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JuniorB JuniorB is offline
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Default N55 turbo for n52 - 03-21-2016, 09:41 AM

Hi,and hello to all,I've read so much false and Ms information about manifold swapping,what fits and what doesn't. I saw on another site and was very intrigued about a turbo nN55.I know was everyone says,so save it. I have a nN55on a stand but with all the fuel injector problems this is sounding much more feasible. So my question will the n55 manifold, stock intercooler and piping and the new port injection,why couldn't this motor make a solid 400rwh? I know people have thought about it but there is so much good stuff for the n54,and n55 why couldn't it happen. I'm ready to turbo,the nn55is going no were fast turbo is up and coming. Its either this or an engine swap. Help me guys you are all so smart with this.: I'm an excellent tech so labor is not a concern. By the was this site is awesome ,you guys make big power, I'm staying conservative. Sorry so long just excited!!!!
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Peter @ Pure Peter @ Pure is offline
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Default 03-21-2016, 09:43 AM

Pwg n55 turbo have a crappy compressor wheel that is flow limited. Thats why 400 whp on those are tough.


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wgknestrick wgknestrick is offline
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Default 03-21-2016, 09:44 AM

Quote:
Originally Posted by JuniorB
Hi,and hello to all,I've read so much false and Ms information about manifold swapping,what fits and what doesn't. I saw on another site and was very intrigued about a turbo nN55.I know was everyone says,so save it. I have a nN55on a stand but with all the fuel injector problems this is sounding much more feasible. So my question will the n55 manifold, stock intercooler and piping and the new port injection,why couldn't this motor make a solid 400rwh? I know people have thought about it but there is so much good stuff for the n54,and n55 why couldn't it happen. I'm ready to turbo,the nn55is going no were fast turbo is up and coming. Its either this or an engine swap. Help me guys you are all so smart with this.: I'm an excellent tech so labor is not a concern. By the was this site is awesome ,you guys make big power, I'm staying conservative. Sorry so long just excited!!!!
Can anyone translate this to English for me?
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JETmn JETmn is offline
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Default 03-21-2016, 10:36 AM

Like Darkied said, 400whp is not very feasible on the stock N55 turbo. A stage 1 from Pure will get you there though.
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Siren05 Siren05 is offline
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Default 03-21-2016, 11:25 AM

You could get 400 whp with meth on stock turbo
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Turbo_chris Turbo_chris is offline
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Default 03-21-2016, 05:21 PM

Quote:
Originally Posted by Siren05
You could get 400 whp with meth on stock turbo
Not on a PWG turbo. I'm interested in seeing someone boost a N52. The heads are pretty impressive and a local tuner has one making over 270whp NA running strictly off of valvetronic. Large injectors, N55 PWG stage 1 turbo, etc would be a cool project.


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JuniorB JuniorB is offline
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Default N55 turbo for n52 - 03-21-2016, 08:49 PM

Hi all,maybe it was a little confusing,it's not about a n55,its about the n55 manifold on the n52. Let's face it I know this site is all about the n54/n55, so why can't we incorporate the turbo parts on the n52. We all have seen the he thread about the 328. There is so much good stuff coming out lately,I have been planning a n54 swap for a while,but I can't sit well with (can't be done). I just can't justify a supercharger for that kind of dough for little output.can anyone chime in on this? I have seen vendors selling manifold plates,maybe I should start there
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JuniorB JuniorB is offline
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Default 03-21-2016, 08:54 PM

I know I'm new around hear,and not pushing the power, but I'm not afraid to take that uncharted territory,the 5k plus for a single is out of the question. I'm looking for reliable 400hp,e85 no met
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Turbo_chris Turbo_chris is offline
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Default 03-22-2016, 07:18 AM

You're easily looking at a $5k build. Tuning and fuel system alone would easily set you back $1500-$2500. Plus the turbo setup itself. Stock N55 turbo won't get you to 400whp. Turbo is too small. But if you go with a custom turbo manifold you're probably looking at a $8-$10k build when it's all said and done (if you could find someone to tune it.)


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JETmn JETmn is offline
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Default 03-22-2016, 07:45 AM

The N55 manifold has the turbo exhaust housing built in to it, so you can't use just the manifold as-is. Now you might be able to cut the manifold off and put a flange on it. That is something I was thinking about. If you were on the cheap you could put the venerable 20g turbo or a Garrett 50 trim on it. Both would hit 400whp, the 50 trim easily.
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Turbo_chris Turbo_chris is offline
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Default 03-22-2016, 08:11 AM

I think the big issue with using the stock manifold is the funky shape where the runners merge. But I supposed something could be fabbed up to put a flange on it. I would live to see someone boost a N52.

http://youtu.be/6w5OujkxkVI

This vid is of a N52 with the intake manifold cut in half. Throttle body is sitting there for demonstration purposes. Car makes power all the way to 8k RPM's!


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JuniorB JuniorB is offline
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Default N55 turbo for n52 - 03-22-2016, 07:43 PM

Well your right on about the tune ,it's seems most of the turners are dedicated to a certain platform. I've seen the n55 running in the 400 and up range. I see all you guys with fuel upgrading,I don't think I would go with direct injection, I'm looking for modest power,reliable power. I would be scared as hell eveytime I hit the start button, misfires,injectors,logging,it's a lot to go thru to drive a big turbo power,and deep pockets. Even the 5k supercharger is tapped to 350ish. Thanks guys for you input. Don't get me wrong,I love my 5 series with what goodies I have and the juice I just bought
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JuniorB JuniorB is offline
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Unhappy N55 turbo for n52 - 04-08-2016, 07:56 AM

Thanks guys for the reply. I have seen some info the more digging i go. The n55 manifold does have the same exhaust ports,the bolt pattern is different and the turbo is a no go. An aftermarket intake and turbo is the way to go,I can't put 8k into a turbo kit on an engine without liners. The hunt continues, btw there is a gentleman who turbod his 328 with success, so I know the motor is good for 400hp.
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JuniorB JuniorB is offline
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Default N55 turbo for n52 - 04-08-2016, 07:57 AM

Thanks guys for the reply. I have seen some info the more digging i go. The n55 manifold does have the same exhaust ports,the bolt pattern is different and the turbo is a no go. An aftermarket intake and turbo is the way to go,I can't put 8k into a turbo kit on an engine without liners. The hunt continues, btw there is a gentleman who turbod his 328 with success, so I know the motor is good for 400hp.
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