Syndacate

He probably meant 31...the 3 is pretty close to the 2...

Targa250R

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Syndacate &raquo;</TD></TR><TR><TD CLASS="quote">He probably meant 31...the 3 is pretty close to the 2...</TD></TR></TABLE>
He analyzed the 21 vs. the 31 though.

Techy

according to my numbers I eeked out 25 MPG vast majority city driving and indulging in VTEC often. Now take into account, city driving + hammering it regularly (18 year old lead foot what do you expect) + CEL so the damn thing is running in limp mode to boot. 25 MPG is pretty damn good for city driving out of a B16A2. If my CEL wasn't on, I'd be getting better. Also, hills ain't a prob for me (of course my car only weighs 2200lbs). Actually, my car has been praised for it's hill climbing abilities (compared to my old D16Z6 95 EX Coupe though, heavier car weaker motor and wider gears). I found that many hills I can actually leave the car in higher gears and still climb them. Basically whatever gear I was in to climb a particular hill in my old 95, I can climb it in the next gear up in my B16 96. Still with the whole gas thing yeah, B20 would be the choice so you won't have to use premium. I feel kinda weird having to pump 93 octane into such a crappy looking vehicle. But with resale, yes some teenager will look at the car and go "OOOHHHH VEETEK" if you drop a B16 in. How do you think I ended up with the shitbox I own now. I'm still kicking myself for not getting that 92 Prelude Si. The allure of the B16 was just too strong but I have fun with it now and it's slowly but surely shaping up.

Targa250R

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Techy &raquo;</TD></TR><TR><TD CLASS="quote">I'm still kicking myself for not getting that 92 Prelude Si.</TD></TR></TABLE>
Don't be. They're garbage.

justaquestion

I actually started tearing into the B16 Tonite, starting to get that stupid itch to put the B20/Vtec together again lol. I ran premium in the other two I had, but one was running high compression pistons.

From previous posts, it looks like I can run 87 oct if the bottom end is bone stock. This is the 8.8:1 bottom end. And I already have a stock 99 SI ecu, I probably won't even get into vtec except to pass people on some of our 2 lane roads.

I happen to find the Morosso Catch can system off my old drag car tonite, maybe thats a sign If I can get a reliable 30+ mpg and be able to torch the ocassional wanna be with a fart can, thats all I really need.

I have to say, all the years I've been messing with this stuff, this is a good forum! the couple others I had seen were just kids calling one another names. Thanks for all the help!

vtec4lyfe

don't worry about gas mileage worry about speed!

Syndacate

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Targa250R &raquo;</TD></TR><TR><TD CLASS="quote">
Don't be. They're garbage.</TD></TR></TABLE>

I agree.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Targa250R &raquo;</TD></TR><TR><TD CLASS="quote">
He analyzed the 21 vs. the 31 though.</TD></TR></TABLE>

Oh, I see.

My bad. .

komat

with my lsvtec i get 37.5mpg in the highway at 70-75mph. city 20-24mpg depending on how hard i beat it everyday

Berman

B20b's n/v's are all good, I cant give you MPG (because I'm in a km/l country and I never really bothered with gas figures anyway) but I made 105fwkw on my b20b with I/H/E, no tune, and love how I could pass cars without shifting and accelerate up hills in 5th too. My other car is factory b16a2 and you have to shift to go anywhere. Torque is where it's at. at a guess I'd say both would be around the same fuel consumption B20b is now 9 years old and been beaten on by me for four years. now it's vtec (JDM ITR head, same I/H/E, otherwise stock).

HTH

justaquestion

Alright, its offical, I've got to do the B20, and yes, I'm going to rob the head off the B16 and slap it on. Found a Nippon head gasket still in the package, a new GSR water pump/timing belt, a pair of new Integra Axles, and just picked up an LS trans rebuild kit for cheap. So looks like I have a new project! Amazing what happens when I start looking through old crates and boxes. I even found some 370 injectors, but I'm going to keep the fuel etc stock, I really want to try and eek out that 30+

I's sure its been done 100 times, but I'll take photos of the swap.

If anyone needs an LS head, let me know, the head off this B20 litterally has less than 1000 miles on it.

Berman

Dont need the injectors, b series vtec injectors are good for up to 150fwkW

Good luck with build 3

goldegg

Ive gotten 40.5 mpg in my 92 vx with a gen2 b16 and a b16 tranny.

aslong as your driving around 60 mph and under on a highway youll get good mileage.

people who say the b16 has no torque for getting good gas mileage,

were trying to get good gas mileage here, so theres no need to race off the line.

i can put my b16 in 5th at 2800 rpm and its still fine since the gears are faily short and the cars light.

Syndacate

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by komat &raquo;</TD></TR><TR><TD CLASS="quote">with my lsvtec i get 37.5mpg in the highway at 70-75mph. city 20-24mpg depending on how hard i beat it everyday</TD></TR></TABLE>

What type of trans were you using?

