The W116 Library - The definitive W116 resource!
Started by sutekh, 01 April 2022, 08:32 AM
Quote from: raueda1 on 01 April 2022, 09:29 AMWow, great project! Sadly all I can offer is moral support, it's way more ambitious than anything I'd dare to do. BTW, I'm also in SLC. If you've seem a blue 6.9 driving around (which I do a lot of), that's me. If you need a hand, or just somebody to "advise" from the peanut gallery, drop me a line. I'd love to see the car. Good luck and cheers,
Quote from: Bad Benzo on 02 April 2022, 08:46 AMThis is exciting! I have a '77 280SE, and I love driving it in a spirited fashion, but I find the automatic transmission is just not exciting, even when I put it into L or S. I have a friend with a business in Lebanon who is sourcing me a factory 5 speed for my W116, but I don't anticipate that it will be here in the USA any time soon.I'm interested in following your progress!
Quote from: Alec300SD on 02 April 2022, 10:41 AMI loved the the Laycock de Normanville planetary overdrive on 'Grasshopper', my 1979 Volvo 245DL wagon.Overdrive on demand in fourth with the mere flick of a switch was a treat.Even better was instantly dropping down to forth for passing.Unfortunately, I tore my left ACL years ago so I made the switch from a Volvo manual gasser to MB diesels with automatics.For your intended purpose, one could (possibly) transplant in a used unit from a Volvo manual to convert a standard MB 4 speed manual to a 5 speed manual with overdrive.New aftermarket units ($$$) are available for manuals (and automatics) from https://www.gearvendors.com/index.html.From what I read, my understanding is that their unit could turn a 4 speed manual into an 5-8 speed manual on demand.To reduce engine rpm for his high speed long distance commutes the previous owner of 'Desert Rose' (my 1978 300SD) swapped in a 2.49 final drive differential.The car has lower revs at 65+ mph, but accelerates poorly with the 2.49 differential.I don't take long trips often with 'Desert Rose' so I have just put in a 3.06 differential to address the acceleration issues.I do like the lower noise levels obtained at highway speeds when the 2.49 diffierential was installed.Eventually, after an engine swap, and front suspension rebuilt, I do plan to add in a new overdrive unit to 'Desert Rose'.
Quote from: daantjie on 02 April 2022, 10:53 AMAlso check out Tremec. Pricey though methinks.
Quote from: sutekh on 02 April 2022, 09:00 AMOne thing to keep in mind, is that even the 5spd (which as you know is exceedingly rare) still has a 1:1 final drive ratio. I'd look more seriously at finding one, but it frankly doesn't solve for my biggest concern without an overdrive :/
Quote from: Bad Benzo on 02 April 2022, 07:12 PMAccording to the tech specs, the final drive was .875.
Quote from: daantjie on 05 April 2022, 09:52 AMI think the lack of traction here (no pun intended ) is likely due to the fact that not many folks have done this successfully. So you can be the trailblazer here If you do move forward might be nice to have lots of pics and step by step for the next guy.
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