FDRacing

I just saw a sig that said rotaries invented vtech? Can someone explain it to me, because i always just understood vtech to be a engine with variable valve timing. Since its a "honda" thing i never took time to get into it.



Or is it like how the heads and plugs are designed, like a hemi?

rfreeman27

They had a 5/6 port actuator, so when you reached a certain RPM the port opened, and you got a kick in power. But with the port closed you still get some low end driveability.



not exactly like vtech but same concept.

FDRacing

my 87 NA has that doesnt it?



I get what he means now, i remember reading up on the ports and how they need to be altered when upgrading the car.

mazdaspeed7

It does the exact same thign as Vtech, but the implementation is different due to the design differences of a rotary vs a piston engine.



Both alter the duration and area(or lift), but in a rotary, its accomplished by simply blocking off and opening ports, as opposed to the 3 lobes on the vtech cam.

FDRacing

so "vtech" is a spin off of our precious rotaries.



bastards.

Dramon_Killer

Everytime it ry to argue that one the honda kids always go back to, thats impossible becuase honda put vtec in the first production car in 91 in the nsx...



I said form of vtec, we obviously dont have valves or camshafts...



And after that they just keep argueing, but honda had it first.

FDRacing

vtech or no vtech, its a honda. My buddy thought his prelude was cool, i lifted the hood on the 7 to check some things out and he goes



"1.3L???? thats a ******* joke right???? Ive BEEN in THAT car, that came from a ONE POINT THREEEEE????"

mazdaspeed7

Man, thats the only thing hondas have to hold on to.....give them a little slack.

FDRacing

sure as hell arent holding on to the car......

mazdaspeed7

Ive had a guy tell me his 5.0 mustang was 3 times as fast as my car since his engine was 3 times bigger. He would have been for a rude awakening had he actually put his money where his mouth was...