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  #1  
Old 05-21-2007, 07:14 PM
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Parts interchange '56 to '66???

hello everyone i'm new to the forum and was wondering if anyone knows if the engine, rear end, and front brakes from a 66 250 sl will swap over to a 56 219, i found the 66 in a pick an pull junkyard and thought it'd be nice to have 4 wheel disc and the larger engine in my 219. thanks in advance for any help
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  #2  
Old 05-21-2007, 07:20 PM
cth350's Avatar
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Location: Long Island, NY
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that's a rather messy change.
But that rear for an SL would be useful in just about any 230sl out there (like mine).

Sure that's not a 250S or SE? An SL parts car would be a great thing to have on hand.

-CTH
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  #3  
Old 05-22-2007, 10:38 AM
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oh sorry about that, don't know why i put sl, yes it would have to be an s or se, it is a 4door sedan
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  #4  
Old 05-22-2007, 11:01 AM
John Holmes III
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Greetings from a fellow ponton owner!


I found out the hard way, in the world of pontons, few, if any, parts interchange with post 1965 cars. Some parts from 1959 to 1965 fintails will interchange.

The rear axle will NOT fit, the housing is different. The front disc brakes will fit, but the drum brake system keeps residual pressure on the brakes to keep the wheel cylinders from leaking, something that will be a problem with calipers.

IMHO, the factory drum brake system works better than most people think, if it set up right. By that I mean fresh self adjusters, and having the shoes arc fitted to each drum. You will never miss the disc brakes.

The transmission might not fit because the tunnel is very small on these cars, and the engine block may bolt in, but the fuel injection won't fit under the hood.

If you are looking for more power, use a dual carb setup from a 1956 to 1959 220S, preferably with a 1956 to 1959 220S distributer and camshaft. It all bolts in, and looks factory.
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  #5  
Old 05-22-2007, 01:09 PM
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john, the car has the dual carb setup now, i also put alu. drums on all 4 wheels, if i could find a rebuild kit for the engine i do have a 61 220s parts car i could rebuild that motor and put it in. the main reason i wanted the 250 engine is just so i don't tear up the 56 motor. i don't plan to keep the car all original, but i don't want to hack on it in case i decide to put it that way when i'm older. i've got a set of the 14" buntant(spelling?) that i plan on cleaning up and using, i have put them on the car and they do fit(i also think they look pretty good too) my tranny does have an issue with popping out or 4th gear going down the highway(i'm thinking sycros) i was told however that my 61 tranny should work in my 56. but the biggest problem i have is just finding parts for it any help would be app.
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  #6  
Old 05-22-2007, 03:20 PM
John Holmes III
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Sounds like you have a pretty neat car there. I know, finding parts for these old-timers is getting harder and harder.

My '59 does the same thing with popping out of 4th gear, and it's shame because otherwise, it's a perfect transmission. From what I was told, the tolerances are so tight in these gearboxes, that they will make alot of noise if bearings or gears got changed. I was told to find a used transmission, which I did, on fleabay. Since I don't drive the car much, I haven't gotten around to changing it out. I hope it works ok.

I agree, your '61 trans. should work with your current motor, but I think the bellhousing is different due to the hydraulic clutch used on the '61 models versus the mechanical linkage on your 219.

The '61 220S motor should bolt in, using the front/rear motor mount brackets from your 219, as will the 250SE motor. The problem with the 250SE motor is that the intake manifold won't clear the hood, I wanted to this myself once, and a German factory tech told that it wouldn't fit because of this. Of course, you might be able to block off the injection pump hole, and run the dual carb setup with the 250SE motor.

I imagine the '14 bundt wheels look pretty good, not to mention the better ride and lower engine speed versus the 13" rims.


Regards, John.
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  #7  
Old 05-23-2007, 11:31 PM
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well it's not neat yet, still have some work to do on it, but as far as lower engine speeds with the 14" wheels i was planning on running as close to the factory height as i can get to keep the speed-o right, i'll look at the 61 tranny this weekend. you wouldn't happen to know where i could look for an engine rebuild kit do you??
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Old 05-23-2007, 11:56 PM
John Holmes III
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I wish I could help with engine rebuild kit.

The big expense is going to be in a set of pistons. The timing chain, chain tensioner, bearings, gaskets, ect.aren't too expensive, but the pistons are a big $$$ item. The oil pump can be checked for wear, and reused most of the time.

These people might have some alternatives to OEM pistons:

http://www.egge.com/about.shtml

A good and honest machinist is worth his weight in gold with a project like this, they can usually get individual parts from sources you and I don't know about or have access to. I recently had the cylinder head rebuilt for my dad's 1945 Farmall tractor, and the machinist was able to get all new springs and valves for a much better price than I was finding at the tractor restoration parts places.


You probably know about this group, but just in case:

http://www.mbzponton.org/


Lot's of great info, and some real experts there.

John.
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