W115 Purchase - Mercedes-Benz Forum

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post #1 of 6 (permalink) Old 07-22-2016, 09:15 AM Thread Starter
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W115 Purchase

Hello All,

New to the forum and have just purchased a W115 that I will begin digging into this weekend.

1971 220 with 2.2L gas and 4 spd. 76K. USA model.

First order of business is there is some sort of rubbing noise coming from the front belts/wheels area. Not internal to engine. I am planning to go in and tighten down anything down that is loose but was wondering if there is anything in particular I should target first.

Thank you!
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post #2 of 6 (permalink) Old 07-22-2016, 11:52 AM
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Vehicle: 1972 280SEL daily driver. 904 Dark Blue with cognac interior. euro 4.5 engine
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Welcome and congratulations. One recommendation is to fully fill out your profile so on future posts, others will know your car.

So, rubbing noise....while idling or while driving? Speed dependent? Vehicle speed or engine speed? Does it change if you are turning or going straight?

At this point, it could be anything
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post #3 of 6 (permalink) Old 07-22-2016, 12:58 PM
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That noise on my old W115 was the a/c clutch. Slip the belt off to see if it goes away.
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post #4 of 6 (permalink) Old 07-22-2016, 02:30 PM Thread Starter
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Thanks I will fill it out. Figure I'll be searching/posting here quite a bit.

I did some investigation and it appears to be the fan clutch. New one seems relatively cheap from pelican. Not sure if there is a better option, I'm used to using them for an old air cooled porsche.

Now I'm off to search for engine oil reocmmendations. Thank you!
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post #5 of 6 (permalink) Old 07-22-2016, 07:06 PM
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Dump the fan and go with an electric fan.

Change the points set-up to either a Pertronix, HotSpark or the Crane Fireball XR optical trigger.

Chevron Delo 400 15W40 or the Shell Rotella line 15W40. These are both diesel rated oils which have the additives your engine needs.

Use at least the mid-range gasoline blends. RUG will work but the higher octanes will give you a better performance. No need for the premium.

NGK BP6ES plugs work well.

I've got a brand new cap and rotor you can have for shipping cost. I changed to a different ignition set-up so I have no need for them.

Congratulations! Now kiss all that spare time and extra cash you thought you had good bye!

Last edited by Mike D; 07-22-2016 at 07:09 PM.
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post #6 of 6 (permalink) Old 07-23-2016, 02:58 AM Thread Starter
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I don't have any spare time or cash!! This is awesome thank you all. I'll take as much info as I can get.
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