engine and drivetrain Throw Out Bearing

[caribeblue1600]

So I have a 1968 1600 and I'm pretty sure the throw out bearing is making noise. What're my options?

[danco_]

Well, you could replace the throwout bearing and retain the original 4 speed , or you can take this as an opportunity to convert to a 5-speed transmission.

 

It really depends on how many options you really want. 

[caribeblue1600]

What's the easiest 5 speed to swap in? Or am I better off just doing the bearing?

[Mike Self]

Easiest swap is an 80-83 320 5 speed; the 80/81 gearboxes are generally thought to be stronger than the later ones.  You'll need to shorten your driveshaft; since your '68 has a long neck differential the usual 90mm cut will be different.  You'll also need to get at least the front half of the 320 driveshaft so you'll have the driveshaft guibo flange that will mate with the tranny's guibo.  Any good driveshaft shop can shorten your driveshaft and rebalance it  You'll need to shorten the shifter platform 90mm or so too.  And since your 1600 uses the early style pressure plate (coil spring vs diaphragm) you'll need a different throwout bearing than what's normally used in this conversion.  Check the archives--there are many, many postings on 5 speed conversions--see if you can find some for an early 1600.

 

Installing a 5 speed will really help keep the revs down on the highway--in 5th your engine will be turning over 7-800 fewer rpms at a given speed...much more pleasant on long trips!

 

cheers

mike

[PaulTWinterton]

If you opt to only replace the throw out bearing, you should replace clutch plate as well.

With the later model 02s it is also recommended to replace the pressure plate, as the springs get tired. I'm not sure if the coil spring pressure plate needs replacement.

[Preyupy]

If you convert to the 245/5 od transmission you will also need to change your pedal assembly, you have a mechanical clutch linkage in your 1600 you will need a hydraulic master cylinder to hook to the slave cylinder on the new transmission. 

[caribeblue1600]

Damn this seems like alot of work for a car I bought to mess around with. Guess I found my new project for a while. Thanks for all the info guys.. Keep it coming!

[KFunk]

It is quite a bit of work, and not exactly 'bolt-on' at all.  I like my 5-speed, but it's a lot of work and modification, and it doesn't make the car any quicker.  It just makes it more comfy on road trips and gets better mileage. 

If you just want to run around town with your car on the cheap, then just consider doing a new clutch kit and be done with it.