southside Posted January 12, 2014 Report Posted January 12, 2014 Who is my best option for dune/play porting on a billet Vito's 404 monoblock setup. Looking for someone who has experience with porting these cylinders. (Yes I know a cub will make just as much unported, so save those posts) got a killer deal on this cylinder and am just looking to make some good power for my trail/dune bike. Quote
trickedcarbine Posted January 12, 2014 Report Posted January 12, 2014 Not a fan, but I hear Kevin herr at HJR has messed with them. Quote
southside Posted January 12, 2014 Author Report Posted January 12, 2014 Ok hjr was the only builder I had read based on my searches that has really messed with this cylinder too much. As far as setup the entire package will be done right and tuned well. I've been building banshees for many years now just haven't done anything more on the tame end like what I'm trying to do with this play bike. Quote
southside Posted January 12, 2014 Author Report Posted January 12, 2014 Do you guys think 75-80hp on pump gas is achievable with this setup with some good dune porting ? Motor will have, CPI inframes, v force reeds, 35mm keihin pwk air strykers with pods and +4 timing. Quote
trickedcarbine Posted January 12, 2014 Report Posted January 12, 2014 http://bansheehq.com/forums/index.php?showtopic=171964#entry1560057 Here's one for sale that Kevin did. It's claimed to meet the specs you were wondering about. Quote
southside Posted January 16, 2014 Author Report Posted January 16, 2014 Does anyone know if you can run a 4mm crank with this cylinder without a spacer? Quote
trickedcarbine Posted January 18, 2014 Report Posted January 18, 2014 Yes, gonna need domes set up for it And the porting will need to be formatted to whichever base gasket you choose. Thinner will help bottom end. Quote
trickedcarbine Posted January 20, 2014 Report Posted January 20, 2014 ^ I like where this guys head is Quote
TKJ421 Posted January 20, 2014 Report Posted January 20, 2014 I get Jim at passion racing engines to do my work, amazing quality and performance and the guy is a genius. Sent from my iPhone using Tapatalk Quote
WINDYCITYJOHN400 Posted January 21, 2014 Report Posted January 21, 2014 I like this guy^^^ Passion ftw He's having his top end done as we speak. (According to TKJ421) So Maybe when he finally gets his top end, he can speak to the quality levels. After all, he's got an unported 421 cub running Shearers right now and he says it's making over 100HP…... As for Jim being a Genius………Wile E. Coyote was a Super Genius. What's that tell you? Quote
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