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Old Jul 12, 2004 | 02:14 PM
  #16  
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holy **** why does there need to be fighting??

would both "sides" agree that advanced cams (272i/264e) give better low-end/midrange at the cost of some idle, while the more common 264i/272e make for better high-end, also at the cost of some idle?
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Old Jul 12, 2004 | 02:20 PM
  #17  
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Originally Posted by ez76
holy **** why does there need to be fighting??

would both "sides" agree that advanced cams (272i/264e) give better low-end/midrange at the cost of some idle, while the more common 264i/272e make for better high-end, also at the cost of some idle?
You are absolutely right for the most part. Increasing the duration could potentially keep the power from falling off in the higher rpms (again, also depends on many other factors) but will inevitably hurt spool and off-idle characteristics.

Again, I do not see much point in replacing the stock cams with some ***** cams that get along just fine with the stock valvesprings. If you are replacing cams, it makes sense to me to use a faster ramp-rate cam with an asymetrical profile like the Tomei or Piper, make more power, have better idle and off-boost power.
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Old Jul 12, 2004 | 02:29 PM
  #18  
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Originally Posted by Fenris Ulf
Ok, on this side of the pond I will bring up more data to spew:
http://www.automotosports.com/cam_test.asp
Hmm, looks like more duration caused more overlap, thus slowing spool and resulting in 10 less wtq for the 264/264 vs the 272/272 comparison.
Notice they didn't test the 272i/264e combo.

In racing (ESPECIALLY drag racing), how often are you at 4000rpm? I don't give a shat about the extra 10wtq in that range. AMS said that the 272s on both sides was their top choice for power.

WTF are you talking about gearing being a torque multiplier?
I'm talking about the fact that the 272 exhaust cam is stronger from 5500rpm up on the dyno graphs, and in racing, that's where you want the power, as you land beyond the rpm range where dual 264s were superior.


What is wrong with extra duration on the exhaust side, if you were unable to read my first explanation, is that on a stock turbo setup the exhaust backpressure is greater than the boost pressure and thus flow is reversed during the overlap period. Since you don't know what that is either, reverse flow means exhaust gets pushed back into the combustion chamber which is what causes worse off boost characteristics, slower spool and less torque.
You're quite condescending and hateful, aren't you? Perhaps you'd be open to discuss this more civally instead of touting this "greater than you" complex? I think that someone going for all out power that is contemplating a turbo upgrade in the future would trade some midrange torque for more high end power potential. Did you choose ignore my bolded part in the last post?

So if it is such a silly idea to have an intake bias, why did Mitsubishi do it in the first place?
Because they want the kick in the midrange. The turbo is efficient there, and they can safely use more boost. Great for a street car, not as ideal for a racecar.

Oh, and actually its an LS6 that I built last summer in my spare time. Not bad for a motor that makes 527 rwhp on pump gas with the stock intake, throttle body, ignition system, fuel rail and lines, crank and block and still gets 27 mpg...
I like the LS1 and LS6 and know their Herculean potential. I was not rolling my eyes at your car, but because I (apparently) incorrectly guessed your motive for posting in this thread in the first place- Hence the Suwanee inference.

I'd contemplate a 272 exhaust cam, but will probably stick with 264s on both sides. I drive my car fairly often, and am not willing to compromise with the 272 intake cam's idle. We like our power delivery in different places. Relax.

Last edited by Noize; Jul 12, 2004 at 02:31 PM.
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Old Jul 12, 2004 | 02:33 PM
  #19  
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Noize there you go agian. The only person to beat me is and was Doug. If you watch the video you will see me sitting at the line like a dummy and Doug gets three car lengths. Surprise, I catch up and folks at the track thought I sprayed. I did not. My cams did it. Ask anyone that has seen me run. My cars run super strong, but 4th weakens because of my intercooler that blows. Doug's is 4in thick! It's a monster. Look at his 1/8th and mine and compare. He is at 90mph. Dude I hit 95mph. This also goes back to where is your 11sec time at and why are you bashing my car again. Stop starting arguments and smack talking. It is getting old. Like I said beat my time and then talk. If Doug gets on here, which he won't and gives me crap, than so be it. He won that day not me. I can take it like a man. Be advised that that was my only run that night and I did mess up. I usually do on my first run of the night. Sit back and watch because soon enough I will hit 11.5 and then what. Now that you ticked me off AGAIN and got me

I love the 272in and 264ex. We will be dynoing the different combos soon so please be patient. We will post the results on Boost Solutions forum. Matt thanks for having my back while I was being hit from behind by Noid. He's been starting a lot of arguments lately all over the place. I don't get it. Maybe he's lonely and needs attention.

