[TheSt|G]

Originally Posted by hassmaschine

you're missing the point. We have vanos, so you can adjust the overlap and peak timing to keep the low end torque. Most of the reason a "big" cam typically loses torque is because the extra overlap causes intake charge to go out the exhaust at lower RPM. Since we have VANOS, that's not really an issue.

yes, N52s run at 5 bar.

I'm not even sure why you are bothering.

[dahaker]

Originally Posted by Blindside_137

My shop in NC is starting a turbo N52 project.

I can PM you their info.

Damn, and I just moved from Raleigh! haha would've be nice to compare my SC numbers to that turbo setup face to face.

[Blindside_137]

Originally Posted by dahaker

Damn, and I just moved from Raleigh! haha would've be nice to compare my SC numbers to that turbo setup face to face.

I haven't heard anything yet on the project so it is either no longer in the works or still has a ways to go. But Bimmer Performance Center is the shop, great place.

[GTRZilla]

what somebody actually needs to do is start making forged internals for n52. Then make a turbo kit, cheaper than ESS SC.

[justpete]

Originally Posted by GTRZilla

what somebody actually needs to do is start making forged internals for n52. Then make a turbo kit, cheaper than ESS SC.

Already available. It's called the 335i, easy peasy.

[hassmaschine]

Originally Posted by GTRZilla

what somebody actually needs to do is start making forged internals for n52. Then make a turbo kit, cheaper than ESS SC.

A forged crank is going to be like $1k at least. Then you need rods, pistons, and likely pay to have it put together properly. Thats not going to be cheap.

You could probably put n54 internals in an n52 block... But, you could just buy a 335i and have a block made for boost.

[631twentyeighteye]

Now that i'm driving an n54 I actually came to appreciate the n52 more. The only thing i've done is a tune on it and it's much quicker than the n52. However stock for stock i think my 128i with bolt ons and tune was just as fast as this e93 335i was bone stock. 128i was 3250lbs on the regi and the 335i is a couple pounds shy of 4000lbs so they're pretty drastically different in that regard.

I miss the high revving nature of the n52 but the grunt all over the power range of the n54 is amazing for daily driving.

[papajetta]

What benefit is there to posting soo much negativity on this thread? Do the "just get a 335" guys really think that a post like that is a real contribution to this. I wonder if people listened to the "just get a e46" or the "just get a m3"..... Wonder if there would be any e30 s54 swaps out there?

[mmmnot]

Originally Posted by papajetta

What benefit is there to posting soo much negativity on this thread? Do the "just get a 335" guys really think that a post like that is a real contribution to this. I wonder if people listened to the "just get a e46" or the "just get a m3"..... Wonder if there would be any e30 s54 swaps out there?

Because there has been a lot of explanation and debate over this topic. The block is chemically different from the N54/5. It will not handle boost well. For the price you invest VS. the risk you have at failure is simply not practical nor logical.

I'm still iffy on the SC kit for the N52. I'm more concerned about reliability and longevity VS. short lived quickness.

[hassmaschine]

Originally Posted by papajetta

What benefit is there to posting soo much negativity on this thread? Do the "just get a 335" guys really think that a post like that is a real contribution to this. I wonder if people listened to the "just get a e46" or the "just get a m3"..... Wonder if there would be any e30 s54 swaps out there?

because it's idiotic.

I'm an N52 fan and even I can see that. the N54 is the factory answer to "hey, I wonder what would happen if we added a turbo to the N52?". You can literally buy a 335i for less than the cost difference it would take you to build a reliable, powerful turbo setup. they just aren't that much more expensive.

This is one of those questions that if the person is asking it, then the answer is no - they can't do it. There are people with the knowledge and resources that could pull it off (with a lot of money), but they aren't going to post a forum thread like this asking if it was possible.. they'd just do it.

Looking more and more at N52 internals, I wouldn't go beyond what is being done with the supercharger. The N52 ring lands are much smaller than the N54s, they aren't going to take a lot of punishment before you break a ring and then your engine is toast. The rods are also significantly lighter. It is built to do the opposite thing from the N54 - high RPM power vs low RPM grunt.

