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b20 difference

Old 25-Jul-2006, 06:16 AM
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b20 difference

If im doing a b20 vtec, should i get a

1) USDM older 96 crv b20
2) JDM any year b20
3) 99-00 USDM b20 Z



also, whats teh diffrence in blocks between a b20z and a jdm b20 ....
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Old 25-Jul-2006, 10:46 AM
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get a b20z....it has the phk pistons (higher compression)
The only difference between the two is the pistons....the b20b is like 8.8:1 CR and the b20z is 9.6:1 CR (or around there).
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Old 25-Jul-2006, 11:41 AM
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Like Andrew said, you could go with B20z block. The CR goes from 8.8, to 9.2, to 9.6.

But if you are going to rebuild the entire long block, then the pistons don't matter much.
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Old 25-Jul-2006, 03:14 PM
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and there's a few b20s that only came in certain cars that has a P8R head in jdm land. this head has intake valves the same size as the vtec heads but it's very rare. i don't know how much of a difference it makes but just letting you know.
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Old 25-Jul-2006, 03:35 PM
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Apparently, according to Honda, there are 6 types of B20 engines.
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Old 25-Jul-2006, 04:40 PM
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Originally posted by Nova_Dust
Apparently, according to Honda, there are 6 types of B20 engines.
i just searched and found 9 types of b20a engines alone

B20A

(16-Valve, 8 Cylinder, DOHC, PGM-FI)

* Found in:
o 1987-1990 Honda Prelude Japan Domestic Market
* This carries the same engine code as the original B20a above, but is actually a different engine.
* The serial number for these B20A will be: 5000001~

B20A2

(16-Valve, DOHC, PGM-FI)

* Found in:
o 1986-1989 Honda Accord Non-U.S.

B20A3

(12-valve, SOHC, dual side-draft carburetors)

* Found in:
o 1988-1991 Honda Prelude 2.0 S
* HorsePower: 104 @ 5800 (MT) 105 @ 5800 (AT)
* Torque: 111 @ 4000

B20A4

(12-Valve, SOHC, dual side-draft carburetors)

* Found in:
o 1988-1991 Honda Prelude Non-U.S.

B20A5

(16-valve, DOHC, PGM-FI)

* Found in:
o 1988-1991 Honda Prelude 2.0Si
* Power: 135 hp

engine using a pk-2 honda ECU based on oki83c154 processor (intel 8051 based with external ROM)
B20A6

(16-Valve, DOHC, PGM-FI)

* Found in:
o 1988-1991 Honda Prelude Non-U.S. New Zealand, and Australian Domestic Market

B20A7

(16-Valve, DOHC, PGM-FI)

* Found in:
o 1988-1991 Honda Prelude Non-U.S. UK, France, Holland, Norway, South Africa
* Power 150 [email protected] rpm
o Torque [email protected] rpm
+ Compresion ratio 10,5:1

B20A8

(16-Valve, DOHC, PGM-FI)

* Found in:
o 1988-1991 Honda Prelude Non-U.S. Russian, Swedish Domestic Market

B20A9

(16-Valve, DOHC, PGM-FI)

* Found in:
o 1990-1991 Honda Prelude Non-U.S. Finland, German, Norway, Netherlands, Russia, Argentina
* Power 140 [email protected] rpm
o Torque [email protected] rpm
+ Compresion ratio 10,5:1
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Old 25-Jul-2006, 06:10 PM
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The B20 (87-91) from the prelude is not to be comfused with the newer B20. They are a different family of engines and are not compatable whatsoever.
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Old 25-Jul-2006, 06:54 PM
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Originally posted by preludeking
The B20 (87-91) from the prelude is not to be comfused with the newer B20. They are a different family of engines and are not compatable whatsoever.
yes that's true....the rangerking has spoken
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Old 25-Jul-2006, 10:25 PM
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do rangers have vtec?
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Old 25-Jul-2006, 10:28 PM
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Originally posted by Chomar
do rangers have vtec?

m4d jdm vtak
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Old 26-Jul-2006, 05:34 PM
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Originally posted by 95civic_hb


i just searched and found 9 types of b20a engines alone

B20A

(16-Valve, 8 Cylinder, DOHC, PGM-FI)

* Found in:
o 1987-1990 Honda Prelude Japan Domestic Market
* This carries the same engine code as the original B20a above, but is actually a different engine.
* The serial number for these B20A will be: 5000001~

WHOA, 8 cylinder... I think somebody made a mistake somewhere along the way. 8 valve perhaps
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Old 27-Jul-2006, 02:45 AM
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lol
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Old 27-Jul-2006, 03:20 AM
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Originally posted by 95civic_hb



m4d jdm vtak
lol, so gay
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Old 27-Jul-2006, 09:23 PM
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i dont like the b20z because they cylinder walls are joined. however i have a b20 vtec and the normal b20b works awsome big power for me.
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Old 27-Jul-2006, 09:57 PM
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.....all the b20s excluding the gayludes have saimese sleeves dude. they're all the same....
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Old 28-Jul-2006, 06:42 AM
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the z has the joined cyclinder walls and the b doesnt
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Old 08-Aug-2006, 09:47 PM
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hey i havw a ?....if i wanted 2 put a b20 non vtec in a eg coupe...which b20 would b the best choice? and y
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Old 08-Aug-2006, 09:54 PM
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Originally posted by White_Sleeper
hey i havw a ?....if i wanted 2 put a b20 non vtec in a eg coupe...which b20 would b the best choice? and y
if your going b20 non vtec then the b20z would be the way to go. has 147hp as apposed to the 133 of the b20b. im pretty sure those are the right #s...
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Old 08-Aug-2006, 10:06 PM
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Originally posted by White_Sleeper
hey i havw a ?....if i wanted 2 put a b20 non vtec in a eg coupe...which b20 would b the best choice? and y
http://teknotik.com/product_sections...disp.php?id=64

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Old 08-Aug-2006, 10:34 PM
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ohh man...i have bin lookin so long for a importer..well more like 10 mins..lol....but ya...thanx alot
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