How do you replace a timing chain from a Mercedes Benz 1981 380 sl?

Answer 1

If you have to ask how to replace a timing chain, I strongly suggest that you take your car to your local mechanic.

Why?

You don't know how involved it actually is.

First, you need to remove the right side valve cover, that will expose the timing chain. You have to remove the spark plugs. You will have to hand crank the motor until you locate the chain's clip. Then you need the proper tools to remove the clip, and all the while, not allowing the chain to slip a tooth. There's a bunch of other things you need to do as well...like replace the cam chain tensioner, there are also 4 chain guides that you will need to replace as well, which can be a pain in the ass. Did you know about the chain guides and tensioner?

This is the reason for taking your car to your mechanic. However, for a trained mechanic to do the job should take him less than 2 hours...and you would have to purchase the parts anyway...whether you did the repairs yourself or not. So actually, to have your mechanic install the chain should cost you about $150.00 on top of the parts. And, for this $150.00, you won't ruin your engine, and you'll save yourself about 8 hours and countless bloody fingers.

If you're still determined to do this job yourself....get the repair manual, and make sure you have all the parts before your start the job. You should also check the OHC oiling tubes...and replace the old valve cover gaskets on both sides.

It's been a while, but check the cam chain...it should be a double row chain...I think theyt started the double row chains in 1981. All 107 body SL's went to a double row chain...if yours is single row, which is doubtful....you will need to upgrade it immediately...that means replacing all of the chain's gears...3 I think..and that means you have to take the front of the engine apart....and that's a lot of work...TAKE THE CAR TO YOUR MECHANIC!!! Trust me on this one.