Transmission mount upper bushes- a solution!

Does your Mitsubishi L300 make a strange noise? Need wheel alignment specs?
User avatar
Growlerbearnz
Posts: 1703
Joined: Sat Jun 26, 2010 1:58 pm
Member's Photo Album: http://www.delica.ca/Photos/
Vehicle: Delica P25W
Location: New Zealand

Transmission mount upper bushes- a solution!

Postby Growlerbearnz » Wed Oct 04, 2017 3:39 pm

Eureka!

After trawling far too many Google-translated Russian message boards, I've found a bush that fits in the upper transmission mount brackets (usually only available from Mitsubishi if you buy the entire upper mount assembly. For about $400. Ouch.)

Nissan Micra/March/Tiida/Cube/Versa/ front suspension lower arm rear bushes. $16 each. Febest part number NAB-134.

Tiida.JPG
Tiida.JPG (71.54 KiB) Viewed 836 times
comparison.JPG
comparison.JPG (49.32 KiB) Viewed 836 times


The tube in the middle is about 6mm too long. To prevent burning the rubber I drilled 3mm out of each end, then finished with a file. It's alloy, so easy to work.

shortening.JPG
shortening.JPG (49.55 KiB) Viewed 836 times
Shorter.JPG
Shorter.JPG (57.51 KiB) Viewed 836 times


The bush's outer diameter is about 1mm larger than the mount, but it's a press fit so merely cleaning up the mating surfaces was enough. Flap wheel in a drill for the bracket, angle grinder flap wheel and the redneck lathe for the bush. Again, being careful not to get the bush too hot.

Diameter.JPG
Diameter.JPG (49.66 KiB) Viewed 836 times
Internal.JPG
Internal.JPG (51.6 KiB) Viewed 836 times
FlapWheel.JPG
FlapWheel.JPG (57.09 KiB) Viewed 836 times
Rednecklathe.JPG
Rednecklathe.JPG (45.86 KiB) Viewed 836 times


Install bush with a press (aka sledgehammer and a chunk of exhaust pipe as a mandrel) and it's as good as new.

Before and after shots:
Saggy.JPG
Saggy.JPG (40.66 KiB) Viewed 836 times
installed.JPG
installed.JPG (67.45 KiB) Viewed 836 times
Installed2.JPG
Installed2.JPG (51.07 KiB) Viewed 836 times


The bushes are stiffer than the old (failing, worn-out) bushes, but I haven't noticed any extra vibration or noise. I'm declaring it a success.
Nothing says "poor workmanship" more than wrinkles in the duct tape.

User avatar
ChuckBlack
Posts: 318
Joined: Tue Mar 17, 2015 9:27 pm
Member's Photo Album: http://www.delica.ca/Photos/Bingo
Vehicle: Delica L300 Jasper
Location: St. Albert AB

Transmission mount upper bushes- a solution!

Postby ChuckBlack » Wed Oct 04, 2017 10:51 pm

Nice go... Did you fit all the tranny bushing too? Where did you buy the bushing at?
La vie est Delicate! :-D

User avatar
Growlerbearnz
Posts: 1703
Joined: Sat Jun 26, 2010 1:58 pm
Member's Photo Album: http://www.delica.ca/Photos/
Vehicle: Delica P25W
Location: New Zealand

Transmission mount upper bushes- a solution!

Postby Growlerbearnz » Thu Oct 05, 2017 12:43 am

I have the other bushes coming from Japan, along with new engine mounts.
I bought these bushes from a local place, but it looks like there are plenty on eBay if you search for "Nissan versa front arm bush".
Nothing says "poor workmanship" more than wrinkles in the duct tape.

jejoenje
Posts: 2
Joined: Thu Sep 15, 2016 3:02 pm
Member's Photo Album: http://www.delica.ca/Photos/
Vehicle: L300
Location: Dunblane UK

Transmission mount upper bushes- a solution!

Postby jejoenje » Sun Nov 12, 2017 2:17 pm

Very interesting, growlerbearnz!
I will sure keep this saved as a "useful part reference for future use!

Out of interest, we're you getting any symptoms causing you to investigate the bushes? Or did you just notice they looked worn?
I've had an intermittent strange noise while driving that I've wondered might be transmission bushes...

User avatar
north54
Posts: 157
Joined: Tue Oct 01, 2013 10:29 pm
Member's Photo Album: http://www.delica.ca/Photos/
Vehicle: 1989 P35W
Location: Vancouver

Transmission mount upper bushes- a solution!

Postby north54 » Sun Nov 12, 2017 6:00 pm

Very cool! I assume it was this site I was perusing as well. https://www.drive2.ru/l/6328517/

Looks like you could replace all your transmission mounts this way? But I read your ordering the rest from Japan.
TRUSTY RUSTY

User avatar
Growlerbearnz
Posts: 1703
Joined: Sat Jun 26, 2010 1:58 pm
Member's Photo Album: http://www.delica.ca/Photos/
Vehicle: Delica P25W
Location: New Zealand

Transmission mount upper bushes- a solution!

Postby Growlerbearnz » Sun Nov 12, 2017 6:14 pm

jejoenje wrote:Out of interest, we're you getting any symptoms causing you to investigate the bushes?


Mainly they just looked worn and saggy, with some cracks in the rubber. But since replacing them (along with the engine mounts and main transmission mounts), I've noticed there's no more slight shudder on takeoff.

north54 wrote:Very cool! I assume it was this site I was perusing as well. https://www.drive2.ru/l/6328517/

Looks like you could replace all your transmission mounts this way? But I read your ordering the rest from Japan.


LOL! Yep, that's the site, though it was a different thread where the Nissan bushes were mentioned. I guess you could replace all the bushes by swapping out the rubber liners, but the Mitsubishi ones aren't all that expensive. It's just those damned upper bushes where you have to buy the entire crossmember...
Nothing says "poor workmanship" more than wrinkles in the duct tape.


Return to “L300 Technical”

Who is online

Users browsing this forum: No registered users and 3 guests