b18b with short ram intake, skunk2 intake manifold, header, hi flow cat, 2.25 to a magnaflow, brand new dizzy, denzo iridium plugs, ngk wires, all running off a pr4, and moves with a grinding ys1. checked and double checked timing, let someone else check and double check the timing. when i have time, i'll be checking the voltages of all my fuel and emissions sensors. it idles a little silly, and i can't really notice a pattern with it yet. i'm also going to remove and clean my throttle body. revs slow down low it seems. i ran 15.6, and im shooting for at least 14s. i've been referring to my car as the retard.

 

oh, and i'm getting an a/f ratio guage to see how that is. also checking the compression one of these days.

 

part of the problem I see is: running an OBDI engine with an OBD0 computer. The PR4 is designed for different cams and timing and fuel....switch over to the p75 and you should do better.

 

"switch over to the p75 and you should do better"

if it were only that easy.....

i've thought of that too, but other people say not to worry about that. i dunno though. thats a lot of work i don't feel like doing, nor do i have the cash for.

 

15.6 is not that bad of a time, i would expect a few tenth quicker maybe like 15 flat to 15.3, all depends on track conditions and all that bs. maybe its the driver ?

 

I had a similar set up, a 97 B18b stock, i/h/e (aem/jdm itr header/hks exhaust), azenis tires, lightened flywheel, stock pr4, did 14.7 @ 91 mph. Your 15.6 is not bad at all. I'm sure you'll be able to improve it with a few adjustments here and there...Maybe stickier tires, lightening, tuning...

 

computer isn't your problem. ran much better than that.

b18b
pr4 computer
jdm itr header
2.5 exhaust
iceman cai
pr3 pistons
6 puck clutch

i ran 14.4 @95 with a 2.2 60 ft.

full interior 90 crx si

 

15.6 is not good no matter what you say. guy near me right now has a zc with a good clutch and thats it and ran 14.7, and if you look at the specs on those 2 motors.... anyway, its not the driver. i might not be the best, but i'm pretty decent. i ran a 16.0 stock. thats all 108 hp. lets see, i have 32 more hp without the mods, and wow, look what i have to show for it! .4 seconds. maybe you'd be happy with 15s, cause thats the best you could do, but i'm looking for mid 14s before i'm happy. tranny sucks though. rebuildin that over xmas probably, when i have time and money. but no, 15.6 sucks ***. anyone out there solve their lack of power problem????

 

Yea somethings gotta be wrong somewhere, in my full interior 93 cx with a b18b and a gsr tranny with i/e i pulled a 9.5 in the 1/8th which is pretty much a high 14 in the 1/4 as to what i've been told.

 

[QUOTE=89Si] maybe you'd be happy with 15s, cause thats the best you could do, but i'm looking for mid 14s before i'm happy. [QUOTE]

you like to talk rugged yeah

 

it sucks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 89Si &raquo;</TD></TR><TR><TD CLASS="quote">b18b with short ram intake, skunk2 intake manifold, header, hi flow cat, 2.25 to a magnaflow, brand new dizzy, denzo iridium plugs, ngk wires, all running off a pr4, and moves with a grinding ys1. checked and double checked timing, let someone else check and double check the timing. when i have time, i'll be checking the voltages of all my fuel and emissions sensors. it idles a little silly, and i can't really notice a pattern with it yet. i'm also going to remove and clean my throttle body. revs slow down low it seems. i ran 15.6, and im shooting for at least 14s. i've been referring to my car as the retard. </TD></TR></TABLE>

The PR4 is probably at least part of the problem. But from my experiece, LS motors are not all they are cracked up to be. Back when I had a B18B in my 1988 STD HB with an AEM CAI, Greddy catback, and P75 ECU, it only ran 15.5. But than again, I didn't have a header. On the other hand, I hear they run ALOT faster if you use a B16A transmission. Maybe this is what the guy who ran 14.7 had. But keep in mind that with a B16A transmission, you will run dangerously high ervs (for the motor, that is).

By the way, what is your trap speed. LS motors typically trap at around 90MPH in an ED. If yours was much slower than this, you could have a problem with your motor. If it is similar, then I would look at traction as being the problem.

 

is you YS1 the short gearing or long gearing trans??

i have a ys1(gsr) on my b18b with iceman intack and cherrybomb exhaust and act 6puck disk and ran 14.8 but could do better cause im not use too the clutch yet and hawaii tracks sucks *** my 60ft is 2.3 and my trap is only 89mph on cheap tires

 

Well,

the obvious question, is what shape is the motor in? Looks like you have the tune-up stuff done, what about the compression of the motor, and leakdown?

The skunk2 intake manifold is probably hurting you. All the dyno charts I've seen with them usually make less power over stock until you get up into the high rpm ranges, past stock redline. Especially since you have a stock internal motor, no cams, no higher rpm parts, its just hurting your performance across the board. I wouldn't be surprised if its costing 5 ft-lbs through most of your important rev-ranges..

And you are probably running lean, with the intake/exhuast, and stock programming.

