Bad Guibo -----> Slower car

Anyone notice this?

slower reacting potentially I suppose. I just changed my transmission bushings to M3's this week and i can say that the car takes off in a more linear manner, so I'd assume the additional flex in a bad guibo could effect it in that sense.

No

Originally Posted by Avet4

slower reacting potentially I suppose. I just changed my transmission bushings to M3's this week and i can say that the car takes off in a more linear manner, so I'd assume the additional flex in a bad guibo could effect it in that sense.

No, it's not even like that for me. The car will have a terrible vibration over 3K in first second and sometimes 3rd. I can feel the transmission "shift" on hard shifts as if its re aligning itself with the driveshaft. Then again, my rear subframe is suspect.

Originally Posted by Iceman00

Anyone notice this?

Hmm yes and no and yes and no. These questions are hard to answer cause weren't not all on the same page here. This is either a hypothetical or car specific. Every e36 built before 95 is about 15 or more years old right now. And you dont know whats good and whats not, ya know?

Like in my car its very likely that i have increased drivetrain loss, considering all the parts are thrashed and no maintenance after 100k has been done.


In my case, i have a bad guibo and probably center support bearing aswell. I haven't actually took my car apart yet since thanksgiving is here and all by sunday ill have her back together so basically right now i cant tell you want the problem is. Anyway my car is still driveable, but when i hit the gas and require some torque from the m50 i get this horrible thudding/knocking from where the guibo is. Visual inspection showed it to be shot.

When you gun a car from a stop, dont know about launches those would probably destroy whats left of the guibo on spot, but just gunning it from a stand still youll notice it takes the car awhile to hook up before it gets going. It hard to say these things make your car slower but everytime you fix something like this and take a ride your car feels faster.

So basically ive noticed you lose responsiveness more so than power. Although my car was in limp mode so i never really went all out yet. Ill let you know my findings after this weekend.

I do feel it is a possibility though. ill try to find my picture of my bad guibo and all the cracks and chunks missing from it.

Originally Posted by Iceman00

No, it's not even like that for me. The car will have a terrible vibration over 3K in first second and sometimes 3rd. I can feel the transmission "shift" on hard shifts as if its re aligning itself with the driveshaft. Then again, my rear subframe is suspect.

Im scared of the subframe problem to, the best thing to do is get under your car. Maybe pull the exhaust and check it out. Alot of these diagnostics can be done in home. And even if its just an extra step its worth it to know.

I have the same thing happen in my car and it only thuds when the drivetrain is said to flex. So basically whenever there is a substancial about of power or torque being made it thuds. I located the thunking from in between the two front seats on the tranny hump. It sounds like a machine gun and you can feel it as if someone is banging on the insid eo fthe hump with a hammer.

Originally Posted by m1356guy

No

I've noticed you've got a whole lot of answers going on with almost 0 explaining... maybe you wanna get on that before you start giving out info

I wish I knew

Its the guibo knocking against the gear selector rods which run perpendicular from the stick down and pass the guibo into the tranny. Thats why you get a rapid thudding and stick shake! Why BMW in their vast knowledge though it wise to leave only 5mm of clearance between a selector rod and a FLEX-disc is beyond me! Iv just changed mine and its slowly starting to creep back in! What a joke, BMW you make beautiful cars but you can suck my stick when it comes to this s$%t piece of design. And yes their will be momentary lag on throttle if the flex-disc has developed play.

Originally Posted by mac daddyo

Its the guibo knocking against the gear selector rods which run perpendicular from the stick down and pass the guibo into the tranny. Thats why you get a rapid thudding and stick shake! Why BMW in their vast knowledge though it wise to leave only 5mm of clearance between a selector rod and a FLEX-disc is beyond me! Iv just changed mine and its slowly starting to creep back in! What a joke, BMW you make beautiful cars but you can suck my stick when it comes to this s$%t piece of design. And yes their will be momentary lag on throttle if the flex-disc has developed play.

What do you mean its still there? You replaced the guibo and you still have the shaking? Any idea why?

It cant possibly be jus tbad design.

Possibly coz i bought a cheap ass guibo off ebay!! which was fine for about 2 months but as i drive it like i stole it its slowly giving up the ghost again. Plus i never changed the centre support bearing so if thats knackered it will screw up guibo after guibo. But either way it would last alot longer if it wasnt being knocked against the bloody ill situated slector rods on every revolution!!

There are some other possible culprits. Engine and diff mounts in my car were shot at 88k. My guibo was good but that was replaced as well.

The biggest difference that I've noticed is that shifting is much more precise and consistent.