Category Archives: Mercedes Oldtimer Engine rebuilding

Mercedes Benz 300SEL 6.3 restoration Project

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This is RHD 6,3 #2206 . The engine is incomplete and the drivers side sill/rocker  is rotten but the rest of the car is surprisingly sound but in need of a full restoration .RHD 6.3’s are too rare to part out and i would rather restore this car anyway….. or build a historic racer for weekend fun.

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Mercedes Benz 250SE

IMG_0031it’s a bit hard to see ,but this is a picture of the injection pump where the dipstick screrws in. Oil is pouring out …not a good sign as this means the injection pump is in need of a reseal It’s working well at the moment so it will be sorted out later on. It will just have to drained every 1000 miles.

IMG_0043 IMG_0025The battery is a lot larger than original so i have made the top securing bracket longer.It’s shown here in etch primer to followed by semi gloss black . the somewhat blurry pic is of the option plate ..

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A great score!

For my own 6.3 I needed a new radiator and had thought of eitherr making a newer one out of alloy but then i found this on ebay..

A brand new old stock 6.3 radiator for .  Not $5000 AUD , Not $2500 USD as demanded for a new one but …………. $275.  Still in it’s original box.

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300 SEL 6.3 up and running

A short video showing the 6.3 up and running to check it’as C/O level at hot idle .

Mercedes 280 SE 3.5 ute conversion.

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In these  pictures of the distributor, the inside is full of the damned bicarb which was used to strip the older paint of the cars body before painting.

The distributor will be stripped and overhauled because the bicarb will affect the fuel injection trigger points which are in the lower part of the distributor.

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IMG_0334In this picture it can be seen that the bicarb has infiltrated the igniton wiring.

300SEL 6.3 progress…

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The engine is now together and just needs tuning , after the heads were checked an the tappets adjusted.

IMG_0314The shroud was derusted ,then painted with POR15 gloss black .

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Mercedes Benz 300 SEL 6.3 cylinder Head swap.

IMG_0253A new fuel line has been fitted using the original brackets etc which were in good condition after 40 years…!

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The engine bay needed a clean and after a wash it was revealed to have a few places where the paint had disappeared  because of engine heat . IMG_0261

With the heads off ,a few little things became apparent such as this feed wire for one of the thermal time Switches. A couple of the firewall grommets needed replacing .Missing grommets allow noise,fumes etc into the cabin .

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The Steering box was leaking through that round part on the top part of the

Steering box . A new seal had to made for this and the two copper washers were missing. the cover nut and lock nut were both loose. The oil return pipe on the steering box has also been damaged in the past when some one bent it.

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IMG_0271With the heads off and the engine due for a repaint ,the booster was removed and rust removed . it was then etch primed and primed. The other objects in the picture belong to the 280SE 3.5 ute project..

The car was completely masked up and the engine bay resprayed in the black satin as before.

BUT before the black could be applied and the engine bay was still in primer one or two other jobs need doing.

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The firewall brace on the left hand side was cracked almost right around and had to be welded up.

With the engine bay now painted the heads were fitted ,along with newly plated relay brackets . There is a lot less wiring now the original loom has been cleaned up and things such as a mobile phone loom removed .

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New roof on the workshop!!

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Big Surprise today,Saturday 9/05/15. The roofers finally turned up to repair the damn roof. Because the old one was asbestos sheet,the whole shop had to sealed up while they removed every on top of the building. Amzingly it took only 8 hours to strip the old roof off and fit insulation ,then fit the new Zincalume roof.

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Brilliant light now!.

220SE coupe project update,March 2015

A little progress,the car was placed on it’s wheels for the first time.

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Now i can start thinking about stitching it all together .

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Bracing remains in the car until the “A” and “B” pillars are connected permanently

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Chistmas 2014

Christmas 2014 008 Christmas 2014 007Nothing beats driving a vintage Benz on a long trip.
This year was no exception and I took my 300SEL 6.3 to Gladstone to stay at a relatives and enjoy a bit of seasonal cheer. The car ran great ( except for a blown fuel line which wasted $100 worth of fuel on the road) but I suspect the injection pump ,which I had rebuilt some years ago at great expense ,is running far too lean. how long since exhaust pipes were this color? or are they slipping lead back into high octane fuel?

That’s my 6.3 at Rockhampton where we spent a few hours looking for an RV for a relative.