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y5 head on y7 block?

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Old 11-02-2018, 10:46 AM
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Default y5 head on y7 block?

2000 civic lx auto with stock y7....off for headgasket repair and the machine shop said it wasnt worth fixing. I have access to a d16y5 head in great condition with 2500 miles after a rebuild that I can pick up for $100, however I can't find anything concrete on what is needed. Can I swap it on and just change the ECU to a Civic HX and be all set? any extra wiring needed?

Thanks
Old 11-02-2018, 10:53 AM
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Default Re: y5 head on y7 block?

head will not work.
Old 11-02-2018, 11:35 AM
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Default Re: y5 head on y7 block?

The pistons and rods in the HX are different. So no you can't just put that head on.

Though many D-series parts can mix and match, anything VTEC-E is quite a different animal. You have to swap quite a few parts to change a HX into something else or vice versa.
Old 11-03-2018, 06:17 AM
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Default Re: y5 head on y7 block?

...and the HX also requires an EGR system and a manual transmission or CVT.
Old 11-03-2018, 11:04 AM
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Default Re: y5 head on y7 block?

Eh, you can just leave the egr as is...still won't run right though.
Old 11-03-2018, 03:35 PM
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Default Re: y5 head on y7 block?

it will run, if that's all you care about. it'll run well enough to drive, but not enough to be considered a "usable" y5 head, basically
Old 11-03-2018, 05:33 PM
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Default Re: y5 head on y7 block?

best get something to engage all valves.
Old 11-03-2018, 10:57 PM
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Default Re: y5 head on y7 block?

12 outta 16 aint bad...
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