B6tPoweredMx3

Well, I have a fellow enthusiast trying to tell me that a 14b is more effiencet (Not quite sure his definition of efficent is) Than a Evo 16g.
This is not only at 12-15 lbs but he also says a 14b will be efficient up to 25 lbs..
Pretty much what im asking of anyone with experience with these turbos could you please speak up. Because i know that this is complete Bullshit , he just likes to hear himself speak.

BTW: This on a 2.0 dsm

Thanks

PM-Performance

I know ive driven 14b's to 21-22 psi without a problem at all personally. They really wake up thats for sure.
The EVO 16G is supposed to be the **** though. I dunno. We swapped my friends 14b with a small 16g and it ran like poo poo. We put the 14b back in

093turbo16

iTrader: (2)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by itr206 &raquo;</TD></TR><TR><TD CLASS="quote">I know ive driven 14b's to 21-22 psi without a problem at all personally. They really wake up thats for sure.
The EVO 16G is supposed to be the **** though. I dunno. We swapped my friends 14b with a small 16g and it ran like poo poo. We put the 14b back in</TD></TR></TABLE>

You did something wrong then.

My whole family runs the DSM family of turbos. My dad has a small 16G on his talon, I have a super/big 16g on my civic, my sister has a 14B on her civic and my brother has a super/big 16g on his sentra.

I will tell you that, the 16g swap from the 14b in my dad's car was night and day difference, and that is the same between my old setup having the small 16g and my sisters car having a 14b.. it is a pretty big difference in power. And it is enough that you can notice it, even though they use basically the same turbo.

So all in all, the 14b probably won't be pressed to incredibly on a mitsu, have you ever seen how they make power? Might be b/c of the turbo, but mostly they have lots of midrange and fall off up top.. I would think mostly b/c of head design and cams. But a honda with a 14b, it will run out of its efficiency much faster, reving much higher in the rpms.

Rory Breaker

Saying a 14b is more efficient than an evo 16g at those levels is a ridiculous statement. Bottom line. A 14b at 25PSI must be like pure dragons breath. I cant imagine there is any benefit to be seen at that boost level, if its not detrimental even.

PM-Performance

i dunno man. Maybe we werent running enuff boost on it, but 21-22psi on the 14b and the 16g , the 14b felt better.
even did a retune and jsut wasnt the same.

093turbo16

iTrader: (2)

maybe the turbo was crap or something. That is weird.

USDM 4G VTEC

how efficient?

look it up!

SOHC_MShue

exactly. If you want to prove him wrong show him the compressor maps for both turbos.

LShatchie

I have always liked the 14b over t25,and 16g

blown_LS

14b's love that 15psi spot but anything over that it starts to fall out of its efficiency. I have ran mine 14b up to 20psi on race gas and the car ran fine with no knock but like it wasnt making all that power at that boost level. But in dsm comunity people have gone just as fast with 14b as with 16g with just some minor porting to it.

CivicMike

wtf dude....thats just wrong................

stealthmode62

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93turbo16 &raquo;</TD></TR><TR><TD CLASS="quote">

My whole family runs the DSM family of turbos. My dad has a small 16G on his talon, I have a super/big 16g on my civic, my sister has a 14B on her civic and my brother has a super/big 16g on his sentra.
</TD></TR></TABLE>

Holy ****, the whole family's boosting. haha

I personally wouldn't put a 14B on a D15. They seem to fall off up top no matter what.

splitime

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by USDM 4G VTEC &raquo;</TD></TR><TR><TD CLASS="quote">
</TD></TR></TABLE>

Anyone wanna map out a z6 on that map?

Syner-G-Racing LLC

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by elpiar &raquo;</TD></TR><TR><TD CLASS="quote">

Ban this guy</TD></TR></TABLE> You need to edit your quote because the link is still working. I just fell victim to spooledyou's family reunion pic
this dude has some childhood trauma lurking in his past

093turbo16

iTrader: (2)

actually me and big wig were checking out the compressor maps for a DSM. And really the 14b stays in efficiency more in spool up and the 16g barely gets more efficient, if it even does on the 2.0 motor. So I would say that the 16G would win on a motor that revs higher, but it seems to me that they are about equal to tell you the truth in compressor maps.

.nate

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Syner-G-Racing &raquo;</TD></TR><TR><TD CLASS="quote"> You need to edit your quote because the link is still working. I just fell victim to spooledyou's family reunion pic
this dude has some childhood trauma lurking in his past </TD></TR></TABLE>

ROFL

99_GS-T

EVO 6.5 16G compressor flow map, which is supposedly almost identical to an EVO 3 16G. The only difference being the material the wheel is made in and they are mirror images, as the EVO 4-8 have turbochargers that spin the opposite direction to allow the engine to be flipped 180 degrees in the chassis.

The 14b does cross a higher peak efficiency island at ~24 PSI then the 16G, but that doesn't mean it will be more efficient where a 2.0L runs it. A 14B will flat out run out of air long before the rev limiter on a 2.0L at 24 PSI. The 16G on the other hand will be able to maintain that boost level much further into the RPM range as it can flow roughly 25% more air then the 14b.

In a sense, he is correct. The 14b does obtain a higher efficiency (thru a very limited airflow range) then the EVO 16G.

pdc125

I will try to find a friend's dyno graph and post it up here to prove some points. It was a stock 2.0 1g DSM with the 14b with NO wastegate. At WOT boost would spike up to ~26psi, and then dramatically drop off through the higher rpm's. Before he sold the car, his solution was to buy a 16g.

EDIT: This isn't the graph I was looking for, but nonetheless, it will help prove the point.

Sprockets

iTrader: (6)

elpiar, please delete the link in your quote!

wpgcivic

i am running a 14b on my z6...14 psi and no drop off, stays consistant power all the way to 8000 rpm...love the turbo

B6tPoweredMx3

Wow, guys this is good info.

Zer0DazE

i made more power with less boost on a small 16g, and a lot more power at the same boost.

16g &gt; 14b

edit: just to back it up

red is 10 psi at 3500 rpm and 7000 rpm on a 1.6 (i have a d16, you b series guys can do your own math)
blue is 20 psi





i would say where it counts, the 16g is more efficient
the 14b would pass through its peak efficency in 1st or 2nd gear, and you would never see it again.




Modified by Zer0DazE at 2:31 PM 9/7/2005

CivicMike

nice work zero.......could you map out a BIG 16G?

Zer0DazE

wow, i must be sick today. i would normally never be nice enough to do this.



edit: this thread was supposed to be about a 2 liter. with a 2 liter the 14b would be even less efficent.

093turbo16

iTrader: (2)

For some reason when I do this on mine, it isn't the same. I will see if I can post it.

I will see what the differences are. Hm.