3rd gear synchro
Took the '90 535 to my Indy and he tells me the 3rd gear syhcro is going and no fix other than replacing the tranny. Not what I expected to hear. Then he says a used 5 speed is about $1000, plus another $450 labor.
Anyone has experince with replacing their 5sp gearbox, does this make sense?? Car has 133k miles, redline thruout.
Why is there "no other fix"? Can't they just replace the synchro ring, a $20 part? I have done my older BMW transmissions several times, but I am not familiar with that particular unit. I don't have my service manual handy to see how complex the job is. It still won't be cheap to take apart but should be a lot less than $1500.
Dennis
Grand Master
The Getrag tranny is a press-fit type. You press the case halves together and the shafts into the bearings. Basically, if you open the case up, you need to replace all the bearings.
Jeff
Bellevue WA
90 535iM - not much stock remains. 3.7 liters, ported head, cammed, 3.73 diffy, M5 brakes, MAFed, yadda yadda yadda
86 Porsche 951 - Track Toy
Big, Big Time Poster
Before drastic action, suggest you chane lube from
whatever you now use (probably MTL) to something else.- Maybe RedLine D4 ATF, or some other good tranny lube. Many people tell of fixing such marginal problems with a lube change.
Originally Posted by caster
Took the '90 535 to my Indy and he tells me the 3rd gear syhcro is going and no fix other than replacing the tranny. Not what I expected to hear. Then he says a used 5 speed is about $1000, plus another $450 labor.
Anyone has experince with replacing their 5sp gearbox, does this make sense?? Car has 133k miles, redline thruout.
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