[6MTE92]

Originally Posted by redefined

Guess I don't get why people do the RB, isn't it just new internals in stock housings? Nobody out there has larger turbos that bolt on yet?

I think a lot of people would be more inclined to do larger twin turbos than going to stock just because you'd have to replace some of the parts you've already bought, intake, downpipes, etc.

No?

Very simply put, RB's are larger turbos stuffed in the oem turbo frame. They are more efficient/powerful.

[redefined]

Originally Posted by 6MTE92

Very simply put, RB's are larger turbos stuffed in the oem turbo frame. They are more efficient/powerful.

I see. But only reporting 50whp more (according to some posts in this thread)? I'd think that would create more heat issues that bigger housings as well. Probably wrong there. But looks like $3500 bucks for the RB upgrade?

[boostaholic786]

You get more than 50whp with RB's without a question in the world man. Alot of people that have really high dyno numbers on stock turbos+FBO is because they are probably running race gas/methanol/ or E85 mix or all of them lol. Not just regular 93 pump. If your going to try and set a record for 1/4 mile which I personally dont like 1/4 mile runs just because how hard it is on the car ect.. then your going to be running race gas and be FBO (hopefully).

Why havent you installed your DP's on your car yet if they are just laying around the house? RB's basically have bigger and brand new insides with the stock turbos housings. Its like walking into a house that looks sort of nice (not really nice, more like a one two bedroom apartment) but everything inside is state of the art and LED tv's on the wall with granite counter tops ect lol) haha hope that gives you an idea of what RB's are LMAO

[redefined]

Originally Posted by boostaholic786

You get more than 50whp with RB's without a question in the world man. Alot of people that have really high dyno numbers on stock turbos+FBO is because they are probably running race gas/methanol/ or E85 mix or all of them lol. Not just regular 93 pump. If your going to try and set a record for 1/4 mile which I personally dont like 1/4 mile runs just because how hard it is on the car ect.. then your going to be running race gas and be FBO (hopefully).

Why havent you installed your DP's on your car yet if they are just laying around the house? RB's basically have bigger and brand new insides with the stock turbos housings. Its like walking into a house that looks sort of nice (not really nice, more like a one two bedroom apartment) but everything inside is state of the art and LED tv's on the wall with granite counter tops ect lol) haha hope that gives you an idea of what RB's are LMAO

Rofl!

Thanks for the info. I see know by the pics on the RB site. I had read the txt but it sounded like there were just more at out parts. Makes sense now though.

Haven't installed any of my parts because I'm taking it in to have everything looked over first, warranty. I've only owned the car for about 2 weeks, have a garage full of parts and some packages still on the way already!! Haha. Went yesterday and got a baseline dyno so soon ill install everything.

[redefined]

Another thread posted today with mid 400 numbers. Just seems like a lot of money for 60sh hp? Ya I understand that they won't peak as much as stock and will hold the power band but... I dunno. Not sold yet.

[Sered]

Originally Posted by cleex024

i dont understand why you would need upgraded internals when you can run singles up to like 24 psi with stock internals.

please inform me how that works...im not being a smart ass i just really dont know.

Your assumption is correct, there's no incessant need to build a motor to run larger twins; especially when the single kit is doing so well thus far. Lots of misinformation on this forum.

[Sered]

Originally Posted by GOTMH8N

He only used 30-40% E85 too so not fully 50/50. He told me he is building the car to set the 6spd 1/4mi record on stock turbos. Should be an interesting build

I will try to get ahold of his dyno

He needs to work on his tune before he starts working on records. 380whp with an E85 mix on a dynojet sucks. I'd expect that from a mustang dyno as most of the E85-mix cars on this forum are hitting 420-430whp.

[Alpina_B3_Lux]

Originally Posted by rdeterman

as far as i know there is no "upgraded internals" available for the N54

There are upgraded internals available, and a few (but really few) people are also running them.

Pistons are available from CP, conrods and rod bearings from Carrillo, both companies belonging to the Austrian manufacturer Pankl Racing.

Whether you need to rebuild the engine depends on your driving profile. If you use the power only sporadically, i.e. some 1/4 mile races and a few track days on a circuit, then you don't need upgraded internals. However, if you're going to be racing the car with FBO, an aggressive tune and even bigger turbos systematically, I would rebuild the engine. I'm aware of an Alpina B3S Biturbo in Germany that needed a rebuilt engine after less than 30K (km) as it was used to 90% on racetracks or pushed to the limit on the Autobahn (i.e. driving regularly at 300 km/h); it was discovered that the rod bearings started to fail. But this is certainly a very extreme case that is not likely to be replicated, in particular in a country with severe speed limits.

Alpina_B3_Lux

[R1000K3]

Originally Posted by Alpina_B3_Lux

There are upgraded internals available, and a few (but really few) people are also running them.

Pistons are available from CP, conrods and rod bearings from Carrillo, both companies belonging to the Austrian manufacturer Pankl Racing.

Whether you need to rebuild the engine depends on your driving profile. If you use the power only sporadically, i.e. some 1/4 mile races and a few track days on a circuit, then you don't need upgraded internals. However, if you're going to be racing the car with FBO, an aggressive tune and even bigger turbos systematically, I would rebuild the engine. I'm aware of an Alpina B3S Biturbo in Germany that needed a rebuilt engine after less than 30K (km) as it was used to 90% on racetracks or pushed to the limit on the Autobahn (i.e. driving regularly at 300 km/h); it was discovered that the rod bearings started to fail. But this is certainly a very extreme case that is not likely to be replicated, in particular in a country with severe speed limits.

Alpina_B3_Lux

Interesting info. Do you know if the B3S was 400 whp or if the power was raised above the B3S spec?

One failed B3S is too little statistic to base assumptions on, but if it was 400 whp it is a bit worrying, especially for high powered Single Turbos.

[Alpina_B3_Lux]

Originally Posted by R1000K3

Interesting info. Do you know if the B3S was 400 whp or if the power was raised above the B3S spec?

One failed B3S is too little statistic to base assumptions on, but if it was 400 whp it is a bit worrying, especially for high powered Single Turbos.

The Alpina B3 S Biturbo was highly modified. Catless DPs, custom exhaust system including HJS race cats, additional oil cooler, transmission cooler and remap. From the stock 400hp (crank, NOT whp) the car now has about 460hp. From what the mechanic told me the problem were in particular the rod bearings that were not up to the high torque output of the car. But note that it was driven constantly under full load and at very high speeds.

Alpina_B3_Lux