squeeze it onto the coupler. In other words, I made the rear of the shift rod look like the original factory rod.

Looking at a factory shift rod, you'll see that the tab that fits into the coupler is located at the exact "top" of the tubing from which the shift rod is made. When notching and bending the tab on the new rod, it's important to locate it exactly at the top of the tube, like the factory rod. Otherwise, your shifter won't work. On the other hand, the orientation of the slit for the clamp is not so important.

I’ve been using my stainless inner shift tube for a few years and it works just fine.

Shown below: (1) fabricated up with old shaft occupying one of the two sockets, (2) inner and outer tubes - inner tube is welded into the previously unoccupied end of the socket, (3) inner and out tubes - inner tube with an orange coupler.



Edited 2 time(s). Last edit at 12/25/2017 09:06AM by Allan Lacki.

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Re: LM 4 Speed Shifter Rod bent!!!
Posted by: 66vairman ()
Date: December 25, 2017 09:31AM

The 65 vs. 66 shift tubes are the same length (if I recall correctly). The head that fits the shifter rod can vary, but work the same.

The support link from the rear shifter tube bracket to the transmission support is different for 66-69 vs. 65. A search or look in the FAQ's will supply more information.

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Re: LM 4 Speed Shifter Rod bent!!!
Posted by: Reds kid ()
Date: December 25, 2017 10:33AM

I had the same problem about a year ago. I talked to Dave Motohead to help me out the trick was a ball peen hammer and my vice as a anvil. I takes a bit of time but it is doable. Replace your shifter bushings and use the outer tube as a gauge. What i noticed on mine was someone lowered the engine without disconecting the shifter first.

65 140 Corsa
Castaic CA

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Re: LM 4 Speed Shifter Rod bent!!!
Posted by: gnrand ()
Date: December 26, 2017 05:38AM

Allan Lacki Wrote:
-------------------------------------------------------
> The Long-Winded MacGyver Solution to Bent Inner
> Shift Tubes. grinning smiley
>
> I’m presenting this mainly for giggles, but if
> you’re really having trouble finding a straight
> inner shift tube, then this might be for you!
>
> You may recall that the front end of the inner
> shift tube has a cup arrangement that engages the
> ball on the end of the shift lever. Between 1960
> and 1965, the cup was an iron casting that was
> welded or brazed onto the rod. But the cup was a
> fabricated mild steel piece on later Corvairs,
> from 1966 to 1969.
>
> The fabricated cup is the one to use. It has two
> sockets, one on each end. One socket is occupied
> by the existing tube. The other socket is empty.
> So, why not chop off the old tube from the one
> socket and weld the new tube to the empty socket?
> Then, slit the other end of the new tube just like
> the original factory tube so that the inner shift
> tube coupler can be clamped into it?
>
> Rather than just think about it, I proceeded to
> make a stainless steel inner shift tube for my own
> Corvair. I ordered a .75" (OD) x .620" (ID) x
> 58.25" piece of stainless steel tubing from Speedy
> Metals (online) and took it to a local welding
> shop to have it welded to the fabricated mild
> steel socket from the original inner shift tube.
> (I don’t know if the length of the inner shift
> tube is the same for all Corvairs, so measure the
> length of your own bent shift tube before you have
> them cut the metal for you).
>
> Of course, you could use mild steel tubing instead
> of stainless.
> Now, the shaft of the coupler at the transaxle end
> of the tube is .625” in diameter, so the inner
> diameter of my tube, (at .620” (ID) was a bit
> too small. I had to ream it out so that the shaft
> of the coupler could slide into the end of the
> tube the way it shold. To do it right, you really
> need a reamer. A .625” drill bit will get stuck
> in the tube when you attempt to drill it out!
>
> Perhaps a better approach would be to order a .75"
> (OD) x .652" (ID) piece of tubing. I haven’t
> tried it, but I think it would work just fine.
> [www.speedymetals.com]
> ?thickness=0.75
>
> I notched the rear of the tube to create a tab to
> fit into the coupler that attaches to the
> transmission selector shaft. I also slit the rod
> at the rear so that the factory clamp can squeeze
> it onto the coupler. In other words, I made the
> rear of the shift rod look like the original
> factory rod.
>
> Looking at a factory shift rod, you'll see that
> the tab that fits into the coupler is located at
> the exact "top" of the tubing from which the shift
> rod is made. When notching and bending the tab on
> the new rod, it's important to locate it exactly
> at the top of the tube, like the factory rod.
> Otherwise, your shifter won't work. On the other
> hand, the orientation of the slit for the clamp is
> not so important.
>
> I’ve been using my stainless inner shift tube
> for a few years and it works just fine.
>
> Shown below: (1) fabricated up with old shaft
> occupying one of the two sockets, (2) inner and
> outer tubes - inner tube is welded into the
> previously unoccupied end of the socket, (3)
> inner and out tubes - inner tube with an orange
> coupler.
Thank you for taking the time to write this up. I will keep it in mind if my search does not come up with a usable replacement.
Jeff

