VVTi
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slowvo wrote:
When did valvetronic start being used?I beleive on the V8 in the E65 745Li (the current 7 series body style).. so around 2002 or so?
I don't know which other BMW engines feature Valvetronic.
None of the M engines do - BMW has stated that thus far, Valvetronic isn't responsive enough for their M car engines - which all rev to 8000+ rpm now
(8000rpm for the M3 / Z4M, and 8300 for the M5/M6) -
wannabe wrote:
I never gave any incorrect information in this thread. Why do I need to run a fast time to say something that is obvious?What kind of fuel would you run on a forced induction 14:1 engine? What engine management?
Also, why would you run a high static CR instead of a slightly lower one but with more upside in additional boost? You might want the higher CR for a street motor.. but 14:1 boosted doesn't sound very streetable to me.
Audi runs 10.x:1 on their TFSI motors, and run a non-trivial amount of boost, all on pump gas, with a warranty. But to do this apparently requires a bunch of tricks that you don't normally see in the aftermarket - direct sequential injection being cheif amongst them. I've never heard of anyone converting a common-rail setup to a direct-injection setup. Something about drilling an extra hole in the combustion chamber seems to turn people away.
I'm not sure what standalone systems support sequential injection and non-waste spark ignition.. 034EFI probably does. I'm sure something like Motec does. Most people doing at-home or even at-shop builds aren't running Motec though...
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AEM lets you run sequential injection and non wasted-spark ignition.
That's what we use in almost everything. -
wannabe wrote:
When Did I say it JUST NEEDED TO BE BUILT!?!? I never did? I just said it NEEDED to be built. i dont know where you guys are getting this... once again like I said, I never gave any incorrect information in this thread. Why do I need to run a fast time to say something that is obvious?wannabe wrote:
I meant 14:1 compression, tired post, wasn'treading it right...wannabe wrote:
its not like you can't boost a high compression motor... it just needs to be built...Because you learn from hands on first hand experience not reading it on the internet. if you've never built anything or run the time how do you think you know, cuz you read it online? I see it every week..... And we get the PITA to fix it half the time too!
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slowvo wrote:
When did valvetronic start being used?
VVT started because the manufactures said goodbye to those hairdriers that are plumbed into the exhaust and wanted a better way to reduce emissions at startup.
Yes, as it evolved they are used more and more for performance purposes...I agree. Its just not as effective for adding power as the hondas (referring to stock cars here. Yes, i realize boost owns all)Its also funny when people talking about their VVT 'kicking in'
I think when people hit that crossover point, its easier to say **** kicked in, than Damn, my cams just changed over to a much more aggressive profile. -
I've never known the feeling of **** to be a "damn."
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^^stir stir stir^^
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Street racing is bad. Very dangerous
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wannabe wrote:
No I think he just wants other people to race his car because he is scared of it... Who was driving in this video?link removed belongs in protected forums
Damn, your really digging. Is there something your trying to prove or wtf does what you just posted have to do w/ anything? i can take you out in it too on the street tires w/o a seat belt and probably make you piss your pants!
Neither GSR's car nor Kevin's hatch will stay in its own lane under 120mph and personally i wont drive anything on the street @ those speeds on slicks.
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integra_gsr98 wrote:
Ever run a decent time? Tune a car? How about a high comp boosted car? Own one?Didn't think so.
Misinformation spreads when people who have zero knowledge on a subject pretend that they do.EDIT See http://www.honda-tech.com/ for examples.
Al I was doing, tufte, was bringing up the fact that while he might own a High compression boosted car, He doesn't race it on the streets, and when he's at the track he doesn't run decent times for the cars potential. I never claimed to know all, and he talks a lot of shit for someone who can't handle his car. Not saying I can do better, but I'm not the one running my mouth... -
wannabe wrote:
. Not saying I can do better, but I'm not the one running my mouth...Then you shouldn't be talking @ all then.....
The motor is 9.8:1, nothing crazy. When you build a 500whp fwd setup you come find me and we'll take it out on radials and see how you'll push it.
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wannabe wrote:
Al I was doing, tufte, was bringing up the fact that while he might own a High compression boosted car, He doesn't race it on the streets, and when he's at the track he doesn't run decent times for the cars potential. I never claimed to know all, and he talks a lot of shit for someone who can't handle his car. Not saying I can do better, but I'm not the one running my mouth...Define a decent time? The 10th pass out on a STREET tune this year it ran 10.8 @ 136. It's run low 11s more times than you've ever seen the 15s.
Define my potential of my car? What do you know about it? Single stage boost no traction bars, 3 year old tires and 10.8 @ 136 on the 10th pass of the year, fuck thats horrible. Oh then it didn't do it again, but weird, that failing fuel pump completely fucked the tune over on the last weekend. I must really suck.
I've raced plenty of shit on the street, don't care to do it anymore period. Why risk my drivers license, my insurance, MY JOB, or my life. If you knew the back story on that night against the bike's you'd probably be able to talk shit, but I guess you really have no clue.
Go back to running back and forth and stirring shit up between shops because that's about all you are good at.
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I have road in a couple 10/11sec cars as a passenger on the street and driven one or two at some point in time you realize the difference between a 13 sec car, or 15 in your case, and a 10/11 sec cars scare factor for one thing, it inst quite the clockwork you make it out to be...
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wannabe wrote:
and he talks a lot of shit for someone who can't handle his car.granny shifting, not double clutching like he should?:rolleyes:
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