I'm pretty sure the 340 are stock originals, so are the valves. When machine shop freshened the heads, he cleaned up valves and reinstalled them with original springs. Machinist said they were fine. The 901-16 are 5 years old. Maybe 8000 miles on them.
X heads will be coming apart for a diy port cleanup.
No luck on 901-16 pics. I'll try to get pics of stock ones in the next few days.
Both of these choices are available to me (paid for) so looking for "best" option.
I'm not looking for super high rpms. Just looking for a good strong street 340.
Looking at specs I've read they are pretty close lol
Thanks guys
Happy new years!
Used springs will have less per sq inch than new ootb because the heat cycling when in service. They lose around 7lbs.
Do they look the same?
Is it necessary? Idk, are you looking for a few extra rpms?
