z6 head or y8 head - Honda Forum / Acura Forum

96civichx · 05-21-2006, 09:57 PM

what head is better and y i have a 96 civic hx what head should i go with i heard there about the same and what manafoild my y5 or y8 or z6 and what ecu chip ? thanks

98civcEK · 05-22-2006, 08:48 AM

the easiest one would be to use the y8 head. if you were to use the z6 head you have to get a different timing belt. but with the y8 you can use the one you have.

doesn't the hx and ex have the same IM??? i thought it did. i have a y8 one on my dx.....so it gets my vote.

the chip......i would not just get a chip off ebay or whoever because, most are crap and just change the input signals. IMO the best way is to convert to obd1 and get a chipped p28 and tune it that way. but if you have emissions that is out of the question.

Slipjack · 05-22-2006, 08:51 AM

+1 to the above.

The y8 would be easiest. There have been "studies" done that the y8 head and intake manifold flow better, also.

kommon_sense · 05-22-2006, 08:52 AM

I'll put it like this... every high hp daily driven d-series that i've ever heard of was using a y8 head. The quench pads in the head handle high compression better than a z6 head.

96civichx · 05-22-2006, 11:36 AM

if i swap the head id pretty much have a ex car i have a ex tranny and if i get a y8 head it would b pretty much a ex inless the y5 block is diffrent u think i would have more compresstion with the y8 head on the y5 motor

98civcEK · 05-22-2006, 12:13 PM

Quote:

Originally Posted by 96civichx

if i swap the head id pretty much have a ex car i have a ex tranny and if i get a y8 head it would b pretty much a ex inless the y5 block is diffrent u think i would have more compresstion with the y8 head on the y5 motor

yup basically an ex. the compression may be slightly higher though. but not much

96civichx · 05-23-2006, 12:42 PM

higher then a ex motor its self cuz i have a y5 block? is a y5 block good anyone no

kommon_sense · 05-23-2006, 02:19 PM

afaik, the y5 block is fine.

96civichx · 05-23-2006, 08:41 PM

is it the same block as the y8 or better or not ? and by putting a y8 head on u would make more power then a y8 motor

flyingtoaster · 05-23-2006, 08:50 PM

Quote:

Originally Posted by kommon_sense

I'll put it like this... every high hp daily driven d-series that i've ever heard of was using a y8 head. The quench pads in the head handle high compression better than a z6 head.

What's a quench pad?

skunkshifting · 05-25-2006, 05:56 AM

Keep the y5 head and turbo you will produce more torque then horsepower!

kommon_sense · 05-25-2006, 09:10 AM

Quote:

Originally Posted by skunkshifting

Keep the y5 head and turbo you will produce more torque then horsepower!

turbo a 12 valve motor? The low lift on the cams in the y5 are going to hurt you...

kommon_sense · 05-25-2006, 09:12 AM

Quote:

Originally Posted by flyingtoaster

What's a quench pad?

An area of the combustion chamber that is designed to help control flame propagation. This helps reduce undesired hot spots in the combustion chamber which in turn helps reduce the chance of detonation. These pads make it easier to run high compression ratios and be able to tune reliably.