Vibration in MPS6 clutch pedal ?

[Doug_MPS6]

See my long post today on Blown engine theory re clutch vibration

[MPS2NV]

So can you confirm/test for a bent rod?

Yeah, measure the piston height throw the spark plug hole, remove sump and visually check or put oil preasure gauge and see whats happening

[Jvicamps6]

Cheers, So what tool is used to measure the piston through the spark plug hole?

[MPS2NV]

Cheers, So what tool is used to measure the piston through the spark plug hole?

make one, out of some thing straight and turn motor with a tool not the starter. Compair spark plugs for fowling

[Doug_MPS6]

Use a straight brass rod for the probe. Cut the end dead square but keep it a small diameter (about 1-2mm), then gently round it off, but not to a sharp point. It is softer than steel and so won't mark or score anything in the bore. Use a micrometer to measure the OAL differences between cylinders. Make sure your probe is inserted to as to touch the identical location on each piston crown. Set TDC or BDC at zero and note the difference in the full stroke. Take multiple readings in all cases, table and average them. Preferably use a magnetically-mounted micrometer with a suitable probe extension. You can hire them. These engines are easy as the plug holes give good access. Just don't drop any shit down there.

[Scaredycrow]

You could also consider getting the car into one of the decent performance shops around to get them to verify it. MRT, Tunehouse, MPSGARAGE would all be able to help you out.

[Jvicamps6]

ok thanks, should I be driving the car? I'm not at the moment but to get to these places is it safe to drive?

[Scaredycrow]

ok thanks, should I be driving the car? I'm not at the moment but to get to these places is it safe to drive?

Down to personal opinion on that one. If you do have a bent rod you are risking pushing it through the crank case... That said if your able to avoid high load you *might* get away with it.

The extremely cautious here will tell you to get it towed to be safe. Others might say just try to avoid boost while you drive it there. Entirely your decision mate, good luck.

[Jmac]

If its bend, I wouldnt say its safe.. Id tow it for peace of mind.
It could be nothing.. then again it could be.
Im not a very good gambler