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Old 08-21-2003, 03:24   #1 (permalink)
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roll Camshaft + reco head pics.

Hi all.

here are a few pics of my reconditioned head (off my car . looks brand new! :)

http://www.albanylan.com/falcon/head1.jpg
http://www.albanylan.com/falcon/head2.jpg
http://www.albanylan.com/falcon/head3.jpg

and here is a pic of my cam, see the area where i have circled on the pic, i was wondering if there is meant to be some sort of bearing there?
the reason i ask is there seems to be no visible signs of wearing. I realise the cam itselft sits on the head, and i can see where it rubs on the head itself. but i would have thought some pressure would need to be applied to the top of the shaft?
hope that made sence?
heres the pic
http://www.albanylan.com/falcon/cam.jpg

Cheers,
Gavin Kennedy
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Old 08-21-2003, 04:13   #2 (permalink)
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Re: Camshaft + reco head pics.

there is no bearing there on that part of the head. the way the cam sits on the head that is a point of the cam where there is minimum thrust and friction. I asked the same question at work when I reco'd a head and was told by the mechanics that it is the way it is. Don't stress about it.
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Old 08-21-2003, 06:45   #3 (permalink)
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Re: Camshaft + reco head pics.

the rollers in the rockers are what hold the cam down.
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Old 08-21-2003, 08:00   #4 (permalink)
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Re: Camshaft + reco head pics.

You should clean up the chambers a bit, if the heads still off.
Get rid of all those sharp corners, and clean up the carbon on those valves.

Get a set of iridium plugs and put them in while the head is off, you can get indexing washers and make them all face the same way.
They will last for at least 50,000 kms.

You will then be able to run more timing because it wont ping as bad.
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Old 08-21-2003, 19:44   #5 (permalink)
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Tongue

iridium plugs? as in spark plugs?
why does this need to be done while the head is off?
also, what difference does it make if they are all facing the same way?

will it make any difference if i clean up the valves? get rid of all the carbon etc, and take the sharp corners off the chambers?
should i just use wet & dry to do this?

sorry for newb questions...

Regards,
Gavin Kennedy
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Old 08-21-2003, 20:37   #6 (permalink)
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Re: Camshaft + reco head pics.

There are slight gains in indexing the plugs, while its off, you mights as well do it.
See this: http://www.automedia.com/xml/pht/pht20001001sp.xml

Cleaning up the valves will reduce any pinging etc that can be caused by the existing carbon build up,
Cleaning up the sharp edges pretty much should be done with a die grinder, sharp edges promote pinging, by getting rid of them you can advance the timing, and get slightly more power.

while your at it, you could get hold of an EL cam and stick that in, You should be able to get one fairly cheap from a wrecker, or from someone whos upgraded to an aftermarket cam. You will notice a better midrange and top end.
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Old 08-21-2003, 22:12   #7 (permalink)
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will the EL cam fit straight in to my engine with no modifications?

and where do i get iridium plugs? ill ask at coventrys for those, aswell as some indexing washers.

Cheers,
Gavin Kennedy
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Old 08-22-2003, 00:30   #8 (permalink)
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Re: Camshaft + reco head pics.

i didnt think the EF/EL cams were a straight fit into a 3.9 head - is that true?
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Old 08-22-2003, 02:32   #9 (permalink)
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Re: Camshaft + reco head pics.

Quote:
will the EL cam fit straight in to my engine with no modifications?

and where do i get iridium plugs? ill ask at coventrys for those, aswell as some indexing washers.
The EL cam will fit into a 3.9 or 4.0, The rocker ratio was the same up until the AU ( i think )

Coventrys should have the iridium plugs, as for indexing washers, just use copper washers that fit the thread of the plugs, get hold of different thicknesses, and only use one per plug.
Or performance places should have the proper indexing washers available.
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Old 08-22-2003, 03:10   #10 (permalink)
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Thanks guys, youve really been a great help, ill let you know how i go with everything, next on list is extractors and 2.5 zorst, prolly have to goto perth to get that done, if you know of any good places in perth for zorst, let me know. The bloke here in albany told me that 2.5 is prolly too big, and will lose power and economy, should go 2.25, is this accurate?
i was thinking 3", but too ricey maybe...

thanks alot again.

Regards,
Gavin Kennedy
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