Whats up with the 47 trim

[JohnCIV_Talon]

I literally find nothing on here about a 47 trim. On one site I saw it said, it can give you the power of the 20g, with the spool of a 16g. Now if that were true, why is it not more popular? Sounds like a great street turbo to me. I found a bullseye borgwarner 47 trim that was internally gated for 700. Now thats a good deal.

So anyways, I would like some info on this turbo please. Anyone. Experiences?? Power you made? Will it get me to 350whp?

 

[JohnCIV_Talon]

Oh come on guys, doesnt anyone have any experience with a 47 trim.

 

[GVR4592]

Lets see some links to this 47 trim.

 

[aero_sallee]

Is this the one you are referring to?
http://www.theturbotrader.com/product_info.php?cPath=67_37&products_id=184

Its only ~16g sized though at 40lbs/min

 

[JohnCIV_Talon]

exactly!!

 

[JohnCIV_Talon]

its featured on the front page, i dont know what that link is showing on yours.

http://theturbotrader.com/

 

[JohnCIV_Talon]

this is also a good deal. 57 trim is pretty big though. http://www.theturbotrader.com/product_info.php?cPath=67_37&products_id=134

 

[GVR4592]

The 57 trim is comparable to a Evo 3 16g, it's not very big. The 47 trim is comparable to a Big 16g, I'd say neither one of them are worth putting on your car.

 

[aero_sallee]

The 57 trim is comparable to a Evo 3 16g, it's not very big. The 47 trim is comparable to a Big 16g, I'd say neither one of them are worth putting on your car.

I'm not a fan of the 57 trim at all, but how is it comparable to the Evo3? It spools quite a bit slower, and is rated for ~5-6lbs/min more?

 

[GVR4592]

I'm not a fan of the 57 trim at all, but how is it comparable to the Evo3? It spools quite a bit slower, and is rated for ~5-6lbs/min more?

Where did you find a TO4E 57 trim that flows 49 lbs/min? Every compressor map I have rates it at 43 lb/min, which is exactly the same as a Evo 3 16g.

 

[MrBoxx]

I think I have one of those 47-trims. SBR and Bullseye (note the exhaust housing in the link looks exactly like a Bullseye) call it an M-trim, I believe. It'll be going on my car probably in a month or so. I'll get a few numbers and some DSMLink logs from it.

Edit: I was told that it flowed somewhere between an Evo3 16g and an 18g. I bought it cheaper than I could get any flavor 16g and it's fully polished, so either way, I think I got a decent deal. We'll see how it performs. All I'm looking for is a good transition from a 14b to something larger and more permanent. I think it'll fit the bill.

 

[aero_sallee]

Where did you find a TO4E 57 trim that flows 49 lbs/min? Every compressor map I have rates it at 43 lb/min, which is exactly the same as a Evo 3 16g.

I was thinking it was closer to the TO4E 50, then the map I looked at was tiny. Most of the dynos that I've seen with the 57 seem to make a bit more power than the EVO3, giving up response for sure. The 57 seems to have problems with surge on some other applications too.
Excuse the mistake.

 

[dsm-onster]

My Forced Performance evoIII 16G compressor map shows .29 kg/sec massflow at the farthest point on the map. According to the map this is referenced to 20*C (68*F).

Of course, 0.29kg/sec = 17.4kg/min. And, 1kg = 2.2046lb

This puts the evoIII 16G at 38 lbs/min.

The 57 trim map I have shows 43 lbs/min, as already mentioned.

Of course, I have no idea at what temperature turbonetics performs their compressor tests. I doubt it would be so much of a temp difference to make up for the 5 lbs/min airflow difference. That's 50 hp.

BTW, I've looke everywhere for a "47trim" map. And I cannot find it. It's a Borg Warner compressor wheel, right? That's what SBR says anyway.

BEP mentions the 47-trim compressor here w/ the s300 borg warner turbos. It has a 10.2 cm exducer!!!

 

[aero_sallee]

My Forced Performance evoIII 16G compressor map shows .29 kg/sec massflow at the farthest point on the map. According to the map this is referenced to 20*C (68*F).

Of course, 0.29kg/sec = 17.4kg/min. And, 1kg = 2.2046lb

This puts the evoIII 16G at 38 lbs/min.

The 57 trim map I have shows 43 lbs/min, as already mentioned.

Of course, I have no idea at what temperature turbonetics performs their compressor tests. I doubt it would be so much of a temp difference to make up for the 5 lbs/min airflow difference. That's 50 hp.

BTW, I've looke everywhere for a "47trim" map. And I cannot find it. It's a Borg Warner compressor wheel, right? That's what SBR says anyway.

BEP mentions the 47-trim compressor here w/ the s300 borg warner turbos. It has a 10.2 cm exducer!!!

They must make multiple 47 trim compressors because that thing is massive. 70mm inducer.

 

[daren_p]

They must make multiple 47 trim compressors because that thing is massive. 70mm inducer.

And thats exactly why its pretty much pointless to refer to a turbo by its trim Trim is a ratio & not a size.

It may be the old story that nobody posts unless you have something bad to say but from the threads I recall, owners of the "57 trim" defently didn't like it for our application & surge seems to be an issue. As far as the "47 trim" goes, while I've seen lots of turbo threads I don't recall seeing info on it. Alot of the time there is a reason why most people don't run a certain turbo on our cars.

 

[aero_sallee]

And thats exactly why its pretty much pointless to refer to a turbo by its trim Trim is a ratio & not a size.

Exactly.
I mean a 14b is a 55 trim, it must be larger than a TO4E 50 trim right?

 

[dsm-onster]

And thats exactly why its pretty much pointless to refer to a turbo by its trim Trim is a ratio & not a size.

It may be the old story that nobody posts unless you have something bad to say but from the threads I recall, owners of the "57 trim" defently didn't like it for our application & surge seems to be an issue. As far as the "47 trim" goes, while I've seen lots of turbo threads I don't recall seeing info on it. Alot of the time there is a reason why most people don't run a certain turbo on our cars.

Absolutely agreed, and agreed. Thus why I mentioned the "47 trim" exducer diameter .

The 57 trim we're used to discussing has such a "diagonal" compressor map, no wonder guys have complained about surge. It seams to be a good turbo for a medium stroker setup or for an n/a v6 to turbo upgrade.

 

[IPT]

I have riden in some automatic cars that have the BEP 47 trim on it and they spool really quick. These cars still had the stock stalls in them and as soon as your foot hit the floor from a dead stop they were into boost. Same thing in a Auto WRX.

 

[JohnCIV_Talon]

I think I got a lot to learn about turbo's.