Motor mounts and shifting
#1
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Motor mounts and shifting
This probably has a very simple explanation, but I don't know squat about transmissions. I'll probably feel stupid after hearing the answer...
Question: why is it that stiffer motor mounts make shifting smoother? Is the bellhousing flexing? Doesn't seem like it can flex, but who knows.
I ask b/c I was considering the FM DP brace.
Question: why is it that stiffer motor mounts make shifting smoother? Is the bellhousing flexing? Doesn't seem like it can flex, but who knows.
I ask b/c I was considering the FM DP brace.
#2
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The entire drivetrain is attached to the car at 4 points - two motor mounts and two diff mounts. Stiffen them up and the drivetrain rocks in the chassis less, which moves the shifter around less and makes shifting easier.
#4
"BradC" on here got his hands on this Carbing transmission brace, which I would imagine would be quite nice to have and reduce almost all drivetrain rock and reduce wear on the engine/diff. mounts as well.
They're discontinued and are as rare as hens teeth. He said something about having a similar part made but nothing ever came of that. I would love to get my hands on such a device.
They're discontinued and are as rare as hens teeth. He said something about having a similar part made but nothing ever came of that. I would love to get my hands on such a device.
#7
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better solution to guaranteed snapping 3rd is to attach the seat to the drivetrain instead of the chassis. That way when the motor mounts wear out you can still SNAP THAT BITCH yeah baby horray!!
#8
Looked up the carbing brace, couldnt find nearly any info on it. But I did also find this trans brace idea.
http://www.miata.net/products/hot/images/rsp301-027.jpg
I'll start a thread on the idea of making these soon and see what happens.
http://www.miata.net/products/hot/images/rsp301-027.jpg
I'll start a thread on the idea of making these soon and see what happens.
#13
Moss used to have a similar brace but doesnt appear like it is available anymore. the picture is still up though and gives a better idea of how it mounts. Looks like it would be pretty simple for someone to make. It's basically like the Racing beat control arm brace but it also bolts to the transmission.
http://www.miatamania.com/Shop/ViewP...05&SortOrder=1
http://www.miatamania.com/Shop/ViewP...05&SortOrder=1
#16
"BradC" on here got his hands on this Carbing transmission brace, which I would imagine would be quite nice to have and reduce almost all drivetrain rock and reduce wear on the engine/diff. mounts as well.
They're discontinued and are as rare as hens teeth. He said something about having a similar part made but nothing ever came of that. I would love to get my hands on such a device.
They're discontinued and are as rare as hens teeth. He said something about having a similar part made but nothing ever came of that. I would love to get my hands on such a device.
#18
I also took the mass damper off the drive shaft and have an unsprung 4 puck clutch with a 7 lb flywheel though with lots of overrun buzz though by taking the sprung disk out.
Based on other peoples comments I didn’t expect the diff mounts to be as bad as what I am exeriancing but maybe it is other things with my setup that are contributing.
The soft AWR engine mounts were unbearable with this combo and I went back to Mazda comps.
Bob
#20
I had my MMR engine mounts in the car for about 10 minutes. After busting knuckles putting them in for an hour I promptly pulled them out. I did like the combo of one MMR and one stock mount. I also had MMR diff mounts in my old car and didn't mind them. I NEVER missed gears with that set up.