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ueyedgr8tness
12-05-2010, 12:22 PM
So its time to throw another motor in my beater and i was looking around trying to findout the best route to go $ wise considering the car is just a, a-b car any thought on which way is less cost effective ? swap motors, go back with stock, rebuild 1 in it?? and its in a 91 prelude.
JDMJAYDC2
12-05-2010, 12:45 PM
depends on your goals for the car longterm a h swap is rare for this car but can be done easily the b21 you have in there are easily found at most junkyards pulla part as ive seen them first hand mostly around 125k to 221k so you may have issues and you may get lucky and it run like a champ
gsrcivic
12-05-2010, 04:57 PM
my buddy had one for his dd and when the b21 went he put his turbo ls motor he was building in it
ueyedgr8tness
12-05-2010, 06:39 PM
im only looking to drive it for another yr mabye this car is just for work nothing else so i am not trying to make power.I can't seem to find 1 in junk yard :(
iamdallas
12-05-2010, 07:37 PM
im only looking to drive it for another yr mabye this car is just for work nothing else so i am not trying to make power.I can't seem to find 1 in junk yard :(

B20a is a good motor. It's an easy swap (from what I've read) from a b21 too. It makes a little more power and you can buy them online for pretty cheap. I don't know what your range is though. I'm sure you can get a really dependable one in your car for well under a grand.

Dunno... maybe someone with a little more know how can confirm.
civic gsr
12-05-2010, 11:01 PM
check nad auto
ueyedgr8tness
12-07-2010, 07:21 PM
^ k thanks
gerardojdm
12-07-2010, 07:29 PM
From what I know about B-series motor, B21A1 is the worst motor to build. I might be mistaking but B-series parts aren't interchangeable with B21A1. Do more research before you buy it.
iamdallas
12-07-2010, 07:58 PM
From what I know about B-series motor, B21A1 is the worst motor to build. I might be mistaking but B-series parts aren't interchangeable with B21A1. Do more research before you buy it.

B series parts are not compatible with the b21a1 or the b20a (and anything in USDM 3rd Gen Preludes)... They're considered predecessors to the B series. So yeah like ^^ says. Be careful with that.
ueyedgr8tness
12-09-2010, 06:36 PM
From what I know about B-series motor, B21A1 is the worst motor to build. I might be mistaking but B-series parts aren't interchangeable with B21A1. Do more research before you buy it.




I dont want to build it. I just want a reliable motor back in it because it is my dd. And if it came down to it i would rebuild the stock motor but id rather not.