M20B25 head bolt reuse?

[spaulding5996]

Hi there

I have recently put a new head onto my m20 block and torqued the bolts on, half way through doing the bolts i realised that the angle gauge i was using wasn't working the way it was suppose to. my question is this, i know that head bolts are one use only but due to the engine have not being turned on and the bolts not heated/ cooled can i loosen them and restart the torquing sequence? or do i need to buy another set? thanks

[bmwdirtracer]

If you were into the final angle torque stage, you must not reuse the bolts. If you were on the first 90 degrees, you should be fine reusing them.