If its an OBD1 PR4, then I'd get a hondata, and dyno tune it. If OBD0, I'd either chip it, and/or get an AFC, and dyno tune it.


What were your trap times?

 

i ran at 87mph. and i hadnt heard anything like that bout the skunk2 i/m. the motor had 75,000 miles on it so i didnt think i had to worry about it too much, but i will be checking the compression soon.

 

i ran a 15.8(150, 150. 150. 90, compression numbers) in Z6 CRX with SI ECU, vtec controller, i/e. That was slow, and i was mad. I raced a 4 door ef, that ran a 15.2 so.... That time is bad, you know it. Just keep trying it.

 

There are so many varibles, check my setup. 96 B20 9.2 comp. 93 LS cams (supposedly better then the b20 ones) Sk2 IM Intake DC header (open) BFG drag radials, LS tranny. O this is in a 91 Rex. I ran 15.6 @ 85mph.... 2.2 60ft, spinning through 2nd... With the slicks it droped my MPH to 85mph from 90mph but dropped ET from 15.8... to 15.6 Also Im @ 2800ft above sea level and it was 105 degrees out. I hoping to go back when its cooler out and some bigger slicks, bumped Fuel pressure and fixed linkage, to hit 15.2s or 15.0 flat.... I wish... It all depneds on conditions driver ect... If your looking for some extra HP, check out http://www.ef-1.com Check out the L21 cams for the b18/20. With cam gears and tunning Jalopy SiR made 20WHP. No joke, have fun,

Blaze

 

damn yall, i have a b18b in my SI, thats right all 2300 pouns of her and i ran a 15.0 stock everything except intake, gutted cat and catback, stock header too and street tires at full psi

yall should be faster than mine

 

About the intake manifold, most aftermarket manifolds make more power by shortening the intake runners and increasing the volume of the runners and plenum, which raises the 'tuned' rpm that it helps increase power.

The concept is to create a sweet spot rpm where the velocity and intertia of air in the port is helping force air into the cylinder, and create higher volumetric efficiency.

I'm not saying that manifold is 100% hurting you, but aftermarket manifolds are going to be tuned for higher rpm, moving the 'sweet spot' further up the rpm range.

What you have now, is pretty stock. You don't have anything to warrant rasing the redline. Your manifold will flow great at 7000 rpm, but your cams won't, so it won't help.


I know that Raene on this board runs lower 14's in his CRX. He just dyno'd his motor, like 145 hp and 106 tq or something. With the bolt ons, and a new set of cams(which will help use that manifold you have) you can get 140whp from your motor, but will 115-120tq, and you should be getting 14's, too.


Hmm, heres a question:

You obviously had some time in it with the stock motor..does it feel a LOT stronger that motor? Liek you said, you should be probably 40 hp and 15-20tq stronger with this motor. I'd think it would feel noticibly faster.

SInce its an OBD1 motor, what did you do wiring wise? Did you convert to an OBD1 ecu, or convert the motor to OBD0? That could be a start....

 

well the car definitely feels faster than the old one. it pulls like hell at around 5500rpms. i converted it to non obd using a pr4 from a 91 teg. the wiring was basically self explanitory. i just rerouted a few wires, but didn't change much. anyone else running a non obd b18b? what wiring changes did you have to make?

 

Then, it may be the program holding you back.

The B18b is 142 hp at I believe 6300 rpm, the OBD0 B18a is 130hp @ 6000 rpm.

I'd be looking to a new chip to gain back the power you should have, but the OBD0 ecu isn't letting you have.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by haggar &raquo;</TD></TR><TR><TD CLASS="quote">
I know that Raene on this board runs lower 14's in his CRX. He just dyno'd his motor, like 145 hp and 106 tq or something. With the bolt ons, and a new set of cams(which will help use that manifold you have) you can get 140whp from your motor, but will 115-120tq, and you should be getting 14's, too. </TD></TR></TABLE>

Woo woo... someone mentioned me? hp is in my sig.

I'd also recommend trying a new computer... you might be underfueled. You could always get a B&M FPR and turn up the fuel pressure a bit - that'll compensate if you're running a little lean.

 

yeahi would have to agree that is not very good. I ran a 15.2 in a cx hatch with a b18a1, with ls tranny stock exhaust and no map sensor...so there was a huge black cloud behind me all the way down the track. Never got a chance to run it after i fixed that. But im sure it would have easily ran 14's. Also i switched out the ls tranny and ran a y1 cable tranny with hasport conversion and it was alot quicker acclerating... but i pulled a 2.1 60ft on the 15.2 run @88

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civickiller &raquo;</TD></TR><TR><TD CLASS="quote">15.6 is not that bad of a time, i would expect a few tenth quicker maybe like 15 flat to 15.3, all depends on track conditions and all that bs. maybe its the driver ?</TD></TR></TABLE>I'd say thats not that great of a time. My friend with an LS in his rex runs 14.9 with it. There's so many variables that come into play. I posted something about basically the same problem because I was losing speed somewhere, and there were so many things I found that I never really though of altogether. You're doing it the right way though, checking everything systematically. You'll find the problem soon.

 

one last thing? any codes?