Hitchhikkr

Mixing Y stuff with Z stuff suspects that part of your problem is timing. Is it running hot at all? Did you have the head/block decked before? 11.0 is pretty damn rich even for that level.

How bout posting some logs? I highly suspect timing (mechanical and ignition) is your problem.

seerex

Yes thats a big NO, NO. y does not like anything but y; unless you really know how to get it going.

D16Y8-Z6

Y7 crank in my z6 motor.

seerex

Lol but you know how to set it up

daily driver

y8 block pretty much the same as a z6, right? except for few diffs like knock sens, oil pump/main seal housings, oil holes in crank, etc. still basically the same bore/stroke. i'm running wiseco z6 pistons so the comp height should match up w/ the z6 head.

it does get hot........not overheat.........intermittenly.....if its over 80* outside and i cruise the highway for more than 15-20min at 80mph(3500-4k rpm), temp will creep slighty and fluctuate from 1/3 (normal mark) to approx 1/2. OR after making 2-3 hotlaps at the strip it will heat up after i let out at the boards, raising rpms usually brings temps back to normal.

head and block were both decked last spring when the engine was assembled, and checked again for straightness when torn down mid-season to replace HG in attempt to cure mystery overheat.

ignition timing is set to 16* using an adjustable light at the single mark on crank pulley(w/ service connector jumpered). i have an adjustable cam gear and both cam/crank timing have been set to TDC.........marks line up at block/crank sprocket..........cam was set to TDC using single mark @ 7 o'clock posistion inner cover, then cam gear loosened and adjusted to take up slack and keep both cam/crank at TDC.

i feel confident that the mech/ign timing is correct, not so sure about timing in .bin file

sorry i dont have any way to log, or i'd be more than willing to share. i have an ECU that is fried w/ a logger hookup installed, can i transfer that to my ECU and if so, what software do i need?....something that works in conjuction w/ BRE or TE?........or separate program all together?

Minor Threat

Y8 crank pulley mark is not 16* it's 12* IIRC, check a shop manual to make 100% sure.

daily driver

using the center of the three marks on the y8 crank pulley would give me 12*............using the single mark on the y8 crank pulley w/ a timing light set to 16*, would give me the 16* that is specified for the z6 head, since it is for the most part a z6 eng, even though the block is y8.

what is IIRC?

Minor Threat

If I recall correctly

I hate adjustable timing guns, but what you're doing makes sense. I still don't trust the mech timing though with mixing and matching parts, I would not be surprised if you wind up needing a cam gear.

daily driver

why would i need a cam gear?

already have an adjustable gear for a z6 cam/head

if i were mixing it up w/ z6 head/y8 cam or vice versa i could see the need for matching y8 or z6 cam gear


i dont think the mixing that i've done is anything too crazy.........im bout 98.3% sure similar setups have been run.





really curious about the IAT temps................will the ECU pull timing if it sees temps out of range?


if it would help i can prob post a screen shot of ign tables or the .bin file

txdohczc

that crx is sexy!!!