Vibration after 5spd swap
#1
Vibration after 5spd swap
Hey guys,
So about a couple months ago I had a 5spd swap done to my SC with a W58 out of a 92 sc300 into my 98 sc300. I used the w58, got a new clutch / pilot bearing for it, used the existing manual driveshaft for it. After the swap, I'm getting a weird vibration from directly underneath the car when I accelerate, but the weird thing is it doesn't happen when I'm in a turn (coming off an exit ramp and accelerating).
Could this be driveshaft related? As far as I know, when I got the driveshaft it was all in one piece so I'm not sure if it needs rebalancing or not. I'm just trying to see if anyone here has experienced something similar so I can narrow down the problem. Thanks!
So about a couple months ago I had a 5spd swap done to my SC with a W58 out of a 92 sc300 into my 98 sc300. I used the w58, got a new clutch / pilot bearing for it, used the existing manual driveshaft for it. After the swap, I'm getting a weird vibration from directly underneath the car when I accelerate, but the weird thing is it doesn't happen when I'm in a turn (coming off an exit ramp and accelerating).
Could this be driveshaft related? As far as I know, when I got the driveshaft it was all in one piece so I'm not sure if it needs rebalancing or not. I'm just trying to see if anyone here has experienced something similar so I can narrow down the problem. Thanks!
#7
Nope i had the same problem with my car when i did the swap. It ended up being the flywheel bolts were not tight enough. I pulled the trans again torqued them down another half turn and had it all back together in 2and a half hours. problem solved :P
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#8
Pole Position
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I think I would start with a new tranny mount. That was my problem and it is very easy and cheap to do. Mine looked good, but on comparison to the new one it was crushed down a little from the new one. Huge difference for me.
#10
I would think if it was the driveshaft it would do it all the time. Some of them also have weights on them... but I doub't it would be that significant. Sounds like mounts to me to.
#11
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Gotta be mounts, makes sense -- the weight of the car when turning shifts, if one side of the mount is compressed over the other, naturally when you turn and weight shifts over, a bad mount would flex enough to cause vibration due to unequal weight distribution. It vibrates less turning the other way because that side of the mount still has enough to keep it from flexing too much.
#12
Lexus Test Driver
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it really depends on the frequency of the vibration.
is it high frequency and RPM dependent, or is it low frequency and speed dependent?
high frequency rpm dependent = clutch/flywheel/engine
low frequency road speed dependent = driveshaft/drivetrain
you could have a combination of the two (bad trans mount AND bad driveshaft u-joints).
is it high frequency and RPM dependent, or is it low frequency and speed dependent?
high frequency rpm dependent = clutch/flywheel/engine
low frequency road speed dependent = driveshaft/drivetrain
you could have a combination of the two (bad trans mount AND bad driveshaft u-joints).
#13
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Clutch is brand new
Driveshaft is from a 92 SC300.
The mount is Old , not broken atleast when it got installed.
It's not the flywheel,. It's driveshaft or motor mount.
Driveshaft is from a 92 SC300.
The mount is Old , not broken atleast when it got installed.
It's not the flywheel,. It's driveshaft or motor mount.