Hi all.

New member here so hi, and apologies if I posted in the wrong area.
I’ve built / building an st170 turbo but I didn’t forge it. I used a decompression plate of 2my and 2 x 0.6 head valets. I’m a bit stuck on the timing belt as I’m not sure how tight to do the tensioner. I think in the stock position it would be way to tight. Had anyone got any ideas on where it should be please ? Thank you