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Old 05-22-2008, 01:03 PM   #1
joshuablair
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engine stamp

so i looked at the engine stamp and it says b20a with the numbers underneath 5024828. this engine is from japan cause after 30 000 km they remove the engine. so whats the stats on it? ive come to the conclusion that this engine is the 2.0si JAPAN B20A 160hp(119KW) 140 LB(190 n.M) TORQUE.
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Old 05-22-2008, 01:29 PM   #2
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Originally Posted by joshuablair View Post
so i looked at the engine stamp and it says b20a with the numbers underneath 5024828. this engine is from japan cause after 30 000 km they remove the engine. so whats the stats on it? ive come to the conclusion that this engine is the 2.0si JAPAN B20A 160hp(119KW) 140 LB(190 n.M) TORQUE.
you got it, jdm b20a. except those power numbers are only for when its used with the jdm ecu.
in a usdm car it only puts out about 145-150 crank hp, not 160.
the only difference between the jdm b20a and the usdm b20a5 engine-wise is the compression. usdm has 9.0:1 compression, jdm has 9.4:1
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Old 05-22-2008, 01:36 PM   #3
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thank you. know i know what i got. what type of header do i have?
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Old 05-22-2008, 01:43 PM   #4
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thank you. know i know what i got. what type of header do i have?
if it has a pipe coming out the left side(passenger) routing to your intake manifold it's the USDM header with the EGR pipe. otherwise it's stock JDM header with a square heat shield. (we can't guess for you without pics :P )
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Old 05-22-2008, 02:26 PM   #5
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160 was only for the 2nd gen prelude B20A (and some accords). If you got a 3g and this b20a bolts into it, then it's only got 145 to start with (and like moto said, thats in total JDM trim such as ECU and manifolds etc)
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Old 05-22-2008, 03:46 PM   #6
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hey if you do have the JDM header that doesnt have the EGR on the left i was wondering where your O2 sensors went? i got a B20A and the header that is on there doesnt have any holes for the O2 sensors
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Old 05-22-2008, 04:14 PM   #7
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The O2 was probably in the downpipe...
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Old 05-22-2008, 04:31 PM   #8
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the b20a exhaust manifold should have 2 o2 sensors on it. If it doesn't, then it isnt a b20a manifold.

Should look like mine (I have a b20a)


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Old 05-22-2008, 08:30 PM   #9
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Quote:
Originally Posted by danny_d19 View Post
the b20a exhaust manifold should have 2 o2 sensors on it. If it doesn't, then it isnt a b20a manifold.

Should look like mine (I have a b20a)


not entirely true. i also have a b20a, it doesn't have egr or o2 sesors on the manifold. it has a 'place' for them, but they're blocked off. Even the heat sheild has a place for the egr and the 02 sensors, but the holes for the 02 sensors are not cut out.

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Old 05-22-2008, 09:25 PM   #10
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/\thats incredibly odd
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Old 05-22-2008, 09:28 PM   #11
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/\thats incredibly odd
for realz

I didnt know that existed
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Old 05-22-2008, 10:08 PM   #12
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Alot of people who do b20a swaps just re-use the old manifolds from their car to keep from messing around with O2 sensor configurations and such.

As for that weirdo exhaust mani, maybe the JDMs switched to single O2 in 90/91?
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Old 05-22-2008, 10:24 PM   #13
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Maybe (although it would be 89-90 in Japan). Maybe that is a b21a exhaust manifold


Here's a pic from his cardomain showing the jdm heat shield. never seen one like it befor


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Old 05-22-2008, 10:38 PM   #14
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Definately weird, I see a PK2 intake mani. so I don't see why it would have a different O2 setup. Those crazy JDM'erz
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Old 05-23-2008, 12:46 AM   #15
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ive got the same header as you danny d19. whats the specs on that header? what r those blue things around your break fluid resivoir?
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Old 05-23-2008, 01:00 AM   #16
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b20a!!!! yay for u. im jk. yeah it's more than likely a b20a. so good luck with that
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Quote:
How many fuel injectors are there in a B20A5 Engine, 1 or 2?,
Looking to block off your EGR
EGR bung size on the exhaust manifold is m24x1.5
Nissan part number:14052-21R00
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Old 05-23-2008, 07:16 AM   #17
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Just like here in the US, they had the 2 different models of exhaust manifolds where the 2 later years of their 3g's had the O2 in the downpipe.

I assume Danny had the earlier version...Danny, what year is your JDM lude?
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Old 05-23-2008, 07:25 AM   #18
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yea mine looks exactly like the one that NCLude has showing and i dont really wanna use the usdm ex mani i think it looks funny with the EGR hole plugged up but i wouldnt mind it if i get a DCSports header anyone knows where i can get one??
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Old 05-23-2008, 08:36 AM   #19
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ive got the same header as you danny d19. whats the specs on that header? what r those blue things around your break fluid resivoir?
Reservoir covers

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Originally Posted by Daily Interlude View Post
Just like here in the US, they had the 2 different models of exhaust manifolds where the 2 later years of their 3g's had the O2 in the downpipe.

I assume Danny had the earlier version...Danny, what year is your JDM lude?
1988
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Old 05-23-2008, 12:10 PM   #20
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ha ha, i knew i had a pic of the heat shield somewhere! thanks.

yeah its got the pk2 manifold with the butterflies in that pic. i swapped on my b21 manni right after that pic.

i never really thought about that before, i guess it was easier to block off the holes rather than change the 90-91 wiring harness...
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