m50b30 !

[b3albakii]

hello guys can i have some infos about m50b30 swap ?

[DesertBMW]

It is same as M50B25 swap.

[b3albakii]

i have this swap in my car but i want to make my b25 , b30

[DesertBMW]

i have this swap in my car but i want to make my b25 , b30

Take parts out of this block and install in your B25 block. That's it, all parts fit.

[RoadHazard]

What's the gain over the b25?

[Roysneon]

What's the gain over the b25?

.5l

[Poorboyz]

Approx. +50 HP at the crank

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[Roysneon]

Approx. +50 HP at the crank

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That seems like a lot. I'm assuming that's with the addition of cams, headers and a performance s50 chip?

[RoadHazard]

.5l

[Poorboyz]

That seems like a lot. I'm assuming that's with the addition of cams, headers and a performance s50 chip?

2.5L - 189hp
3.0L - 240hp

I believe those are stock numbers. I'm sure someone else with more knowledge will chime in, I'm a noob. I believe the M50b30 was the US M3 engine?

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[Roysneon]

2.5L - 189hp
3.0L - 240hp

I believe those are stock numbers. I'm sure someone else with more knowledge will chime in, I'm a noob. I believe the M50b30 was the US M3 engine?

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No, the US M3 engine in 1995 was the S50b30. It had different cams and engine tuning but was still very much based on the M50tub25. An M50 with the same displacement but 'weaker' cams and a more mild factory tune won't make S50 numbers.

[DREWHALL]

Correct. It is a punched out M50 with more cam, and I'm sure a little tuneage. Head casting is the same I believe.

[b3albakii]

should i upgrade injectors ?
how about your advice guys should i go for it ?

[DesertBMW]

Don't go for it.

[digger]

should gain peak torque in proportion to the change in engine size. lowend will be alot better yo, but without breathing mods the gains in peak hp might not be as dramatic as lower in the rpms