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Yeah, but your tranny isn't going to like you after a while.
 

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Discussion Starter · #5 ·
so there is no problem to try it out.
How long will the trany last? I would use this only on the track?
 
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:rolleyes: Why would you want to air shift on the track? The only way I know how to shift without engaging the clutch takes longer than when using the clutch. It is just sometimes a little more convienient to not have to use the clutch (eg; like in rush hour traffic). But like I said earlier, it doesn't work very well--at least not on my car... Hope this helps... ;)
 

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Discussion Starter · #9 ·
there should be no problem to shift it at WOT with ignition disturbed when I cluch it.

I will try to shift at WOT and the ignition key turned back.
 

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Discussion Starter · #13 ·
I think that I could shift faster without cluchig it. Now I loose some time before the cluch grabs again( I relese it as fast as possible ). But my real wish is to shift at WOT. so the engine will not loose any revs and the power will come faster again. (the manyfold and the cylinders will be filled)
 

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so shift w/ the cluch @ WOT.. i think its called "powershifting"
 

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unless i am wrong(it's been known to happen)don't overhead cam engines have "tappets" instead of "rockers".
A tappet is a device that sits between the cam and the valve actuator (rocker arm). It's a pretty rare 4-stroke that doesn't use rocker arms and poppet valves.

In cam-in-block engines (overhead valve), these are called lifters and are usually the hydraulic devices that take up clearance. Sometimes these are solid and you are then required to manually adjust rocker/valve clearances.

Overhead cam engines sometimes use tappets. Modern Nissans don't, though they do have hydraulic lash adjusters to maintain rocker/valve clearance. Non-HLA would require a screw adjuster or shim under/over bucket to set clearance like many motorcycles.
 

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Is that the same as a pushrod engine, where the cam is in the block and the lobes push on long rods that in turn push on the valve lifters? I just wanted to be clear on that.

Staying on topic, I used to be an alignment tech at a shop where I worked, and we were supposed to test drive cars to give a diagnosis before we dropped the heads on it and aligned it. I drove a B14 SE-R once and I didn't get to drive cool cars often so I was playing with it and found I could upshift without the disengaging clutch or releasing the acclerator. I could just slam it into gear really fast without grinding it. I guess that's what this whole thread was about. However I could not downshift without pressing the clutch, only upshift. I suppose that's normal.
 
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