Turbo comparison S55 vs S58

[Track/S]

Originally Posted by rad_name

The Evo 6-9 RS turbos ran a reverse titanium turbine wheel, but it's a TD05 size wheel.

Getting an RS turbo in good condition is like trying to win lottery, size of wheel is perfect for S58 turbos.



last week I repaired one

[Sedgehammer]

Originally Posted by Track/S

There is little space to do this, it is better to use single turbo

Little space to replace existing chargers, but space for one bigger one? That on it's face doesn't make sense, but like I said i am new to this motor. We are wanting to use one for a swap into a 1993 defender

[Sedgehammer]

Originally Posted by D_SheerDrivingPleasure

Wow. For ahich tractor class do you build? As a young boy I attended a tractor pull at a local Ag center. It was thrilling to see the crowd erupt in cheers at a full pull. Motorsports at it's finest.

Several different actual tractor classes. Not the modified that run racing type engines. We have built single, 2, 3 and 4 charger set ups. Like I mentioned to Track/S, we are considering using the S58 or B58 on a 1993 Defender swap. Just trying to get info gathered on these engines

[Track/S]

Originally Posted by Sedgehammer

Little space to replace existing chargers, but space for one bigger one? That on it's face doesn't make sense, but like I said i am new to this motor. We are wanting to use one for a swap into a 1993 defender

Yes, it is easier to mounted single turbo with 1 dowpinpe, 1 oil pipe.

[n8dgr84]

Originally Posted by Track/S

Yes, it is easier to mounted single turbo with 1 dowpinpe, 1 oil pipe.

Do you know the weight of a single vs twin setup with similar output potential?

[Track/S]

Originally Posted by n8dgr84

Do you know the weight of a single vs twin setup with similar output potential?

I think single with a cast manifold would weigh more, but there wouldn't be much difference either.

[b_w.]

[sly1types]

Track/S What is a good S58 physical size comparison to on S55 turbo options? Close to full race turbos? Pure high flow? or Mosselman in terms of size. arn't the full race s55 turbos about 5mm larger?

[Track/S]

Originally Posted by sly1types

Track/S What is a good S58 physical size comparison to on S55 turbo options? Close to full race turbos? Pure high flow? or Mosselman in terms of size. arn't the full race s55 turbos about 5mm larger?

Close to fullrace

[Jbonly21]

Originally Posted by sly1types

Track/S What is a good S58 physical size comparison to on S55 turbo options? Close to full race turbos? Pure high flow? or Mosselman in terms of size. arn't the full race s55 turbos about 5mm larger?

Mosselman and stock.

[Milan]

Really good post/content. Thank you for sharing...this will be referenced for years to come!

[wheela]

Originally Posted by Track/S

I think single with a cast manifold would weigh more, but there wouldn't be much difference either.

Here's some single weights, n55 but that shouldn't matter much:

BW EFR 8374: 28.6 lbs (79 lb/min. or about 750 hp capable)
Speedtech cast manifold: 17.2 lbs

Do you have any weights for singles?

[Track/S]

Originally Posted by wheela

Here's some single weights, n55 but that shouldn't matter much:

BW EFR 8374: 28.6 lbs (79 lb/min. or about 750 hp capable)
Speedtech cast manifold: 17.2 lbs

Do you have any weights for singles?

Nope.
I will have to weigh s55 ones

[wheela]

Originally Posted by b_w.

I really like the 4n manifold, do you have a weight on it? I'm curious how tubular and cast manifolds compare weight-wise.

[b_w.]

Originally Posted by wheela

I really like the 4n manifold, do you have a weight on it? I'm curious how tubular and cast manifolds compare weight-wise.

never did before installing

[RAT3DM]

shouldn't matter much:

BW EFR 8374: 28.6 lbs (79 lb/min. or about 750 hp capable)
Speedtech cast manifold: 17.2 lbs

Do you have any weights for singles?[/QUOTE]

Just weighed my stock turbo and manifold 13.4 lbs

[wheela]

Originally Posted by RAT3DM

shouldn't matter much:

BW EFR 8374: 28.6 lbs (79 lb/min. or about 750 hp capable)
Speedtech cast manifold: 17.2 lbs

Do you have any weights for singles?

Just weighted my stock turbo and manifold 13.4 lbs

[/QUOTE]

Wow, those are lighter than I expected.

[RAT3DM]

This is a great post btw, one of the first things I noticed was that BMW made the turbos for the G8X bigger equivalent to like a Full race size which is why it doesn't surprise me that they make great power on stock turbos. Add the fueling and block updates and its just an all around performer.