identifying camshafts

[marcksavoie]

Hi!

I bought some intake and exhaust camshafts from a board member and before I install them I would like to know how to identify them. I know one of the 2 has something casted on it (but don't know for sure as I am at work). The other one is grinded where the other hase something written...

How could I identify the camshaft for sure? If I get is measured from a machinist could I have the correct specs and compare it to the specs that I found un the boards?

Thanks,

Marck

 

[changedman]

look at them. one has I in it, the other, E

 

[TurfBurn]

look at them. one has I in it, the other, E

Actually it says IN and EX :-D and it is cast in down between the last two sets of lobes away from the cam gears if I remember correctly (was doing cam clearances last night for 2 hours.. I should remember but I don't).

But as usual Pat is dead on LOL.

Later.

 

[marcksavoie]

Thank you!

I will have a look at this as soon as I come back from work!!

Marck

 

[changedman]

But as usual Pat is dead on LOL.

hey now whats that supposed to mean

 

[TurfBurn]

Doesn't mean anything! I actually meant that.. you ARE always dead on... the LOL was because I was razzing you before... but nope, you are always right as far as I can remember... I was just augmenting your response...

 

[changedman]

meh

 

[marcksavoie]

OK! So I had a look at the camshafts this morning... and took pictures to show you cause one had nothing written on it and the other as you told me had IN. BUT when I put them side by side they seem the same to me... The only differences is that one is grinded where the other has FSH9 (IN) written on it and one has a T and the other has a D. And when aligned the small pieces next to the FSH9 letters are not placed the same... What are those anyway?

Can anyone help me out and tell me if there is something wrong??

Thanks,
Marck

PICS can be found here:
http://homepage.mac.com/marcksv/PhotoAlbum4.html

Thanks all!

 

[TurfBurn]

I think something is wrong... I'll double check tonight if I can... but I'm pretty sure one should say FSH9 and the other says FSH7... not 100% sure though... I'll look at your pics and see what I can tell.

 

[marcksavoie]

I agree!

One definetely says FSH9 (IN) as for the intake camshaft I believe.

The other is grinded where it should be written FSH7. You'll se on the pictures...

And they look quite the same to me...

 

[TurfBurn]

I have an extra exhaust camshaft if you need one . but I'll double check tonight like I said, but they do indeed look QUITE the same!

EDIT: Shoot.. thinking about it, I think I have an extra intake, not an extra exhaust. Doh!

 

[marcksavoie]

PM me the price for that exhaust camshaft. I'll try to sell my spare intake camshaft in the meantime when I'm sure I have 2 intake camshafts! ;-)

Marck

 

[TurfBurn]

Will do.. and I'll double check that I have an extra exhaust...

 

[marcksavoie]

Thanks!

 

[JustMe]

At the end of the camshafts there should be a pin. If you place them side by side, the lobbes should point at the same direction but the pin is 180 degrees at the other side.

 

[marcksavoie]

Hi all!

Actually the exhaust camshaft I was looking for is a FS9P (FSZE mazdaspeed). I tought that I had a bogus camshaft since the identification was grinded... But I have went through posts and found out that I might have the correct camshaft as the mazdaspeed exhaust camshaft is no longer available and can me made from a JSPEC FSZE intake camshaft which is reground to mazdaspeed exhaust specs...

This thread explains the situation:

http://www.msprotege.com/forum/showthread.php?t=47397&highlight=FSH9

So I have aligned the pin on my camshafts and one points towards the intake and the other one towards exhaust... So Guess I am ready for installation! ;-)

 

[TurfBurn]

Our cams should run a lobe seperation angle of around 106 degrees when installed... I've never measured it, but that's pretty much the standard seperation that then allows for proper overlap and the like between intake and exhaust. Obviously just time the cams as appropriate as based on the pins and timing marks, but you'll want to double check that the lobe seperation angle on any given cylinder is somewhere around that 100 degree mark... I'll try to double check what we actually are supposed to run... but that is one of the advantages of a dual cam motor... you can change the lobe seperationg

 

[JustMe]

This 106 degrees comes from cam gears, but the cams themself are basically the same except the pin (that goes in the cam gear) at the end of the cam, which is on different sides.

Our cams should run a lobe seperation angle of around 106 degrees when installed... I've never measured it, but that's pretty much the standard seperation that then allows for proper overlap and the like between intake and exhaust. Obviously just time the cams as appropriate as based on the pins and timing marks, but you'll want to double check that the lobe seperation angle on any given cylinder is somewhere around that 100 degree mark... I'll try to double check what we actually are supposed to run... but that is one of the advantages of a dual cam motor... you can change the lobe seperationg

 

[TurfBurn]

This 106 degrees comes from cam gears, but the cams themself are basically the same except the pin (that goes in the cam gear) at the end of the cam, which is on different sides.

right... I was just pointing out that if you don't put the cam gear on the pin correctly you won't get the right lobe seperation. Additionally, if you don't line up the timing marks correctly you won't get the lobe seperation either... which in some cases is actually not undesireable as you can advance or retard your cam by that amount... but I don't remember how many teeth we have so I don't know what a 1 tooth misalignment yields for advancement or retarding... If it is like 4 degrees that would be awesome... but that would require 90 teeth which I don't think we have LOL.

 

[Brian MP5T]

So the cam was simply reground and not labeled... Mmm, Dangerous...