1963 220Sb w111 fiintail m110 restomod build - Page 3 - Mercedes-Benz Forum

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post #21 of 60 (permalink) Old 10-02-2015, 08:37 PM Thread Starter
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Rrrrrrrrrrrrrrrrrrr!!!! @@#%^<??>£?<~<er!! There needs to be a save draft on here. My stupid I phone keeps glitching and reloading when I try to post. Dam it. I'll say it tomorrow. ??
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post #22 of 60 (permalink) Old 10-03-2015, 10:22 AM Thread Starter
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Yes 6.3 boxes are 1100 bucks rebuilt, I'm not even gonna bother looking for a used one. I want to do this in the cheap and improve the steering too. Does any know what the turn ratio is in a w108 box? I'm really optimistic about the spline setup being the same on the r/c107,w123 w116 ect. As the w111. They look the same in pictures and Mercedes didn't reengineer things they didn't have to. Just about all the cars from 65-85 have the same rear brakes! The c107 box looks pretty close in dimentions and maybe has one mount hole that lines up. I'm pretty sure I can use the c107 box by either
1. Make a 1/4" plate that bolts to the box and has threaded holes to mount to the car
Or
2. Drill oversized holes in the cars steering box mounting structure and weld in tubes to mount the box to like the original was.
Most cars had a3.5 turn lock to lock box and you can get a 2.75 turn one from a later 560sl.
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post #23 of 60 (permalink) Old 10-03-2015, 10:43 AM Thread Starter
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Quote:
Originally Posted by Fonzi View Post
Looking at the gearing ratios, the 86-93 mustang T5 transmission really does look like it has the ideal gears for this setup, providing slightly lower ratios than stock for the starting / 1st gear. I don't find myself wishing 1st gear had more power in my 1985 280sl with 13.68, rather wishing I didn't have to switch out if first so quickly with my 3.58 rear end. It would be far worse with a 4.08 rear end. It looks like the MB transmissions I have and the getrag 265/6 I have all have higher revving gears, especially in 1st, 3.82-3.98. The 3.35 first gear of a T5 3.35 first gear combined with the 4.08 rear end is pretty damn perfect at 13.67.

[iurl="http://www.benzworld.org/forums/attachment.php?attachmentid=1630393&d=1443794167"]1963 220Sb w111 fiintail m110 restomod build-imageuploadedbyautoguide1443794168.009515.jpg[/iurl]
^^^ my 1985 280sl


http://www.stangnet.com/mustang-foru...ratios.655864/
^^ table with mustang T-5 gearing.

0.68x4.08 = 2.77 for overdrive is pretty damn nice too. You might find yourself downshifting into fourth for any passing, but it will be nice to know you will have that low gear overdrive when you want it.

I was thinking: "let's just bolt up the 4-speed" or "let's try the getrag 265/6, but after reviewing the gears, I'm totally on board with the T-5. Otherwise, I think you are going to be searching for a lower differential ratio somehow, and other than getting another rear end from a 280se 4.5 (3.27?) I'm not sure what you could do. I guess that IS an option and you could use a getrag 265/6.

So... Next step on the drive train seems to be either:
- find a T5 transmission from a factory mustang 86-95, or
- find a 280se 4.5 rear end.

