I'm not a historian either but I will tell you this story. I think many are forgetting when the 91fx came out. I owned two of them within the first couple months and returned them both with overheating problems and I was not the only one. This new 120AX has "pick me! pick me!
written all over it. I have several OS's and a big fan but the 91 fx is not reliable at all
I suggest you guys leave this thing alone for a while until all the suckers buy one and see how it goes. Design may over come the need for more head bolts. Whatever the case, I am sure that a G2300 at half the cost will have equal or better performance
ORIGINAL: cu. in.
I am not an engine historian
Bruce