Date registered: Apr 2009
Vehicle: Mercedes 280 SE 3.5 coupe, pagoda 230 SL '64, 500 E W124, CE 220 Cabrio, E 320 T W211, w126 6.0 AMG
Location: Italy, Gemany
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G76/27 A5 Tranny
Yesterday I opened my tranny, the rare 76/27 A5, normaly used in the 300 SEL 3.5 in Europe for the governments cars (less rumor in Autobahn). Some 3.5 Coupe of VIP and some 350 SL (1 known in germany) had it, too. Mine came from down under (gullwing), it was in a 300 SEL 3.5.
I opend it yesterday, and for my surprise ther was all good inside. So I have to change the bearings (SKF or FAG), add a second key on th 5-gear on the countershaft and use roller-cylinderbearings an the countershaft, not the OM-once. Because on the packaging they are roller-bearings but in there are ball-bearings which cannot support the axial forces of the not straight cut gears.
I made som picks.
Next the engine, it had 70000km on the clock but...? I want to lightend the fly-wheel and balance all. The heads have to be ported (anyone experience on this type of motor?) and cut the valve-guides like the AMG-Engines. The inlet manifold will be ported with a steel-ball-guide (38 mm, if I remember wright?) that have to pass in there.
Last edited by pagodino; 01-14-2010 at 11:22 AM.