Shifting and rumbling problem
 

So i finally took my FC out for a spin after i changed the spark plugs, changed the belts, and the thermostat.

Whenever the clutch engages or put a load on the car by steppin on the gas, it makes kind of a clunk sound. and vibrations start at a certain speed.

So theres a shifting problem and a vibrating problem.

Can anyone tell me the problem here and the solution to it? Thanks.

Had the same problem... turned out to be buggered clutch and rear gearbox mount sagged.... so... off it went for new clutch, got gearbox rebuilt, new gearbox mount and tail shaft remanufactured.... get it back in two days from now... $2000 aussie later hope it stops the prob.

gearbox mount = transmission mount?

im sorry, i dont understand that terminology, is that australian?

hm, can anyone else help me out with this problem? i dont want to just replace parts and hope it works.