B20 myths.

Okay, since there seems to be so many different myths out there, regarding the B20. I figured I would get a little bit of information going here, on what I know about the b20. Now, I dont claim to be a b20 expert, but I do claim to know a little bit.

1- Yes, the b20 fits in our cars.
2- Yes, you need any B series cable trans to use it in our car (hydro conversion excluded)
3- Yes, 9 times out of 10 you will need to change the manifold to any B18(A)(B) intake manifold.
4- Yes you can run a OBD0 B20
5- Yes it can be daily driven
6- If you choose to go b20/vtec it still can be daily driven.
7- "Building it right" is not all that hard.
8- Any B series part will fit this motor (any bigger pistons, will have to be aftermarket though)
9- Any B series aftermarket mount kit will work.
10- Yes a B20 will beat a B16.
11- Yes a B20/vtec will tear up a B16
12- Yes a B20/vtec can hang, if not beat, the allmighty B18C's.
13- Yes, that is on a overall stock motor.
14- No, the B20/vtec is NOt unreliable, as long as you are smart about it. Dont try to rev a stock b20/v to 9k rpms. Keep it to closer to 8k rpms.
15- Yes, the B20 sleaves are weak, if you put any piston in there besides a stock compression.
16- Yes, if you want to build a high compression b20/vtec, you will need to get the block resleaved.
17- Yes I love my b20/vtec. :)

10- Yes a B20 will beat a B16.
11- Yes a B20/vtec will tear up a B16
12- Yes a B20/vtec can hang, if not beat, the allmighty B18C's.
13- Yes, that is on a overall stock motor.



God I wish I had the money and the time...

i need to get my b16 in already.

can you use a hydro instead of a cable tranny on a b20 in a crx?

can you use a hydro instead of a cable tranny on a b20 in a crx?
Not unless you do a hydro conversion, or spend the money for the hydro kit.

Must resist urge to put money in Beater Civic Si... *ugh* :icon16:

with all those positives, i am left wondering

-how heavy is the b20 compared to the b18c/b16/d series engines?
-how much does this affect handling?

cause i have no idea, but those are of course other considerations...

with all those positives, i am left wondering

-how heavy is the b20 compared to the b18c/b16/d series engines?
-how much does this affect handling?

cause i have no idea, but those are of course other considerations...


Damn near the same as a B18a,b since the are almost identical, except for the bore size.

whats a cable to hydro coversion kit cost about i plan on getting the hasport mounts
....

whats a cable to hydro coversion kit cost about i plan on getting the hasport mounts

hasport are the ones who sell the cable to hydro conversion kit. im not sure about pricing though. i dont really consider a hydro trans to be any better than cable...plus cable is much more adjustable. plus why spend the money on a hydro conversion when you can just find a b16 cable trans in decent condition?

go here for a b20 swap guide http://www.geocities.com/extremeist45/picturesofparts.html
here for b20 dynos
http://www.importreview.com/d_2.0.html
and here for more b20 info! :bigthumb:
http://www.b20vtec.com/frontpage.html

So what is the best trans to go with the b20 b/c i heard that a b16 cable trans was the best but isn't available in the US and would have to be ordered from Japan?

i hear to go with a gsr tranny with a b20...any of you other guys recomend that?

Is a b16 j1 tranny the best to go with on a b20. If not what is? If it is where can i find one and about how much do they run?

How much would a full b20/vtec swap cost? With the addition of "building it right? And can you use the motor mounts for a b16 swap for it? And the linkage?

b16 mounts and linkage yes can be used note:he did say that ANY b series mounts/linkage can be used.
cost, come on even I can estimate the cost, no because I'm too lazy too look up prices i would say off the top of my head $2500 with cost of motor, cable tranny, mounts, linkage, ecu, misc parts, and replacing all things you should replace when swapping(belts, fluids, gaskets, new hoses, etc.).

Interesting idea Kris to do this thread.

I wanted to do this swap in a car other than a fourth gen. but they absolutely cannot pass ref. so decided against it, plus its difficult I hear.

Good idea for a thread Kris :thumbsup:

Let me ask you this... If/when I do the B16 swap, how difficult would it be to swap in a B20 block later?

Good idea for a thread Kris :thumbsup:

Let me ask you this... If/when I do the B16 swap, how difficult would it be to swap in a B20 block later?



