okay. so some of you may have been following my z6 build-up. (12:1 c/r)

i went to go start it and i prep-ed the fuel pump(turning it over with the plugs out) and it sounded great.
i put the plugs back on and i herd a big POP, so i stoped and inspected everything. i found my plug order was off, and im also starting this running 87(im putting 94 in tomorrow)

would that POP been caused by the octain being too low, or detonation problem?
any input would be greatly appreciated... im a bit worried..

 

No answers for your question, but DAMN that engine is clean! What's the set up?

 

D16Z6 12:1 C/R
PM6 Pistons
LS Rods w/ Crower Bushing Kit
Head Milled 0.04"
Zex 59300 Cam
Zex Valve Springs
ARP Head Bolts
ARP Rod Bolts
Crower Valves .5 Oversize
AEM Tru-Time Cam Gear
MSD Ignition Wires
ACT Street-lite Clutch
ACT 11lb Street-lite Flywheel
SRR 4.9 Final Drive
JG Edelbrock Pro-Flow 1-Piece Header
Portmatched Intake Manifold and Throddle Body
Stage 2 Port & Polish w/ Portmatch
B&M Fuel Pressure Regulator w/ Guage
Custom Chipped P28 ECU

 

You answerd your own question man, your firing order was off and the plug fired when it wasnt supposed to.. That caused the pop.

Dont run 12.1 on 87 oct.. is it really worth ruining a motor,, Take off the fuel line and stick it in a gas can and have someone turn the key and let the fuel pump, pump it all out into the can, then replace the line and fill with 93.

 

What Tbone said ^ don't risk running 87 octane on 12.1 compression, you will be sorry. And considering you don't even have it tuned yet your asking for more problems then, a miss matched firing order. Just trying to help you out my friend. What kind of fuel management are you going to be running?

 

ya. i WILL be running 94. i just ended up putting my car into storage 7months ago w/ a full tank of 87...
im just going to drain the tang and lines and get a can of 94 tomorrow and try again w/ the correct plug order and more octain. lol

im currently running a custom chipped p28 ecu.
im debaiting getting a VAFC or redoing the whole hting with the hondata s200

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tbone &raquo;</TD></TR><TR><TD CLASS="quote">your firing order was off and the plug fired when it wasnt supposed to.. That caused the pop</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TERRANCe &raquo;</TD></TR><TR><TD CLASS="quote">

im currently running a custom chipped p28 ecu.
im debaiting getting a VAFC or redoing the whole hting with the hondata s200</TD></TR></TABLE>


VAFC2 and bigger injectors will work very well. Or, ask Birt how we fuel the rally car at 12.2:1. It's cheap and fabulous, but not recommended.


Good luck with the engine.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tbone &raquo;</TD></TR><TR><TD CLASS="quote">
Dont run 12.1 on 87 oct.. is it really worth ruining a motor,, Take off the fuel line and stick it in a gas can and have someone turn the key and let the fuel pump, pump it all out into the can, then replace the line and fill with 93.</TD></TR></TABLE>
Amen, dont even chance it..