Polyurethane flex disk?

[mr.happy]

Dose any one know if any are made for early cars?


Thanks Robert

[Simon S]

interesting.. does any one know if they've ever been made?

if not, why?

[Rennsport]

i can think of a good reason not to have one, FLEX

if the drive train does not have a flex point in it it will destroy the driveshaft/joint/diff with every hard shift or burnout.
Think about it, say your taking your wheels off, when you break the lug bolts loose you snap the wrench. so what just happened? You brought the torque on instantly and you BROKE the bolts loose. So if you bring the torque on suddenly from the engine, parts are going to break or twist.

Yes polyurethane does have some flex to it, but its not far off from a solid component, which of course if you have ridden in a car with polyurethane suspension bushings you would know.

[Teaguer]

^ WTF are you talking about ?
There have been plenty of guys and race shops that have eliminated the Guibo with harder material .

There actually was one online vender that sold a beefier poly Guibo , if I remember correctly one guy ordered it and it turned out to be in the bigger Eta size ....wich could actually be a good thing .
But he never ran it as he didn't want to switch to the Eta d-shaft and output flange .

[Jean]

+1. There is still clutch, tires. Should just bring a guibo to a shop and have them make the same thing out of metal. Not for a street car probably, I am sure it would present more noise and/or vibration...

[browntown]

I think you may be able to use a m5 guibo as an upgrade if your search for poly comes up short. Not sure about the eta application, see herre: http://www.e30m3performance.com/inst...uibo/index.htm

If anyone makes it or can tell you one way or another its Andreas at AKG. Seems like every piece of rubber they've replaced with either delrin, poly, or solid aluminum at some point. Find his email address at www.akgmotorsport.com or better yet, call them.

[mr.happy]

I found this on e30tech but it is for a Merkur xr4ti.

http://www.opmd.com/main.cfm?tpl=product.cfm&pid=833

[mikeedler]

I have the M5 guibo on my M3. had to buy the M5 bolts to go with it.

[uofom3]

I have the M5 guibo on my M3. had to buy the M5 bolts to go with it.

yup.

Gustave made an AL "guibo" thing for something in the steering column (yes, very technical explanation I know) - but I've never heard of anyone stateside running a solid flex-disk on the street.

[ditchdigger]

I found this on e30tech but it is for a Merkur xr4ti.
http://www.opmd.com/main.cfm?tpl=product.cfm&pid=833

I know when the guibo on my XR4Ti failed I went to the BMW dealer and got a new one. It was like 12 years ago but i remember it being for a 3 series. I had no interest in BMW's back then so I didnt commit the part number to memory though.

edit found the numbers
GUIBO (BMW REPLACMENT, A.K.A FLEX DISC)
-O.E. REF. PART #, 2611-1-107-832
-KARLYN'S PART #, 16-986M
-B/A REF. PART #, 103-2103


i am sure someone can figure out what car that PN is for.

[AndrewBird]

Considering that guibos are used only on a hand full of cars (throughout history), I can't imagine that there would be a problem. Now, I'm not saying there aren't downsides to it, but it's not going to destroy the car.

[blunttech]

i can think of a good reason not to have one, FLEX

if the drive train does not have a flex point in it it will destroy the driveshaft/joint/diff with every hard shift or burnout.
Think about it, say your taking your wheels off, when you break the lug bolts loose you snap the wrench. so what just happened? You brought the torque on instantly and you BROKE the bolts loose. So if you bring the torque on suddenly from the engine, parts are going to break or twist.

Yes polyurethane does have some flex to it, but its not far off from a solid component, which of course if you have ridden in a car with polyurethane suspension bushings you would know.

where is the flex in american muscle cars? its just not true what you say

[browntown]

I know when the guibo on my XR4Ti failed I went to the BMW dealer and got a new one. It was like 12 years ago but i remember it being for a 3 series. I had no interest in BMW's back then so I didnt commit the part number to memory though.

edit found the numbers
GUIBO (BMW REPLACMENT, A.K.A FLEX DISC)
-O.E. REF. PART #, 2611-1-107-832
-KARLYN'S PART #, 16-986M
-B/A REF. PART #, 103-2103


i am sure someone can figure out what car that PN is for.

Napaonline lists that BA # for the merkur, but has a different beck arnley number for the bmw. I was really hoping they'd be the same #.

[Aptyp]

to the misguided ones. Guibo/flex disk is an economical way to reduce vibration. BMW used just for that reason. If you look at old guibos from 3.0cs and bavarias they are huge and metal lining. The expensive way was to use another U-join like in the back of the drive shaft. And nothing beats mercedes having 2 guibos, one on each side of the drive shaft. There are solid guibos available, Korman Auto used to have them. Here's the bad part: if you're not racing with it, you're destroying your car. With solid guibo you'll need solid center-bearing (driveshaft support) or a 1 piece drive shaft (if you can find a shop to machine and balance one). So just use a rubber guibo, spent that $40 once every few years and be satisfied with the fact that BMW didn't make it difficult. an hour well spent on the weekend.

[der affe]

to the misguided ones. Guibo/flex disk is an economical way to reduce vibration. BMW used just for that reason. If you look at old guibos from 3.0cs and bavarias they are huge and metal lining. The expensive way was to use another U-join like in the back of the drive shaft. And nothing beats mercedes having 2 guibos, one on each side of the drive shaft. There are solid guibos available, Korman Auto used to have them. Here's the bad part: if you're not racing with it, you're destroying your car. With solid guibo you'll need solid center-bearing (driveshaft support) or a 1 piece drive shaft (if you can find a shop to machine and balance one). So just use a rubber guibo, spent that $40 once every few years and be satisfied with the fact that BMW didn't make it difficult. an hour well spent on the weekend.

the ML (2004) i did a front driveshaft on today didn't have any guibos at all