I'm pretty sure the pistons will fail long before the block.

[justpete]

Originally Posted by papajetta

What benefit is there to posting soo much negativity on this thread? Do the "just get a 335" guys really think that a post like that is a real contribution to this. I wonder if people listened to the "just get a e46" or the "just get a m3"..... Wonder if there would be any e30 s54 swaps out there?

The N52 won't support FI at any useful boost level since it's not sufficiently mechanically robust. Ain't gonna happen. Ever.

If you have a non-turbo 3 series and you want it to be a turbo 3 series, buy one cuz you ain't gonna make one. That isn't negativity, it's rationality.

[Delta0311]

The crankcase of the N52/N51 is a mix of magnesium and aluminum. It was designed that way to make it a light weight motor. Its magnesium block puts it at a disadvantage when it comes to boost. The N52 was simply not designed for FI, which is why BMW built the N54/N55 motors. Leave it NA unless you really want to blow your engine.

[hassmaschine]

you can say it over and over but they will not listen. lol.

better off to build a high RPM N/A race motor out of it.

[justpete]

Originally Posted by hassmaschine

you can say it over and over but they will not listen. lol.

better off to build a high RPM N/A race motor out of it.

That's the plan!

Better to extend its capabilities than try and transmute it into something it could never be. Fercryinoutloud, Carillo makes race pistons for this bad boy...

And, yeah, nobody's gonna listen, they got the FBO disease, but bad. s'ok, they'll figure it out eventually.

[mike-y]

Originally Posted by hassmaschine

This is one of those questions that if the person is asking it, then the answer is no - they can't do it. There are people with the knowledge and resources that could pull it off (with a lot of money), but they aren't going to post a forum thread like this asking if it was possible.. they'd just do it.

This X1000. If you are asking about the possibilities of doing this, then your answer is "buy a 335i". it will save you a lot of time, money, headaches, and more money, and you'll be much happier.

[Tom Droze]

Well, slap me upside the head. . . I just requested a quote from a local shop for the ESS supercharger.

[Mike.]

Originally Posted by Tom Droze

Well, slap me upside the head. . . I just requested a quote from a local shop for the ESS supercharger.

say goodbye to those headers

[631twentyeighteye]

Originally Posted by Tom Droze

Well, slap me upside the head. . . I just requested a quote from a local shop for the ESS supercharger.

I honestly think my ideal BMW would be a z4 or base 128i with the SC kit and a PE exhaust. N54 is certainly much faster but i miss the NA character. That being said i do wish the n52 had more balls and the SC kit will do just that.

God do i miss my 128i.

[3002 tii]

Originally Posted by 631twentyeighteye

I honestly think my ideal BMW would be a z4 or base 128i with the SC kit and a PE exhaust. N54 is certainly much faster but i miss the NA character. That being said i do wish the n52 had more balls and the SC kit will do just that.

God do i miss my 128i.

If you're ever in NJ you should come out for a ride in my Z, which is n52 with headers and tune. Heck if you like it enough you can buy mine lol.

[rich322]

So funny reading this thread, that finished in January 2016 when DigiDon posted his thread about how well his N52 runs with a turbo and 500hp a month later...

[n55jb4]

Originally Posted by rhombus

For all the work that a turbo setup will entail (I have turboed many cars over the years), the issue right now is fuel. Turbo or not, you will be limited to the limits of the OEM injectors, which max out just around 300whp. That is at least a reality for now for the SC setup as well, until/unless we find a suitable larger injector (they are very specific injectors). Without a better fuel option, I wouldnt think it would be worth while to pursue a turbo setup being limited to 300whp. Tuning will be another issue.

Lol what a lie. Turboed many cars lol? I bet biggest mod you did was a blackline tailights lol

[rick100]

Originally Posted by rich322

So funny reading this thread, that finished in January 2016 when DigiDon posted his thread about how well his N52 runs with a turbo and 500hp a month later...

Take a look at the guys saying it was not possible. The n52 experts lol

Just goes to show not too believe everything u read here.

Same guys saying aa tuning was garbage compare to bpc until one of the guys proved both tunes make same max power and similar curve

Just saying...