This issue just arose, and i am guessing its the valvetrain. that is the only thing that i can think about that would make the noise. it vibrates and i can feel it down to the gas pedal. it only does this at very high rpms.

my car is turboed so maybe im floating the valves or something?

im getting valve springs and retianers soon but im just wondering if this is something else besides the valvetrain. anybody else have this happen to them?

 

I am thinking crankshaft bro, if you are getting vibration at high RPM...Get checked..

 

no way, if it was the crankshaft it would be all fucked up. its not misfiring at all, its just simply vibrating.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ForceFedIntegra &raquo;</TD></TR><TR><TD CLASS="quote">no way, if it was the crankshaft it would be all fucked up. its not misfiring at all, its just simply vibrating.</TD></TR></TABLE>

if u floated ure valve u would know it. my guess is it has nothing to do w/ ure powertrain. check ure axles and tires and tire pressure. uneven or mismatched tire sizes can cause vibration. a bad tune can also cause vibration. check ure mounts in ure engine too.

 

it does it when im not moving.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2SlowDC &raquo;</TD></TR><TR><TD CLASS="quote">

a bad tune can also cause vibration. check ure mounts in ure engine too.</TD></TR></TABLE>

 

what i mean is that i can take it out of gear, rev it to about 8000 rpms and it vibrates

 

bump

 

bad motor mount??

 

Have someone check your engine bay, while you rev your car...It's really hard to say, it could be many things!

 

it's most likely your mounts bub. So get 'em check out. I know how it feels, I just got my changed out. It's like a whole new car afterwards, too

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Last For One &raquo;</TD></TR><TR><TD CLASS="quote">bad motor mount??</TD></TR></TABLE>That's what I was thinking.

 

could be your rear mount also called transmission mount...