ive just fitted a 98 wrx gear box and diff along with a lightened and balanced fly wheel and exedy clutch to my99 uk turbo.
ive just been for a run and at low down revs something is vibrating but only till about 3000 rpm. it does not sound to bad, but i dont wont to shake my bottom end to bits. is this normal.
any advice plz

 

could be the turbo heat shield?

 

its not fitted

 

anyone help

 

im yet to see a decent spigot bearing when i have done clutch changes!

 

i didnt change that bit. could that be it and could it damage my engine

 

i've never driven a car with a knackered one but i have heard you get plenty of vibrations! They are only about £8 new so not worth messing about with really, however now your car is back together......

 

bummer

 

will it do any damage as im taking it for remap soon and would rather do it after

 

I had this! It was the heat shield on the up pipe. Took me two workshops to figure it out!

 

could be does the turbo heat sheld hold all that in place as i think its loose

 

just been for another run and it seens it only happens in first gear between 1500 and 2500 rpm