curtis73
Member
- Joined
- Sep 1, 2018
- Messages
- 121
- Reaction score
- 6
- Points
- 18
- Location
- Harrisburg, PA
- Vehicle Year
- 1994
- Make / Model
- Mazda
- Engine Size
- 4.0
- Transmission
- Manual
My M5R1 in my 94 B4000 is just not shifting right. It only has 97k on it. I have tried three different fluids (MercV, RP Synchromax, PZ Synchromesh) and no matter what I do, the first and second synchros just aren't doing their jobs. I have fully ruled out the clutch. Not only is it a brand new clutch, master, and slave, it did this before the clutch replacement, and it also is working correctly. If I'm at a stop light (neutral, clutch out) then push in the clutch and go for first, it won't go without really pushing hard. Once it is in, I can take it back out and leave the clutch in and it goes straight back in with no click, even after a few minutes, so I know the clutch is disengaging and not creeping. Shifts from 1-2 require equally large effort and it takes forever. Third is a little better, and 4th/5th are fine. I thought about going one step thicker than the Synchromesh with something like RedLine, but the fact that the three fluids I tried had no effect on it makes me think it's just time for more drastic measures.
The first thought is to just rebuild mine, but wanted opinions on the HD swap.
Other than the higher 1st and 2nd ratios, is there anything else internal that makes it an "improvement", or is it just the increased torque capacity from the higher ratios? Good sources for some possible lower ratios while I'm in there? Specifically reverse. I'm Ok with 1-5, but reverse sucks with a trailer.
The first thought is to just rebuild mine, but wanted opinions on the HD swap.
Other than the higher 1st and 2nd ratios, is there anything else internal that makes it an "improvement", or is it just the increased torque capacity from the higher ratios? Good sources for some possible lower ratios while I'm in there? Specifically reverse. I'm Ok with 1-5, but reverse sucks with a trailer.