Numbers:
Peak HP - 158whp
Peak TQ - 124ft-lbs

Engine:
B18C1
DC 4-2-1 header
B&M FPR set@50psi
Chipped P28
VTEC@4800rpm
Skunk2 Manifold
Cheapo Intake Tube
Gutted Cat
3 champer muffler
AEM cam gears (I+2 deg.; E-3 deg.)


Here is a comparison to my B16A1 to the B18C1. I picked up roughly 24whp and 23ft-lbs of torque. Also, the powerband is oh so smooth right up to 8000rpm where it starts trailing off.

Torque line is also much nicer than the B16A1. Base numbers without tuning was 157whp/122tq


This is one of about 12 runs we did today. We played around with timing, set the cam gears to provide more power at a lower RPM, and fuel pressure to ensure proper air/fuel ratios. He didn't have his wide-band working all that well, so we couldn't test it better.


Looking at the graph more, it's no wonder why this engine just feels so much better... i have more torque at 3500rpm than i did at peak with the B16A1. It looks like the best place to shift is at 8000rpm, which i'll start to utilize.

Adjusting the VTEC switchover did absolutely nothing. I moved it from 4800rpm to 4400rpm...on the dyno, it make a little hump at 4400 and increased torque maybe 2ft-lbs for 200rpm, then followed the same line as the others.

The car fully loaded, weighs 2251lbs with a full cage. I cut the forward hoops out, which netted a 52lb savings. 2199lbs for the car as it is. when i do the drag race, I plan on removing the other 80-90lbs of the rear rollbar which should put the curb weight around 2120lbs.

So, I'm a bit relieved...since my poor showing at the drag strip this past week, the traps showed a much lower HP...

 

pff, still can't touch my turbo D's Then again, the turbo D's probably wouldn't like track days too much. Looks great!

 

nice #s there! that TQ gain must really make your day have fun trying again now

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sporkcrx &raquo;</TD></TR><TR><TD CLASS="quote">Then again, the turbo D's probably wouldn't like track days too much.</TD></TR></TABLE>
who knows, with some tuning that leaves room for error for variances in air/fuel and higher temps... you probably could.

i've thought about going turbo...

 

thats good man!

 

Did you convert to OBD-1? Just wondering...My old 94 GS-R dynoed at 157.3 @ 7800 and 119 @ 5500 with i/h/e. You should be killing that setup with the mods you listed. Either way the Pwr to weight in that thing has to be fun!!!

 

I finally got my b18c CRX on the road, and with the s2 manifold, it seems to lag pretty bad when vtec is engaged. Seems like it doesnt really pull well in vtec until close to 5500-6k. I know it needs to be raised for a smoother crossover, but I'm wondering why you left it at a lower RPM.

Does yours feel like that? I realize it would only create a little hump in the graph, and that the peak numbers would be the same, but I was just curious how it feels in your car since it doesnt feel so great in mine.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Driven &raquo;</TD></TR><TR><TD CLASS="quote">
who knows, with some tuning that leaves room for error for variances in air/fuel and higher temps... you probably could.

i've thought about going turbo... </TD></TR></TABLE>

Once I have more than one car I will do it. I've seen it done quite a few times...I'm just a wuss to do it with my only car

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SohcTurboEG &raquo;</TD></TR><TR><TD CLASS="quote">Did you convert to OBD-1? Just wondering...My old 94 GS-R dynoed at 157.3 @ 7800 and 119 @ 5500 with i/h/e. You should be killing that setup with the mods you listed. Either way the Pwr to weight in that thing has to be fun!!! </TD></TR></TABLE>
yep, converted to OBD1, except for injectors. Still running OBD0 injectors with resistor box.

Mind you, the mods I listed also contribute to the WAY the power comes on, not just OVERALL power. I wasn't looking on making 170-180hp at 8500rpms. I really wanted a very smooth powerband from 5500-8000. I'm sure i could have made MORE power if I put a different chip in the ECU and played around with the cams more...but, then i would have a drag race motor that makes all of it's power over 2000rpms.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr_CRX &raquo;</TD></TR><TR><TD CLASS="quote"> I know it needs to be raised for a smoother crossover, but I'm wondering why you left it at a lower RPM.</TD></TR></TABLE>
We played with the VTEC switchover and the dyno proved it did nothing for my engine/setup. I'd rather have it lower, as some corners require a much lower RPM...I'd rather be on the VTEC lobes coming out of the turn, then 20 feet down the straight. This also proved to be faster at last weekend's race. VTEC was set at 5600rpms. Dropped it to 4400rpms and dropped a second off of my lap times.

 

did u make any dyno pulls w/ vtec @ 5.5k ish ?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crx_88_si &raquo;</TD></TR><TR><TD CLASS="quote">did u make any dyno pulls w/ vtec @ 5.5k ish ?</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crx_88_si &raquo;</TD></TR><TR><TD CLASS="quote">did u make any dyno pulls w/ vtec @ 5.5k ish ?</TD></TR></TABLE>
yep, it made the torque curve more pyramid like and the powerband shoot up.

it was rather an ugly change

 

numbers look good, but im making more power on a b17 with the roughly the same mods. making 3 more hp and 4 less tq.

""Mind you, the mods I listed also contribute to the WAY the power comes on, not just OVERALL power. I wasn't looking on making 170-180hp at 8500rpms. I really wanted a very smooth powerband from 5500-8000. I'm sure i could have made MORE power if I put a different chip in the ECU and played around with the cams more...but, then i would have a drag race motor that makes all of it's power over 2000rpms.""

After reading this i guess i can see why you don't need the peak numbers as long as the power is where you need it when coming out of a corner.

 

Nice work, its always good to hear that your working on this car

 

Good numbers I can't wait to dyno my Poor-mans Type r in the next couple of weeks. Thats a good crossover very smooth can't wait to see more.

 

can u post a pic of it? or.. er.. draw it on ur existing (i know not super duper accurate) sheet?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Driven &raquo;</TD></TR><TR><TD CLASS="quote">
yep, converted to OBD1, except for injectors. Still running OBD0 injectors with resistor box.

Mind you, the mods I listed also contribute to the WAY the power comes on, not just OVERALL power. I wasn't looking on making 170-180hp at 8500rpms. I really wanted a very smooth powerband from 5500-8000. I'm sure i could have made MORE power if I put a different chip in the ECU and played around with the cams more...but, then i would have a drag race motor that makes all of it's power over 2000rpms.

</TD></TR></TABLE>

Yeah I veiwed your graph and your torque is great in a light weight car. Also your Engine is making 150whp about 500 rpm before my gs-r did....anyway great job!!!!

 

nice/smooth powerband

 

not bad.

why did you feel the need to raise the f.p. w/ stock injectors and pretty much a stock motor? Just wondering, good luck.

 

not to bad at all

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Pooptooth &raquo;</TD></TR><TR><TD CLASS="quote">not bad.

why did you feel the need to raise the f.p. w/ stock injectors and pretty much a stock motor? Just wondering, good luck.</TD></TR></TABLE>
stock GSR is at around 50psi... .shrugs.

 

sweet! my ls/vtec pulls so much harder than my b16 did too. gotta love torque we have very similar dyno #s (see sig.) Youre gonna love it

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Driven &raquo;</TD></TR><TR><TD CLASS="quote">
stock GSR is at around 50psi... .shrugs.

</TD></TR></TABLE>

actually itr's and nsx's are around 50, stock gsr is 39-46 w/out the vaacum hose connected. :shrugs:

 

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

actually itr's and nsx's are around 50, stock gsr is 39-46 w/out the vaacum hose connected. :shrugs: </TD></TR></TABLE>