What we need to get the N54 to 9K rpm

I know full sleeves were looked at to fix the open deck. But it is hard to justify the expense with no failures. What I want to know is has anyone looked at a block brace or pinning. Properly done with cylinder honing it may be a good interim step. We already have Iron sleeves. My concern is heat but proper scalloping and drilled holes may maintain enough coolant flow.

This is already beat to deathI think. I mainly just want confirmation that the new valves are light weight enough to do 9K. We also need springs that can handle high backpressure but are going to handle the high rpm. Not sure how the current options compare to S54 spring options but it may be a lead.

A Blueprinted and balanced rotating assembly will be important but we need to reduce mass but maintain strength not sure how the current parts stack up on this but I want confirmation on what you think the rpm limit will be numbers wise. If we can't get there with current parts what are you thinking we need. Also are we using gapless rings yet. The biggest thing hurting reliability right now on the high boost motors is crankcase pressure. I want to fix that with a dry sump or vacuum pump but reducing blow by is important.

Not sure what will start failing at this engine speed. My biggest concerns would be the oil pump and HPFP. I'm planning on dry sump by the time I try and push the redline this much. The HPFP is a question mark? @Tony@VargasTurboTech do you have any input when you were shotgun testing? I think with the oil pump removed and possibly the hpfp you can improve the cam chain setup to make it a little more robust to rpm. Vacuum pump is another one but it isn't needed on a standalone boost control car with manual brakes. I think the alternator may be alright if not the pulley size can be scaled up a bit.