Quote:
Originally Posted by franque
Yeah, no worries, happy to advance the knowledge base. Do you think WGK does springs for them?
|
Not that I could see on their website.
Speaking of, I sent an e-mail to Douglas Carvalho at WGK to ask him about this particular cam profile and the type of performance it is geared for. My suspicions about the very slight shift in peak power were confirmed. This cam, while it does have a lot more overlap and duration than a stock CG, is more on the mild side due to the lack of increased lift. In automotive terms this would be a "torquer" cam. For any real higher RPM power, a cam with increased lift would actually perform better. Essentially, on the 125 they tested this cam on the peak power gains were a bit less than their 270 City cam seen here
https://wgkindustria.com.br/produtos...-media-cidade/ but it had more power gained below the curve, and a little more at the top end. In short, less peak power gained, but more power gained across more of the RPM range.
I am by no means disappointed at all, it just changes my plans a little bit. In many ways that makes it a better all around performer, and as I said in my initial impressions, it really feels like it picked up power in the mid and top end with little to no loss down low really, and the throttle response and the engines willingness to rev up is nothing short of awesome. So instead of the added heat, wear, and stress of higher RPM I will just have to take advantage of the added power a different way. Plus, I should be ok in terms of valve float lol.
I will wait to see how it does before making any changes, but with as strong as it pulls now I think I could get away with dropping a couple more teeth on my rear sprocket to the equivalent of my old favorite the 17/43, but still have very strong acceleration. That would definitely put me right where I would like to be in terms of highway capability. Especially if that adjustable CDI I just got in the mail allows me to advance the lower RPM ignition timing to bump up the lower part of the power curve and toss in a bit more torque as well.
He did state that if top end power was the real goal, then their "Rodovia" or "Velocross" 289 degree cams would be the way to go. The drawback is that more potential work will likely be involved, valve seat recessing, deeper fly cutting on the piston, and valve springs. This is one of those mentioned cams, and you can see their dyno chart of stock and with that cam.
https://wgkindustria.com.br/produtos...-alta-rodovia/