Destroying Guibos aka flex disk

[D Nice Iceman]

ok i just had my guibo replaced about a month ago and everything was going good. smooth acceleration and no vibration. noticed today a vibration again when accelerating, looked under the car at the guibo and started to see cracks in it. i dont know why they are breaking, but are there any aftermarket ones made out of polyurethane or anything stronger than stock. also where can i find them. thanks.

[D Nice Iceman]

anyone

[crisscross]

When I replaced mine, I had to replace the carrier bearing in the middle of the car as well. If there is any play in the carrier bearing, the flex disk will not hold up for long.

[D Nice Iceman]

when i replaced the guibo the bearing seemed to be in good shape. i just think that i need a stronger guibo because i beat the hell out of my car. i have been searching but i cant find any type of stronger guibo. if anything will an m3 guibo fit on a 325 and is it stronger. also have manual trans.

[crisscross]

I'm not sure if its any stronger, but I would think an m3 disk would fit and I also have a manual trans. I know when i was getting mine, there were a couple different part numbers based on model year. I would think that someone would make a poly urethane one. Maybe someone else can chime in.

[Mark@EACTuning]

www.eactuning.com/parts/product_details/26111227410

we offer that one for 50ish as well as an oem for a bit more. might be a good idea to change the center bearing as well.

www.eactuning.com/parts/product_details/26121227469

[Theo podges]

When I replaced mine, I had to replace the carrier bearing in the middle of the car as well. If there is any play in the carrier bearing, the flex disk will not hold up for long.

I'll also have to go with the carrier bearing that's faulty and due to this it wears out your flex disc.
My old man gave his 328 hell and at 260k k's he only had to change the carrier bearing twice and never the flex disc.

[BombSquad91]

Mark, why is the flexdisc picture the same as the center support?

[Mark@EACTuning]

I dunno why that is- odd thing is that the product pics were correct earlier. I also wanted to mention that I do have a cheaper center support on the site if you dont mind aftermarket.

[BombSquad91]

What's the difference between the OEM one and aftermarket one? Guibo that is.

[D Nice Iceman]

mark do you guys have polyurethane guibos, because the ones in the link appear to be rubber.

[BombSquad91]

Yeah. WE WANT POLY!!!! :soapbox:

[C Sean Watts]

mark do you guys have polyurethane guibos, because the ones in the link appear to be rubber.

NO! the flex disc's purpose is yield to vibration and still keep its structural strength. Urethane would hold up until a tiny crack starts...then it's all over but the tow truck. Rubber is much more tear resistant and will stay together.

[Bimrpwr]

mark do you guys have polyurethane guibos, because the ones in the link appear to be rubber.

Yeah. WE WANT POLY!!!! :soapbox:

Thats why they call it a flexdisc. That is one part you want to flex some.

When ever you change the flex disc it is recommended to change the CSB as well.

[BombSquad91]

That's what I said.

[D Nice Iceman]

i know that it needs to flex but all i was wondering was if they make poly ones because it still does flex but is a lot stronger. i have also came across people that have replaced it with a billit aluminum disk, and switched to solid tranny mounts and it worked out fine. so it still would work and i doubt that if there was a rubber disk and a poly disk the poly would out last rubber any day, rubber bushings or any type of rubber sucks because it will always crack and will destroy way faster than any polyurethane.

[cbjwthwm]

I have two 6-spd 540i's and have put > 200k on the two cars combined over almost ten years of driving and have only needed to replace the guibo and center bearing combo once, and it was after about 150,000 km on the older car. That driveline is dealing with a lot more weight and torque demands than you are, and in all likelihood a different problem must be killing your guibo. Putting in something stronger wouldn't really be dealing with the root cause, and would probably magnify the NVH of whatever vibration etc is killing it. I started getting clunking under extreme loads such as decel on steep grades and less so under wot when I needed to change the guibo/center bearing combo.

[BombSquad91]

That's what I said.

[Mark@EACTuning]

I do not offer poly guibos. The rubber ones will last 100k miles or more so long as there are not other problems with the drivetrain that are being overlooked.

I highly suggest checking your engine and transmission mounts out regularly. On my 528i I am doing an engine swap right now, and the passengers side motor mount was shot and the drivers side trans mount torn in two!

Mark

[jasonf860]

Poly guibo's are not offered anywhere. back when the E36 first appeared there was a lot of testing done on poly guibo's and the results were always failures. As posted earlier in the thread, they hold up well until the smallest crack appears. When that happens the fail quite quickly. The guibo the OP used was probably old stock and had dry rotted on the shelf.

[jmo69]

Another link
http://www.eeuroparts.com/Main/PartsResults.aspx