Juist involves pulling the motor again.

As for transmissions, you can use any of the following CABLE trannies:

YS1 - 92-93 JDm Integra Rsi and Xsi (optional LSD)
Y1- JDM 88-91 Sir (has optional LSD) best tranny in my opinion
S1/J1 JDM 90-91 Integra Rsi/Xsi
S1/YS1 USDM 90-93 Integra LS/RS/GS/Special Edition (good for turbo motors, bad for all motor

I am not sure of the 92/93 Integra GSR tranny code. But it should the same as the JDM Y1

That is it

Why is a S1 trans bad for a all motor b20 setup?

Why is a S1 trans bad for a all motor b20 setup?

the only reason i know of is because the gears are really long....but then again if your b20/vtec the long gears might not be too bad

its not gonna be vtec im gonna keep it stock...do u think i can run a 14 in the 1/4 mile with the stock b20 and LS trans

its not gonna be vtec im gonna keep it stock...do u think i can run a 14 in the 1/4 mile with the stock b20 and LS trans



High 14's yes.

The LS trans is not bad, I use it. But I would prefer the B16 tranny for the shorter gearing. This January I will be making a hybrid b16 trans, with the LS fith gear, hopefully.

Yeah im not goin to be on the track everyday so i guess i'll go with the LS so my rpm's aren't real high on the highway.

I decided to get the J1 trans will i be running a high rpm at low mph. In other words when i am on the highway will my RPMs be really high and kind of bad?

What is the difference in a b20 short block and a b20 longblock?

same difference as any short and long block. short block is the block itself, long block is basically a full engine

i was wondering if there is a such thing as a complete short block...the reason i am asking is b/c i bought a b20 short block but the guy said it was complete with everything.

there are complete shortblocks, that have pictons, bearings and all, you better find out before buying

i've been thinking about doing this swap for awhile. really happy i found this thread, it helped a lot! would it be better to keep the b20 stock, then turbo it, or would it be better to but a b16 head on there, then turbo it. any advice would be greatly appreciated. also, i think that the ls tranny would go better on the turboed b20 than the b16, right? correct me if i'm wrong. thanks in advance.

i tell you that i going off my friends opions...they said to....fully build motor itr head and turbo it....make sure its a b20b or z ....b20a are weak so i hear....

i tell you that i going off my friends opions...they said to....fully build motor itr head and turbo it....make sure its a b20b or z ....b20a are weak so i hear....


You cant use the old school b20a from the early preludes.

ya i know thanks i hear there weak and consist of welding shit out and not even worth it

I am not sure of the 92/93 Integra GSR tranny code. But it should the same as the JDM Y1
Its a YS1 also. The only way to tell the difference between the cable GSR and LS tranny is to count the teeth on the final drive. The 92-92 GSR tranny is a cable version of the JDM ITR trannies, very short. :naughty:

Why does everyone like b20 vtec so much !

Its a b16a bored out with weaker walls. that's all.!!!

Just stop wasting your money and get a toda bore out kit to push ya to a 1.8 or even 1.9 litter ! :D :evillol:

Why does everyone like b20 vtec so much !

Its a b16a bored out with weaker walls. that's all.!!!

Just stop wasting your money and get a toda bore out kit to push ya to a 1.8 or even 1.9 litter ! :D :evillol:
Wow, another misinformed ignorant know-it-all. :)

Want a MoTeC ExHaUst Too y0!

i wanted to go with a b20 to put in my 4th gen civic....but i thought it might be to heavy....but im not to sure on the situation......if i had the money though i would go with the b20 or b18c

sorry i was thinkin about the H series......

So tell me now how I am misinformed??? :sly:

b16 bored out with weaker walls? Uh, no.

it can share b series parts but that does not make it a bored out b16... there is more to it than that. i found an excellent article talking about how the b20 came about and talking about its cyl sleeves and stuff I will have to find that again

hey guys i took a break for awhile and posting in the right room...I was wondeirng if you could tell me what would be the best parts to put on a b20 block which i empty it out so i can go for a fully built turbo motor someone can tell me where i can resleave my motor or get the sleaves be nice thanks....

I was wondering if i need a longer cable to hook up a b16 cable tranny to a b20b. I was told that i needed a longer cable b/c the stock one isn't long enough? And if i need another actual cable what do i need to get it out of?

