intake swap

[bmw15]

can you fit a m50 intake manifoled to a m52 engine? couse im having problems.


thanx

[Pirate_copy]

If i remember rightly (and that is doubtful these days), you can. infact i am sure i have been told that it is the best thing to do to a M52 engine!!

What problems you having matey?

[robisconfusedd]

what kinda problems are you having?? i have an m50 manifold on my m52...

its a great performance mod

[bimmer dot info]

http://www.eurosporthighperformance.com/intakes.html Some of the parts you might need.

[Bimrpwr]

yes you can. with no issues.

[bmw15]

If i remember rightly (and that is doubtful these days), you can. infact i am sure i have been told that it is the best thing to do to a M52 engine!!

What problems you having matey?

hey whats up, i just took off the old one and after doing that i came across the M52 intake has some vacume intake ports that the M50 doesnt have, what should i do about that?

[Crcrzy12]

there are kits you can buy that have everything you need for the swap...check out the link BimmerDotInfo left above

[AW328i]

What kind of power does this mod give?

[Bimrpwr]

it will give you a few HP.

[AW328i]

Is it only worth it if your going FI?

[bimmer dot info]

There would not be much of a differance in power between the intakes on a FI car.

[Ronnaferd]

A friend I met said he got 12rwhp from the M50 manifold swap.

[Derekj]

That's hard to beleive without adding more fuel and a free flowing exhaust.

[Pirate_copy]

the M52 intake only runs at around 65% of the effiency of the M50 intake so some big gains could be made!!

12rwhp does sound a lot but is possible i guess

[bimmer dot info]

The car will add more fuel as needed and the exhaust on a BMW is rather free flowing as is.

[Pirate_copy]

too true

The 328i was restricted on the intake, not the exhaust side of things.

Proper m50 intake and cone filter (i suggest K&N) and you will see big gains.

[Rickman]

[QUOTE=bmw15;2007250]can you fit a m50 intake manifoled to a m52 engine? couse im having problems. You definitely can ! And as stated by many 'festers it will bring more power. Try this link, which should help you. I had a look at this myself and it is certainly doable.

http://www.team-bar.com/diy_m50manifold.htm

[Derekj]

The car will add more fuel as needed and the exhaust on a BMW is rather free flowing as is.

I agree, but lets face facts, when you talk about an extra 12hp your ecm is a little out of its league unless you add a chip. It is designed to allow for a lean condition or rich and compensate accordingly, but by changing out the intake and expecting 12hp more is questionable. It's all a balance, more air in = more fuel = better free flowing exhaust to get more performance. As far as the stock exhaust.......I rest my case. I am not trying to stir things up here but too many people expect too much by changing one thing and don't realise that there is a balance to optimise performance.
Cheers Derek

[Pirate_copy]

I agree, but lets face facts, when you talk about an extra 12hp your ecm is a little out of its league unless you add a chip. It is designed to allow for a lean condition or rich and compensate accordingly, but by changing out the intake and expecting 12hp more is questionable. It's all a balance, more air in = more fuel = better free flowing exhaust to get more performance. As far as the stock exhaust.......I rest my case. I am not trying to stir things up here but too many people expect too much by changing one thing and don't realise that there is a balance to optimise performance.
Cheers Derek

Cant disagree with him here!!! :thumbup:

[bimmer dot info]

non-chipped ecu in an M50 can run with around 5lbs of boost (roughtly a 30ish percent increase in power) without problems. Why would a little extra air from an intake be out of the M52s range?

This intake was designed to be restrictive (here (http://www.bmw-m.net/techdata/m50vsm52.htm) are the numbers). Look at the port size... The gaskets are the same size on both intakes. I dont think anything else on the car, exhaust or cyl head, was designed to be more restrictive than the m50s parts but I havent looked it up.

[Derekj]

Technicaly we agree that there will be a bit of an increase in power but we fall off regarding how much. Simple... Any motor is like a big air pump what goes in must come out. What and how we manipulate it is where it counts..e.g port and polishing, timing, cam lobe, lsa, compresion, valves, fuel, spark, exhaust etc...As you mentioned the intake was designed to be restrictive ....as was the fuel supply, air flow, and exhaust....Now you are taking one component and expecting 12 hp?? It is all a balance. Every bike I build gets a rebuilt brand new motor that I spend hours on. After assembly and installation and break in, I dyno tune for optimum performance. This is why I am a stickler about power gains.

[joel602]

SO do the 97 328;s have the M52 manifold???

[Bimrpwr]

^^^^^ yes they do