For the steering box, there's a 280se 4.5 parts car not too far, but unfortunately the rear axle is gone already.
It really looks like a match made in heaven. It's a shame the w111 style bellhousing isn't as easy to come by as the 240d/280sl squared off one or I could prob make some money off an overdrive kit for w123 and all the cars that use that type of four speed. I don't think tunnel clearance will be too much of an issue.
The 94-98 mustang v-6 t5 has the same ratios and 300lb/ft torque rating but has a 5/8 longer input shaft which I think will work out perfect with about a half inch spacer/adapter. Down shifting to pass on the highway will be a joy to let that motor sing! And a theoretical 170+ mph top speed to boot.
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post #24 of 60 (permalink) Old 10-06-2015, 01:46 AM Thread Starter
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Looks like I'm picking up a 1973 280Sel 4.5 parts car for the front subframe/ brakes and power steering gear. The black seats look pretty good too. Since I just figured out my early w111 has this crazy remotely mounted power brake booster with single circuit brakes, drum rear solid little disc front, that is all going away. I talked to a tech guy at wilwood brakes today and we figured out that with the w108 brakes( 57 mm dual piston front and 35mm dual rear) the best non power master cylinder would be a 1" bore with a 6-1 pedal ratio. It just so happens that is exactly what my car has. A twelve inch long pedal with the pushrod two inches from the upper pivot. Every time I touch this car it seems to give me good news. Planning and measuring is going well. Money is looking good,I've been selling off things I'm done with and doing side work. Now I need a proper space to build this member of my permanent family!!
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post #25 of 60 (permalink) Old 10-06-2015, 01:50 AM Thread Starter
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post #26 of 60 (permalink) Old 10-06-2015, 05:46 PM
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I have the 1966 200 (W110) and I swapped the 280 rear with disks in, and use the stock master. (Dual) Could you just get the master from the 1966 or 1967?

-- brett
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post #27 of 60 (permalink) Old 10-06-2015, 06:38 PM
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This doesn't matter because I don't think anyone is heading down this road, but a getrag 265/6 with a 3.27 w108 4.5 rear end was one possible option. It's clear now that it might be possible, but it would require an adapter plate between the bell and the transmission, plus probably some grinding off on the housing. The adapter plate would probably need two hubcentric flanges to properly mate the two, and would probably need to be about 1/2-3/4" because there are bolts that stick out of the getrag 265/6. All this doesn't take any consideration into the input shaft length of the 265/6. So it might not even be feasible.

Attachment 1636449

I can get better pictures later or tomorrow, but it became apparent that the clutch slave cylinder is too narrow on the back if the 1975 240d bell (assumed the same as the 1981 280se w126 bell) for the getrag 265/6.

So, a little tiny bit of research has been done with parts on hand that are not very likely to be used at all:

1) 240d bell instead of m180 bell. The only benefit to this is that we know the m110 flywheel should fit perfectly because it seems to be exactly the same as the bell currently on the 1981 280se engine and 4-speed.

2) the getrag 265/6 ~0.81 overdrive transmission is apparently narrower than the tremec, so it might possibly work with the rear mounted slave cylinder. It also has the BMW flex disk on the back much like the MB transmissions. And it is right here. Otherwise, it seems like the tremec is going to make more sense.

Anyway, there's a little but of research done there.

More pics tomorrow probably. Too dark now.

.

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post #28 of 60 (permalink) Old 10-06-2015, 07:25 PM
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When you were talking to wilwood, did they have any brake upgrades that would fit? I would love to have vented rotors in the front.

-- brett
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post #29 of 60 (permalink) Old 10-06-2015, 10:23 PM Thread Starter
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Quote:
Originally Posted by bfrymire View Post
I have the 1966 200 (W110) and I swapped the 280 rear with disks in, and use the stock master. (Dual) Could you just get the master from the 1966 or 1967?

-- brett
The late w108 cars are vented discs. Not positive what year they changed but I've been using the rock auto site to cross reference stuff and figure out piston sizes in different calipers. As far as wilwood goes the guy didn't mention any kits but I'm sure they can put something together. I told him I was using factory calipers and he plugged numbers into some thing I guess to come up with a 15/16 or 1" master to be close. I may have to mess with the pedal ratio to find the best compromise of feel and weight. Pre-late 63 or maybe early 64 w111 cars have the clutch master on the firewall right next to the brake master and won't fit a booster at all. The firewall is totally different so later stock parts are a no go. I like the feel of manual brakes better anyway. I'll try to post this video I took of the crazy remotely mounted booster on the single circuit brakes.
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post #30 of 60 (permalink) Old 10-06-2015, 10:27 PM Thread Starter
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No video I guess but here's a couple pics.
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