Eric Anderson's Supercharged SSM Miata
#206
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Join Date: Jan 2011
Location: Chattanooga, Tn
Posts: 1,234
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Yea. Sticking with 275's. Until someone builds a 315 30 15
It was just a one event thing. There was nobody in SSM so we ran XP to have someone to race
Good eye 15x11 Bogarts
It was just a one event thing. There was nobody in SSM so we ran XP to have someone to race
Good eye 15x11 Bogarts
#209
You seem to post "hate away" in just about every other post. And no one is hating. And I don't think anyone has ever hated. You think maybe its time to stop being so defensive and dramatic?
Anywho, recent upgrades look hardcore. I'm curious: are you using na, nb, or custom trigger setup with those cams?
Anywho, recent upgrades look hardcore. I'm curious: are you using na, nb, or custom trigger setup with those cams?
#215
Looking great! My old SM build (for a VW, but very similar to this) used some pretty crazy cams with more lift and more overlap than anyone (at least in the VW world) thought would work on a SC motor. Enough overlap to hear it in the exhaust. Lots of people seemed to think that you couldn't go too aggressive with the cam on an SC motor. But it just kept making more power, and didn't seem to hurt torque at all.
What wheels did you have previously? If they're 15x10, have you (or do you plan to) test them back-to-back? We're on 15x10s just because that's what everyone else seems to run. That's what our car had when we got it, and we're still pretty new to the Miata, so we've got plenty of other stuff to play with. But based on what I've found with A6s in other classes, I suspect the 275s might like a 10.5-11...
What wheels did you have previously? If they're 15x10, have you (or do you plan to) test them back-to-back? We're on 15x10s just because that's what everyone else seems to run. That's what our car had when we got it, and we're still pretty new to the Miata, so we've got plenty of other stuff to play with. But based on what I've found with A6s in other classes, I suspect the 275s might like a 10.5-11...
#216
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Join Date: Jan 2011
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I tend not to listen to "they"(i.e. "lots of people") when it comes to my setup. "They" say a lot of things that have turned out to not be true I have found that with the twin screw it has unique needs especially with cam and valve timing.
These cams were designed by taking flow bench data from the head, the map of the blower, data logs from 10 National events to get a real RPM band, static and dynamic compression ratios and about 9 other data points. The lift increase is dramatic over a stock cam. So much so that there is no way these profiles would work on a motor that needed to last more than @15 hours between rebuilds. They also required some custom (read very expensive) valve springs to control them.
I haven't tested the 10's and 11's back to back. I would imagine that any data would be simply anecdotal. I imagine that the 11's will require tweaks to shock settings as well as possible spring changes. Even if they don't make the tires work any better, they are lighter than the 15x10 949 6ULs and they look better
These cams were designed by taking flow bench data from the head, the map of the blower, data logs from 10 National events to get a real RPM band, static and dynamic compression ratios and about 9 other data points. The lift increase is dramatic over a stock cam. So much so that there is no way these profiles would work on a motor that needed to last more than @15 hours between rebuilds. They also required some custom (read very expensive) valve springs to control them.
I haven't tested the 10's and 11's back to back. I would imagine that any data would be simply anecdotal. I imagine that the 11's will require tweaks to shock settings as well as possible spring changes. Even if they don't make the tires work any better, they are lighter than the 15x10 949 6ULs and they look better