I was wondering if i need a longer cable to hook up a b16 cable tranny to a b20b. I was told that i needed a longer cable b/c the stock one isn't long enough? And if i need another actual cable what do i need to get it out of?
You do not need to swap clutch cables, but you do need a throttle cable from a 90/93 Integra.

I don't know if any of you all have ever heard of a guy named Kevin danials? He has a b20 with a b18 head (I Have been told),turboed with a t3/t4 turbo!

It is one of the craziest things I have ever seen, but he can' get it to run right! He has gone through 3 motors! If any of you all are from knoxville or powell, he is quite well known!

whats the best place take my b20b block and have them redo the whole bottom end sleeve it bore it and everything anybody have a good site to go to pelase post it thanks....

Its a YS1 also. The only way to tell the difference between the cable GSR and LS tranny is to count the teeth on the final drive. The 92-92 GSR tranny is a cable version of the JDM ITR trannies, very short. :naughty:

you are correct sir. i have it in my 88 hatch with a b16a. i rebuilt the tranny, it had a busted differential. everything went back together well, im hoping to finish all the other stuff on my car soon so i can finally crank it up and see how much better it is with an ACT clutch and the GSR tranny. i had an S1 before.

Yea, I had one and I had to rebuild most of mine too.

I don't know if any of you all have ever heard of a guy named Kevin danials? He has a b20 with a b18 head (I Have been told),turboed with a t3/t4 turbo!

It is one of the craziest things I have ever seen, but he can' get it to run right! He has gone through 3 motors! If any of you all are from knoxville or powell, he is quite well known!
Cody, you crack me up and are a little misinformed. :rofl:

Why does everyone like b20 vtec so much !

Its a b16a bored out with weaker walls. that's all.!!!

Just stop wasting your money and get a toda bore out kit to push ya to a 1.8 or even 1.9 litter ! ..........



ummm actually ive been told the b20 is a bored ls block....is that true?

noo how about in your ass lives out in cali i will race you for pinks and you get a b16 and bored it out and i will run you with my b20 that a deal?

hey kris i know your out there which would be a better compression ratio if runing turbo about 4 months after motor is done but i wanna put pistons in now and drive on that witha 100 shot nos when i race i deciding go with 8.5 or 9 for ratio let me know bud which one but when i do turbo i be running 20 lbs of boast on the crvtec

Nope, another misinformed groupy.

hey kris you have a good answer for my question not sure what to do

curious on what i should do with my b20 crank have a machine shop do some work on it or get an after market one but i dont wanna stroke the motor just trying see i can mess with the crank get some kind of power out of it

IMO, its not worth the effort. Just leave it alone.

About the only thing that I would consider having done would be to have the whole rotating assembly balanced.

ya i was just told that by a friend but he said to micro something and polish it and thats it he said

Whoa, I wish I would have spotted this Thread a LOT sooner. I am a girl with a b20vtec in my '94 4dr GSR and the guys in town don't give me enough props because they've got badass Nitrous in their b16 EX's. Anyhow, thanks for the heads up on this thread for the misinformed people :)

simply a b20 block bored .020 over, blue printed, hot tanked, forged JE 11.5:1 pistons. slap on a JUN head [yes, i am aware JUN does not "make" heads, I meant it was built by JUN, with JUN internals.] with CTR cams... I realized I can't afford my JUN cams...if anyone is interested, PM me :) Oh yah, an LS hydro tranny :)
LS- I know I know, I was in the market and didn't wanna pay 600+ for a tranny so I got the LS tranny for $300

:grinno: Have A Great Day!

whats the best tranny to go with with a b20vtec?

whats the best tranny to go with with a b20vtec?



If you are boosting, a LS tranny.

Do get your rotating assembly balanced, but dont get it knife edged, opr anything crazy like that. Look into a flywheel, but since you are boosting, dont go under maybe a 12lber. The lighter your rotating assembly is, the wquicker you lose boost.

Oh yah, an LS hydro tranny :)
LS- I know I know, I was in the market and didn't wanna pay 600+ for a tranny so I got the LS tranny for $300
You wont feel the true potential for that motor until you get a shorter geared tranny. Fork out the bucks.

BTW, screw the local guys. Mad Props. :smokin:

haha jeff