Lets Talk d-series

**Mikecivic78** · 19-01-2013 11:20 AM

Originally Posted by mugen_ctr

quick one guys.... Ive been thinking should i ever need a new block can i simply just slap on my Y8 head onto a Y4 block? considering that coming across a Y8 is rare

That way i can still retain the Vtec head

cheers

here's the classic swap DIY. Dun forget the vtec wiring, and GL with that bastard crank pulley
http://www.civicforumz.com/civic-diy...-d16y8-171470/

**mugen_ctr** · 19-01-2013 06:29 PM

Originally Posted by Mikecivic78

here's the classic swap DIY. Dun forget the vtec wiring, and GL with that bastard crank pulley
http://www.civicforumz.com/civic-diy...-d16y8-171470/

ahh much appreciated cheers

**TheSaint** · 30-01-2013 11:25 PM

Originally Posted by mugen_ctr

quick one guys.... Ive been thinking should i ever need a new block can i simply just slap on my Y8 head onto a Y4 block? considering that coming across a Y8 is rare

That way i can still retain the Vtec head

cheers

grab a D16y5 out of a VTI sedan
should be almost a straight swap

**mugen_ctr** · 31-01-2013 03:23 PM

Originally Posted by TheSaint

grab a D16y5 out of a VTI sedan
should be almost a straight swap

ahh cheers bro, much appreciated

**Mikecivic78** · 31-01-2013 10:48 PM

Originally Posted by TheSaint

grab a D16y5 out of a VTI sedan
should be almost a straight swap

D16y5 is the econo box ek sohc vtec motor. It only makes 88kw. You dont want that one.

What you need is a D16y8(from the ej coupe), which makes 93kw, and a smidgen more torque

**TheSaint** · 05-02-2013 02:45 PM

not entirely true - the D16y5 and D16y8 are almost the same
they are both from VTI models of the EK/EJ platform
the D16y5 is from the sedan and the D16y8 is from the coupe

(dont quote wickipedia as their entry for the D16y5 doesnt reflect the specs of the audm VTI engine)

the major difference is the gearbox - which is tricky because they are both stamped as being S40 B000
the 'B000' part is usually reserved for the better ratio box's (ie D16y1, D16z6 and JDM D15b)
but the D16y5 has the poorer strength and ratios

the only big engine related difference is the intake manifold and vtec system
although it has vtec-e is is alot more aggressive than the old VEI system
it is more similar to the UK 3 stage vtec - can easily be modded to put down as much power as a D16y8
the D16y8 has a larger intake manifold plenum as well
but the head flow, injectors, ecu, cam etc etc are almost identical

the econo box engine from that era is the D16y4 - which is a pile of crap and has the most annoying wiring/ecu setup out of any honda
it also has a weaker and crapper ratio gearbox