F22Ax cam..

[91cblx]

So I have an extra F22A cam and do not know which it is, like which model engine it is from, I know it is from a F22A but do not know which, my old Auto Tech teacher gave it to me as a core when i was gona get a cam regrind so I had one to drive my car still. Any way to tell which cam it is?

[mj213]

The a1 and a4 cams are exactly the same - the only difference is the exhaust manifolds (fairly certain about this). There should be stamps on the end of the cam, but if there isn't, most likely you'll have to get dial calipers and measure the diameter of the lobes and compare them. If I find measurements I'll post them for you.

[91cblx]

I am hoping it is a A6 cam to just swap out lol, will check for the stamps on cam. Okay sounds good

[DJ metadelic]

The A6 is dual runner, as is the A4. But the A1 and A4 are the same for intake. Different for exhaust. The A6 cam has an extra .005" lift, over the A4 and A1 I believe, and there is a small difference in duration.

[jazzyAccord]

cam regrind what is that? will it give more power?

[deevergote]

The A6 is dual runner, as is the A4. But the A1 and A4 are the same for intake. Different for exhaust. The A6 cam has an extra .005" lift, over the A4 and A1 I believe, and there is a small difference in duration.

A4 is not a dual runner. That would be the IAB system, which is only on the A6.

cam regrind what is that? will it give more power?

A cam regrind is basically changing the geometry of the cam, which will give more power, yes. It will also often adversely affect your idle and fuel economy (though not much, if you don't go crazy)

[91cblx]

So I have taken a look at the cam and there is a stamp on the end that says 3A and there are 16 lobes total, does this mean it is dual lobe?

[Father Time]

16 lobes. 1 for each valve.

We have a SOHC 16 valve motor. 4 valves per cylinder. (2 intake 2 exhaust).

[91cblx]

To state my question better, how can you tell whether the cam is dual lobe (A6) cam?

[deevergote]

The A6 cam is not a dual lobe cam. You're thinking of VTEC, and the F22A does not have that. You have 8 intake valves, and 8 exhaust valves... 16 valves total, and one lobe on the camshaft for each valve.

I can't recall if the A6 cam is stamped differently than the A1 and A4 cams... I think it may be, and I'm quite sure it's been discussed before on here.

[DJ metadelic]

A4 is not a dual runner. That would be the IAB system, which is only on the A6.

Ahhhhh, okay. Thanks for clearing that up. I've been asked the same thing before and didn't know what to tell them lol.

[Granite CB7]

That is an a1/a4 camshaft, those have 3A stamped on the dizzy end, the a6 cam is stamped 4B.

[deevergote]

Thanks Dan! I should've known you'd be the one to provide that info

[91cblx]

The A6 cam is not a dual lobe cam. You're thinking of VTEC, and the F22A does not have that. You have 8 intake valves, and 8 exhaust valves... 16 valves total, and one lobe on the camshaft for each valve.

I can't recall if the A6 cam is stamped differently than the A1 and A4 cams... I think it may be, and I'm quite sure it's been discussed before on here.

Okay I will search through the posts Thanks for the info. I will see about different stamps also just wanna see if its an A6 or whichever it could be.

[91cblx]

That is an a1/a4 camshaft, those have 3A stamped on the dizzy end, the a6 cam is stamped 4B.

Alright