here are the specs of my engine:
lightened crank
ls rods
.25 os ctr pistons
ls gasket
b16 pp head
crower valvetrain
ctr cams
b16 intake and tb
b16 injectors
255 lpm fuel pump

i tried three different cams:
b16 (99sir) cams: 183hp - 142tq
cat cams stage3: 187hp - 141tq (huh?)
ctr cams : 185 - 145tq

my friend told me that the reason for not getting good power with cat cams or ctr cams is because of my small intake and tb. if that's the reason, which intake should i get? thanks for any replies.

 

That torque seems real high for your setup,but the power seems about right.What engine management are you running?And is this car daily driven or a weekend car?

 

the b16a IM, tb, and injectors is your biggest problem i can see.
port IM or get itr IM..., get a bigger tb, and get some bigger oem injectors...itr, lude, s2k etc...

also what kind of air intake? try a j's or a j's copy
and tune it again after all that.

 

JDMotive: chipped si comp. and it is a daily driver

Agent#ONE: intake, short pipe and K&N filter,
will the injectors that you mentioned fit whitout any mods?

 

at least upgrade to some rc 310cc injectors..those stock ones are probably at 90% duty.You should also get aftermarket rods,I dont think the stock LS rods will hold up to much more power NA than what youve got.An ITR TB and a ported stock intake manifold will definately help you out alot.

 

thanks for the help, i'll definately get the itr tb and intake. and about the ls rods, i heard they're good up to 300hp, does that seem realistic?

ps: is jg edelbrock too big for my setup?

thanks again

 

LS rods are good to 300whp turbo engines,but NA engines are usually higher revving,and 200whp @ 9k puts more stress on the rods than 300whp @ 8 k.
The JG manifold will definately be too much for your setup.Though ive heard they make 2 different one's now,ive never tried anything but the older huge plenum design,which was way too big for my 200whp ls/vtec.

 

i don't know how high you rev yours but mine cuts off at 8100rpm. how did you get 200hp, what was the biggest inprovement, and whats your setup?

 

Ive had numerous 200whp engines...most are/have been ls/vtec's...ive built a couple with stock bore/stroke,eagle rods,JE 11.5:1 pistons,ported b16a head...1 had CTR cams,1 had JUN 3's and one had skunk2 stage 2's...all of those were around the 200whp mark..Most of the engines ive built have been in the upper 180's/lower 190's...and the best was 208whp(skunk2 Stage 2 cams,around 12:1 compression)...i havent tried ITB's on any setup yet,but than again I havent had the money to try anything crazy.

 

all i know right now is that i have to get 200hp. but before i do that i have to fix another problem that has just shown up. my engine is spitting back radiator fluid into the reservoir. at first i thought my fan isn't working, but it is. my last hope is that there is something wrong with spoon thermostat that i've replaced. so i have to figure this out first.

 

It's not enough to look at max hp and max torque. You want to maximize the hp over the top 2500-3000 rpm of your power band.

If you are running high compression and high rpms (say 9000 or more), then replacing the intake manifold and throttle body are definately going to help. However, "How to Build Honda Horsepower" by Richard Holdener includes dyno plots of a B16A manifold versus the Skunk 2 intake on a somewhat modified B16A engine (including Crower 401 cams, which are very similar to the CTR cams), plus another test of the B16A intake versus the ITR intake on both the B16A and a B20 2.0L LS/VTEC hybrid. Against the Skunk 2, while the Skunk 2 intake generated a lot more power above 8000 rpm, the B16A intake significantly outperformed it all the way up to 8000 rpm. Similarly, the ITR intake made a lot more power above 7600 rpm, but the B16A intake just whipped it from 5000 to 7600 rpm. If you look at the areas under the curve, the B16A probably out-performed both the Skunk 2 and the ITR, even though it had lower peak hp numbers. So, if you are running a lightly modified engine and aren't going much above 8000 rpm, the B16A manifold might be better.

Also, the same book had throttle body comparisons on lightly modified engines, which indicated almost no power effect. Again, on a high rpm engine, you would definately want to replace the throttle body, but it might not be worthwhile on lightly modified engines.

 

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is it a p28? what kind of chip?
sounds like you need tunning.whats your A/F like?

 

umm, i don't know what kind of chip, but it is specific for ls/vtec (if that makes any sense), and after i installed fuel pump a/f is good.