Interesting read, thanks for energy ones input. I just needed to ask because I don't trust my 20 year old head being ontop of my new bottom end, the valve guides look abit tired and one of them have a chip on it, engine builder told me it will be fine but this still doesn't sit we'll with me.
I was going to get new brass valve guides but I was told not to go down that path because even if it's seated properly that there's a chance they could fall out so I went with a brand new head.
A set of new oem nissan in and ex valves are just over $1000 but I can get the tomei ones for around $6-700. I was just wondering if it would be beneficial to go with the tomei or any other aftermarket valves as they look abit cheaper and if it will benefit the type of power I'm going for.
Would any of you recommend changing the valve springs if going 1mm valves?