vibratation!!!!

[1fstss]

car is acting up, has a rotational vibration and a loss of power of sorts... car idles fine, has good oil pressure and the boost climbs. when i rev the car up with the clutch in and in gear the car will move forward... is it a warped flywheel? im at a loss and would like some ideas before i start ripping and taring.

[lozanoa11]

When do you get the vibration?

[1fstss]

whenever i give it gas... i couldnt even stage my car over 2500rpm at the track because it was lurching forward.

[1BADAIR]

what clutch/master?
warped flywheel shouldn't cause an vibration while the pedal is down
if the master is adjustable then you need to make it longer

[1fstss]

its the mcleod street twin with adjustable master, i have adjusted it longer and longer it goes away then a couple days later it comes back, even though its not engaging when i adjust it it still vibrating...

[1BADAIR]

pump the pedal a few times then slowy let up to about an inch off the floor.(have to do this where its quiet) and hold it there.
feel/hear for a clicking or the pedal dropping.
if it is i bet the master is bad. I have 2 brand new masters setting here that I am trying to get a refund for.
the vibration is something else.
I guess the clutch could be loose or something. maybe the PP is loosening up and causing the adjustment issue too

[2002Z4CSS]

Sounds like the clutch is not disengaging if the car moves foward with the clutch pedal depressed. Maybe the vibration is the due to the clutch.

[lozanoa11]

also make sure the lines are bled correctly.

[1fstss]

it was fine for a while and this is a problem that developed after i was giving the car a stress test (spanking on some mustangs) i can make the clutch not engage by adjusting the master but the vibration is always there.

[prorac1]

check your crank hub, maybe you spun the hub on the crank. How much boost, what blower, Eric L

[1fstss]

18psi on a F1A Procharger.

[prorac1]

Is the crank pulley keyed?

[1fstss]

yep the crank is keyed.

[prorac1]

I would make sure it didnt spin on the hub. Could it be a fuel issue? Eric L

[1fstss]

if its a fuel issue theres something major wrong, it has 80lb siemens fuel injectors with duel intank walbro 255's (340 series pumps)