Originally posted by ferrealb16
really, i have a lot to learn? the first time i p&p'ed my head, i was runnin with si's/teg's with major bolt on mods. then i went and bought ctr cams and some adj. cam gears and was beatin prelude sh's with cai, header, and exhaust. ive learned what i need to learn. i was taught from one of the best, his name is ralph shumacher.
I already beat prelude SH's, and... hmm... I haven't even touched the head yet. No cam, only portmached the header and intake manifold to the head. A good engine builder will help you learn, but that's no reason to start thinking you know all the tricks until you start building your own and making your own name. To date I've built everything from 289's, 302's, 350's, 454's and 460 v-8's down to 30cc weedeaters, which includes scratch building exhaust manifolds. It appears I haven't been able to build my ego quite as much as you, however.
thought the valve guide sat above the valve seats. in fact, i thought the valve guides sat higher than the port does. but am i wrong, probably not. at the time i first wrote that, i had just gotten my head back from the machine shop. and the guy who cut my valve seats did a raduis valve job on his yamaha r1...much smaller valves, much smaller ports, much smaller seats.
They do sit above the port, but they still get moved around by the rockers. The larger the valve, the larger the degredation rate once it starts.
didnt i say you dont want to polish it too much because it will effect atomization. once again i was taught by one of the best.
Knowing and knowing why are two different things.
well personally, jun valves are crap, skunk2 is bunk, mugen is a complete joke. its not called over kill, its called doing it right the first time, the only time. complete ferrea valve train minus roller rockers/cam for around 1300. when buying internal engine components, you get what you pay for.
Everyone's entitled to their opinions, however, there isn't any reason for joe-schmoe to drop 1300 if all he's doing is a mild build-up. That's all I'm saying. If you're going for an all-out cost-no-object build, then by all means.
oh yeah, the guy who is helping me build my engine can bench grind sohc cam that gained him 27 hp.
I keep seeing this "the guy who is helping me" pop up. Normally I wouldn't cut anyone down for being helped, but with the kind of stuff you're trying to push, it leads me to believe that you don't know the entire reasons behind certain things. Most of us in this forum are either taught and experimented under supervision [like me], or absolutely refuse to have anyone but them touch thier car [most everyone else], and come here for the "what if"s, "why is it"s, and "how does X work" questions. This is NOT the place to try and win an ego contest or to say "my checkbook is deeper".