Reinforced guibos
Reinforced guibos
Originally on my W124 I had a 185mm diff with a 90mm 6 hole flex disc, the 6 speed manual gearbox had a 110mm 6 bolt one from a CLK. As has been suggested here the 110mm flex discs are very strong and should not fail, the 90mm ones will give up – they are a magnitude weaker.
I did infact build an alloy rubber bushed 90mm flex disc – however in the end I came up with a better plan.
I knew the prop/diff was the weak point in the drive line so rather than mess about (and to be honest if you want to do this properly you need to sort it right first time and unfortunately spend some cash) I fitted a 210mm 2.65 diff with a 110mm 8 hole flex disc and a modified SL500 prop. The SL500 prop has the 110mm flex disc ends AND (often forgotten about) a much larger UJ in the centre. It also has room for a larger centre bearing that JUST fits into the W124 tunnel.
Recon UJ, new CB, cut, shut and balanced I now have a drive line that is silent and vibration free. It’s also upto the 456ft/lbs of the engine.
All in I recon the diff and propshafts upgrade cost £700-800.
Now the drive shafts are the weak points… any experiences/knowledge of alternatives?
NB – I must unfortunately tell you all that DRUK died some months ago. Nice chap too.
RIP Derek.