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Re: W108 Mercedes 280SE diesel conversion project

Posted: Fri May 23, 2014 7:45 am
by pryantcc
Thanks for your kind comments!

The engine fits (kinda). Wohoo!
Last night we dropped the engine in and attached the gearbox to it. The good news is that there's room for everything (just about). The tightest part is fitting the gearbox into the transmission tunnel. The manual 'box is higher towards the prop shaft compared to the auto 'box which came out of the car. That means that the shift mechanism which attaches at the top, rear is going to be tight. It needs modification anyway though, for length, so if required, we can make things more streamlined.

The steering box which I thought might be a big problem and get in the way of the turbo exit and exhaust isnt too bad at all.

Next thing to do is to position the engine as precisely as possible and figure out how to mount it so that it doesn't fall out!
I'll try to get some photos up over the weekend.

Re: W108 Mercedes 280SE diesel conversion project

Posted: Sat May 24, 2014 10:41 pm
by pryantcc
Well, here it is, the "new" engine in its new home. It's only sat there, but it fits in well. The engine bay looks a bit empty but will soon fill up with a battery, air box, computer box and screen washer bottle. the blue shopping bag contains the wiring harness for now!!

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This intercooler pipe had to be sacrificed as it was sitting on the anti-roll bar, I'll just re-route it, or might even get away with squashing it a bit:
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Lots of clearance between subframe and sump:
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And the exhaust clears the steering box:
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It's difficult to get a decent photo of it, but here's the attachment for the shifting mechanism on top of the gearbox. It's pretty tight to the top of the transmission tunnel. That long self-tapper is someone else's legacy! :roll:
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This photo shows the original V8 engine mount and the new, improved wooden version.
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Re: W108 Mercedes 280SE diesel conversion project

Posted: Sat May 24, 2014 11:07 pm
by JPB
Brilliant stuff! At this rate, you'll have it on the road by the end of May. :thumbs:

OK, so who's going to be first to fit an OM660 across the nose of a mini? Daimler-Benz do some superb Diesel engines, it's up to enthusiasts like us lot to fit them into some decent, old cars and I especially want to see a 799cc, 71bhp three cylinder mini that has enough torque to leave a 1275S standing. :)

Re: W108 Mercedes 280SE diesel conversion project

Posted: Sun May 25, 2014 8:15 am
by rich.
your next project john?? :D

Re: W108 Mercedes 280SE diesel conversion project

Posted: Sun May 25, 2014 1:18 pm
by JPB
Nope, it's tiring enough these days just looking at how much hard work Mr pryantcc is putting in on this brilliant project, I'm afraid I just give money to other folk if I want stuff doing now. With a few exceptions. :(

Re: W108 Mercedes 280SE diesel conversion project

Posted: Sun Jun 01, 2014 9:43 pm
by pryantcc
Drive shaft sorted!
The original shaft is used up to the carrier bearing, and it turned out that the splines on the shaft which came with the manual gearbox match it, so my very good friend just shortened the front section of the shaft which belongs to the gearbox. You can see how it was before and how it is now in the photos below.

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Re: W108 Mercedes 280SE diesel conversion project

Posted: Mon Jun 02, 2014 12:42 am
by bnicho
Loving the work you are putting into this conversion but just looking at the wiring loom gives me a headache!

Cheers,

Re: W108 Mercedes 280SE diesel conversion project

Posted: Tue Jun 03, 2014 12:23 pm
by pryantcc
bnicho wrote:Loving the work you are putting into this conversion but just looking at the wiring loom gives me a headache!

Cheers,
Thanks Brett!
The wiring is actually the part I'm most comfortable with. I'm looking forward to the point when the location of all the components is finalised so that I can get stuck into it!

Re: W108 Mercedes 280SE diesel conversion project

Posted: Tue Jun 03, 2014 4:51 pm
by TerryG
it is too hard not to post this.

You've been shafted (i'll get my coat)

It looks like you are having fun working the little problems out. I suspect that I would have got frustrated by now and walked away.

Re: W108 Mercedes 280SE diesel conversion project

Posted: Wed Jun 04, 2014 8:58 pm
by pryantcc
TerryG wrote:it is too hard not to post this.

You've been shafted (i'll get my coat)

It looks like you are having fun working the little problems out. I suspect that I would have got frustrated by now and walked away.
Nice, Terry!
I do like taking on the little challenges. I'm working on the pedals at the moment. Lots of time upside down in the driver's footwell. Its slowly coming together though. Using all Mercedes donor parts has definitely helped with bits and bobs matching up very conveniently!