theramz Posted October 2, 2018 Share Posted October 2, 2018 Anyone have experience installing 280 valve and seats in these heads? Specifically the seats, is there any worries about machining into the water passages? Quote Link to comment Share on other sites More sharing options...
JMortensen Posted October 2, 2018 Share Posted October 2, 2018 I had them done on my E31, didn't do it myself. No problems. If you think about it, a LOT of heat transfers from the valve to the seat. It wouldn't make sense for that area to be really thin. Quote Link to comment Share on other sites More sharing options...
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