Head Porting...What is the True Value??

If the heads will flow more than a CV40 can provide,then go to the next size up...

hell a well modified cv 40 will feed a 100 hp motor with no problem. they got billet bowl spacers now to keep them full. but you need a good pepcock like a pingel high flow!!!

I have a gravity fed petcock on it now.

I'd highly recommend the Pingle if you don't have a hi-flo on it now...Pingle is gravity fed too...I would at least go for the Woods bowl spacer kit if you don't want to spring for the whole carb


High Capacity Float Bowl kits for Harley CV carburetors - by Wood Performance

I think that I am first going to get my bike on the dyno to get a rough idea what it is that I am making for power. Then I will go from there. I called the dealer and they told me that they would charge only $50 for three pulls. When I am able to get that done, which should be about in one week, then I will post the dyno sheets.....

I thought that this was a really good paper written about engine dynamics, although I do think that it is incomplete. I thought also that this paper was real relevant to this discussion. It was written by some engineers from a University.. Enjoy!!

http://rescomp.stanford.edu/~efroeh/papers/RDH_Engine_Performance.pdf

cylinder pressure and chamber volume are super important to have a good burn johnny . and with the fuels we have today even more so with ethanol . its great if you run a forsed indution motor or nitros oxide to help it burn . but ya got to run it rich 9.65 or 10.2 to get a good burn . very rich from stioch being 14.7.1. . less cylinder pressure your able to run more timing as well . to ovre come the low pressure in the cylinder as well . and cause the expansion of fuel early in the cylider to make torque . !!! good read

If I see low afrs at higher rpm, I will know that that is one of my problems. As you said, but I will say in a different way, being slightly rich is a good thing, especially at higher compression. Another thing that I got from this article is that timing is CRITICAL to making power. This article just reenforces that by my changing my ignition ramp, that I am technically supposed to have more power. However, since I have added the V-Ductor, and have increased velocity of the incoming air, I am convinced now that I leaned out my afr. today will be a step closer to see if I am right. I am expecting to see big differences in afr numbers from my set parameters for today's dyno runs.

What do ya think BP, Lucifer and HRK?

yes if you were lean to start with ? maybe you were rich to start with ? you will soon find out ! and dont forget that the duration of the valve event have alot to do with it and your cams have a long exhaust duration event you might be a little low on cylinder pressure thus allowing you to run more timing early , and also allowing you to run a little richer at low rpm . but runs lean up top when it starts to make power and you can run a bigger main to fix that we will see . ttyl brother have an awesome day !!!!!

dewy was a good head man dont know much about the guy that took over his shop . dewey had a stroke a while back and got out of the bike industry . sucks he knew lots about makin power.

hey, aren't you supposed to be working????:roflmao::roflmao::gah:

ya !!! so what

Just checking.

Well, I have WhipLash at the shop and ready for the dyno. I was under the impression that my indy sent his stuff out for when headwork needed to be done. Well, I was wrong. He does his own stuff and he has a flow bench.. I am really excited to see what these numbers show and tell me..

$450 for the cam that I need is a lot of dough.... I hope that it is worth it..:gah: I am assuming that I am going to have to check real close for clearance compatibility, heavier springs and so on.. this is turning out to be an expensive deal, but oh well, how can one go wrong with "more power"?

you mean cams !!!!! got more than one ya know:roflmao: best valve train set up is a sporty . but boy are they expensive !!!!

:gah::gah: You got me......

screw it just turbo it with an intercooler call r-b performance and get a kit .