Targa250R

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Syndacate &raquo;</TD></TR><TR><TD CLASS="quote">What type of trans were you using?</TD></TR></TABLE>
Had to have been either GSR or non-VTEC gearing. A B16/ITR trans won't average 37mpg at 70-75, even with a B16A attached to it. They turn about 4000 RPM at 75 mph. You have to stay under 60 mph to get into the upper 30s mileage with a B16/ITR trans. I could average 35-40 mpg on my commute with the EM1 if I short-shifted up to 5th quickly and never revved it over 2500 (which meant a max top speed of 45mph).

Tuesday Club

Go B20....I get 23-29 mpg w/ mine.

(the torque makes it the obvious choice)

mhart

b20

komat

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Targa250R &raquo;</TD></TR><TR><TD CLASS="quote">
Had to have been either GSR or non-VTEC gearing. A B16/ITR trans won't average 37mpg at 70-75, even with a B16A attached to it. They turn about 4000 RPM at 75 mph. You have to stay under 60 mph to get into the upper 30s mileage with a B16/ITR trans. I could average 35-40 mpg on my commute with the EM1 if I short-shifted up to 5th quickly and never revved it over 2500 (which meant a max top speed of 45mph).</TD></TR></TABLE>

b16 4.4FD 3900rpm the whole time
a/f was around 15:1-16:1. car is tuned by evans
i tested it with two trips which both were 250miles. first trip was 36 something . 2nd was 37.5. i did both trip within 2day.

your em1 is alot heavier then my hatch.




Modified by komat at 2:42 PM 1/24/2007

Glen Tennis

Ive had both engines in my car. I had a JDM B16 SiR II and it got around 27 mpg in the city.

My B20 I have now gets about the same, a little less, like 26 city / 29 hwy

just being honest.....

justaquestion

for the 1mpg diffrence, I'll do the B20. Seems like its worth it for the torque. Just didn't want to end up with 20-22mpg. As soon as my LS trans gets back from the shop (new syncros) I'll start posting build photos

Targa250R

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by justaquestion &raquo;</TD></TR><TR><TD CLASS="quote">Just didn't want to end up with 20-22mpg.</TD></TR></TABLE>
Yeah, you won't be anywhere near that. Even 4WD automatic CR-Vs do a bit better.

Glen Tennis

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by justaquestion &raquo;</TD></TR><TR><TD CLASS="quote">for the 1mpg diffrence, I'll do the B20. Seems like its worth it for the torque. Just didn't want to end up with 20-22mpg. As soon as my LS trans gets back from the shop (new syncros) I'll start posting build photos</TD></TR></TABLE>

Yeah, as I said before I have had both motors and my B20 is just as fast if not faster than the B16. I have gotten the same 1/4 mile times out of both. And in my opinion the B20 has more potential, it has more potential to uncork power.

one bad dx

I know this has been covered by now but just some food for thought.......

My EF hatch w/JDM b16 obd-0 with JDM B16 trans = 28mpg city + 34-36 highway

My EH coupe (95 ex) with a system in it + LS/VTEC I/H/E and JDM B16 at 4.40 F/D was getting 28 city and 34 highway

Same motor into an EG chassis with a LS tranny (B16 blew up, got some nice pics to share ) was 32 city and 38 highway.

B20 into my 4-door teg to come soon but I'm expecting probably 32ish with my current GSR trans thats mated to my LS motor.

So all in all, unless your meniscus is shot like mine do yourself and your knee a favor and just rock the b20 and suprise people at the stop light every once and a while

alferi

HI to all Am wondering if any one has done the poor mans v-tec trick with the B20 High compression motor - What I have done with B18B1 's from my 96 and 97 Integras is run the engine in a 12 valve mode -One intake two exhaust by disabling (removing) the cam lifter on one intake valve each cylinder and plunging the lifter rocker pivot with the correct size bolt so no loss in oil pressure would occur - Saw about 4 mpg constant increase in gas millage and a Colorado emissions testing of 49 percent of hydro-carbons reduction - Car runs fantastic -

So since I have to now replace my 1997 original engine after a mere 249,000 miles -I'm thinking about the B20B high compression engine and doing the same trick -

This may just make the B20 motors a lot more desirable for those of us who want great gas millage -- Alferi

NotARaCist

iTrader: (1)

9 year old thread

"Car runs fantastic", on 3 valves?

alferi

Yes -car runs extremely well with one intake valve and two exhaust valves functional per cylinder or 12 valve mode - Extremly good scavanging on the exhaust cycle So the intake charge stays really pure !!! -Mulit stage honda v-tec- run this configuration in the economic mode so it isn't as strange as it may sound - This design config actually was tried for racing maybee 60 years ago -- alferi