Re: Exhaust heat control valve

Posted by Steve On 2018/4/2 15:29:33

Hello 41touring,
I have had success in removing the Exhaust and intake nuts by using PB Blaster, or, a combination of acetone and auto trans fluid. I forget the percentages to mix but I'm sure someone will respond. The spot you're in might lead to frustration and in trying to get the nuts loose cause the rusted nut-to-bolt shaft to break. Followed by drilling and extraction of said remnant. Now's the time to apply one of the above solutions and wait days if necessary for the solution to penetrate the corrosion. Heating the stuck nuts will sometime help. If any of the studs left in the engine that the manifolds slide on to have any signs of rusting/pitting I would change the studs so you can tighten the nuts to the proper torque without breaking a weakened stud. Hope this helps.
Steve