617 starter in a 616

[gatorblue92]

Has anyone ever replaced the starter in a OM616 with the starter from a OM617A? I remember someone talking about it a number of years ago but I cant seem to find the thread now. I almost got stranded at work last night because I decided to drive the 240D to work and was there till 8 and it was much colder than I was expecting so I had issues getting the car started. Most of the issues are due to me not preforming a valve adjustment last summer when I should have but the starter began making noises like the bendix was failing right when I finally got it going. I am already planning on a valve adjustment before I drive it again since it is way overdue and thinking about finally taking the plunge and upgrading to the pencil glow plugs. I never had these issues living in the south so now I know how all you northerners feel with your winter starting issues

Long story short would installing a turbo starter in the NA motor help with starting since they are more powerful?

[kerry]

Yes.

[vstech]

same part number... 240/300/300A... only different part is on the CA 85...

[t walgamuth]

The resisitance is one cylinder at a time so same size cylinders equals same starter, unless superceded. I have about four spares so if you need one I can supply.

they seldom wear out though.

[Simpler=Better]

Originally Posted by t walgamuth

The resisitance is one cylinder at a time so same size cylinders equals same starter, unless superceded. I have about four spares so if you need one I can supply.

they seldom wear out though.

And when they do it's a whopping $15 for new brushes and a new carrier.

[qwerty]

Originally Posted by t walgamuth

The resisitance is one cylinder at a time so same size cylinders equals same starter...

You might want to put a little more thought into that theory. A four-cylinder engine has one piston on the compression stroke at a time. An engine with more than four cylinders has more than one piston on some phase of the compression stroke simultaneously with at least one other piston.

[charmalu]

Originally Posted by qwerty

You might want to put a little more thought into that theory. A four-cylinder engine has one piston on the compression stroke at a time. An engine with more than four cylinders has more than one piston on some phase of the compression stroke simultaneously with at least one other piston.

You are correct, but we don`t know what engine Tom was refering to. He may be refering to the 616?


Iam wondering if when we buy a new to us rebuilt starter from what ever source we get it from, which one do we actually recieve? 616 or 617???
or are what is in the inventory a mix, or are they all 617 starters now???

Charlie

[t walgamuth]

Originally Posted by qwerty

You might want to put a little more thought into that theory. A four-cylinder engine has one piston on the compression stroke at a time. An engine with more than four cylinders has more than one piston on some phase of the compression stroke simultaneously with at least one other piston.

All I know is back when I was driving my 190c fintail, I bought a 220b fintail for parts. I was going to switch the starter figuring that the 220 starter would be more powerful due to the larger displacement. When I started to put in in the car i found the 190 starter was actually noticibly larger than the 220 starter. I always figured it was because of the bigger pistons. I guess a six would have two or more in various stages of compression too by your theory.

So maybe you better tell the MB engineers to think more.

[vstech]

Originally Posted by qwerty

You might want to put a little more thought into that theory. A four-cylinder engine has one piston on the compression stroke at a time. An engine with more than four cylinders has more than one piston on some phase of the compression stroke simultaneously with at least one other piston.

Hmm. I understand what you are saying here, while only one cylinder has maximum compression, one other cylinder is at a minimum beginning to build compression on pro 4 cylinder engines. on a 5 it's extremely low in the compression stroke, but there is SOME buildup on the next cylinder during the 72° of compression. (4 cylinders are 90° spread, 5 cyl would be 72°) and a 6 would be 60, and an 8 would be 45, so only a 4 cylinder engine has exactly one cylinder compressing at a time.
I wonder if 18° of buildup is enough to affect a starter's load?

[Phillytwotank]

Was it making that whirling sound?

[kerry]

Turbo starters are different than NA starters. However, I think most parts places only carry the turbo starters nowadays. If you dig deep enough you can find a different number for the NA starters. There was a thread on the topic about 5 years ago.
When I replaced the starter in my 77 NA with 58k on it with a turbo starter, it definitely spun faster.

[MB-Owner-in-ind]

I tried to replace the starter on my '77 with a turbo and found that the nose was too long.

[kerry]

Originally Posted by MB-Owner-in-ind

I tried to replace the starter on my '77 with a turbo and found that the nose was too long.

Interesting. Mine went right in . Was your engine a 617 or a 616?

[charmalu]

Here is a thread on the same subject.

240D vs 300DT starter motors

Charlie

[gatorblue92]

Originally Posted by Phillytwotank

Was it making that whirling sound?

Yes it was. What does that mean?

I will read through the posted thread as well.