home register FAQ memberlist calendar

Go Back   Turbobricks Forums > Mechanical > maintenance & nonperformance

Reply
 
Thread Tools Display Modes
Old 05-14-2018, 07:30 PM   #1
SenseiRice
Board Member
 
Join Date: Aug 2016
Location: Southern NH
Default M47 pops out of 3rd gear when decelerating

So a few weeks ago I dropped a rebuilt 93 squirter motor and an 88 m47 into my car. I put a new bellhousing gasket and rear cover gasket+seal in the m47. I also put 2 qts of wolfshead synthetic universal atf in it. I also welded an extra 1/2in or so of lenght under the shifter ball to give myself a bit of a short shifter. Been about 500-600 miles since the swap and just earlier it decided to pop out of 3rd gear while I was decelerating. I put it back in 3rd then coasted for a bit and again it popped out. Seems to be random how long it stays in 3rd gear before it pops out and it hasn't popped out of 3rd gear while accelerating, only when my foot is off the gas. The transmission had 150k miles when I got it from a friend of mine and it shifts through all the gears smoothly with no grinding. My thoughts are the fluid I used but I'm not sure. Any ideas why it doesn't stay in 3rd while decelerating, pretty annoying when I'm engine braking on hills.
__________________
Just a single man with a single overhead cam.
SenseiRice is offline   Reply With Quote
Old 05-14-2018, 08:11 PM   #2
VB242
Sexual healer
 
VB242's Avatar
 
Join Date: Sep 2011
Location: Virginia Beach
Default

Is the rubber boot pushing it out of gear?
__________________
1980 primer JDM flares franken-242DL, 1989 silver 780 sienna rear spring nivomat delete
VB242 is online now   Reply With Quote
Old 05-14-2018, 10:24 PM   #3
SenseiRice
Board Member
 
Join Date: Aug 2016
Location: Southern NH
Default

I do not believe so
SenseiRice is offline   Reply With Quote
Old 05-14-2018, 10:59 PM   #4
hiperfauto
Board Member
 
hiperfauto's Avatar
 
Join Date: Nov 2011
Location: So Cal
Default

Make sure you didn't extend the shifter so far that it's hitting the overdrive housing and preventing you from shifting all the way into 3rd.
hiperfauto is offline   Reply With Quote
Old 05-14-2018, 11:00 PM   #5
EivlEvo
Board Member
 
Join Date: Sep 2012
Default

Are you certain it's nothing externally like that boot and/or the sponge?
EivlEvo is offline   Reply With Quote
Old 05-15-2018, 07:20 AM   #6
SenseiRice
Board Member
 
Join Date: Aug 2016
Location: Southern NH
Default

Just moved the boot up the shifter to see what would happen and hasn't popped out of third gear since.
SenseiRice is offline   Reply With Quote
Old 05-15-2018, 09:35 AM   #7
EivlEvo
Board Member
 
Join Date: Sep 2012
Default

Myth busted?
EivlEvo is offline   Reply With Quote
Old 05-15-2018, 12:43 PM   #8
SenseiRice
Board Member
 
Join Date: Aug 2016
Location: Southern NH
Default

I think so, I just need to find a way to keep the shiftboot in place
SenseiRice is offline   Reply With Quote
Old 05-15-2018, 01:15 PM   #9
SenseiRice
Board Member
 
Join Date: Aug 2016
Location: Southern NH
Default

Spoke too soon, it's still popping out
SenseiRice is offline   Reply With Quote
Old 05-15-2018, 08:42 PM   #10
Acid8000
Board Member
 
Acid8000's Avatar
 
Join Date: May 2005
Location: Victoria, BC - Canada
Default

This happened to me. Turned out to be a dead tranny mount . Wasn't allowing the shifter to go fully into gear
__________________

Daily Driver: '83 242Ti w/ B21FTi and M46. IPD Sways, Bilstein HD Struts, Lowering Coils. Mistu 13c @ 10psi - Her name is Domino.
Hi my name is Jason, i'm addicted to boost
Acid8000 is offline   Reply With Quote
Old 05-16-2018, 08:42 AM   #11
240240
I crush everything!
 
240240's Avatar
 
Join Date: Mar 2013
Location: Southern California Über Alles
Default

Time for bronze shifter bushings and new mounts.

Ive used a dead motor mount in place of stock mount for sloppy m46. Its about 1/2" thicker than stock trans mount. Muscle it in there and your shifter will sit just a bit higher and everything is slightly tighter perfect mod for the brokeass turbobricker.

