Engine repair service?? general opinion

[Emory39]

I have an m62B46, and an m54B30 possibly could have an N62B44 and an m64B44 that I could repair and sell as a rebuild with a core fee ( that way, I could keep one in stock to cut down on the car downtime). Everything would be replaced with OE/OEM parts. The cost will vary on the engine, of course. I'm not sure of the price as I need to look up what it will cost me to buy a complete kit to rebuild.

Back story:
I have been working on BMW since 2011, and now I have another primary job but still work on BMW on the side. I have extensive knowledge of M52, M54, N62, and M62. I have worked on other engines but have not done a complete disassembly on others. Other engines are n52,n54,m42, m60, s52, n63,s14, s62.

Let me know your opinion.

Thanks
David G,

[80stech]

The Achilles heel with rebuilding an engine is the machining. Things might be different where you are but I don't know of any machine shop that can hold tolerances anywhere even close to the original BMW specs.

[Emory39]

Originally Posted by 80stech

The Achilles heel with rebuilding an engine is the machining. Things might be different where you are but I don't know of any machine shop that can hold tolerances anywhere even close to the original BMW specs.

I have done various BMW engine trought my mechanic career. The experience part on them are the pistons and bearings. Depending on the engine. For example bearing for a n62 are between 32-34 dollars a cap. And the pistons rings are also expensive. On a m54 its a different story.

[Effduration]

I can only comment on M54's. I have have rebuilt 3 of them: meaning new rings, crank bearings, etc.

As of now, I don't think you can can sell a properly rebuilt M54 for much of a premium over a used engine which is $500-$900, and to get $900+ I think you would have to guarantee them.

Now I think what you propose is a good idea and what you would end up with would be a near bullet -proof M54 with no oil consumption. It should be worth $900, but wouldn't sell that high as there are still too many used engines around.

Of course this all changes when/if M54's become scarce.

[Emory39]

Originally Posted by Effduration

I can only comment on M54's. I have have rebuilt 3 of them: meaning new rings, crank bearings, etc.

As of now, I don't think you can can sell a properly rebuilt M54 for much of a premium over a used engine which is $500-$900, and to get $900+ I think you would have to guarantee them.

Now I think what you propose is a good idea and what you would end up with would be a near bullet -proof M54 with no oil consumption. It should be worth $900, but wouldn't sell that high as there are still too many used engines around.

Of course this all changes when/if M54's become scarce.

right, I would have too look at what is the cost of parts and machine as it is more expensive than buying a used one and strait swapping them.