Car is a 94 Prelude Si
DSM Manifold
14B Turbo
2.5" Custom Downpipe
Exhaust
HKS SSQV BOV
Joe P MBC
DSM 450cc Injectors
Walbro 255LPH Fuel Pump
Autometer Boost Gauge
Saab FMIC
Custom Charge Pipes
Oil Feed/Return
K&N Filter
Vacuum Lines
Silicone Hoses
Clamps
tuned Uberdata

Car has 127k miles on it, but I recently did a compression check and I got these numbers:
200 210 210 215

So the numbers aren't bad, and the numbers are somewhat close to each other. Am going to take it and get a leakdown test when I get the car fixed.

I know the 14b is pretty small for such a big engine as the H23, but I'm getting that and the other DSM parts for cheap (Friend is upgrading and selling parts to me). Hopefully down the road I'd be upgrading to a B16G once the engine is built some or when I get my tax return.

Do you guys think I'll be able to get 200-230whp out of this set up at 6-7psi? I know alot of it will be in the tune, but do you guys think it would be possible?

 

nope . . . not off 6-7psi. my friend had a h23 cranking like 10 psi and that thing made shitty numbers. He had a similar setup to yours. He made like 155hp 200trq it pulled hard as **** and this was in a full interior 4 door accord with 17's and a bunch of tools, speaker box, and amps in the trunk.

 

A 14b on a 2.3L?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EM1 MIKE &raquo;</TD></TR><TR><TD CLASS="quote">A 14b on a 2.3L? </TD></TR></TABLE>

Sure why not. To make the power you want you're just gonna have to push a little more boost through the motor - no big deal. The 14b should support close to 300whp at the limits.

liam

 

Just thought it might be a bit small for an H23, didn't know it was good for 300whp.

 

i still dont understand how your using a dsm manifold. im not doubting you just when your done take some pics, and explain the process please.

 

Well the exhaust things all fit up to the block. It's just I need to re-drill new bolt holes into it so that it will bolt onto it. I'll definetly snap some pics when I'm finished with it though.

 

i'd be using something a little bigger, those things run out of puff top end on a 1.8 Mitsu, so on a 2.3 it'll struggle big time

EDIT: actually i was thinking of the 13G when i typed this, but either way i still think it'll run out of steam up top

 

on what 1.8? you mean 2.0? the 2.3 puts out more exhaust volume so it would be better up top, not worse.

 

the larger engine also requires more air up top. that is why small turbos on large displacement engines suck. they cannot flow enough cfm too hold the desired boost level

 

I mean the 4G93 1.8L engine, found in the 93-96 Lancer GSR 4WD turbo.

More exhaust volume on a turbo that is out of puff (ie is out of its efficiency range and simply not flowing enough air) on a smaller engine should mean running out of puff on the larger engine as well i would think?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by poid &raquo;</TD></TR><TR><TD CLASS="quote">I mean the 4G93 1.8L engine, found in the 93-96 Lancer GSR 4WD turbo.

More exhaust volume on a turbo that is out of puff (ie is out of its efficiency range and simply not flowing enough air) on a smaller engine should mean running out of puff on the larger engine as well i would think?</TD></TR></TABLE>

correct

 

wow and i though this turbo felt too small for my little sohc 1.6, i can only imagine how it ll feel on a h23

 

as far as the DSM Manifold . . . . yes that is very true. my friend who has the h23 turbo accord is running a DSM Manifold. The flange is virtually the same. No modifications or anything was needed it just bolted right up to his motor, so he used it

As for the 14b supporting 300hp yeah i'm sure it can, but you would prob. have to max out the turbo and push it to its limits or maybe even exceed those limits a little to achieve that kinda power . . . . it also goes back to tuning . . . that is the key part . . . your fuel setup and tuning

 

yes it bolts on but modification is needed. you have to bored out the top 2nd and 4th bolt hole. i ll try and see if i can find the pic on my computer with it already bored out and post it up later.

 

i didnt want to start another thread so i will continue this one . i still have some questions about this setup .

1. is it possible to achieve 200-250 whp at the stock set boost on this turbo ?!
2. at what rpm or powerband would you see boost and fall out of boost ?!
3. some of you recommended a bigger turbo due to it burning up so quickly but what would cause it to do that on the h23 ?!
4. is the 14b putting too much excessive load on the h23 or on itself because of it working so hard ?!
5. and is this turbo safe and reliable on a h23 if used and tuned right ?!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by redxalien &raquo;</TD></TR><TR><TD CLASS="quote">i didnt want to start another thread so i will continue this one . i still have some questions about this setup .

1. is it possible to achieve 200-250 whp at the stock set boost on this turbo ?!
2. at what rpm or powerband would you see boost and fall out of boost ?!
3. some of you recommended a bigger turbo due to it burning up so quickly but what would cause it to do that on the h23 ?!
4. is the 14b putting too much excessive load on the h23 or on itself because of it working so hard ?!
5. and is this turbo safe and reliable on a h23 if used and tuned right ?!
</TD></TR></TABLE>

3) More exhaust flow from a substantially larger motor = higher RPMs for the poor turbo; just as a motor when the RPMs get to high things start to fail, but that is why the wastegate is there, to help the turbo pace itself.

4)On itself as it is working hard

5) Yes

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Vtec92Civic &raquo;</TD></TR><TR><TD CLASS="quote">as far as the DSM Manifold . . . . yes that is very true. my friend who has the h23 turbo accord is running a DSM Manifold. The flange is virtually the same. No modifications or anything was needed it just bolted right up to his motor, so he used it
</TD></TR></TABLE>

yes the dsm mani can work on the h23 and f22 heads, the ports expell exhaust in the same places but only like 3 of the bolts line up exactly, all the others have to be redrilled, it works good, and using a h23 head gasket as a template show syou exactly where to mod the mani

 

definetly possible!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dr_latino999 &raquo;</TD></TR><TR><TD CLASS="quote">3) More exhaust flow from a substantially larger motor = higher RPMs for the poor turbo; just as a motor when the RPMs get to high things start to fail, but that is why the wastegate is there, to help the turbo pace itself.</TD></TR></TABLE>

hmms well, on a h23, at what rpms would make this small turbo start to fail ?! and does it fail only if it is ran at or above this rpm constantly ?!