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1986 560SL with M120 V12 Engine, 1988 560SL Stock
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Fenders are the same.....I wasn't talking rears.

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That makes more sense. I always figured I could get a 10" wheel in the back at about 0 offset with a hair of clearance on inside and outside. That means an 8" wheel would allow for -25. I think everything is the same up front for the SL vs SLC. may be some changes in the back. Also there are changes up front between gen 1 and gen 2. but for wheel fitment the differences appear to be slight.
 

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Outstanding Contributor, Vintage Moderator
450slc5.0cab 280sl5sp 280se4.5 500seAMG +250seStkW108 350sl4spdX3 500secEuro 300sel5spd R+C107galore
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Also there are changes up front between gen 1 and gen 2. but for wheel fitment the differences appear to be slight.
I agree, but the fact is that I don’t understand the changes well enough to know whether there is any difference at all in:
  • track
  • scrub radius
  • etc.

I know one interesting thing about the rear of an r107:

245/50/16 on 9x16 et10 fits fine with very little room for error.

245/50/16 on 10x16 et11 rubs the sidewall on the inner fender too much to fit.
 

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Premium Member
1986 560SL with M120 V12 Engine, 1988 560SL Stock
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13,039 Posts
I agree, but the fact is that I don’t understand the changes well enough to know whether there is any difference at all in:
  • track
  • scrub radius
  • etc.

I know one interesting thing about the rear of an r107:

245/50/16 on 9x16 et10 fits fine with very little room for error.

245/50/16 on 10x16 et11 rubs the sidewall on the inner fender too much to fit.
Did you try this on a gen 1 or gen 2 car. I forgot the tire profile and ET, but I did have 275's on the stock 18" x 9.5" AMG 129 wheels for a while with no issued. If I recall no spacers either.
 

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Premium Member
1986 560SL with M120 V12 Engine, 1988 560SL Stock
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Fonzi you had a thread on here somewhere about wheels that fit both front and rear. I believe my 18" AMG with 275's are in that thread. Can you find it.
 

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Outstanding Contributor, Vintage Moderator
450slc5.0cab 280sl5sp 280se4.5 500seAMG +250seStkW108 350sl4spdX3 500secEuro 300sel5spd R+C107galore
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Fonzi you had a thread on here somewhere about wheels that fit both front and rear. I believe my 18" AMG with 275's are in that thread. Can you find it.

I think a lot of people have fit 10x17 et17 amg Oz 3-piece wheels with 275 tires, but have noted some rubbing. I can’t recall the profile number.

I know that I got a set of 10” OZ that had 265 ? 17 tires and were on an SLC. They were certainly smaller than the 275 that lots of people run on w126 which can fit much more than a 107.
 

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Outstanding Contributor, Vintage Moderator
450slc5.0cab 280sl5sp 280se4.5 500seAMG +250seStkW108 350sl4spdX3 500secEuro 300sel5spd R+C107galore
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24,300 Posts
Did you try this on a gen 1 or gen 2 car. I forgot the tire profile and ET, but I did have 275's on the stock 18" x 9.5" AMG 129 wheels for a while with no issued. If I recall no spacers either.
Gen1 cars only. Never had a driving gen2 107 myself.

Post 13 here with a YouTube video

 

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1986 560SL with M120 V12 Engine, 1988 560SL Stock
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13,039 Posts
Thanks first link in that thread with the 8.5 front and 9.5 rear 245/40ZR18 front and 275/35ZR18 rear, And JoeB is running 17" x 10" in the rear but he didn't state the ET.


Was pretty close in there but in the end I didn't need to roll the fenders because the wheels arc inward when the suspension compresses. I know my front wheels had an ET of 25 and required a 15mm spacer. I don't recall the ET on the rear but I believe it was 18. I recall the clearance on the inside having some room available to go to 10"

Automotive parking light Automotive tail & brake light Automotive tire Vehicle Automotive lighting


Wheel Automotive tire Motor vehicle Hood Automotive lighting


Tire Wheel Automotive tire Motor vehicle Tread
 

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1986 560SL LS swap project, 1981 300D (non-turbo), 2005 S55 AMG, and an old Lexus SUV
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81 Posts
Discussion Starter · #270 ·
Thanks first link in that thread with the 8.5 front and 9.5 rear 245/40ZR18 front and 275/35ZR18 rear, And JoeB is running 17" x 10" in the rear but he didn't state the ET.


Was pretty close in there but in the end I didn't need to roll the fenders because the wheels arc inward when the suspension compresses. I know my front wheels had an ET of 25 and required a 15mm spacer. I don't recall the ET on the rear but I believe it was 18. I recall the clearance on the inside having some room available to go to 10"

View attachment 2723929

View attachment 2723930

View attachment 2723932
Lord have mercy, those clearances. Good work. Looks like I have a few things to work on before mine will fit nicely.

