I have a b20vtec:



Here it is, bought it from a friend ( yes i know it has a cam seal oil leak).

Here is the question:

With this setup approx. how much wheel hp should it make, EG hatch, obd1:

Stock b16a1 head

-b16a1 cams
-stock b16a1 Intake manifold

Stock 1996 b20b (lo compression version)
-rebuilt to stock b20b specs


Boltons:

-stock b16a ex manifold
-Fuel pressure regulator.
- Apexi ws2 catback.

My hp guess is 150whp and 130tq.

Anyone see similar setups? how much did they make?

I am in the process of building a time attack car, but I cant make too much HP for class reasons.

 

y dont u look in the dyno thread or read the rules

 

Thanks for the info, anybody else?

 

what do u mean anybody else ... are you for real .. like how are we sopose to know what your motor is gonna make ... we dont know who built it or how let alone how bad the thing was beat on .. not to mention it is very rare that any build will make close to what another one makes ... one person can build to exact motors to the last bolt and they could make differnt power ... stop lookin for guess put the motor in the car and dyno it and tell us what it made

 

No one can give you numbers, every dyno reads different. This kind of thread angers people

Looking at your setup, dont expect much. but you answered it your self 150HP give or take some, good job.

move along people nothing to see here

 

edm ef vti with b16a made 158whp and 123 wtq using the stock head,stock b20b low comp bottom end with everything else stock except for a mild tune,numbers were off a dynojet.

not sure if it would help though, just like everyone else said no 2 engines will make the same numbers since theres too many things that should be accounted for such as ,mileage,compression results, etc even the wear on your cams due to mileage will effect the numbers a whole lot not to mention humidity,air temp etc.

BTW the ef only had 70k miles on it and the head wasnt rebuilt,the b20b bottom end was claimed to have had only 25k miles on from a jdm importer from the states,who knows if thats true though!


P.S he did race another dude here with a rather stock crvtec (b20 high comp) and got raped even though it was a heavier ek!

 

Thanks for the helpful post, unlike the other 2 typical HT posts. I am sure a few people have came across this setup in the past and have an idea what the output would be.

 

dude there right...dont bench race. put it on the dyno if u wana know. but it will be weak so dont get ur hopes up. im guessing 140whp

 

I am trying to keep the HP lower and the TQ high, The class I am racing in is classed by HP no tq. Just seeing if anyone has built anything similar and what there results were.

 

i had same setup awhile back, stock b16 head thrown on stock b20b bottem end with boltons and made 190 and 134..... i was impressed, but upped comp with aftermarket pistons and put in some ctr cams and was in the 230s

 

O **** the dyno you use read really high.

I saw 167 whp and 130 wlb of torque on a dynojet with only stock head and stock b10b bottom.

 

not trying to shoot you down but......... sounds like your posting flywheel figures. care to share a dyno sheet?

 

on the lower compression bottom end?
did you have any bolt-ons?

 

If you are looking for high torque, you are driving the wrong car. No diss, but Hondas arent torque monsters...at all(unless its a K Series, and they dont make much torque close to their hp)

Take it to a dyno.

 

I'm guessing because the thing is basically stock that you will make a little bit less power than a good used stock engine because your friend most likely does not know what he is doing. Your high performance fuel pressure regulator will raise the impression ratio though.

 

OP, are you in TOronto and take this out of a 4dr DA?

Also, to others, does this mean OP can't rev past stock limit coz the bottom end can't rev that high??

 

if it is literaly stock head on stock bottom end i would take it past 7500 but that is just me

 

Just my opinion
if your class is rated by hp but not torque why don't you trade your b16a head with a p8r head with 403
i am sure the $$$ you spend on the vtec converson kit can buy a set of nice 403 not to mention it has a good low end torque
not to mention the reliability running everything stock
p8r head is going to run more reliable than the b20 vtec setup

 

b16a3 head( stock no port)
ITR header
GSR cams
JG edlebrock manifold
68mm tb
stock injectors
3" intake w/ v-stack

b20b(stock untouched 50k miles)
tuned on crome 91 oct. on open header 183whp and 139lbs. tq. SAE corrected

same motor but took out JG edlebrock manifold, 68mm TB and switch it to stock b16a2 manifold and stock TB with stock civic EX intake and filter box, re-dynoed 4 days ago, no tunning involved, unopend header through the 2 1/2 cat-converter and 2 1/2 piping and a stock muffler with 87 octane made 164whp 126lbs. tq. Uncorrected, and 159whp 123lbs. tq. SAE corrected. This was after a session at the track which ran 12.90's on MH 22 slicks and a whole lot of street beating for almost a year....

hope this gives u a little idea on ur topic. I kno no dyno reads the same but it should be close.

 

Yup, Im probably going to set the rev limit between 7-7.5k.

 

^Helpful post! I would be happy with 140whp and 120tq, so anything more then that is a pwr bonus. In my dx eg, mated to an ITR tranny, It should be decent coming out of the turns and hopefully put down more tq then the 1.8s.

 

very very close to the numbers I gave,the only difference is your using a 2.1/2 piping through a stock (probably non vtec) exhaust and intake vs the one I gave was through a 1.3/4 vti piping and a better vti intake plus 87 oct vs 98 oct(but in euro standards). all in all I think it is very clear to say a stock b16head b20b bottom end is pretty much 158whp and 123wtq through a dynojet if its a healty build.

conclusion: I would definatly go for a b20z bottom end and make an extra few hp's,those hp's will be the easiest and cheapest hp's you will gain IMO!

 

my stock b20b block with stock b16a head and itr intake manifold made 169.9whp and 130 torqe at 6900rpm on a mustang dyno.

 

here is a basic b20vtec I tuned similar to yours

Civic SIR 2000

B20B cylinder block
B16a cylinder head
B16a Intake, throttle
2.75'' short ram

 

I was guessing around 600 whp