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Old 09-20-2017, 09:29 PM
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Join Date: Sep 2000
Posts: 128
Nardi adapter for 1977 SLC

I see Nardi adapters for 72-76 and for 78 to 88 SL and SLCs.

What do I need for a 1977 450 SLC?

Also anyone got one for sale or trade?
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Old 09-21-2017, 12:55 PM
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Join Date: Sep 2011
Posts: 552
72-76 are 15mm spline. 78-88 are 21mm spline. You should determine yourself which you need.

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Past mb: '73 450sl, '81 280slc stick, '71 250, '72 250c, '70 250c, '79 280sl, '73 450sl, parted: '75 240d stick, '69 280s, '73 450slc, '72 450sl,
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Old 09-21-2017, 02:29 PM
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Location: NE Oklahoma
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Yep. Remove you steering wheel and measure the spline. The change happened during the '77 model year. The EPC will show what you have. The break is identified by chassis number (VIN).
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Old 09-21-2017, 02:40 PM
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My 1977 was sold March 7th. Serial number 107044-12-016297

I have the original sales sheet, the build sheet, and the data plate.

Where would I look?

I really don't want to take the like new (34,000 mile) original steering wheel until I have a Nardi and an adapter. I really like to drive this bad boy, very fast for a 1977 vehicle.
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Old 09-21-2017, 11:56 PM
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Posts: 128
Found the best Nardi thread over at Nardi Dilemma - Page 11 - Mercedes-Benz Forum

Looks like the 390 MM would be better than a 360, and I don't have to take the steering wheel off, the 15mm uses a 22 mm socket, the 21 mm uses a 27mm socket. Great info. So all I have to do is take off the "Remove plastic Mercedes center emblem with a plastic tool or a screwdriver; pry under edge" Measure the nut and order adapter.

Every older Mercedes I have had, like the 1969 300 SEL 6.3, has had a Nardi, just like the look.

Last edited by breastroker; 09-30-2017 at 06:17 PM.
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Old 09-22-2017, 04:30 PM
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Join Date: Sep 2000
Posts: 128
That was easy, I have a 22mm nut. But I have a 21, 24 26 and 30 mm sockets and no 22 so off to the auto store.

So much easier than taking the wheel off.

Now I just have to get the 3020 adaptor

Last edited by breastroker; 09-22-2017 at 05:32 PM.
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Old 10-03-2017, 09:53 PM
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Join Date: Sep 2000
Posts: 128
I ordered the 390 mm Nardi, unfortunately couldn't find an old style 3320 adapter so I had to get one of the new accordion looking adapters.

I have a Mercedes Tri Star Nardi horn button, but it looks plain.

I had a spare Nissan Nardi horn button, cut off the top 1/8 inch and glued a 129 Mercedes Laurel hood badge on it. Have to figure how to put a picture here but it looks pretty nice. Just waiting for the JB Weld to dry


Last edited by breastroker; 10-04-2017 at 02:41 AM.
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