Transmission Stabilizing Tips?
#1
Transmission Stabilizing Tips?
I'm getting a lot of movement in my 5 speed under wot that is making it tough to find third and fourth gears. I'm currently using Mazda comp motor mounts and energy suspension diff mounts. Transmission runs flawless under normal driving, so I don't think the issue is internal.
Is there anything else I can do to help this? Would beefier engine mounts make a difference? I did a search but didn't see much except an an old thread on here saying transmission mounts aren't needed. Is this still the consensus?
Car is an 1999 NB donor Exocet with 255whp, but is a normal Miata for the sake of the drivetrain (still has ppf).
Thanks in advance for any advice.
Is there anything else I can do to help this? Would beefier engine mounts make a difference? I did a search but didn't see much except an an old thread on here saying transmission mounts aren't needed. Is this still the consensus?
Car is an 1999 NB donor Exocet with 255whp, but is a normal Miata for the sake of the drivetrain (still has ppf).
Thanks in advance for any advice.
#2
Moderator
iTrader: (12)
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 21,026
Total Cats: 3,123
Motor mounts. AWR, Blackbird, V8Roadsters all make them and many vendors sell them. 949 Racing and Goodwin Racing sell them for sure, too.
The PPF will always flex some but the motor mounts made a big difference for me. Also refresh the shifter bushings if you never have.
The PPF will always flex some but the motor mounts made a big difference for me. Also refresh the shifter bushings if you never have.
#3
Motor mounts. AWR, Blackbird, V8Roadsters all make them and many vendors sell them. 949 Racing and Goodwin Racing sell them for sure, too.
The PPF will always flex some but the motor mounts made a big difference for me. Also refresh the shifter bushings if you never have.
The PPF will always flex some but the motor mounts made a big difference for me. Also refresh the shifter bushings if you never have.
Do you have a preference on which ones? I'd prefer to get the best and be done with it. Is it possible to do motor mounts without pulling the whole engine, just support it and do one side at a time?
Edit: Greg FTW!
Last edited by LukeG; 03-02-2018 at 03:27 PM.
#6
I used only a floor jack to support the engine, doing one side at a time. No issues like that but I did have a sturdy rope looped from the engine to my garage rafters to hold it if anything were to fail.
I also had issues lining up the third bolt on the drivers side with the AWR mount. And when I say "issues" I mean the hole in the mount was completely off, I had to break out the dremel and enlarge it to fit the bolt into the block. Is this an issue with AWR mounts? Was this a one off that snuck past QC? I have no idea.
#7
I installed the AWR mounts recently, yes stiffer engine mounts solve all your trans shifting issues. My shifter used to move .5"-1" upon stomping on it, it now doesn't move more than a quarter inch if that.
I used only a floor jack to support the engine, doing one side at a time. No issues like that but I did have a sturdy rope looped from the engine to my garage rafters to hold it if anything were to fail.
I also had issues lining up the third bolt on the drivers side with the AWR mount. And when I say "issues" I mean the hole in the mount was completely off, I had to break out the dremel and enlarge it to fit the bolt into the block. Is this an issue with AWR mounts? Was this a one off that snuck past QC? I have no idea.
I used only a floor jack to support the engine, doing one side at a time. No issues like that but I did have a sturdy rope looped from the engine to my garage rafters to hold it if anything were to fail.
I also had issues lining up the third bolt on the drivers side with the AWR mount. And when I say "issues" I mean the hole in the mount was completely off, I had to break out the dremel and enlarge it to fit the bolt into the block. Is this an issue with AWR mounts? Was this a one off that snuck past QC? I have no idea.
#8
Motor mounts. AWR, Blackbird, V8Roadsters all make them and many vendors sell them. 949 Racing and Goodwin Racing sell them for sure, too.
The PPF will always flex some but the motor mounts made a big difference for me. Also refresh the shifter bushings if you never have.
The PPF will always flex some but the motor mounts made a big difference for me. Also refresh the shifter bushings if you never have.
The poly mounts are a huge increase in vibration over the rubber, but as your profile is an Exocet, I don't think you'll notice or care
#9
Could it also be the transmission? I went from Mazdacomp rubber to the Goodwin 70 durometer and new shifter bushings. It made a huge difference, but on occasion my third gear is still hard to find. I chalk this up to my worn 5 speed and/or a sad 3rd gear syncro.
The poly mounts are a huge increase in vibration over the rubber, but as your profile is an Exocet, I don't think you'll notice or care
The poly mounts are a huge increase in vibration over the rubber, but as your profile is an Exocet, I don't think you'll notice or care
#12
Chatting with Tony from AWR over email and he had some questions about your mounts. Please email him at tony@awrracing.com and let him know you were the guy who posted about the issue.
#13
Chatting with Tony from AWR over email and he had some questions about your mounts. Please email him at tony@awrracing.com and let him know you were the guy who posted about the issue.
#20
They offered to replace the mount for free, but I declined at this point in time due to the hassle needed to replace the drivers side(pulling the header), and that I don't see any issues yet with my enlarged bolt hole.