Civic-EG.com Forum 3.3.1

- Fri Jun 12, 2009 8:33 am #122498 Can anyone say, what difference they have, Z6 is older, but is the Z9 then better?
The problem is, that my ej1 has a Z9 engine and the piston rings and so on aren`t in good shape, but i have a Z6 block that recently got new parts and has been driven about 5000 km. So my question is, are there any differences between those two blocks... if the Z9 is better, then i`ll just repair it and sell the Z6 block, if not then i`ll swapp it.

Thank you!

Last edited by Bobec on Fri Jun 12, 2009 2:22 pm, edited 1 time in total.

[teal_dx]

- Fri Jun 12, 2009 1:56 pm #122524 Here's what I googles up on the d16z9:

D16Z9
Found in:
1994-1995 Civic Coupe (EJ1) 1.6i ESi European
Displacement : 1,590 cc (97 cu in)
Bore and Stroke : 75 mm × 90 mm (3.0 in × 3.5 in)
Compression : 9.2:1
Power : 125 hp (93.2 kW, 127 ps) @ 6600 rpm
Torque : 106 ft·lbf (14.7 kg/m, 144 Nm) @ 5200 rpm
Redline : 7200 rpm
Fuel Cut : 7500 rpm
Valvetrain : SOHC VTEC (4 valves per cylinder)
Fuel Control : OBD-1 MPFI
ECU Code : P28

and the D16z6:

D16Z6
Found in
1992-1995 Honda Civic Si
1992-1995 Honda Civic EX, EX-V
1992-1995 Honda Civic ESi (European Market)
1993-1995 Honda Del Sol Si (US)
1993-1995 Honda Del Sol ESi (European)
Displacement : 1,590 cc (97 cu in)
Bore and Stroke : 75 mm × 90 mm (3.0 in × 3.5 in)
Rod Length : 137MM
Rod/Stroke : 1.52
Compression : 9.2:1
Power : 125 hp (93.2 kW, 127 ps) @ 6600 rpm
Torque : 106 ft·lb (14.7 kg/m, 144 Nm) @ 5200 rpm
Redline : 7200 rpm
Fuel Cut : 7411 rpm
VTEC Switchover : 4800 rpm[3]
Fuel Control : OBD-1 MPFI
Head Code : P08
ECU Code : P28

There's a little less info on the Z9, but it looks like they make the exact same power and have same bore/stroke dimensions and same compression.
I would bet that the z6 block would work fine

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- Fri Jun 12, 2009 2:20 pm #122533 Thanks, that helps alot, i`ll swap it! I`ve googled for Z9 too, some time ago, but the only thing i found was, that when Z6 became Y8, then Z9 was somewhere between