Hello everyone,
I've been having a lot of weird things going on with my 4-speed conversion into a 1971 fj40. Everything worked fine for the first 100 miles. The issue began when I try to shift from 3rd into 4th gear. It's an early style h41. In order for me to properly shift into gear, I would have to shift very slowly to allow the synchro-rings to catch up so I could get a smooth shift. Not a big problem there. Well, just now, if I try to do the slow shift, I get lots of "clanking" noises and the shifter starts to vibrate a lot while I put the transmission into neutral during the gear change from 3rd to 4th. At this point, I just keep the clutch pressed, since it sounds like it wants to explode, and I coast it to where I can pull over safely and stop. I let go of the clutch pedal and leave the transmission in neutral. Still, the shifter is vibrating and you can still hear some slight "clanking" noises.
now that the vehicle is stopped, with no foot on the clutch or gas pedals, if I move the shifter up or try to pull down into a gear, the vehicle starts to creep forward about an inch. Its as if somehow, the clutch is trying to grab even though the transmission is in neutral and the clutch pedal is not being pressed. I've been driving with the transmission tunnel off and I can manipulate the clutch fork and see that there is still play before it engages on the pressure plate fingers all while this is occurring. I can also see from the side of the bell housing that the throw-out bearing is not spinning or touching the fingers of the pressure plate while the clutch pedal is out.
What im planning to do tomorrow is:
Change out the top plate for another early h41 that I have. I've found a couple of forums, for diffrent vehicles, that say that maybe the shifter forks might be worn out and cause this issue. Originally, everything looked good inside of this transmsision as did the top plate. I saw nothing to signifiy anything was worn out and it all seemed tight and operated smooth outside of the vehicle.
2nd thing is to rebuild the cluch master and clutch slave cylinder. Currently, there are no leaks from either of the two. They are about 8 years old now and Im able to change gears smoothly with the vehicle off and me pressing on the clutch pedal.
All other clutch related components are new; pilot bearing, resurfaced flywheel, clutch disk, pressure plate, and throw-out bearing. They are all 3 speed clutch parts with a 4-speed bellhousing and 4-speed transmisison. I did make sure to check if my clutch disk is on backwards, and I have confirmed that it is properly oriented.
I know you guys like pictures, but its late at night. Hopefully I can get a video of this, maybe not while driving, but at least at idle to not cause further damage. Thanks for reading and any suggestions/comments you may have.
I've been having a lot of weird things going on with my 4-speed conversion into a 1971 fj40. Everything worked fine for the first 100 miles. The issue began when I try to shift from 3rd into 4th gear. It's an early style h41. In order for me to properly shift into gear, I would have to shift very slowly to allow the synchro-rings to catch up so I could get a smooth shift. Not a big problem there. Well, just now, if I try to do the slow shift, I get lots of "clanking" noises and the shifter starts to vibrate a lot while I put the transmission into neutral during the gear change from 3rd to 4th. At this point, I just keep the clutch pressed, since it sounds like it wants to explode, and I coast it to where I can pull over safely and stop. I let go of the clutch pedal and leave the transmission in neutral. Still, the shifter is vibrating and you can still hear some slight "clanking" noises.
now that the vehicle is stopped, with no foot on the clutch or gas pedals, if I move the shifter up or try to pull down into a gear, the vehicle starts to creep forward about an inch. Its as if somehow, the clutch is trying to grab even though the transmission is in neutral and the clutch pedal is not being pressed. I've been driving with the transmission tunnel off and I can manipulate the clutch fork and see that there is still play before it engages on the pressure plate fingers all while this is occurring. I can also see from the side of the bell housing that the throw-out bearing is not spinning or touching the fingers of the pressure plate while the clutch pedal is out.
What im planning to do tomorrow is:
Change out the top plate for another early h41 that I have. I've found a couple of forums, for diffrent vehicles, that say that maybe the shifter forks might be worn out and cause this issue. Originally, everything looked good inside of this transmsision as did the top plate. I saw nothing to signifiy anything was worn out and it all seemed tight and operated smooth outside of the vehicle.
2nd thing is to rebuild the cluch master and clutch slave cylinder. Currently, there are no leaks from either of the two. They are about 8 years old now and Im able to change gears smoothly with the vehicle off and me pressing on the clutch pedal.
All other clutch related components are new; pilot bearing, resurfaced flywheel, clutch disk, pressure plate, and throw-out bearing. They are all 3 speed clutch parts with a 4-speed bellhousing and 4-speed transmisison. I did make sure to check if my clutch disk is on backwards, and I have confirmed that it is properly oriented.
I know you guys like pictures, but its late at night. Hopefully I can get a video of this, maybe not while driving, but at least at idle to not cause further damage. Thanks for reading and any suggestions/comments you may have.