Re: Sonex-A purchase - What to look for
Posted: Thu Jun 20, 2024 12:07 pm
bvolcko38 wrote:As I see it, the elephant in the room is Chinese parts made of Chinese materials.
I don't believe that the EMPI heads being manufactured in China is the cause of burnt exhaust valves on an aerovee but if you want US made heads just give MOFOCO a call. They will send you a set of US cast and manufactured heads that work with the aerovee including having them machined for the proper CC's, 92mm bore and using stainless intake and exhaust valves. They will even cut the second set of spark plug holes in each head for $100. These are the same heads that Sonex used to sell years ago before switching to EMPI. Two new 042 heads setup for an aerovee with dual plugs from MOFOCO is still cheaper than buying the Chinese manufactured EMPI heads from Sonex with their markup. The only downslide to the 042 heads is that the web between the valve seats is small and tends to develop a non critical crack over time. You could also buy the 040 or 041 heads setup for an aerovee with slightly smaller valves for less money if that is a worry for you.
Keith
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