pistons

I am rebuilding my engine and plan to do some upgrades. I was about to order some forged rod and pistons but I have read that forged pistons expand more to heat and would cause piston slap and increased wear when the engine is cold. So basically every day when I start up. I am staying at or...

Hello, I'm Nick and I am currently trying to figure out everything that I will be needing to rebuild my engine(N54 2008 135i 8 Bolt Manual @174,XXX Miles) to OEM Spec. I am Planning to get Hydra HP650 Turbos and aim for 550hp with headroom. To my understanding, the stock n54 motor with no...

Pics attached. Car was misfiring due to oil on plugs from either leaking VCG or valve cover itself. Regardless, when I'm changing plugs I always like to use my endoscope to see the tops of the pistons to make sure they are healthy. This time they seemed a little more caked than before, should I...

Soooo... I've decided to post a bit about my build Starting with the story leading to my decision, So a few months back I had my oil pan gasket replaced. Upon removal of the pan we found shattered pieces of metal of what appeared to be a valve keeper and roller. I assumed it was from a...