M2 Engine, 2.5 liter

[swift53]

Hello friends,

I finally bought an M3 S14 Engine to transplant into my '02. It is a 2.5 Liter

The engine was purportedly rebuilt, yet being very trusting, I would like to disassemble

the motor and double check everything. Specially, change the rods as they are a very funny

sort, I think the brand is MecHart, did a little digging and appear to be explosive items.

Ceratinly do not want that.

The engine has never run since rebuild, so it woulds be great if someone could refer me to finding a good  dis / reassembly

manual, and ignore if I need to replace the head gasket, as all is new in there.

Thank you!

 

Regards, Alberto

[Preyupy]

I ran Mechart rods in race engines for about 10 years until he retired and closed up the shop.  I think I still have an incomplete set somewhere. 

 

I never had a single problem with them, as a matter of fact I had a customer knock a drive belt off a dry sump pump and make the better part of 1/2 lap with no oil pressure.  All of the rods and main caps were BLUE.  The crank block and rods were junk but the rods did not FAIL. A couple of the rod bolts had welded themselves to the rods and had to be cut off.  The main reason I used them is they were easy to work with and would make me anything I wanted with a reasonable turn around time.  I was experimenting with long rod set ups (this is before the S14 engine came out with the 144mm rods)  and Mechart would make me a set of rods in less than 5 weeks and Corrillo wanted 5 months!  

 

I am really surprised to see those rods,  They have been out of production since the early 90's 

[swift53]

Well, that is very reassuring and very pleased they did you well. Before posting this, I googled Mechart

and there some not very flattering comments, but if you reassure me that it will be allright to keep them,

and after all it is  a street motor, so no craziness on the track, then I will. Of course I will not hold you rersaponsible

Now, as far as taking the engine apart to check all's OK, I really need a manual, I have never done  the M3's.

I really need specs too.

Thank you !

 

Regards, Alberto

[m42002]

I know nothing about Mechart, but they are gorgeous. If they need to come out, I could use one for wall art.

And in an s14, just drooling here. Keep us posted.

[markmac]

Funny, I remember the name (or seeing it listed as part of an engine rebuild spec.....years and years ago).  That is a pretty cool looking connecting rod. Interesting someone used them in an m3 motor, given how long out of production they are.

[Einspritz]

You might want to peruse www.s14.net and get a blue E30 manual for the specs.

 

[swift53]

Thank you all for the tips and information.

 

Will keep you posted.

 

Regards, Alberto

[ray_]

S14power.com should be a good resource as well,. Especially for the carbon fiber plenum you "need"

 

 

Cheers,

[swift53]

Just posted there Ray, thanks

Why do I need a carbon fiber plenum ?

Regards, Alberto

[Preyupy]

BTW where did you get the pictures of the rod and piston out of the engine? That is definitely not a piston out of a 2.5L S14

[ray_]

21 minutes ago, swift53 said:

Just posted there Ray, thanks

Why do I need a carbon fiber plenum ?

Regards, Alberto

 

 

They breathe better

 

.. You called me about 5 years ago talking about this potential project. Glad you are getting around to it!

[swift53]

Yes Ray, good to hear from you! Still too many projects

 

Kind regards,

 

Alberto

[swift53]

7 minutes ago, Preyupy said:

BTW where did you get the pictures of the rod and piston out of the engine? That is definitely not a piston out of a 2.5L S14

 

The photos came from the engine builder / owner...

That is why I want to take the motor apart...

[swift53]

PS. which is the piston that belongs there?

[swift53]

I am also guessing that they re-bored the cylinders, but the crank is still the same?