I'll be taking a look over the wheels soon. These last few days have been engine building days though.

Heads were finished up (had a lot of fun with compressed springs launching caps across the workshop)
Gas Auto part Motor vehicle Engineering Machine


Tonight was the brunt of the actual engine work for the top end. I did the heads, head bolts (lot of wrestling there), push rod adjustments, rocker arms, ran the engine through a few rotations, and then topped it off with the valley cover and valve covers.
Motor vehicle Automotive tire Musical instrument Gas Engineering
Automotive tire Hood Electronic instrument Motor vehicle Office equipment



And here we go!
Motor vehicle Automotive design Bumper Automotive exterior Engineering



Engine just needs a few odds and ends, and then I'll be making a cardboard model of it to do test fits in the car. I may even get to do test fires on the engine stand.
 

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1986 560SL LS swap project, 1981 300D (non-turbo), 2005 S55 AMG, and an old Lexus SUV
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81 Posts
Discussion Starter · #273 ·
You might consider one of these. Usually available used on E-bay especially for the SBC.
I considered one of those, but damn they're expensive. I'm only going to need it for this project, so I think I'll take my time and make a model out of cardboard and duct tape.
 

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Outstanding Contributor , Bob's Your Uncle!
83 280 SL- 5 speed-The PIG
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95 SL600
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480 Posts
Or maybe a lump of styrofoam and carve it to shape
It needs to be really accurate, cardboard or foam cut out will definitely cause large issues when the real engine is put in place. Even if he buys the mock up, he so going to need to pull that oil pan, front cover, valve covers intake and all to get the proper dimensions. Then he will need an empty transmission case, I don’t think the plastic mock will enjoy a loaded one?
Either use the engine and trans you are going to put in there, or if you would like to buy all the parts needed to do the mock up. This isn’t a horse shoe and hand grenade game, but a game of fractions of an inch snd correct drivetrain geometry. Starting this project out of those boundaries will snowball quickly. Paper and homemade foam will only get you in the ballpark, not in the game.
 

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1986 560SL LS swap project, 1981 300D (non-turbo), 2005 S55 AMG, and an old Lexus SUV
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81 Posts
Discussion Starter · #278 ·
It needs to be really accurate, cardboard or foam cut out will definitely cause large issues when the real engine is put in place. Even if he buys the mock up, he so going to need to pull that oil pan, front cover, valve covers intake and all to get the proper dimensions. Then he will need an empty transmission case, I don’t think the plastic mock will enjoy a loaded one?
Either use the engine and trans you are going to put in there, or if you would like to buy all the parts needed to do the mock up. This isn’t a horse shoe and hand grenade game, but a game of fractions of an inch snd correct drivetrain geometry. Starting this project out of those boundaries will snowball quickly. Paper and homemade foam will only get you in the ballpark, not in the game.
The “model” I’m making is purely to align the bottom end with the subframe to get rough measurements for wiring and mounting. The actual cutting and welding of the motor mounts will be done with the actual engine in the chassis.
For the transmission, I’m cutting the tunnel wide open (tremec T56 dimensions) and going to work the CD009 into that. The mounts for it will be made with everything being held in place and marked. Lots of photos will be taken of the stuff so I can get it right.

Also, for seats, I’m likely going back to the original seating for this chassis. I’m going to be looking for other good condition R107 seats. I sat in an excellently kept 380SL today, and it was worlds apart from the condition of this 560. I’m assuming the mechanical bits are just extremely rusted for this car, since it couldn’t adjust either side, and the springs feel busted.
 

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‘83 380SL
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1,468 Posts
I’m still following along. Can’t wait to see how it fits in the car.
I’m so close to just saying screw it and going with an LS as well but utilize the AR5 out of a colorado since I would only aim for 350HP or go automatic with a regular ole 4L60e
 

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Outstanding Contributor , Bob's Your Uncle!
83 280 SL- 5 speed-The PIG
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32,775 Posts
When I got into the 107 SL world 17 years ago....lots of spare OEM parts, lots of cars that were parting out lots of support.

The longer we own them the more transplants will take place. I want to see this project continue and anyone else that's keen on transplanting.

Fuck....finding anything for a '67 Mustang is a breeze...but I highly doubt the same effort will be put in for our SLs aftermarket wise.

Just ask the Djet guys.

Carry on...all of you!

Me...I have no horse in the race...I have a spare engine and all sorts of parts that I accumulated over the years.
 
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