Fitting a M5 engine into a 1995 525i

[sirius_GTO]

My engine has 220K on it and is running super fine like a gem still. I anticipate that it will last until at least 300K. After this is done I am swapping to an M5 engine if that is possible and to a manual transmission. Is this possible?

thanks

[Paul in NZ]

its possible of course but its likely you will need the whole m5 engine and drivetrain incl tranny and diff,not sure you can change diff without a whole new subframe.The m5 and 540 use the large case diff and the gearbox is a whole magnitude heavier .Its why the m5 and 540 is heavier than a 535 even tho the engine itself is about the same weight.This may also lead to different suspension components(ie springs shocks)

[sirius_GTO]

so im guessing I might as well just buy a m5? because I know those parts are not going to be cheap. thanks a lot

id appreciate any more insight into this

[Jon K]

yes you will probably want to just buy an M5. the ecu, engine,diff, trans, radiator, and possibly subframe will essentially be the cost of finding a decent M5

[RobPatt]

...

[Jay 535i]

My plan is to do a tranmission swap to a 5-speed manual, then turbocharge it (mildly, at first).

That will get me M5 levels of power for about $6500, I hope.

Jon, who posted just above, is making M5 power with his supercharged 525. Ask him about it.

[kyleN20]

1993 vr4, thats like a 300gt, or a stealth right? my friend had one and said he couldent find many mods for it, what did you do to get 600hp? sounds sick, AWD?

[sirius_GTO]

oops, sorry for the long reply.

The VR4 is the twin turbo awd version of the 3000GT.

I did a lot of mod but a few are uderdrive pulley, downpipe, intake, catalytic back exhaust (gutted cats in place of a test pipe), MBC, Turbo Timer (not really a mod), twin 13T turbos running at 17 PSI, FIPK, and some other stuff including just a recent transfer case (brand new)...

oh yeah, forgot to mention a 14" FMIC with 3.5-4" piping.

[Jon K]

Don't let Rustam know you intercooled it.

[onewhippedpuppy]

Though there is a member on this board that did an M5 swap, from what he has said it was a huge amount of work. Like everybody else said, you would have to invest the same amount of money as it would take to just buy a nice M5, and when you were done it still wouldn't be the real thing. Just doesn't add up. Here's another idea.
http://www.turbochargingdynamics.com...gistry_BMW.htm
You can get more HP with a turbo kit as others have said, it's a much more affordable route. Still won't be an M5 though.