jack_am

Does anyone know the size and thread pitch of the bolts that clamp the turbine/comp housings to the CHRA on a T04Z?

I can't find anyone in the UK to supply them and don't particularly want to pay for shipping from the US on six bolts.

Copeland

iTrader: (42)

Which turbine housing are you using?

jack_am

Copeland

iTrader: (42)

I'm not certain on the T04Z but on my T04R it has M8 x 1.25 pitch, 16mm length bolts. Make sure you get high heat bolts, I think the Garrett part # is 400677-0816.

jack_am

Do they use a standard size spanner/socket? I was guessing they were imperial because the hex head is an odd size. 12mm too small, 13mm too big, 7/16 too small, 1/2 too big. The 1/2 fitted best, but it was touch and go on rounding them off.