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Re: LM 4 Speed Shifter Rod bent!!!
Posted by: BobV66Vair ()
Date: December 26, 2017 10:36AM

Hmmmm. I pulled the entire shift mech out of my 68 parts car to use in my 66. It is cast iron/steel welded to the inner shaft. It took some work to get it to slide smoothly into the outer shaft (new brass bushings) but some sanding with 80 grit took out the rough spots and it made it through cleanly. FYI the inner shaft was quite rusty and pitted/built-up.

I am wondering about the mention that the cast coupler was only on early cars? Was my 68 swapped with an early shaft at some point before I got it? It looks fine but not installed yet. using the 68 4-speed out of the same parts car.

Bob Vinnacombe
Sandy, Oregon
1965 Corsa 140 stock
1966 Monza Soon to be race car
1968 Monza Parts for now

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Re: LM 4 Speed Shifter Rod bent!!!
Posted by: Allan Lacki ()
Date: December 26, 2017 11:41AM

Hi BobV66Vair,

According to the Clark's Corvair Parts catalog, '65s had the cast iron end whereas '66-'69s had the fabricated end. So, maybe the shift tube on your '68 was replaced at some point in the past. No big deal really - they're interchangeable.

Here's a link to the Clark's catalog page:

[www.corvair.com]

By the way, none of this applies to '60-'64 Corvairs or any of the FC Corvairs.



Edited 1 time(s). Last edit at 12/26/2017 11:42AM by Allan Lacki.

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Re: LM 4 Speed Shifter Rod bent!!!
Posted by: Seth Emerson ()
Date: December 26, 2017 08:12PM

Jeff - If Wildomar wasn't so far away from San Jose, I would suggest you drop by and pick one up. I have several and will not be using them all. I can't think of a decent way to ship one either. It would probably end up more bent than the one you have now! It is yours if you want it. Next time, do this right before the fan belt toss!

Seth Emerson

Check my new Performance Corvair Web site [www.perfvair.com]

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Re: LM 4 Speed Shifter Rod bent!!!
Posted by: Lane66m ()
Date: December 26, 2017 08:36PM

Could be shipped in a thick wall PVC tube with packing material to hold it in place and caps glued on. Of course, it is FedEx or UPS only.

Al Lane
Ellabell GA

1966 Monza Coupe, 110 hp, 4 Spd
1968 Camaro SS Coupe 350 CI 295+ HP PG
1964 Greenbrier Deluxe, 6 dr, 80 hp car engine, PG
2015 Chevrolet Malibu 2LT
2018 Chevrolet Silverado LTZ Z71 Centennial Edition
1947 Farmall A tractor 15 hp


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Re: LM 4 Speed Shifter Rod bent!!!
Posted by: gnrand ()
Date: December 27, 2017 03:45PM

Lane66m Wrote:
-------------------------------------------------------
> Could be shipped in a thick wall PVC tube with
> packing material to hold it in place and caps
> glued on. Of course, it is FedEx or UPS only.

Found a good one locally.
Jeff

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