What did it ?

raydhd · 04-16-2024, 05:39 PM

I have been amazed by the super power of my Omega build these last few days. I looked over what changes I made different from the VC 460 long rod. For sure the smaller diameter Raceseng flywheel was a big change but some mini bikers have done A -B testing between the flywheels and didn't see a big advantage in acceleration. I did also go to the NRracing 6500 rpm valve kit. Those valves compared to the stock VC unit look like from stock small block Ford units the the very slick GT 40 units. Along with this in the cylinder head I did use Paulkarts idea he found early on with his new flow bench that in unshrouding the valves big flow #'s were gained by coming out straight from the valve 1/8 of an inch. From Jody Powell at ARCracing his work showed that really streamlining the valve guide pyramid really upped flow figures. Lastly idid very accurately correct end float on all 3 shafts. That has made a tremendous difference in the amount of particles on my magnetic dip stick. So is it a lucky combination of the changes OR one or the other did it ?

raydhd · Yesterday, 09:15 PM

I just realized today that during the winter shut down I did strip the EXP carb down and super cleaned it. I hadn't ever did anything to it before. I pretty much ran it just as Shepard shipped it to me. The cold start has changed that the best way now is no throttle and hit the key. Maybe the was some trash keeping the carb from full power ?

04-16-2024, 05:39 PM	#1
raydhd VC 460 CLONE GONE WILD Join Date: Oct 2014 Location: Ray BY The Bay NJ Posts: 10,642	What did it ? I have been amazed by the super power of my Omega build these last few days. I looked over what changes I made different from the VC 460 long rod. For sure the smaller diameter Raceseng flywheel was a big change but some mini bikers have done A -B testing between the flywheels and didn't see a big advantage in acceleration. I did also go to the NRracing 6500 rpm valve kit. Those valves compared to the stock VC unit look like from stock small block Ford units the the very slick GT 40 units. Along with this in the cylinder head I did use Paulkarts idea he found early on with his new flow bench that in unshrouding the valves big flow #'s were gained by coming out straight from the valve 1/8 of an inch. From Jody Powell at ARCracing his work showed that really streamlining the valve guide pyramid really upped flow figures. Lastly idid very accurately correct end float on all 3 shafts. That has made a tremendous difference in the amount of particles on my magnetic dip stick. So is it a lucky combination of the changes OR one or the other did it ?

Yesterday, 09:15 PM	#2
raydhd VC 460 CLONE GONE WILD Join Date: Oct 2014 Location: Ray BY The Bay NJ Posts: 10,642	Re: What did it ? I just realized today that during the winter shut down I did strip the EXP carb down and super cleaned it. I hadn't ever did anything to it before. I pretty much ran it just as Shepard shipped it to me. The cold start has changed that the best way now is no throttle and hit the key. Maybe the was some trash keeping the carb from full power ?

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