A1 and A6 camshaft

[oyajicool]

Is there a way to tell difference between the two camshaft without taking measurements and what nots? Like stamping or something?

[cb7legend]

Do you mean when the camshaft is out of the engine or inside? I would assume outside.

[oyajicool]

Camshaft out side, removed from head. Would there be part numbers stamped or embossed?

[Leung]

I'm not sure if you've ever noticed all over your intake manifold or engine head, you might see PT3 or PT4 on a sticker or on actually on the part as it was forged.

I just looked on Majestic Honda, since my 90 DX has an A1 engine, the center set of characters in the parts number said PT3. On a 93 EX, it said PT4 but i'm pretty sure the ECU for an A6 engine is a PT6. So either look for a PT4 or PT6.

http://www.hondaautomotiveparts.com/...+-+TIMING+BELT

So when you have that cam in your hand, you might want to look at the ends of it for any engraved numbers or letters.

[Tippey764]

I've heard that the a6 cams say 4b on the end like this but im not 100% if thats exclusive to the a6 cam



^ function>form's picture

[oyajicool]

Trying to buy a reman cylinder head, claimed to be an A6 head from long distance. I was hoping to say the seller to look for this or that to confirm what he is trying to sell is actually A6 cam and A6 head.

Well the heads on A1 and A6 are the same part numbers but the shafts and valve springs are different. I want to know at least the cam is what the seller claims what it is, A6's cam by stamping, embossed or other wise from Honda.

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I didn't see the photo when I was making the post. This end in the photo is distributor end, isn't it?

[Tippey764]

yes that end is where the distributor lines into the cam.

[oyajicool]

OK. Thank you.

Since I have A1, I will pull off the distributor and see if I can see stamping like that on the camshaft when I get the chance. If it says something other than 4B, then we know that it is possible 4B stamping is A6 exclusive.

I hope some else also can contribute on this, like taking a poll. ???

[H.M.]

Anyone else have an opinion or more info on this?

I have what I've been told is an A6 camshaft in my hand. It's stamped 4B on the end as in Tippy's picture above.

How do I determine if it's really an A6?

I have a micrometer. Does anyone know where I get the dimensions of an A6 camshaft?

[spade]

Before i junked my 93 Se, i kept the camshaft, i just checked it and it also says 4B, never noticed it before, lol

[deevergote]

Now we just need someone with a known A1/A4 camshaft to compare. We know A6 camshafts say 4B, but we're not certain (in this thread) that A1/A4 camshafts do not!

[cloudasc]

I just checked my a1 camshaft that was pulled before my a6 swap, its stamped 3A. I would post picture proof, but when I try and click upload on photobucket, its telling me "The action that you were trying to perform has failed. ". I've been saving it for the rainy day I send it out to get it reground.

[AeyJayCB7]

Here is a picture of the Camshaft stamp from an F22a1/a4

Posted by another member here.

[oksleeper]

Just had to pull my distributor on my A1, what do you know it too says 3A

[NightmareCB7]

Yes the A1/A4 are 3A and the A6 is 4B. Ive checked all 4 of my F22s, 2x A1, 1x A4 and 1x A6.