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I am in the middle of replacing my flywheel / clutch / pressure plate etc. I am planning to replace all of the hydraulics as well. After reading several of the posts on here recently I am thinking about replacing / upgrading the TT bushings. Couple of questions:
How can I tell if they are good; bad or going?
Where can I get upgraded parts?
I am in the middle of replacing my flywheel / clutch / pressure plate etc. I am planning to replace all of the hydraulics as well. After reading several of the posts on here recently I am thinking about replacing / upgrading the TT bushings. Couple of questions:
How can I tell if they are good; bad or going?
Where can I get upgraded parts?
Current power levels are 467 RWHP 413 RWTQ
TIA
Typically, you will find cracking around the metal inserts(like I found on mine). Based on a recommendation from RPM, I replaced my bushings with BMW bushings. Got them right from the BMW dealership on Golf road.
Typically you will see the rubber coming apart around the steel inserts that the bolts go into. If it is really bad you will see the rubber separated.
Also check the center 'doughnut' around the shaft for marks of it hitting the inside of the housing.
Anthony
What does contact between the doughnut and the housing indicate? I have my TT apart right now, and I do see some indications that the doughnut has contacted the inside of the tube. There are no obvious problems with the couplers, but I haven't take them off yet. I understand that the driveshaft can whip at high RPM and contact the housing, but short of upgrading to a carbon shaft, what should I do? Replace the couplers? Balance the shaft? Replace the bearings? The only local shops I could find said they could only balance the center portion of the shaft, not the whole assembly.
What does contact between the doughnut and the housing indicate? I have my TT apart right now, and I do see some indications that the doughnut has contacted the inside of the tube. There are no obvious problems with the couplers, but I haven't take them off yet. I understand that the driveshaft can whip at high RPM and contact the housing, but short of upgrading to a carbon shaft, what should I do? Replace the couplers? Balance the shaft? Replace the bearings? The only local shops I could find said they could only balance the center portion of the shaft, not the whole assembly.
Really, it indicates that it has done exactly what it is designed to do. That snubber is there to protect the driveshaft if the transmission has been downshifted at a high speed (or as GM puts it "higher than recommended" speed).
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13
Originally Posted by Numb
What does contact between the doughnut and the housing indicate? I have my TT apart right now, and I do see some indications that the doughnut has contacted the inside of the tube. There are no obvious problems with the couplers, but I haven't take them off yet. I understand that the driveshaft can whip at high RPM and contact the housing, but short of upgrading to a carbon shaft, what should I do? Replace the couplers? Balance the shaft? Replace the bearings? The only local shops I could find said they could only balance the center portion of the shaft, not the whole assembly.
It would be impossible to balance everything but if you do see contact then I would if nothing else check the shaft to see if it is still straight.
If you see contact then you know the shaft has moved, and would increase the load on the couplers, increasing the chance of breaking.
If nothing else placing one solid coupler will reduce it's chances of flex and will give you a more solid driveline.
Of course the carbon has still be the ultimate proven design.