What does this mean
Thread Starter
Registered User
Joined: Apr 2010
Posts: 4
From: colorado
What does this mean
HI,guys im new here i have question,93 z28 resent rebuild .15 bore took my left side header off, first two exhaust ports are wet,last two are dry any ideals ,doesnt smoke, idiles rough but has a cam xfi 268 113, wot seems good.
Registered User
Joined: May 2006
Posts: 1,855
From: Ohio
.15 bore took your left side header off? I am confused.
This is a blind guess but sounds like a leaking injector, a dead cylinder, that xfi cam is quite small
XFI 268 specs
Operating Range: 1800-5800 RPM
Duration Advertised: 268° Intake / 276° Exhaust
Duration @ .050'' Lift: 218° Intake / 224° Exhaust
Valve Lift w/1.6 Rockers: .570'' Intake / .565'' Exhaust
Lobe Separation Angle: 113°
So if its idling like a race car, something is indeed wrong. Maybe unplug an injector from the wet cylinder and then move to other cylinders to see if it runs any different. I am sure someone else can give you better advice.
This is a blind guess but sounds like a leaking injector, a dead cylinder, that xfi cam is quite small
XFI 268 specs
Operating Range: 1800-5800 RPM
Duration Advertised: 268° Intake / 276° Exhaust
Duration @ .050'' Lift: 218° Intake / 224° Exhaust
Valve Lift w/1.6 Rockers: .570'' Intake / .565'' Exhaust
Lobe Separation Angle: 113°
So if its idling like a race car, something is indeed wrong. Maybe unplug an injector from the wet cylinder and then move to other cylinders to see if it runs any different. I am sure someone else can give you better advice.
Registered User
Joined: Jan 2007
Posts: 298
From: Flower Mound, Tx
Maybe he meant .015 over? Not a normal bore size though. Probably need to stop with the short hand typing, and just explain in detail what you are going through for someone to be able to try and help you.
Last edited by texas97z; Apr 29, 2010 at 02:02 PM.