Vinhjamin8302

Hey guys a got an eg I'm lookin at with a rebuilt z6, p29 12:1 pistons, stock head and a few other mods not to mention a hondata s200, I was wondering if the motor was ok on 93 pump and didn't need anything more volitale?

JuggerNaut-CTR

I had a z6 awhile back with p29's and ran it on 91 pump. There was detonation and once it got tuned it disappeared. I personally would do a comp test on it.

B_Swapped93

all motor d-series is a major waste a stock b20 will put it in the ground and be cheaper, just pass on it. I've got a b20v with 12:5:1 on 91 pump tuned on Hondata no knock you'd be fine with 91.

Vinhjamin8302

What kinda redline were you guys pushin? It's got a crower cam with an adjustable cam gear, if I retard the timing a bit would that help detonation?

JuggerNaut-CTR

I had a 59300 cam with mine. Redline was 8200rpm.

Instead of trying to find little things to self tune the motor yourself, it would be in your best interest to just pay to get it tuned.

B_Swapped93

251@8850 there's room for me to go over but I'm loosing power after that, mind you mine is a different engine/set up then what we're talking about here. Yes in theory that will work however I'd suggest paying someone to tune it, while "DIY" is fun tuning is not one of them in my experience.

8.2K on a d ? hope that's with forged rods, balanced rotating assembly, arp main/rod bolts and ACL race bearings.

Vinhjamin8302

It's already been tuned by a shop but he says anything less than 93 will cause detonation the head was also shaved a bit

B_Swapped93

What EMS and where did you get it tuned ? I guess elevation plays into things to0, 13:1 is doable here on 91 even lol.

JuggerNaut-CTR

Was just a rebuilt oem bottom end. Power and oil starvation is what breaks things more times than not. It handled it fine and have seen a few others as well.

Going around the ?'s at hand. I would personally buy the biggest engine I could afford and work from there.

Vinhjamin8302

P28 w/ hondata s200

apexi_rsx

as for N/A building a D series is a waste u might see 160hp to the wheels .. when going N/A u want the most displacement u can get to make the most power. its all in the tune Honda recommends premium for anything over a 10:1 ratio ...

Vinhjamin8302

I see, the car was setup for autox so I think this was the sellers goal, the car is really clean tho no rust and not ebayed out

OldSchoolAce

If it was supposedly tuned already and the owner is telling you not to run any less than 93, then the car was tuned on 93, so use 93!

JuggerNaut-CTR

Pretty simple logic....I like it lol!