4.5 V8 into W111 - Page 2 - PeachParts Mercedes-Benz Forum

pedrocamp · #16 02-19-2020, 01:11 PM

see:

Merc Finny mit V8 | Retro Rides

rwd4evr · #17 02-19-2020, 01:26 PM

Quote:

Originally Posted by pedrocamp

Very cool. Good find on that. Nice to see what apears to be stock location booster. I'll have to look at cars to compare and see if it's been relocated to v8 position. Have to agree with commenters on the ronals not working on it though. Wheels are tricky on Finny s and stance is key. Gotta get the nose Down a bit. Enough to level the body line. My plan is custom 3 piece steel wheels with dog dish steelies centers and bbs lips.

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pedrocamp · #18 02-19-2020, 01:33 PM

Check these out, I am considering these in 7 X 15 and 8 X 15 (black) if they'll tuck in and not hit suspension, no stickers:

https://www.corsasteelies.com/wheels

"Finals" as in final drive?

rwd4evr · #19 02-19-2020, 03:08 PM

Had to fix that. It wss supposed to read ronal not final. You can run those steelies but I like the old style not the hole style. And my plan is to make wheels like thier conversion bundts but with original Mercedes steelies as centers so I can run dog dish caps with 16/17" tires. I'm a handling guy. Small wheel tires are getting expensive and just don't have the same grip without race compounds($$$$$). Try finding extreme performance summer tires in 15" for under 75 a piece.

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SwissCheese · #20 02-19-2020, 05:34 PM

Thanks for all the awesome information. I am picking up the 4.5 this Sunday

So far I have gathered that I may need to move the brake booster and the pedal assembly. It shouldn't be too difficult. Maybe relocate the battery to the trunk, since there will be a massive shift in weight from the iron V8. It seems pretty straight forward, and I have most everything I need.
These are the things I am still missing: M116 Manual Flywheel, Clutch Fork, Release Bearing, Clutch, and Pressure Plate.
If anyone has the flywheel or pressure plate fort sale let me know, please...

Could the clutch disc and pressure plate from the I6 work on the V8?
Also, does the rear main seal ever leak on these V8s, since I have easy access I could do it.

Thank You, and I will update as I get the engine and test fit in the car.

801mbz · #21 02-19-2020, 06:36 PM

I have one. I took a 280se 4.5 motor auto trans front & rear end & put it in a 1965 220sb. I did have to move the booster.

fonzi · #22 02-19-2020, 11:41 PM

Yes. I have a 4.5 that needs a rear main seal.

Where did the 4.5 come from? What oil pan does it have on it?

RobertFini · #23 02-20-2020, 12:27 AM

Quote:

Originally Posted by rwd4evr

I don't want to be thread jacking since the w110 build will not be the same as a w111 but I can tell you, I'm building a 67 230 w110 for a customer with a m130 and 4 speed and it's very tight even wirh parts they came from the factory with...

Not to be further hijacking this thread, but for the record, it's a '66 - stay tuned!

rwd4evr · #24 02-20-2020, 02:25 AM

Quote:

Originally Posted by RobertFini

Not to be further hijacking this thread, but for the record, it's a '66 - stay tuned!

Haha!

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rwd4evr · #25 02-20-2020, 02:27 AM

Quote:

Originally Posted by 801mbz

I have one. I took a 280se 4.5 motor auto trans front & rear end & put it in a 1965 220sb. I did have to move the booster.

How did you go about the move?

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Tomguy · #26 02-20-2020, 07:58 PM

I would suggest using 108 4.5 springs as well, due to the weight.

pedrocamp · #27 02-21-2020, 10:40 AM

Tomguy... correct. I was going to try the 4.5 springs on my W110 build but due to lower overall weight compared to the W108 chassis the car may sit too high, actually will likely sit too high for my taste and a handling penalty. Other than the rubber spacers there is no easy way to change perch height so cheap way out is to cut coils, which increases the spring rate or fitting available aftermarket or custom springs to tune rate. I am undecided what to do with third, or cross spring, on rear end. I am interested in trying a Boge hydrocompensator (though pricey), a custom spring alone or a custom but period looking shock/spring combo.

cth350 · #28 02-22-2020, 07:45 AM

If you have the whole 4.5 car available, then you'd be swapping all sorts of things out of it. Compare the steering linkage geometry and make sure you have clearance for the oil pan. Take a good look at the radiator and oil cooler. There are lots of poor ways to handle that.

The front of the v8 driveshaft should fit into tail of the straight 6 one. Unless you are also swapping the rear, it which case keep it intact. Unless your 4.5 is an SEL, in which case you'll be making it 5" shorter and getting it rebalanced.

The exhaust manifolds will be a tight fit. Use a hammer on the frame rail if needed. The transmission tunnel might need the same adjustment.

V8 ignition & fuel injection, not to mention sensors for coolant temperature to control fans. A/C piping.

Yeah, this project will keep you busy. Share pictures.

-CTH

rwd4evr · #29 02-22-2020, 03:35 PM

Quote:

Originally Posted by cth350

If you have the whole 4.5 car available, then you'd be swapping all sorts of things out of it. Compare the steering linkage geometry and make sure you have clearance for the oil pan. Take a good look at the radiator and oil cooler. There are lots of poor ways to handle that.

The front of the v8 driveshaft should fit into tail of the straight 6 one. Unless you are also swapping the rear, it which case keep it intact. Unless your 4.5 is an SEL, in which case you'll be making it 5" shorter and getting it rebalanced.

The exhaust manifolds will be a tight fit. Use a hammer on the frame rail if needed. The transmission tunnel might need the same adjustment.

V8 ignition & fuel injection, not to mention sensors for coolant temperature to control fans. A/C piping.

Yeah, this project will keep you busy. Share pictures.

-CTH

W111 and w110 center bearing is not in the same location realative to the axle in w108. And the w110 wheelbase is shorter. There's a build from years ago with a 4.5 in a w111 and he cut the floor up and swapped in the w108 section. Rad and oil cooler is a problem since in a w110 6 cyl the rad actually is inside the core support not behind it. There is no oil cooler. I'm tryi g to figure out where to put one on the car I'm building the 6 cyl has a water to oil exchanger that is kinda pointless since it just makes the oil as hot as the engine. It's possible to put it in front of the rad but if you run electric fans it will be an issue.

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SwissCheese · #30 02-25-2020, 11:11 AM

I got the engine this Sunday, and the entire engine wiring harness and relays, ecu, map, etc.
One spark plug hole is a bit weird, will chase it this week, and another is completely stripped and I will have to Helicoil it. I discovered that while removing Resistor spark plugs

I will also adjust valve clearance this week.
My plan is to just change the cam oilers and valve cover gaskets and spark plugs for now, and then drop the engine in and get it running. The bell housing should be here soon.

Could the clutch disc and pressure plate from the I6 work on the V8?