I have a 2000 civic ex bone stock d16y8 that the bottom end is trashed.
I have access to a d16y7 what does it take to swap from a y8 to a y7.
Also I've came across a lot of sites that sell engines who do you recommend and who do you stay away from?

 

I may be wrong, but the bottom end of a Y8 and Y7 are the same?

the top end is the difference

 

Swap the blocks, every thing else stays the same.

 

I'll be a little more specific the y8 is coming out of the car.
The y7 is going in.
I want to reuse the y8 harness and auto trans that is already in the car.
What ecu, intake, distributor etc?

 

I was under the impression there was a difference in the pistons?

 

Just do it, minor differences.

 

Does this help at all?



D16Y7

Found in:
1996–2000 Honda Civic DX/VP/LX/CX
1998–2000 Honda Civic Special Edition – SE/EX(Canada)
1996–1997 Honda Del Sol S
1996–1997 Honda Civic Coupé LSI
Bore and Stroke: see D16 Series Engines
Displacement: see D16 Series Engines
Compression: 9.4:1
Power: 106 hp (79.0 kW, 107 ps) at 6,200 rpm
Torque: 103 lb·ft (140 N.m) at 4,600 rpm
Redline: 6,800 rpm
Rev-limiter: 7,200 rpm
Valvetrain: SOHC (4 valves per cylinder)
Fuel Control: OBD2-a MPFI
Head Code: P2A-2
Piston Code: P2E
ECU Code: P2E
Cam Gear: 38 Tooth

D16Y8

1.6 litre 16-Valve, SOHC VTEC Also available in New Zealand under the code D16Y6

Found in:
1996–1997 Honda Del Sol Si (US)
1996–2000 Honda Civic EX (US, UK)
1996–2000 Honda Civic Si (Canada)
Bore and Stroke: see D16 Series Engines
Displacement: see D16 Series Engines
Redline: 6,800 rpm
Rev Limit: 7,200 rpm
ECU Code: P2P
Piston Code: P2P
Fuel Control: OBD2-b
VTEC switchover: 5,600 rpm
Power: 127 hp (95 kW) at 6,600 rpm
Torque: 107 lb·ft (145 N·m) at 5,500 rpm
Compression: 9.6:1
Deck Height: 8.347 inches
Rod Length: 5.394 inches
Curb weights:
96-98 coupé (MT/AT): 1,116 or 1,132 kg (2,460 or 2,496 lb)
99-00 coupé (MT/AT): 1,140 or 1,161 kg (2,513 or 2,560 lb)
96-98 sedan (MT/AT): 1,142 or 1,165 kg (2,518 or 2,568 lb)
99-00 sedan (MT/AT): 1,140 or 1,162 kg (2,513 or 2,562 lb)

 

I wouldn't do that. IMO, it's much easier to swap the blocks.

You'd need to source a auto DX ECU. but everything else is bolt on, however you may run into a little issue with the air pump thing 99-00 got.

Slight compression difference.

 

Head on the y8 isn't any good either.
What is the air pump you are talking about?