Aftermarket Flex disc/Guibo from Revshift....preliminary review...

[thekurgan]

Sounds like something else, man, that thing was beefy. Did they have a max rating for it?

[Z4-VILLA]

no you must have miss understood.....i broke the hanger bearing which was the oem replacement.....the Revshift disc is awesome

[Blind32]

Originally Posted by Z4-Villalona

no you must have miss understood.....i broke the hanger bearing which was the oem replacement.....the Revshift disc is awesome

How did you notice you broke it? Did the car feel different or did you just look?

[Z4-VILLA]

vibration fromr previous breakage was duplicated after 4 days of hard running....

[thekurgan]

Originally Posted by Z4-Villalona

no you must have miss understood.....i broke the hanger bearing which was the oem replacement.....the Revshift disc is awesome

Yeah, forgot you had to replace that as well; the OEM bearing must count on some amount of slop, which you've taken care of with the other mods.

[Z4-VILLA]

all mounts motor tranny and guibo have been upgraded.....been on the phone all day with different parts of the US to try and make a polyurethane stamped driveshaft bearing so i can run that while i wait for my carbon fiber driveshaft......annoyed is what i am right now

[Z4-VILLA]

oem rubber on these cars is retaredly stupid and prone to failure.
whats worse is due to the rare nature of the car we cant get awesome aftermarket parts for the little things like this because our production numbers are waaay under 10k units on the planet

[BookerM3]

Your issues really don't sound like a Guibo or support bearing related.

Sounds to me like either driveline misalignment or excessive diff (tranny)movement.
I can understand that the Guibo and Bearing may fatigue in time, but the fact
that your support bearing failed so quickly mean there is a lot of driveshaft movement.

I would check the angle of the Tranny vs. Driveshaft and make sure you diff/
diff carrier don't have any excessive play.

[Z4-VILLA]

i just rebuilt my hanger bearing thingy using hot glue because of its very tough and flexable nature when cooled......then i sprayed black header paint over it.....will post pics

[ZStig]

are you still interested in an ess blower or not? you haven't answered my PMs

[Z4-VILLA]

I just checked my private messagues and yes I am still interested

[Z4-VILLA]

Originally Posted by thekurgan

Sounds like something else, man, that thing was beefy. Did they have a max rating for it?

i broke the rev shift solid guibo as well....
because i have a near new clutch and flywheel, im putting way too much snap to the ground....i was able to shear some clearance around the yoke side bolt carriers....i swapped in a stock guibo from turner and a stock driveshaft bearing....and i will try to properly break in the clutch.

epic

[thekurgan]

Originally Posted by Z4-Villalona

i broke the rev shift solid guibo as well....
because i have a near new clutch and flywheel, im putting way too much snap to the ground....i was able to shear some clearance around the yoke side bolt carriers....i swapped in a stock guibo from turner and a stock driveshaft bearing....and i will try to properly break in the clutch.

epic

Damn, didn't think that was even possible. Any chance there is an issue with the diff itself? I'm just thinking, there is some hard core resistance, zero give now, I mean your mods don't seem so torque radical (yet).

[Z4-VILLA]

i think the stock guibo is awesome after everything ive tried....hanger bearing on the D/S.....not so much....i will be sending off a perfectly new D/S hanger bearing so that it may be duplicated in such a manner where all the rubber pieces that BMW provides us can be reverse "iron manned" into polyurethane

[Oldsie]

I have a similar (5L40E) transmission with exactly the same output flange, that I'm swapping into an old Tr4, and I just don't understand how the flex disc attaches!!! The output flange is a shallow circular cup with 6 tapped holes, just like in your photos. But the flex disc only attaches using 3 bolts on each side. The yoke on the drive shaft side has 3 legs and 3 bolts. How does the flex disc attach to the transmission flange? I know this must sound stupid, but what am I missing?

[davesz4mc]

Blast from the past!!!

My center carrier bearing looks just like this one yikes!!!

[Finnegan]

Originally Posted by davesz4mc

Blast from the past!!!

My center carrier bearing looks just like this one yikes!!!

Looks like your vibration mystery is solved.

[tikamak]

So you recommend stock guibo ?

[Z4-VILLA]

I would stay with oem

[BruceJ]

Originally Posted by Z4-VILLA

I would stay with oem

I missed the fix - So in the end was it just a new clutch and lots of enthusiasm?

[Z4-VILLA]

Originally Posted by BruceJ

I missed the fix - So in the end was it just a new clutch and lots of enthusiasm?

oh yeah