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6.9 engine rebuild with pics

Started by nathan, 16 July 2017, 10:32 AM

nathan

...
1979 116 6.9 #6436
2018 213 e63
2011 212 e63
2011 463 g55
2007 211 e500 wagen
1995 124 e320 cabriolet
1983 460 300gd
1981 123 280te

nathan

1979 116 6.9 #6436
2018 213 e63
2011 212 e63
2011 463 g55
2007 211 e500 wagen
1995 124 e320 cabriolet
1983 460 300gd
1981 123 280te

TJ 450

Looking very nice,

It's interesting they have the round fader holes. I think I have one sitting around at home somewhere.

Tim
1976 450SEL 6.9 1432
1969 300SEL 6.3 1394
2003 ML500

robertd

H Nathan

this is excellent work,  has inspired me to finish my own 6.9 project,

thank you

robert
116   1978 450SEL 6.9 #  4848
116   1979 450SEL  6.9 # 5884
116   1979 450SEL  6.9 # 6225  SOLD
116   1978 450SEL  6.9 # 5128  SOLD
116   1979 450SEL  6.9 # 5884  SOLD
116   1974 450SEL  DJet

nathan

good one RD, im glad I have inspired you to enter financial destitution!

TJ, I think these are from the two 77s, the dark blue one and the thistle green one we wrecked.  ill either put the old school fader in or a rubber grommet. he couldn't fill them. its actually a better spot than our fader spot on the side of the shifter which is an odd, almost afterthought-like, position I think.
1979 116 6.9 #6436
2018 213 e63
2011 212 e63
2011 463 g55
2007 211 e500 wagen
1995 124 e320 cabriolet
1983 460 300gd
1981 123 280te

nathan

#170
so after the rust repair in the passenger footwell floor, the paint shop inadvertently lost the original rubber insulation that is glued to the floor.  then after I bought another wreck and found a very good condition padding, it got lost too! disappointing but I still needed it.  this padding is the stuff that cracks and retains any water leakage from poor firewall grommets. it then masks any rust beneath it, as you cant see it below this stuff which is glued down.  I managed to find two pretty bad wrecks in the middle of nowhere near our city, and TJ and I checked them out. I got the passenger padding from both of them. the white one was pretty poor, the blue one was all right. I then painted the blue one (even though its not visible) to make it look a bit more respectable and similar to my silver cars natural padding colour. most of the cracks will be covered by the rear ventilation duct so it won't look too bad. it then has the rubber/carpet matt on the top of it before the mats on top of this.  I dont think ill glue it down.  the underside of this stuff is also contoured to your floor pan so this is why this NLA product is important, or your floor mats on top of it won't sit right either if you just glue any old flat padding down!
1979 116 6.9 #6436
2018 213 e63
2011 212 e63
2011 463 g55
2007 211 e500 wagen
1995 124 e320 cabriolet
1983 460 300gd
1981 123 280te

daantjie

Quote from: nathan on 04 March 2018, 09:50 AM
so after the rust repair in the passenger footwell floor, the paint shop inadvertently lost the original rubber insulation that is glued to the floor.  then after I bought another wreck and found a very good condition padding, it got lost too! disappointing but I still needed it.  this padding is the stuff that cracks and retains any water leakage from poor firewall grommets. it then masks any rust beneath it, as you cant see it below this stuff which is glued down.  I managed to find two pretty bad wrecks in the middle of nowhere near our city, and TJ and I checked them out. I got the passenger padding from both of them. the white one was pretty poor, the blue one was all right. I then painted the blue one (even though its not visible) to make it look a bit more respectable and similar to my silver cars natural padding colour. most of the cracks will be covered by the rear ventilation duct so it won't look too bad. it then has the rubber/carpet matt on the top of it before the mats on top of this.  I dont think ill glue it down.  the underside of this stuff is also contoured to your floor pan so this is why this NLA product is important, or your floor mats on top of it won't sit right either if you just glue any old flat padding down!

Nice find. These are very hard to find in decent shape. I got lucky and scored a NOS one for the driver side off of ebay recently.
Daniel
1977 450 SEL 6.9 - Astralsilber

rumb

I bought a caulk gun size tube of white silicone and and tube of black. - one color for each side.  Liberally applying over all cracks and most of the surface and smoothed as best I could with a putty knife at about 1/8" thick or so over most of the surface.  Besides sealing cracks in, it is now also is less prone to future breaking.  still not the prettiest thing, but it is covered with carpet later.
'68 250S
'77 6.9 Euro
'91 300SE,
'98 SL500
'14 CLS550,
'16 AMG GTS

nathan

Geez Dan, a NOS find is lucky! I  dont think it would be too hard to fabricate a poor mans version with some dense foam and cutting tool but still, a shabby old one is better than flat material. 

Rum, not a bad idea. I didnt thin of that, I just flooded it with pain to rot into some of them.  admittedly, it has a crack in the large flat section that wasn't there 24 hours before I bought it (due to me handling it). this stuff gets brittle and as you say, is easily cracked on removal.

it will do the job and cover ups the 6.9 exhaust shield screws sticking through!
1979 116 6.9 #6436
2018 213 e63
2011 212 e63
2011 463 g55
2007 211 e500 wagen
1995 124 e320 cabriolet
1983 460 300gd
1981 123 280te

nathan

and back in.  thank goodness, ive been stuck for weeks with this damn thing out. now I can progress !
1979 116 6.9 #6436
2018 213 e63
2011 212 e63
2011 463 g55
2007 211 e500 wagen
1995 124 e320 cabriolet
1983 460 300gd
1981 123 280te

TJ 450

Most excellent, that's certainly looking the part now.

Tim
1976 450SEL 6.9 1432
1969 300SEL 6.3 1394
2003 ML500

robertd

         
        Good Stuff Nathan
116   1978 450SEL 6.9 #  4848
116   1979 450SEL  6.9 # 5884
116   1979 450SEL  6.9 # 6225  SOLD
116   1978 450SEL  6.9 # 5128  SOLD
116   1979 450SEL  6.9 # 5884  SOLD
116   1974 450SEL  DJet

1783pictures


andrewk

This thread has been incredible useful for getting the right part numbers for hoses and other parts I need to get my 6.9 into a reliable, enjoyable and safe condition - especially in the Australian summer.

Hey Nathan, i'm curious to know two things - what was the part number or source of the correct clear/white braid washer hose? Mine is brown and crumbling like the insulation on the engine bay wiring.
Further to that, where did you get the radiator re-cored? I'm going to get the borescope into mine and run a flush through it first - actually, the cooling system has been well maintained and the coolant is free from contamination.

Thanks again for the information and helpful post - A

1979 450 SEL 6.9 (#5532) - silbergr√ľn metallic

nathan

Hi Andrew, text me if I dont get back to you in a couple of weeks, currently overseas for the Christmas break (I just cleaned the rental car of all snow and crud!).  the hose number I recall was frustrTig, as the same number first got me black hose, the same number but specific instruction to send me the clear hose with white line got me the correct one!!

The radiator was recored by the local custom radiator guy who has done custom work for me before, when I needed a bigger radiator for a 460 gwagen that had a bigger motor put in it. im not sure if this is technically difficult or not for guys in the know?
1979 116 6.9 #6436
2018 213 e63
2011 212 e63
2011 463 g55
2007 211 e500 wagen
1995 124 e320 cabriolet
1983 460 300gd
1981 123 280te