You'd be closer with the 14/63 than an 11/70 would be, I'd start somewhere more in the middle like a 13/63, rpm drop and momentum will be the key where you end up.We built a predator 224,to see what we get. Probably trying to get 7000-7200. And keep it in one piece.
Wouldn't an 11 68 cause the valves to float because of a super low driver and a higher gearId go 11-68. Ideally 11-70 but you’ll drag the rear gear in the dirt over anything 69.
Depends on what springs and valves are being used.Wouldn't an 11 68 cause the valves to float because of a super low driver and a higher gear
The answers you are getting based on this being an open class. As per original post.Wouldn't an 11 68 cause the valves to float because of a super low driver and a higher gear
I too thought this was an open class post. I’d be on a 12-60 if we’re talking clonesThe answers you are getting based on this being an open class. As per original post.
If this is for an adult clone class, the gearing will be too deep.
And contrary to how to make speed and momentum with a stock engine.
The OP is somewhat confusing.
I ran a 12/60 and on our rwub track not sure of the size, I only topped out at 56-5800 rpm but had way more in the motor, I'm gonna try a 13/62 and see if that help pick up the rpm, track can handle around 7500 to 8000 rpm...I built a 9 rand motor so I wanna make it sing. Predator 212I too thought this was an open class post. I’d be on a 12-60 if we’re talking clones