StorminMatt

1988 B20Z Civic STD HB:

2000 B20Z
1995 P75 ECU
1995 Integra LS intake manifold assembly
Greddy SP catback
DC Sport header (1994-1995 LS)
Custom high flow cat
AEM CAI (1988-1991 Civic/CRX)
B&M FPR set to 50PSI

2483RPM: 53HP, 110ft-lb
2800RPM: 60HP, 105ft-lb
3000RPM: 63HP, 105ft-lb
3300RPM: 70HP, 108ft-lb
3700RPM: 80HP, 113ft-lb
4000RPM: 90HP, 115ft-lb
4300RPM: 100HP, 119ft-lb
4500RPM: 110HP, 124ft-lb
4800RPM: 120HP, 129ft-lb*
5000RPM: 123HP, 125ft-lb
5400RPM: 130HP, 123ft-lb
6000RPM: 140HP, 118ft-lb
6200RPM: 141HP, 116ft-lb*
6800RPM: 130HP, 95ft-lb

* Peak power and torque

Now you know why I highly favor the B20 over the LS.


[Modified by StorminMatt, 4:05 AM 8/9/2002]

Jonathan_ED3

run it at the strip yet?

xXsarcasmXx

I highly like the tq numbers... nice and consistent

HybridFiend

so did you do any tuning on the dyno or was it just a # run? yeah that is some nice torque. That's why I upgraded my B16 to the B17 crankshaft and connecting rods. Instant factory stroker kit.

JalopySiR

torque is yummy.

MikeMAN

torque = something I don't have in my b16

oh well, i guess i need a turbo or some other FI


good numbers.

mike

CWBETB

Whats a B20z rated at from the factory? "not to the wheels"?

markedOO1

I think its 146 for the z..

daver

did you do a compression test on that bad boy? just to compare your numbers to my jdm b20 numbers...

d

StorminMatt

I did do a compression test. My numbers were 215, 210, 210, and 215psi. These numbers sound a little high to me. I also got straight 240s with my B16A. So maybe my gauge is bad. As for power ratings, it is indeed 146HP crankshaft for the B20Z. Honda also rated this motor at 133ft-lb at the crank. The numbers are 126HP, 133ft-lb torque for the B20B. Keep in mind that the stock outputs of these motors are kept artificially low with a poor exhaust manifold, an intake manifold tuned for torque, and a restrictive OBDII ECU.

Speaking of torque, alot of people think the torque output of the B20Z is consistent but the B16A not. Actually, I found the contrary to be true. Torque output of the B20Z varied from 105ft-lb to 129ft-lb. But the B16A torque output varied MUCH less - about 85ft-lb to 100ft-lb.

tinkerbell

i would suggest that greater than 100ft-lbs from 2500rpm to over 6000rpm is pretty consistent!

man, im so excited about my B20 now,

more torque at 2500 than the B16 ever has!

(were these runs done on hte same dyno?)

thansk,

t..

daniel89civ

torque

daver

ya one of my compression gauges gave me 185 lbs each and my other gauge read 202 on the first cylinder. That's with WOT, a warm engine and 7 cranks.

they do sound a bit high tho, as does the 240 on the b16. they're usually around 225's, no?

d

tinkerbell

my 1st gen B16 was giving all 210's last time i was checking her.

this is the 10.2:1 block.

HTH,

t..

CWBETB

StorminMatt what kinda 1/4 mile #'s are we expecting with this setup? Im pretty curious my ZC Turbo with 5 pounds is about the same Dyno results as your B20z but with a little more torque up high. Are you thinking mid to low 14's?


[Modified by CWBETB, 3:42 AM 8/14/2002]

StorminMatt

Well, the suspension, tires, and wheels are not really set up for good launching. I have found with my CRX that all of this has a PROFOUND effect on my ETs. Basically, the suspension is stock Civic STD. The wheels are 14 inch alloy 1986-1989 Integra wheels and 195/60/14 Falken Azenis. And I am not particularly gifted when it comes to launching. The best time I have ever run with this car is 15.0 at 92.6MPH.


[Modified by StorminMatt, 4:02 AM 8/14/2002]

rex_boy

Is this vtec? If not any plans to put a vtec head on it? I would like to see the number then.

SuperCivic

very awesome stuff! and consistent w/ most of the other info i've found on this motor..heh, i too have been in the process of dropping a b20z in my EF..i'll be driving the car for the first time today. matt, what are your driving impression of this car vs. your b16 rex around town?

StorminMatt

As you have probably heard at least a thousand times, the big story with the B20 is the torque. Simply put, it has torque like no other B-motor has. The B20 truly gives a CRX real 'big car' torque - while still being easy on gas. Even the B18B, which alot of people call 'torquey', just does not come close. Perhaps one of the most interesting things about the B20 is the fact that you can be fast on the street without sounding like it. Because when accelerating away from a light, you race away from the rest of the pack even if you use light throttle and shift at around 4000RPM. It's always kind of funny to hear another Honda try to keep up with you when you have this motor. You kind of laugh as you hear their motor winding out in some mad attempt to keep up with you.

Mountain drives are also quite fun. With most cars, you often find yourself shifting quite a bit when trying to maintain speed on hills. But there are few hills on major mountain highways that cannot be climbed in fifth gear with an LS transmission. Sure, the B16A can also climb hills in fifth. But the gearing is quite a bit shorter. There is just something really neat about climbing a mountain pass at 80MPH with the throttle nowhere even close to being floored while the engine just hums along at 3600RPM in fifth gear like it was nothing.


[Modified by StorminMatt, 3:55 AM 8/16/2002]

tinkerbell

stop it, stop it!!!

you are teasing me! 4 weeks and i will be there with VTEC!

man, it is going to be so much easier to drive than the B16A,

no crazy shifting, just smooth torque to 5000rpm tehn VTEC past there if necessary!!!

t..

Bird333

Is the B20 harder to swap into an 88 civic standard than a B18?

bullz

Sure beats a B18B.

Ham'ed Hatch

i always think the same exact thing.

SuperCivic

no, the b20 and the b18 are physically the same size.

matt, i finally got the b20 in and got it running last night..i am instantly in love.

JalopySiR

Go to http://www.hondatwincam.com, use the HP calculator. I think it is fairly accurate at giving a good guess, but of course you should get it dynoed. I can't wait to dyno mine...