Have a set of mega power heads with M2 inserts. Are these inserts for srx or viper. Pump or race gas. Stock or big bore. Thanks.
staggs65
Moderator
someone posted the inserts on here a few years back. try some searches, you might be able to find it. Of course that doesn't mean the domes haven't been recut over the years. I know I've had 3 sets recut that are floating around out there so don't just go by the stamps
staggs65
Moderator
turns out it was one of my old threads lol http://www.totallyamaha.net/forums/showthread.php?82206-mega-power-heads according to the info there those are 780 domes
I remember seeing that post a while back and that's y I asked. I was told these were stock srx domes when I bought the heads . Hmmm
staggs65
Moderator
well it's easy enough to figure it out, just measure the bore size of the dome. 700's are 69mm and the 780 is 73mm