Manual Trans. Thud when shifting

[Jewishthunder]

OK, I'm going with the BMR kit. If this works, I'm gonna shout it from the mountain!

If it doesn't, I'll apologize to you thoroughly. I'm just such a happy camper!

Sponsored

 

[Genxer]

Great find, I hope it works out for you guys. Please keep everyone updated. This thread is ridiculously long, and it's nice to finally see an interesting development.

 

[WeinerDog]

If it doesn't, I'll apologize to you thoroughly. I'm just such a happy camper!

Man, I will be over the moon. I'm ordering the kit tomorrow.

 

[5ABI VT]

Confused of you guys are talking about the vertical links above ? I have the vertical links and more stuff going on soon but I have a hard time seeing how they can make that noise idling at a stop and recreating that noise.

Not saying impossible and trying to picture what is happening .. pushing the car into gear from a stop holding the clutch down and the momentum from the input shaft does carry through the shaft to the synchros through to the output shaft.. Through the driveshaft to the diff and out to the axles and tries to rotate the stopped wheels.. It's not much momentum id imagine but possibly enough to cause the force to reach the links which.. I honestly haven't even looked in depth at the rear suspension enough to try and understand how it works and what the links do. Just thinking and typing here but I guess it does seem possible ? I know in the bmr videos on YouTube I've watched there's a hell of a lot of movement in the suspension in stock form.

 

[Jewishthunder]

Confused of you guys are talking about the vertical links above ? I have the vertical links and more stuff going on soon but I have a hard time seeing how they can make that noise idling at a stop and recreating that noise.

Not saying impossible and trying to picture what is happening .. pushing the car into gear from a stop holding the clutch down and the momentum from the input shaft does carry through the shaft to the synchros through to the output shaft.. Through the driveshaft to the diff and out to the axles and tries to rotate the stopped wheels.. It's not much momentum id imagine but possibly enough to cause the force to reach the links which.. I honestly haven't even looked in depth at the rear suspension enough to try and understand how it works and what the links do. Just thinking and typing here but I guess it does seem possible ? I know in the bmr videos on YouTube I've watched there's a hell of a lot of movement in the suspension in stock form.

I installed the vertical links at the same time, I don't think they contribute to the stopping of the thud. I attribute the fix to the bk054 mounts.

 

[Joshg120]

I'd like to see further developments on this as well. Do we know if the steeda differential bushing kit can give the same result as the BMR? Just curious as I have the steeda kit waiting to be installed but may switch if they don't give the same result

 

[5ABI VT]

I installed the vertical links at the same time, I don't think they contribute to the stopping of the thud. I attribute the fix to the bk054 mounts.

Don't these parts have names or does everyone enjoy calling them by part numbers ? :frusty:

 

[SLA]

Don't these parts have names or does everyone enjoy calling them by part numbers ? :frusty:

Differential Bushing Lockout Kit

 

[Jewishthunder]

Don't these parts have names or does everyone enjoy calling them by part numbers ? :frusty:

There are a ton of different parts that go in the same spot. Way easier to be specific by the name and not make anything weird here.

Differential Bushing Lockout Kit

 

[woofwoofdroolyface]

Here's an interesting video of the subframe movement under acceleration and a mild launch from Steeda:

[ame]

It'd be great if we could get a video like this of putting the car in first after decelerating to a stop and verify that there is rear subframe movement. The BK054 replaces the bolt and fills the void in the mount in the left of the frame next to the sticker ending in "ARC".

 

[WeinerDog]

When they say competitor,who and what product are they talking about? The bk054 doesn't look like it's permanent.

 

[Jewishthunder]

When they say competitor,who and what product are they talking about? The bk054 doesn't look like it's permanent.

That video doesn't look like it's comparing the right product. Plus, you can still see that subframe bolt moving pretty violently.

 

[woofwoofdroolyface]

They're not talking about the BK054 and the Steeda Differential Bushing Inserts specifically in that video, they're trying to sell other IRS components to stop wheel hop. But it's a great video to illustrate how much movement there is in the rear subframe that can cause the thud.

 

[woofwoofdroolyface]

Actually here's a better video specifically on the mounts we're discussing from Steeda:

[ame]

 

[Jewishthunder]

Steeda's wrap up comparisons are pretty hilarious. It doesn't actually compare it anything real that I've seen? Definitely not comparing it to BMR's pieces. They're so assumptive lol.

Sponsored