Author Topic: 250 engine re-build  (Read 22810 times)

w113dude

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Re: 250 engine re-build
« Reply #25 on: October 13, 2009, 17:01:43 »
I wonder when I get done rebuilding my 250 engine, how close it would come looking like this? Can't wait, right now It's all apart.

Shaun

pj-tigger

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Re: 250 engine re-build
« Reply #26 on: October 13, 2009, 21:37:41 »
I built the engine stand a couple of months ago to take a M-100 engine that i'm going to re-build, it still needs finishing & the locking mechanism needs re-designing as it dos not work as intended. The ides was that i can just make different arms to suit whatever engine i'm working on. I've an aluminium Maserati V8 to build & i was not happy about using a conventional stand hanging the engine from one end so a built the stand to suppport then engine centally.

Glad you all like the engine & i'll continue to post pics

mbzse

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Re: 250 engine re-build
« Reply #27 on: October 13, 2009, 22:46:07 »
Nice engine stand!  That style is unusual.  I see it works well, and  you can also install the flywheel and/or the clutch assembly with the engine still on the stand.  It looks like you made some custom brackets
Actually, as the Pagoda engine is not all that heavy, one side support suffices.
I enclose some views of my stand, and the single support bracket custom made can be seen there.
The basic as-is engine stand is illustrated as well, for clarity
BTW, operations on the pictures are measurement of crank main bearing support journals, and measuring straightness/throwout of crankshaft

Quote
Also, looks much better in black!
I certainly agree to this. Now, block is conforming to what it looked like at delivery from factory

/Hans in Sweden
« Last Edit: October 13, 2009, 22:52:43 by mbzse »
/Hans S

66andBlue

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Re: 250 engine re-build
« Reply #28 on: October 14, 2009, 03:27:41 »
Hello Hans,
please post a picture of the custom made support bracket.  Or diagram with the dimensions - that would be really nice to have.
Thanks!
Alfred
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Mark280SL

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Re: 250 engine re-build
« Reply #29 on: October 16, 2009, 00:55:52 »
Great post pj-tigger very interesting and and informative, love the photos....  your workmanship looks excellent, beautiful job.

Glad you painted the block back to black too!
Mark

Benz Dr.

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Re: 250 engine re-build
« Reply #30 on: October 16, 2009, 01:35:09 »
Every now and then I pick up a good idea around here. That engine stand bracket is one of them. I've been building everything on top of a heavy steel table but I can see where that could be easier.

 
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mbzse

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Re: 250 engine re-build
« Reply #31 on: October 16, 2009, 17:25:24 »
Here is a view of a M129 (250SL) engine being test-assembled
As can be seen, using the custom bracket and the as-is stand makes the engine quite accessible, including flywheel/clutch area.
Block can be swung around any position 360 degrees, for crankshaft and other assembly work, just as pj-tigger's design
/Hans in Sweden

Every now and then I pick up a good idea around here. That engine stand bracket is one of them. I've been building everything
on top of a heavy steel table but I can see where that could be easier
« Last Edit: October 16, 2009, 18:16:57 by mbzse »
/Hans S

waqas

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Re: 250 engine re-build
« Reply #32 on: October 16, 2009, 17:54:23 »
Very nice stand, Hans.

So, is it simply a thick steel plate (with four holes for mounting to the block) welded to a thick pipe (same size as the existing stand 'axle') ?

Or did you simply cut down the existing flange on the original stand until it was just right for the mount arm position on the block? (again, with four holes for mounting to the block)
Waqas (Wa-kaas) in Austin, Texas

mbzse

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Re: 250 engine re-build
« Reply #33 on: October 16, 2009, 18:09:40 »
You have it precisely.  :)  Pipe has same outer dia as the existing for the stand, and thick mounting plate is welded to pipe end, like a "T"
Plate has two of the four mounting holes slightly oval, so it can be fitted on left or right side of block.
(M-B made c-c measurement different left and right, so the alloy engine bracket (arm) fits only on one side)
/Hans in Sweden
 
Very nice stand, Hans.
So, is it simply a thick steel plate (with four holes for mounting to the block) welded to a thick pipe (same size as the existing stand 'axle') ?
« Last Edit: October 16, 2009, 18:11:45 by mbzse »
/Hans S

pj-tigger

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Re: 250 engine re-build
« Reply #34 on: October 18, 2009, 19:30:19 »
Just a few pics of progress




menesesjesse

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Re: 250 engine re-build
« Reply #35 on: October 19, 2009, 16:16:26 »
Be sure to use the fiber gasket behind the waterpump housing on one of the bolts or your sure to have a oil leak.  I believe it is the top right one.  someone will correct me if i am wrong
Jesse
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glenn

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Re: 250 engine re-build
« Reply #36 on: October 19, 2009, 17:09:11 »
A little more detail----?   Is the large gasket on the water pump not sufficient?  Another separate gasket required on a single bolt?


Be sure to use the fiber gasket behind the waterpump housing on one of the bolts or your sure to have a oil leak.  I believe it is the top right one.  someone will correct me if i am wrong