Bro, if attention is what you are craving, lets schedule to meet at the track so we can settle who the daddy is. Until then Shhhhhhhhhhhhhh!

Stop hating on be and talking behind my back. If you keep it up I might cry. You're such a tough guy behind that big ole KEYBOARD.

Everyone else hugs and kisses

Matt
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Old Jul 12, 2004 | 02:37 PM
  #20  
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From: fort leonard wood, mo
What cams are you using Noize? It's not my combo. I run 11.9 you run12.29

You might want to switch tough guy
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Old Jul 12, 2004 | 02:52 PM
  #21  
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Hey Matt,

How is posting this on an open forum that you're registered to talking about you behind your back?

Why are you trying to compare your times to my times (which are neither what you posted nor updated)? At this point unlike yourself, I still have stock cams, stock clutch, stock ignition, stock injectors, stock intercooler, stock IC piping, and am running MAF instead of speed density.

Of course your car is a lot faster, and would destroy my Evo on the dragstrip! I admitted this freely in a very visable thread.

Look at the topic of the thread. I don't want 272i/264e cams and shared why they're not right for me. The poster was asking for opinions, and I gave mine. What's the problem with that, man? You're too defensive about your car. In reality, I think you have the potential to beat the stock turbo record. The car that has it had 264/264 and a trunk full of equipment. The only thing you need is some cooler weather, because the other car had that. Everything clear?

-Seth
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Old Jul 12, 2004 | 02:57 PM
  #22  
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Originally Posted by Noize
Notice they didn't test the 272i/264e combo.

In racing (ESPECIALLY drag racing), how often are you at 4000rpm? I don't give a shat about the extra 10wtq in that range. AMS said that the 272s on both sides was their top choice for power.



I'm talking about the fact that the 272 exhaust cam is stronger from 5500rpm up on the dyno graphs, and in racing, that's where you want the power, as you land beyond the rpm range where dual 264s were superior.




You're quite condescending and hateful, aren't you? Perhaps you'd be open to discuss this more civally instead of touting this "greater than you" complex? I think that someone going for all out power that is contemplating a turbo upgrade in the future would trade some midrange torque for more high end power potential. Did you choose ignore my bolded part in the last post?



Because they want the kick in the midrange. The turbo is efficient there, and they can safely use more boost. Great for a street car, not as ideal for a racecar.



I like the LS1 and LS6 and know their Herculean potential. I was not rolling my eyes at your car, but because I (apparently) incorrectly guessed your motive for posting in this thread in the first place- Hence the Suwanee inference.

I'd contemplate a 272 exhaust cam, but will probably stick with 264s on both sides. I drive my car fairly often, and am not willing to compromise with the 272 intake cam's idle. We like our power delivery in different places. Relax.
Oh, I had no idea we were talking about all out drag cars here. And actually in drag racing I will take the 10 wtq and faster spool than 2 extra hp up top ANY DAY since this will get you out of the hole quicker and down the track faster. Not to mention the other 99% of the time the car is not being floored and enjoys better off-boost drivability. But I only have a couple 9 second passes under my belt, what would I know about drag racing?

I am open to a civil discussion (note the spelling), and I did notice your bolded statement in your last post. But last time I checked, this thread was started by someone who has the stock turbo and wanted feedback on his combo, not criticisms against an intake bias combo made by someone who understands very little about the dynamics of a turbocharged four-stroke engine. My motive for posting in this thread was to inform members of this forum the reasoning behind a 272/264 combo and some of the physics involved since you instigated an unsubstantiated attack on an intake bias setup.
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Old Jul 12, 2004 | 03:05 PM
  #23  
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With a launch at 5000rpm, once the tires bite into that VHT in that quick instant it goes through first, how much benefit do you really think your 60' is seeing from that 10wtq? Answer: Nil. You like different power delivery than I do. Agree to disagree.

