Ok, Iam building z6 with 75.5mm PG6's, unmiled head and stock z6 HG, compresion by "zeal auto werks" 11.8:1, but for start i wont have it tuned, cause of $$$, maybe just blinde tune with free crome or just P28 stock ecu and runnin on 93gas. Question is what is posibillity of detonation????

Thanks

 

nope you'll be fine,
i run 12.8 on 93 pump gas... Tune your car, you'll be fine.

 

Ok, I need some opinions... Now Iam rebuilding D16Z6 head, it will be stock for now, building z6 block with 75.5mm PG6 pistons, stock HG, ~11.8:1 CR... lightened OEM flywheel, OEM cluth... some ebay 4-2-1 header, got 60mm cat-back, one resonator in middle and muffler in the end... for start it wont be tuned, then, will try to get Y8 IM, if i cant, the i just take z6 IM, cut it up, will port runners a bit + b16 60mm TB, then port-matched intake and exhaust, and maybe a bit more porting work cause it will be my first

How do you think, how much whp could i get on this setup? befor tuning and after???

 

No idea,.. But if i had to guess and this is just a ball park value, i'd say mid 150s..