dastinker8

WOW man do i feel stupid. I Finally found a picture of it.. now it all makes sense.. LOL on some pictures on the net it says that it actually slides the cam!! I was thinking on how that worked Becaues ive only rebuilt motorcycle heads... and i was thinking that theres no way you can slide the cam, and the size of spring it would take to be able to push the cam back. I see what you mean about the Pin. So if i just want vtec engaged all the time.. Open up the head.. pull the springs out insert a new pin that is longer and keeps the Vtec lobe engaged. I mean i thought honda was good.. but sliding a cam didnt seem like it made sense, and being able to do it with like only 60psi of pressure.. HAHA WOOOOOO. Anyway, I think i might rip into my head retune my ecu and see how it does na.. before i boost this one.... and see if i notice any gains or losses. Thanks Joseph for the info... Also if you could goto the Hybrid tech an post on my timing issue it would also be greatly appriciated.
Thanks
Brian

0b00st0

Dr. Boost, Ya there are certain conditions that need to be met for the engine to engage the high cam, like almost any CEL (I said almost), oil pressure at the solenoid, speed, coolant temp, rpm, and load. You can modify the code to not use these checks though.

dastinker8,

I already told you how the high cam is engaged with oil pressure, JD also told you, stop being an ignorant dumbass. Any helms or honda manual will explain how the vtec system works.

You need to listen as well. I explained to you why the high cam will not make as much power as the low cam at low rpms, JD explained many other things that you should read and remember, JD is probably the smartest mo fo you will ever have the chance of listening to. So pay attention.

When JD said engines behave dynamically, he couldn't be more right. Engines power usually bahaves as a "curve" because we can't control all the variables that go into making the most power at every rpm, load, and whether condition. Everything would need to be variable. So engines end up having a torque "peak" where everything is working right to get the most air into the combustion chamber. VTEC allows you to have two cams, and two torque peaks (not entirely true since every part of the engine is used to optimize the high cam) and with two torque peaks allows you to have a broader usable rpm range. Get it yet?

Tom-Guy

- ECU also checks for VSS>15mph, and for sufficient ECT.

That's the reason I love you, Justin.

Maybe you can imagine how dirty I feel when I have to work on a VTEC-equipped slowmobile *shudder*

0b00st0

Damn we all posted at the same time.

dastinker8, actually Ferrari uses a sliding cam. The face of the cam is sloped. As the engine speed rises the cam moves over and thus a higher lift is attained. It is like an infinitely variable VTEC system.

dastinker8

yes you said high cam is engaged with vtec.. you didnt say whether the cam moves or not. All the pictures in the pdf are shitty and i couldnt see how it actually works.

I am in the quest for more power by tweeking everything i can.. if i dont know how it works thats why im posting up to figure it out. I want to increase the integral of my tq curve.. and try and sqeeze out every little bit out for as cheap as posssible.
Thanks for the info
Brian

prelude9384

If you're looking for power up till 8k, I don't think a t3 super 60 will continue to keep on producing power at the high of rev. Go with a t3/t4 if you're looking to make power that high. I hope you're planning to spend money on your head to if you're going to rev to 8k alot, 7k is enough for a stock head on a h22.

dastinker8

i rev my h22 head to 8k daily... and i have yet to get valve floating... and it pulls all the way there too.

idiot-stick

h22a1 with 10psi - track car. good luck. I wouldnt put $ on it lasting too long. At least its not an A4 tho.

dastinker8

why is that.. whats your beef with the h22 and boost?

idiot-stick

I havent heard of many stock-bottom-end H22's lasting very long boosted (Especially the the open-deck A4's)

I don't have any "beef" with boosted H22's. I boosted a friend of mine's A1 and its been running for almost 2 years although its not driven very often.