Engine Removal Question

[bgoin]

Originally Posted by 1992 300D

Im not sure. Most likely though.

If you do, are you going to do it or let a shop?

[Zeitgeist]

Those blue streaks on the rod journals are not a good sign--heat, and lots of it. You should be able to mic the cylinders with a taper gauge to determine whether they'll take to simple honing and re-ringing. Having attempted to use a DIY ridge remover in the past, I strongly recommend having this done by a machine shop. Have them professionally mic and hone the cyls while they're at it. The preferred short block refreshing consists of new cyl liners, pistons, and rings, which is big big big $$$. I've successfully completed literally dozens of simple rings n' rod bearing "rebuilds" on VW gas/diesel engines, so theoretically this should also be possible on an MB.

[1992 300D]

Well I have done it before on SBC's so I might do it but I was just out in the garage looking at the cylinders and there is actually really very little ridge so I might now even worry about it. Cause im all about "if its not broke dont fix it"

[1992 300D]

Yea the blue streaks are a bit of concern but I talked to my local machine shop and the guy said it should be fine because it is just a little steaking. He said that if they were bigger he would say replace the crank.

[1992 300D]

The new cam the guy bought. I has 200 miles on it.









Also the new turbo he bought right before the pump went out.



Here is the tool I bought for $6 at oriely auto parts to take the headbolts out.

[1992 300D]

So I found a IP timing gear for $100 shipped to my house with very little wear at all. I posted a wanted here in the site and was contacted by another Mercedes guy. Nothing like saving over $200 and being green by recycling used parts.

Also nothing like waiting on parts to ship! Guess that gives me a bunch of time to clean parts and get things ready to go back together.

[Zeitgeist]

Great! Now would be an excellent time to convert your turbo from a vacuum to pressure operated wastegate. This will allow you to eliminate tons of vacuum related issues down the road.

[1992 300D]

OK. I have never heard of doing that. How is that done? Is there a thread on it?

[Zeitgeist]

This epic thread has a ton of useful info. I chime in at post #349 with the easiest solution, but you do need to have access to the parts. Otherwise, the aftermarket solutions will work just fine. I highly recommend this upgrade to all the 2.5t engines, since it eliminates a lot of headaches which are showing up now on these cars as they age.

[1992 300D]

OK yeah I will look into it. How much would it cost?