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This is going to sound like a dumb question coming from someone who is going to school for automotive and drives a honda, but, How does Vtec work? I know it stands for verable timing electic control (spelling is off), but how does it do it? I ask because i like to know how things work before i put them on my car.

The next questions is for tom i guess because it was his wright up.

What advantige do you get by switching to an OBD1 ECU? You say in your wright up that the Y8 distributor is optional. If so, besides being easier to hook up i guess, is there any other reason for using one?

Thats all the question i can think of right now. Im sure i'll have more when i get closer to getting to this project. Thanks guys.
 

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it works by using oil pressure to lock the lma to the other rocker,. each camshaft has a vtec lobe it rides on when the lma is locked.....im sure somoen can give a better explanation.

the obd1 ecu gives you better tunability. use the dis for the head you get, y8 if y8 and z6 if z6, so that the dis bolts up.

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there are three lobes on a vtec camshaft 2 outers 1 middle. The 2 outers are for lower rpm driving (less agressive lobe) and the middle one which is vtec is more agressive. wow okay i just got retarded and now cant remember. Well anyhow a rod-bolt thing i guess gets pushed through and now the middle lobe pushes the rockers. dangit man

there are better fuel maps on the obd1 ecu.
 

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Dodo said:
This is going to sound like a dumb question coming from someone who is going to school for automotive and drives a honda, but, How does Vtec work? I know it stands for verable timing electic control (spelling is off), but how does it do it? I ask because i like to know how things work before i put them on my car.
VTEC Explained from a FAQ on Honda Tech.

The next questions is for tom i guess because it was his wright up.

What advantige do you get by switching to an OBD1 ECU? You say in your wright up that the Y8 distributor is optional. If so, besides being easier to hook up i guess, is there any other reason for using one?

Thats all the question i can think of right now. Im sure i'll have more when i get closer to getting to this project. Thanks guys.
Like Matt said, the options for tuning OBD1 are much better, it's pretty much the standard. Also, if you're just building a simple mini-me, you can run it just about like stock on a P28, so it's good to go before you tune it. Using a P28/P72 is also the "right" way to run the mini-me, I don't consider the RPM switch or any other method correct or smart ways of activating VTEC.

I did say the Y8 distributor is optional, but you aren't going to be running anything OBD1 without it on the Y8 head. The A6 one bolts up to the Y8 head if you run OBD0, but not to the Z6 head. Just get the one for the head. If you're going with a Y8, rexman is selling one with plug wires right now. Are you searching for a head still? If you need help with the wiring, I am around. I just made another OBD0-1 conversion harness a little while ago for a buyer who flaked on me, and I could do the dizzy harness for you as well.
Gather ALL the parts first, then get to swapping. I'll be around if you need help with it.
 
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