Why won’t our MR2’s shifter properly shift?

Sponsored by
J.G.
Update by J.G. Pasterjak to the Toyota MR2 Turbo project car
Dec 20, 2023 | Toyota, MR2

With our engine, transaxle, oil system and even exhaust installed in our soon-to-be-V6-powered 1991 Toyota MR2, we’re down to small details and reconnecting previous bits where they need to go.

Unfortunately, since we had a little fire in that very same engine bay, the work isn’t turning out to be as easy as plugging and playing. We’re still finding the …

This content is available for GRM+ members and Grassroots Motorsports magazine subscribers only.

You can read it for free in 56 days or subscribe to GRM+ to read right now.

Subscribe now

Already a member?

Login to read

Join Free Join our community to easily find more project updates.
More like this
Comments
zordak
zordak HalfDork
12/20/23 10:06 a.m.

You might want to try brass.

cdnmr2v6
cdnmr2v6 None
12/20/23 3:02 p.m.

RacerX makes those bushings of you haven't come up with a solution yet.

 

https://racerxfabrication.com/mr2-celica/transmission/e153-linkage-bushing

GameboyRMH
GameboyRMH GRM+ Memberand MegaDork
12/20/23 5:06 p.m.

Seems like Delrin would work well there.

tgschmid
tgschmid New Reader
12/20/23 6:46 p.m.

It would be nice know what the bushing was made of originally. Y'all have some clout and maybe a shout out to Toyota from yuz guys might actually get an answer. Original parts from our 90's Toyota rides are disappearing from the factory 'catalog' at an alarming rate. Some other manufacturers (Toyota included)  might want to pull a page out of Porsche's and Mercedes' playbook and maintain select parts for older performance vehicles that are still loved and maintained by their keepers AND can be sold for top dollar to said proverbial keepers of the flame. It's not a typical practice for high volume manufacturers, but it seems to generate a bunch of coin for the Stuttgart based folks.

David S. Wallens
David S. Wallens Editorial Director
12/20/23 7:05 p.m.

In reply to tgschmid :

Sorta related, I’m about to drop the 911’s engine for some work. While it’s out, my mechanic said we should replace the bell crank bushings–along with some other “while we’re in there” things. I had several options to order from including, IIRC, factory Porsche. 

te72
te72 HalfDork
12/20/23 9:43 p.m.

In reply to tgschmid :

There is a Toyota Heritage program that has made available select items for the 2000GT, and a few Supra bits. I think some AE86 parts may have been done as well. Unfortunately, the parts that have been made available... I'm really not sure who is asking for them. It's starting to become a joke.

JG Pasterjak
JG Pasterjak Production/Art Director
12/20/23 9:44 p.m.
GameboyRMH said:

Seems like Delrin would work well there.

There's no such thing as "too light." There's "tires too skinny," "not enough downforce" and "underdamped."

Yeah that's what I ended up using.

Surprise teaser for the next update: we figured out the issue. It was tertiarily related to the linkage, but more related to be being dumb.

cmcmillin31
cmcmillin31 GRM+ Memberand Reader
12/21/23 7:58 a.m.

I'm currently trying to get my 2GR MR2 shifter sorted out, so I'm following your progress.  Mine has an E153 and shifts, but you can't shift quickly and the feel is terrible.  I'm doing the adjustable shift cables from MR2 heaven first, along with the shifter fork bushing and shifter base bushings.  Hopefully that sorts it out, but if it doesn't this will probably be the next place I look.  

Mr_Asa
Mr_Asa GRM+ Memberand UltimaDork
12/21/23 8:17 a.m.
zordak said:

You might want to try brass.

I've actually had pretty good luck with sizing brass from spent shells after I've gone shooting.

RonB001
RonB001 GRM+ Memberand New Reader
12/21/23 1:39 p.m.

Could it be geometry rather than material?

If the two parts twist relative to each other through the range of motion, having the center hole rounded rather than cylindrical {  )(  instead of ||  } might free up the angular motion without making it sloppy.

You'll need to log in to post.

Sponsored by

GRM Ad Dept

Our Preferred Partners
Vc6KJ333KJaMeRaw4v3nQdv4CIEDGyPEIuXJSFSmFZfSjluhlPpm6ZfH9D91hgpW