I'd hardly call my post an unsubstantiated attack when the starter of the thread asked why very few other people run that combo as well as if he should install it. That implies that they aren't in his car yet. Your gorilla ***** to the wall attacks notwithstanding, I think he deserves to hear both sides of the equation.
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Old Jul 12, 2004 | 03:09 PM
  #24  
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Originally Posted by Noize
With a launch at 5000rpm, once the tires bite into that VHT in that quick instant it goes through first, how much benefit do you really think your 60' is seeing from that 10wtq? Answer: Nil. You like different power delivery than I do. Agree to disagree.

I'd hardly call my post an unsubstantiated attack when the starter of the thread asked why very few other people run that combo as well as if he should install it. That implies that they aren't in his car yet. Your gorilla ***** to the wall attacks notwithstanding, I think he deserves to hear both sides of the equation.
Go dump your clutch at 5K rpms and tell me that the rpms do not drop when the tires bite....

And before you get into the upper rpms where the extra power is, the turbo has to spool first, and this takes longer with bigger cams. So regardless of what rpm you launch from, you will get off the line quicker with a combo that decreases time to full boost.
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Old Jul 12, 2004 | 03:13 PM
  #25  
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Originally Posted by Noize
I would think a lot of vendors would like to sell this package, due to the fact that there are a ton of 272 intake cams and 264 exhaust cams on shelves due to the popularity of the 264i/272e. I personally would not run 272i/264e. No matter what, I want a 264 intake cam. I'll probably get 264s on both sides, but if you're ready to put a 272 on the intake side where it will effect your idle more greatly, you might as well put a 272 on the exhaust side too.

Cliff's Notes: 272i/264e makes absolutely no sense to me.

Wait until the dyno sheets...

Also, we have been running this setup for a while now... It is nothing new. If you ACTUALLY go on www.lancerregister.com, all that will "absolutely make sense to you"///

George
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Old Jul 12, 2004 | 03:17 PM
  #26  
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Originally Posted by ez76
holy **** why does there need to be fighting??

would both "sides" agree that advanced cams (272i/264e) give better low-end/midrange at the cost of some idle, while the more common 264i/272e make for better high-end, also at the cost of some idle?
Exactly, thank you!!!

We were just sharing our experiences, Noize!

Not picking fights!

George
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Old Jul 12, 2004 | 03:40 PM
  #27  
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Dam Noize, what is up your *** you want to get on every board and start a war. I dont know why you want to get on here you dont have the ***** to put cams in. so what do you care anyway. I know I am being hard on you but you seen to post on every Bs board. just say good info and show the dyno sheet. I know that if Vishnu didnt do it then it must not be good.
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Old Jul 12, 2004 | 03:47 PM
  #28  
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Originally Posted by Fenris Ulf
Go dump your clutch at 5K rpms and tell me that the rpms do not drop when the tires bite....

And before you get into the upper rpms where the extra power is, the turbo has to spool first, and this takes longer with bigger cams. So regardless of what rpm you launch from, you will get off the line quicker with a combo that decreases time to full boost.
You can launch in boost, albeit less. The time in the 4000rpm range is low. You're getting really nitpicky. If you think you can cut off .005-.01 from your 60' doing that, go for it. In reality, launch variances will have more variation than 10wtq in the 4000-4700range. This discussion is wasting time for both of us at this point.
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Old Jul 12, 2004 | 04:06 PM
  #29  
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Originally Posted by Toddevo 8
Dam Noize, what is up your *** you want to get on every board and start a war. I dont know why you want to get on here you dont have the ***** to put cams in. so what do you care anyway. I know I am being hard on you but you seen to post on every Bs board. just say good info and show the dyno sheet. I know that if Vishnu didnt do it then it must not be good.
The complete ATL crew is almost accounted for, eh. Cams are going in my car mid-late August if all goes well, Todd. I'm still trying to decide between 264/264 or 264/272. Its the next logical step for power. If I can have idle like Ryan's car, I'll be happy.

BTW, I respect lots of other tuners: Mark at Turbotrix, Tym at Buschur, and Nathan at TXS to name a few.
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Old Jul 12, 2004 | 04:17 PM
  #30  
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This thread has got me so anxious to try the 272/264 setup, It's cool to hear everyone's point of view! I am still stock as of now! i'm getting the Buschur tb tues or wed and then i will throw in the cams. hopefully in the next 2 weeks.
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