i was thinking of running a dsm 14 b on my stock ls motor. i was wondering if it will hold egnogh boost till redline. also would it be a decent turbo to run for now till i upgrade later on. also iam new to the boost . this is going to be my first boosted car. any help is very appreciated

 

turbo is good for low/mid range power, but will start to fall on it's face toward redline...
it depends what your goals are, low mid range power, or more top end power.

good luck, do some searches theres lots of info.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by thelate1 &raquo;</TD></TR><TR><TD CLASS="quote">turbo is good for low/mid range power, but will start to fall on it's face toward redline...
it depends what your goals are, low mid range power, or more top end power.

good luck, do some searches theres lots of info. </TD></TR></TABLE>

can u support any proof!?

my 14B goes to 7500 without loosing any boost at all, on my 1.63L and i push 10-11 psi daily

and on many DSM people i know, also take ti up to the 7200 redline, and they dont see any boost drop neither, and they are on 2.0L motors and sometimes @ around 16-18psi range on many DSM's and they still keep boost

i call BS

 

<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">

can u support any proof!?

my 14B goes to 7500 without loosing any boost at all, on my 1.63L and i push 10-11 psi daily

and on many DSM people i know, also take ti up to the 7200 redline, and they dont see any boost drop neither, and they are on 2.0L motors and sometimes @ around 16-18psi range on many DSM's and they still keep boost

i call BS</TD></TR></TABLE>

This man speaks the truth !

 

too small! It was too small for my zc even.

 

Its a good size for the ls motor..Very good powerband

 

Honestly it will just leave you wanting more. If you trully love boost I used a 14b an 3 months later I was bored and ready for more. I even had it on 14 lbs.

 

It will start becoming unefficient towards higher rpms on a LS motor. Would def. go with a straight t3 if you are even considering a 14b. Reason they go so far on other motors are they dont rev as quick and from what I would guess dont push out as much air as hondas do. Why do you think a stock d-series motor on 8 psi can rape a eclipse gst motor on like 15+ psi other than the car is a ton of weight.

 

<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">

can u support any proof!?

my 14B goes to 7500 without loosing any boost at all, on my 1.63L and i push 10-11 psi daily

and on many DSM people i know, also take ti up to the 7200 redline, and they dont see any boost drop neither, and they are on 2.0L motors and sometimes @ around 16-18psi range on many DSM's and they still keep boost

i call BS</TD></TR></TABLE>

You just said it yourself.. 1.63L with different stroke characteristics will produce a much different band than the LS.

As an owner of both DSMs and Honda turbos, The two are like applez to Grapes. Depending upong power goals and characteristics, the 14b is VERY inefficient for the LS for most of the upper powerband.

 

The powerband of a Honda/Acura B-series, D-series motor is different from the powerband of the 4G63T motors from DSM.
The transmission gear ratios also make a whole lot of difference when you're trying to spool a small turbo.
Get that down and you will see that the B-series motor such as a 1.6L or 1.8L DOHC VTEC head will outflow a stock 4G63T head. Plus powerband is way up high compared to the 2.0L 4G63T.
14B is nice, but get on the highway and you'll see why most people will go the route of a T3 or bigger turbo.
DSM with 14b are good for the 1/4.
Trust me, my bro and I do lots of DSM work, and everyone who starts with a DSM 14B soon upgrade to the Precision SC series turbos or a Garret T3/T4.

 

DSM owners have a 2.0L engine with a lower redline than an LS, and a head that doesn't flow as well as, say, a B16 head. Traditional factory turbo cars overcome lack of flow by stuffing it with boost, which is one reason they have a big, fat mid-range. A 390hp/411tq probe I was reading about made full boost at 3200rpm, max wtq at 3800rpm, and it was downhill from there. That is a 2.0L factory turbo head/block, using a 60/63 T3 - aguably bigger than a 14B. I've also heard of a DSM owner (built motor) that wanted to see just what the 14B had before he upgraded. Wastegate stuck closed resulted in max of 27psi halfway to redline, then dropping to 17psi or so at redline. Factory turbo cars have cams & heads & exhausts made for traditional turbo theory, as well as a low power ceiling (don't need John Doe killing his dumb, inexperienced ***).

As far as people using their butt dyno to show a turbo's prowess... that's like running a max speed contest with a 200mph tailwind. A turbo may be able to keep a certain pressure ratio, but not be able to flow enough. (that's why big, high-flowing turbos make more power at less boost - they produce more flow at the same psi level).
.


Long story short - the turbo may be rather small for the motor's flow requirements, but it will still have a top-end better than most factory turbo cars.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jst another da &raquo;</TD></TR><TR><TD CLASS="quote"> also iam new to the boost . this is going to be my first boosted car. any help is very appreciated</TD></TR></TABLE>

It'll be a nice first turbo setup. Cheap and simple. I say go for it, the powerband will be nice and fat. You won't be pulling 130mph traps, but it'll give you a nice kick in the pants compared to a N/A LS. And if you ever decide to upgrade in the future, you'll have a ton of available options like a Big16G or even a 20G since you'll be using a DSM flange on your manifold anyways.

 

It's good for 250-275 whp

 

thanx everyone for all the help. iam just going to run the 14b for now. i have a t3/t4 manifold right but iam going to be running a adaptor plate for the dsm turbo.

 

Boost is crack, so even with a small turbo you'll be hooked.

Why shoot **** and just tease yourself with a setup you may *probably* will upgrade later.

I say this in terms of boost being crack, save for the biggest hit you can, with the best knowledge and mind, and go for it. If you like it you can keep on, if not, quit.

 

It's too small. Get something with a T3 flange, so when you upgrade to a t3/t4 you won't have to get a new manifold. A t3 .60/.63 will work fine on your LS or just go with a t3/t4 anyways.

 

<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">can u support any proof!?

my 14B goes to 7500 without loosing any boost at all, on my 1.63L and i push 10-11 psi daily

and on many DSM people i know, also take ti up to the 7200 redline, and they dont see any boost drop neither, and they are on 2.0L motors and sometimes @ around 16-18psi range on many DSM's and they still keep boost

i call BS</TD></TR></TABLE>


whoa.......i was just going on what i've heard. i'm not knocking the guy at all. i've always heard they are good for low/mid boost, not top end power, that was all i was sayin. i'm putting together almost the same setup w/ a t3 .42/.48 i'm going to be happy if i can break 200 whp. i'll be running 7-9 psi daily driven. i wish him luck, we all gotta start somewhere....