What else to replace when replacing transmission?
Thread Starter
Cruising
Joined: Mar 2025
Posts: 12
Likes: 0
From: Ontario Canada
What else to replace when replacing transmission?
Hey guys, just bought a zf6 from this forum. Should be going into the car by the end of the month. Just wondering what else should be replaced while the transmission is out. I will be having a shop do the work, I am 19 and not experienced enough to tackle the majority of these tasks. I will be getting a new flywheel, clutch, and throw out bearing. My car has 130k miles on it, new transmission has 90k. I do not have the majority of the service history, only the last two years. If anyone has any recommendations on which clutch/flywheel/throw out bearing to buy that would be great. I have been recommended this flywheel
https://www.rockauto.com/en/moreinfo...t=5348&jsn=648
And this clutch
https://specclutch.com/product/sc421zs/
Not sure what else I need however. I've also been told I need to get the flywheel resurfaced to match the stock one, not sure how to organize doing that with the transmission shop as they are a pain to contact.
Any help would be great, thanks
https://www.rockauto.com/en/moreinfo...t=5348&jsn=648
And this clutch
https://specclutch.com/product/sc421zs/
Not sure what else I need however. I've also been told I need to get the flywheel resurfaced to match the stock one, not sure how to organize doing that with the transmission shop as they are a pain to contact.
Any help would be great, thanks
Burning Brakes
Joined: Jun 2022
Posts: 845
Likes: 212
From: Florida
I would caution you to really investigate this flywheel/clutch setup you posted. I would call Spec and ensure the flywheel will be a good match for their clutch.
If you can afford it, I would buy a complete set from Spec or Ram.
I just retrofitted my 96 with a Ram hydraulic clutch setup, which includes the hydraulic bearing and lines, flywheel, disc and pressure plate. I rather spend a bit more than piece a system together.
Also, understand this: When the factory flywheel (dual mass) comes off and a single mass flywheel goes in, you will more than likely have a very alarming and annoying rattle coming from the transmission. It's called counter shaft "roll-over" noise. The experts say it causes no damage, but it does make the car sound cheap. A way to alleviate this noise is to use a thicker shim on the countershaft...you can buy it from Carolina Clutch. You can only swap the shim while the tranny is out. I did, but I don't know whether it made a difference since I replaced the clutch system and the shim all at once.
Hope this helps you some.
Ric
If you can afford it, I would buy a complete set from Spec or Ram.
I just retrofitted my 96 with a Ram hydraulic clutch setup, which includes the hydraulic bearing and lines, flywheel, disc and pressure plate. I rather spend a bit more than piece a system together.
Also, understand this: When the factory flywheel (dual mass) comes off and a single mass flywheel goes in, you will more than likely have a very alarming and annoying rattle coming from the transmission. It's called counter shaft "roll-over" noise. The experts say it causes no damage, but it does make the car sound cheap. A way to alleviate this noise is to use a thicker shim on the countershaft...you can buy it from Carolina Clutch. You can only swap the shim while the tranny is out. I did, but I don't know whether it made a difference since I replaced the clutch system and the shim all at once.
Hope this helps you some.
Ric
