F8X M3/M4 CF Drive shaft mod

[bigjae46]

reported to mods for parts curation. consider your days numbered

🤣🤣🤣…this more like a dump and run away…🤣🤣🤣

[Slideways]

reported to mods for parts curation. consider your days numbered

What's-his-face took over jae's account

[usdmej]

I could make some money by facilitating the transaction…

reported to mods for parts curation. consider your days numbered

[EthanolTurbo]

BTW i took my driveshaft back to the shop, explained the issue andnthey said they will work on it. I noticed the CV joint has no articulation or potential movement once installed so that could be it.

They claimed it could be my diff mounts etc... they're OEM other than the poly bushing so I gotta imagine they would vibrate less than a solid solution.

They might also have me bring the car over to check it out in person. Stay tuned. The CF driveshaft might be going back in my car.

[EthanolTurbo]

Can anyone pull tthis measurement? Has to be from the car. Worst case, I can wait until this weekend to get a measurement.

“the dimension from the face of the rubber flex disc installed on the transmission yoke to the face of the rear CVJ yoke on the differential.”

This is from mine. However this was pulled from a database.

[0-60motorsports]

Can anyone pull this measurement? Has to be from the car. Worst case, I can wait until this weekend to get a measurement.

“the dimension from the face of the rubber flex disc installed on the transmission yoke to the face of the rear CVJ yoke on the differential.”

Hopefully it's the same for 6MT and SMG cars…..

[bigjae46]

Can anyone pull this measurement? Has to be from the car. Worst case, I can wait until this weekend to get a measurement.

“the dimension from the face of the rubber flex disc installed on the transmission yoke to the face of the rear CVJ yoke on the differential.”

[Cronenberged]

Understood, thank for doing this!

OK, I'll get a shaft this week and look out for the upcoming process.

I do agree that we should find an established shop that can balance them to perfection.

This 100% and warranty even if it's only for a year is better than nothing.

[x Spades x]

You would need to buy on and then contact my contact.

While I could make some money by facilitating the transaction…I’m doing it to help the community. I’ve certainly benefitted from others doing leg work to get a vendor on board.

Understood, thank for doing this!

OK, I'll get a shaft this week and look out for the upcoming process.

I do agree that we should find an established shop that can balance them to perfection.

[Cronenberged]

What's the torque rating on the F8X cf driveshaft? Aside from turbo and superchargered cars most cars with aftermarket running M/A won't see torque above 450ft lbs.

[bigjae46]

From the vendor:

“So we offer a one year warranty parts and labor. The only exception is if vehicles are tuned beyond the capabilities of the components.”

If the shaft blows apart then probably wouldn’t fall under warranty. High speed vibration - should be covered unless he shaft is showing signs of being subjected to high levels of torque.

[0-60motorsports]

You would need to buy on and then contact my contact.

While I could make some money by facilitating the transaction…I'm doing it to help the community. I've certainly benefitted from others doing leg work to get a vendor on board.

Thank you for doing this! I'm sure we all appreciate it.

[bigjae46]

Would we buy our own and ship them or will you be sourcing them and going through your contact?

You would need to buy on and then contact my contact.

While I could make some money by facilitating the transaction…I’m doing it to help the community. I’ve certainly benefitted from others doing leg work to get a vendor on board.

[x Spades x]

Still working on some details but so far…

$800 shipped. Only need the F8X driveshaft. They source the flanges and parts. I’m waiting for more details -

- can I provide the CV joint and guide bushing?
- are the flanges machined, reused from a different shaft?
- what is the warranty?
- does it cover high speed vibrations?

let me know if I need to ask any other questions.

Would we buy our own and ship them or will you be sourcing them and going through your contact?

[Cronenberged]

I would be more inclined if we can find a single source/shop that will do these right and not mess them up as opposed to some others who tried a shop and it didn't work. $800-1000 is decent for this mod and worth it at that cost imo.