This is for a 240. If you're driving a 7/9 crush your car
__________________
Quote:
Originally Posted by 240240 View Post
Any thread about cut springs, & or +T on a college students budget shall be sent to OT, flogged for 24 hours, participants in said thread shall point the OP in the correct thread link while simultaneously shaming them
2018-07-12_12-44-09 by t s, on Flickr
240240 is offline   Reply With Quote
Old 05-16-2018, 12:13 PM   #12
SenseiRice
Board Member
 
Join Date: Aug 2016
Location: Southern NH
Default

I did just put a brand new mount in it, it is a duralast part though.
SenseiRice is offline   Reply With Quote
Old 05-16-2018, 08:10 PM   #13
dl242gt
Can play the blues
 
dl242gt's Avatar
 
Join Date: Jun 2002
Location: S NJ, a suburb of Phila.
Default

I would suggest a different lube in there.
__________________
Dave,
1982 242 turbo. 340k miles. Good stuff and lots of rust.
1993 245 Classic, 417k miles, enem V15. IPD bars and chassis braces. Simons sport exhaust from Scandix. sbabbs ezk chip. Been a good road warrior. Genuine Volvo rebuilt leaky M47.
dl242gt is offline   Reply With Quote
Old 05-17-2018, 02:33 PM   #14
freevolvos
Board Member
 
Join Date: Jan 2011
Location: hillpoint
Default

worn shift collar and probably the 3rd speed gear engagement teeth, hub keys, maybe or even a failed pilot bearing , although that's usually affects fourth gear ,possibly the shifter as well
freevolvos is offline   Reply With Quote
Old 05-18-2018, 04:18 PM   #15
SenseiRice
Board Member
 
Join Date: Aug 2016
Location: Southern NH
Default

Is there a more definitive way to test if it's the transmission itself? It only has 150k miles on it. I'm really hoping it's not that because the old m47 my car had was total junk so I scrapped it.
SenseiRice is offline   Reply With Quote
Old 05-18-2018, 07:09 PM   #16
petiww
Board Member
 
petiww's Avatar
 
Join Date: Aug 2011
Location: Hungary
Default

Try a stock shifter lever in it first. Maybe its only that, who knows.
__________________
1980 Brown 244 GL

Last edited by petiww; 05-18-2018 at 07:27 PM..
petiww is offline   Reply With Quote
Old 05-20-2018, 09:50 AM   #17
SenseiRice
Board Member
 
Join Date: Aug 2016
Location: Southern NH
Default

I already donated the old transmission (with shifter) to my highschool because the auto program wanted a manual transmission to cut apart and use as a demonstration piece.

Last edited by SenseiRice; 05-20-2018 at 09:55 AM..
SenseiRice is offline   Reply With Quote
Old 05-20-2018, 11:46 AM   #18
EivlEvo
Board Member
 
Join Date: Sep 2012
Default

What parts do you need? I have an M47 lying around here...
EivlEvo is offline   Reply With Quote
Old 05-21-2018, 01:40 AM   #19
JohnLane
Board Member
 
Join Date: Nov 2002
Location: Northern Washington
Default

M-47 uses needle bearings between the gear and mainshaft doesn't it?

The old ones with bushings between gear and mainshaft would pop out on decel when the bushing got worn.
__________________
Overkill is consistently more fun.
JohnLane is offline   Reply With Quote
Old 05-21-2018, 06:03 PM   #20
SenseiRice
Board Member
 
Join Date: Aug 2016
Location: Southern NH
Default

Quote:
Originally Posted by JohnLane View Post
M-47 uses needle bearings between the gear and mainshaft doesn't it?

The old ones with bushings between gear and mainshaft would pop out on decel when the bushing got worn.
It's out of an 88 so I think it's an m47II
SenseiRice is offline   Reply With Quote
Old 05-21-2018, 06:04 PM   #21
SenseiRice
Board Member
 
Join Date: Aug 2016
Location: Southern NH
Default

Quote:
Originally Posted by EivlEvo View Post
What parts do you need? I have an M47 lying around here...
Sounds like I may be looking for a whole m47 lol
SenseiRice is offline   Reply With Quote
Old 05-22-2018, 10:57 PM   #22
JohnLane
Board Member
 
Join Date: Nov 2002
Location: Northern Washington
Default

Quote:
Originally Posted by SenseiRice View Post
Sounds like I may be looking for a whole T-5 lol
Fixed that for ya.
JohnLane is offline   Reply With Quote
Old 05-23-2018, 06:47 PM   #23
SenseiRice
Board Member
 
Join Date: Aug 2016
Location: Southern NH
Default

Quote:
Originally Posted by JohnLane View Post
Fixed that for ya.
Hell I'd love too lol, but does an NA redblock with a cam really warrant a t5.
SenseiRice is offline   Reply With Quote
Old 05-23-2018, 06:48 PM   #24
SenseiRice
Board Member
 
Join Date: Aug 2016
Location: Southern NH
Default

Don't know if this adds any insight to the problem but when I go back into 3rd after it pops out it grinds but doesn't grind any other time. Also I notice a pulsating vibration in only 3rd and 5th gear.
SenseiRice is offline   Reply With Quote
Old 05-23-2018, 06:53 PM   #25
EivlEvo
Board Member
 
Join Date: Sep 2012
Default

I have an M47 off of my old car if you're after one. (Don't recall if I mentioned) it ran great, shifted smooth etc. It is however missing the bell housing and the shifter is removed. Thus... it would be useful to someone like yourself, but not to someone looking to convert to manual.

Shipping seems complex, but... I'm not opposed to attempting (I'm in NC)
EivlEvo is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -4. The time now is 04:51 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.