The stock getrag manual transmission is perfectly fine for engine swaps. Obviously, you will need to install a manual flywheel and clutch onto the donor engine. If you're doing a 6cyl swap, you'll want to upgrade to the appropriate flywheel/clutch setup. If you're swapping in another M42/M44, your current setup will work, but I always advise people to install a new clutch while the transmission is off. The flywheel should also be carefully inspected for wear and replaced if necessary. You could purchase an aftermarket lightweight flywheel for less than an OEM dual mass flywheel. Using your manual Getrag transmission, will allow you to use your stock driveshaft. The only time people need to change their driveshaft is when they switch to a ZF transmission or from auto to manual. The ZF transmission is about 1.5-2" longer than the getrag and the transmission output flange uses a larger bolt pattern and flex disc than the ti's driveshaft. When people install ZF trannies on the ti, they usually use a manual e36 328 or M3 front driveshaft section with the stock 318ti rear driveshaft section. The two sections mate together via a telescoping splined section. It's recommended if you mix and match sections ie, M3 front 318ti rear, that you take both sections to a machine shop or driveline shop and have them balanced as a pair. Sometimes you get lucky and won't get vibration, but if you do notice any vibration at all, you should remove it immediately and have it balanced. You should also use a new center support bearing. |