Quote:
Originally Posted by WHITE
Honestly revving up to 9000+ rpm on a 1.5:1 ratio concerns me(hence why I'm watching this thread to see the outcome). thats right there at the bottom end of the scale for "ideal" ratio on just a regular engine(non high revving). It just sucks there's absolutely no way to get a long rod into these engines without signi***ently reducing the stroke.
What's your top rings distance from the top of the piston? Looks close if not over .250" wich is nice. When you were dreaming this up did you ever think of using a gapless top ring and removing the second ring to let you move your oil ring up over the pin? I've been considering this for my build just to try and get a little longer rod by allowing the piston to be shorter then 1"( danger zone lol)
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Stock RS ratio is 1.5:1 mine will be 1.51:1 with the stroke.
Plenty of people have run 9000RPM biggest failure is in NA form its pointless, Turbo they can make the power up there,
Cams should at least support 8500
The monster K series drag honda's making 400 WHP NA are running 2.6ltr stroker kits at 1.4:1 ratios revving high.
Reason not to go to 9000 RPM is stock internals can not take the forces, we wont have stock internals or anywhere near the limitation.
As for the oil ring it has a support ring to go over the missing material. The wristpin in 1/2 the width of the piston so it will not interfere with the oil ring.
I thought about piston buttons but it added a bunch to the cost of the piston.
This is the oil ring support setup
