Anybody running 272's or 280's on both cams , or even for that fact 272&280's ? I just got done talking to one of the sales reps from one of our vendors and he explained that if you ran 272's acrossed or 280's that you would need a valve train job ( ie., stiffer springs , better lifters and the sort ) is this true ? What are you big guys runing ?

 

do a search...there's many people running 280s, and about a hundred times as many running 272s. No need for valvetrain upgrade for those cams as long as you're not revving past 7800.

 

Aux, come on, man. You already know the deal with searching; you've been told to search at least 1000 times. What you were told from the sales rep was bogus unless it was for a special brand like Revolver. You would have known this if you read up on the hundreds of people who have 272 and the few who have 280s. They don't require any change to the valve train unless you get special cams with higher lift like I mentioned..

 

My bad you guys i didn't add in the part where it wasn't in the search ( tell you the truth War i always search cause i know if i don't like effing magic you will find my post and chew my a$$). I know that timing has alot to do with overlap when talking about cam gears. What i was wondering though is; i see all the time that peoplehave Tachs that run up to 10KRPMs . Will Changing your cams help you increase your redline potential ? Just here lately (why i was wondering ) is the DSSC gauge cluster for sale has the Tach showing as far as 11K RPM HOLY SH*T ! So what is it that makes the redline level increase in the engine ?

 

Unless you build some custom one off race motor you won't be reacing 11k on a 4g63. 9-10k is possible with the right valve spring/retainer combo and the right connecting rods/bolts. You might need a different crank too.

Althought I'm getting confused as to why you're asking totally unrelated questions.

 

flash your ECU if you want to raise your limiter....just make sure your valvetrain is able to support it....

 

I was trying to understand how some cars get there RPM's so high ! Especially when you have some turbo kits that don't reach full potential boost until higher RPMs. So would the problem be resolved if you could raise the limit on your redline and just give the Turbo a bigger ban to work in so you could stay in top boost longer and achieve high speeds.

 

What the hell are you talking about. You make zero sense.

 

Aux, what the hell?

Are you talking about those retarded Monster tachs that every riceboy this side of the International Date Line puts in their stock Civic to go with the matching mini-fire extinguisher???? Just because someone has a tach that goes to 10k or 11k, it doesn't mean the car can rev that high.

You don't need anything other than your stock tach. With cams, your redline never changes (that's always 7000rpm), but your effective powerband changes. With 272s/280s, you can make power much higher than with the stock cams, but the stock turbo isn't efficient at these higher rpms. On the stock head, some people have gone crazy and run as high 8500rpm (e.g. Evodave), but even he is immediately crazy and wouldn't necessarily recommend it to everyone. He also has a huge turbo that can make use of thse high rpms. All you would need is a flash to raise the rev limiter to 7800 or 8000 and a set of cams that can make use of this additional rpm. Even so, you likely would still want to shift at 7500 when racing in order to get optimal performance...

 

idk my personal opinion is that if you do upgrade your cams to whatever they might be you should upgrade the valves, valvesprings and retainers, just so that everything stays in tight order and you doont get any slight leaks and if for any reason you pass your redline you dont have bigger problems. Id upgrade them, not to mention your call will feel more solid

 

and you obviously don't know a thing about how an engine works.

 

Dude i am totally behind the power curve but i am no f-ing ricer, you take that back ! What i was talking about was Defi SUPER SPORTS CLUSTER (DSSC, see search). The Tach on one of them goes up to 11K, my question is how do people enable their cars to make RPM's that high without damaging their engines? I am an enthusiast not a ricer, just a little behind the power curve. To tell you the truth though i am getting 3 60mm DEFI BF amber Imperial gauges with a radio relocation kit so i can install them on the old radion panel portion.

 

Man, I just told you that just because someone buys a tach that shows 80,000 rpm, it doesn't mean they can actually go that high!!! Good Lord! I thought we already talked about how spending $540 on gauges is not the brightest decision in the world.

People DON'T rev their engines to 11k just because they have the Defi DSSC. It's completely unnecessary...

 

^^^^^+1

 

NO, dude what i am asking is " how can someone get their engine to rev that high and not damage it" ?