Plenum bolts

[Act Daft]

Hi Guys

Trying to get the plenum off but the bolts are very tight, wont even budge with the air impact wrench.
I don't think its been off since its original build.

So as anyone had the same problem and what's the answer?

My thoughts are loads of penetrating oil and/or run it up to temp and see if the heat works.

Any Ideas?

Cheers
Tim

[Act Daft]

All done, engine heat did the trick