clunking underneath by the shaft hump.

[long tall eta]

Good news! Sounds like you might need to get your clunk locater recalibrated though....

clunk locator, i like that.

thanks to all you guys that put up with my amatureness.

[LJ851]

only makes the noise when braking and it is definetly against the hump between the pass seat and the console.

well, i got lucky, it's the drivers side lower control arm bushing.

Good news! Sounds like you might need to get your clunk locater recalibrated though....

[long tall eta]

well, i got lucky, it's the drivers side lower control arm bushing.

[long tall eta]

when i modify my search on real to an 88i, those parts (14/15) are listed, but not for my car. i'm beginning to lean towards the csb letting go. but still, why only when braking. i can downshift from high speep through the gears all the way to 2 or 3 mph and get no clunk, only while on the brake. if it was the csb, wouldn't there be other symptoms/vibrations involved?

[long tall eta]

found 14 and 15 in real oem those parts are not listed as being used in my 86 eta.

[long tall eta]

in which category in real oem is this diagram from/

[LJ851]

are 14 and 15 the ones that keep the drive train from shifting forward?

Yes. 14 is slotted at the bolt holes to allow you to set 15 at a close clearance to the front subframe. Under normal driving and not braking, 15 touches nothing. When the brakes are applied hard enough to shift the power unit forward, 15 contacts the front subframe and stops the forward movement.

It's not a damper, it's sole purpose in life is to stop the power unit moving forward.

[long tall eta]

14 is metal, 15 is rubber

are 14 and 15 the ones that keep the drive train from shifting forward?

[pventojr]

If you field he nock noise went tap on brake pedal it could by control arm bushing on the loli pop is broken, drive the car and tap brake pedal couple times and goin to field the tire moving back and forward

[jalopi]

What is 14/15? Some sort of vibration damper or something? Doesn't look very important

[LJ851]

trans mounts a only 3 years old and i was able to get under there enough to confirm that they are ok. what is the mount that you speak of?

14 is metal, 15 is rubber

[jalopi]

Do they visually look OK or did you try jacking it up a bit to see how far the engine/trans moves?

[long tall eta]

trans mounts a only 3 years old and i was able to get under there enough to confirm that they are ok. what is the mount that you speak of?

[LJ851]

my bad, that is a trans mount.

i'm wondering if the csb broke free? it sucks i cant get her up high enough (lent jack to friend) to pull the heat shield. only makes the noise when braking and it is definetly against the hump between the pass seat and the console.

There is a mount that keeps the engine/trans from shifting forward but it would be difficult for it to fail. If the noise and rubbing happen at the tunnel between the seats i would look at the trans mount first.

[long tall eta]

Call me crazy, but I'm pretty sure that part number 2 in that diagram is a trans mount.

I'm no e30 expert, so I can't speak for every model ever made, but there are no drivetrain mounts (as far as I know) between the engine mounts and the trans mount. The only bushings someone could misconstrue as drivetrain mounts/bushings and are right next to the bellhousing are the control arm bushings.

Have a friend get in the passenger seat and take a video so we can hear the noise.

my bad, that is a trans mount.

i'm wondering if the csb broke free? it sucks i cant get her up high enough (lent jack to friend) to pull the heat shield. only makes the noise when braking and it is definetly against the hump between the pass seat and the console.