Banshee304 Posted December 17, 2013 Report Share Posted December 17, 2013 I have a 397 ported stock cyclender 4mill motor, stock carbs bored n ported, t5s. And plus 7 timing at the moment. At first when the motor was done and ready to run I had nothing but issues due to lean jetting on my part but after a few weeks of jetting I got the bike running crisp. Not as fast as I wanted but she's rips. My builder has been in the banshee game for over 15 years he's old school and I don't doubt him in the slightest bit. Long story short I have people telling me that plus 7 timing is to much advance for pump gas bike. Just wanted to see what others thought and have experienced. Just picked up 34mm tmx flat side carbs and a complete Hinson clutch set up, vitos ball bearing lock up and in a week or two I'm ordering shearer sb in frames hoping to give me that extra power I'm looking for. Quote Link to comment Share on other sites More sharing options...
joshb Posted December 17, 2013 Report Share Posted December 17, 2013 What kind of fuel are or were you running? Quote Link to comment Share on other sites More sharing options...
joshb Posted December 17, 2013 Report Share Posted December 17, 2013 I see it now. Yes it seems a bit high from what I've seen Quote Link to comment Share on other sites More sharing options...
joshb Posted December 17, 2013 Report Share Posted December 17, 2013 Also are you trail riding, dragging,duning? Quote Link to comment Share on other sites More sharing options...
Banshee304 Posted December 17, 2013 Author Report Share Posted December 17, 2013 Sonoco 93. I ride New York Between sea level n 1,200 ft above Quote Link to comment Share on other sites More sharing options...
Banshee304 Posted December 17, 2013 Author Report Share Posted December 17, 2013 Also are you trail riding, dragging,duning? It's more or less a all around bike. I mostly trail ride n drag race on the feilds on my uncles property.. Been riding in glamis also 1 Quote Link to comment Share on other sites More sharing options...
WINDYCITYJOHN400 Posted December 17, 2013 Report Share Posted December 17, 2013 +7 on 93 is steep. The real question is Why are you choosing to set your timing at +7? Quote Link to comment Share on other sites More sharing options...
Banshee304 Posted December 17, 2013 Author Report Share Posted December 17, 2013 +7 on 93 is steep. The real question is Why are you choosing to set your timing at +7? I didn't choose 7. The guy who build it set it at that. Quote Link to comment Share on other sites More sharing options...
Young Guns Racing Posted December 17, 2013 Report Share Posted December 17, 2013 I run +7 on my 4 mil stock cylinder on 93 pump fuel. No detonation issues yet. But i have seen and hear horror stories. I am switching to race fuel for my newer setup (just changing porting a bit and going override tranny). +4 is a safe margin, if you have ANY doubts, retard it to +4 for peace of mind. Quote Link to comment Share on other sites More sharing options...
possum Posted December 17, 2013 Report Share Posted December 17, 2013 If a "builder" set it up. It must be right. Quote Link to comment Share on other sites More sharing options...
Banshee304 Posted December 17, 2013 Author Report Share Posted December 17, 2013 ......................... Nope no issues like that Quote Link to comment Share on other sites More sharing options...
Deadbeat Posted December 17, 2013 Report Share Posted December 17, 2013 so whos the builder Quote Link to comment Share on other sites More sharing options...
Banshee304 Posted December 17, 2013 Author Report Share Posted December 17, 2013 so whos the builder Erik from speed freeks racing Quote Link to comment Share on other sites More sharing options...
Banshee304 Posted December 17, 2013 Author Report Share Posted December 17, 2013 then run it, if no issues, fuck changing it. That's what I been doin last 4 months just was looking for insite on that much timing and personal experience from others Quote Link to comment Share on other sites More sharing options...
Pasi S. Posted December 17, 2013 Report Share Posted December 17, 2013 I'm not going to say that +7 is safe, but it's ok if you don't have issues. I went up to 8.5 with my set up, using T5's and 20cc domes, sea level, 93 pump gas. Then went back to 7.5 without any reason. I made some azzdyno testing and my motor felt better with 7.5 than 5. So if you dont have issues, keep it up, or go back 0.5 or 1. IMO, your lucky to have that kind of motor. Now you can find a happy medium between a good lower end torque and topend pull. Quote Link to comment Share on other sites More sharing options...
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