Questions on the A20

[89accordsalo]

Well since i just got a 89 accord lx and its my first car. I want to know why people have this kind of intake manifold on a A20 engine, and what kind do they use because i want to get one because im pretty sure this gains some horsepower but not lots.


and instead of this, the stock one


So yea and also new to the forums

 

[E_SolSi]

top one is fuel injected (A20A3 / A20A4)

A20A3 and A20A4
The A20A3 and A20A4 were the fuel injected versions of the A20A engines. They were run by Honda's PGM-FI system on a partial OBD-0 computer. The A20A4 gives a slightly higher power output because of not having emissions components. The A20A3 was offered in the 1984-1987 Honda Prelude 2.0Si, the 1989 Honda Accord SE-i, and the 1986-1989 Honda Accord LX-i.
Specifications

• PGM-FI
• Displacement: 1,955 cc (119.3 cu in)
• Bore:82.7 mm (3.26 in)
• Stroke:91 mm (3.6 in)
• Power:
  • 1986-1987: 110 hp (82 kW) @ 5500 rpm & 114 ft·lbf (155 N·m) @ 4500 rpm
  • 1988-1989: 120 hp (89 kW) @ 5500 rpm & 122 ft·lbf (165 N·m) @ 4000 rpm (12 valve)

bottom one is carbureted (A20A1 / A20A2)

A20A1 & A20A2
The A20A1 and A20A2 were the carbureted versions of the A20A engines. It was available in the 1984-1987 Honda Preludes as well as the 1982-1989 Accord DX and LX. They are the same engine, the only difference between them being that the A20A2 has no emissions components, so it has a slightly higher power output.
Specifications

• Exhaust: 4-1 Cast Manifold
• Induction: Carbureted 2bbl Keihin ( Feedback Carb )
• Displacement: 1,955 cc (119.3 cu in)
• Bore: 82.7 mm (3.26 in)
• Stroke: 91 mm (3.6 in)
• Power (A20A1):
  • 98 hp (73 kW)
  • 109 ft·lbf (148 N·m) at 3500 rpm

thats a lot more than just an "intake manifold swap"

 

[intenseneal]

Yep the top one is from a LXi. I had a 89 LXi years ago, it was my first Honda and started my passion. Benefits of the PGMFI system are, a bit more hp and better fuel economy. The PGMFI swap is not the easies to do and you will need to have some wiring skills. You will need complete intake mani from LXi with all sensors ect, ECU for LXi along with wiring harness. I would not waste my time on this swap. The A20 motor is only a single cam 12 valve head, made for fuel economy and low emissions. The head design has poor flow and restricts the performance that the larger 2.0L bottom end should have. Dot get me wrong I loved my 89 LXi. I had 16 inch rims, lowered it, had Prelude Si suspension and brakes, SRI, Pacesetter header that fit like crap and a cat back with Magna Flow muffler. I ran great but was slow, had to really push it to keep up with a stock Civic with D15.

 

[Don 7899]

I have a 1987 honda accord lx, and was wanting to swap to a fuel injucted intake manifold from an 86-89 prelude or lxi, but don't know all the parts I would need...I would greatly appreciate a list...and does the lx wiring harness support fuel injection or will I have to do some wiring?