Cam timing help needed
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Senior Member
Joined: Oct 2008
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From: Cambridge, Ontario, Canada
Cam timing help needed
I ran into a little snag with my buid last night. I think I have it all firgured out but want to double check before the valve cover goes on.
This is what happened:
After isntalling the cams, next in line was valve adjustment. This is when things started not making any sense. So after a good look and some thingking, it was apparent that the two cams were 180 degrees out (had the sprockets on the wrong location). The timing marks on the sprockets were dead on but the cams were not.
Does anyone have a diagram or picture of the cams where the crank is at "T" and the cams are at the "EX" and "IN" spot? I would like to compare the cam lobe directions to verytfy it with mine. Only need the direction of the ends, as that's sufficient enough for me.
Thanks for any help!
Imre
This is what happened:
After isntalling the cams, next in line was valve adjustment. This is when things started not making any sense. So after a good look and some thingking, it was apparent that the two cams were 180 degrees out (had the sprockets on the wrong location). The timing marks on the sprockets were dead on but the cams were not.
Does anyone have a diagram or picture of the cams where the crank is at "T" and the cams are at the "EX" and "IN" spot? I would like to compare the cam lobe directions to verytfy it with mine. Only need the direction of the ends, as that's sufficient enough for me.
Thanks for any help!
Imre
Redcoat, & Maxwell's Silver Hammer, MVN and curmudgeon
Joined: Dec 2007
Posts: 11,608
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From: Mud hut, Zululand
Best I can give you is the link to the manual:
http://myweb.tiscali.co.uk/midlife/i...ice_Manual.pdf
as I recall it has good pics and a full writeup.
http://myweb.tiscali.co.uk/midlife/i...ice_Manual.pdf
as I recall it has good pics and a full writeup.
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I cant imagine you did that job without a manual?
If you follow the manual that Pete gave you the link too , you cant go wrong Imoo..
The section on setting Cam Timing is pretty good and very clear ...
If you are not too savvy with internal engine repairs, I have a good rule of thumb mate ....
Check your work
re Check your work
then leave it for a while ....
and come back to it and re Check your work again !!!
Hint!! with ANY top end work
NEVER hit the starter button till you have wound the engine over quite a few times by hand ...
The last thing you want is to bend valves or damage pistons
good luck mate ..
If you follow the manual that Pete gave you the link too , you cant go wrong Imoo..
The section on setting Cam Timing is pretty good and very clear ...
If you are not too savvy with internal engine repairs, I have a good rule of thumb mate ....
Check your work
re Check your work
then leave it for a while ....
and come back to it and re Check your work again !!!
Hint!! with ANY top end work
NEVER hit the starter button till you have wound the engine over quite a few times by hand ...
The last thing you want is to bend valves or damage pistons
good luck mate ..
Senior Member
Joined: Apr 2008
Posts: 562
Likes: 11
Photos here any help?...
http://gonzo-home.com/cbrmaint.htm#Valves
https://cbrforum.com/forum/showthrea...lve+Adjustment
http://gonzo-home.com/cbrmaint.htm#Valves
https://cbrforum.com/forum/showthrea...lve+Adjustment
Last edited by Naga_Thai; Feb 15, 2009 at 03:05 AM.
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Senior Member
Joined: Oct 2008
Posts: 303
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From: Cambridge, Ontario, Canada
Thanks for the help!
I was using the manual (have it printed out) but got a little bit ahead of myslef. Installed the cams before setting the crank to TDC. Because of this and the fact that the cam caps were installed, I lost the refernce point that the manual mentions, (casting marks on the cams). I do have the starter fuse out, never truned the engine over by anything but by hand, and and the valves never contacted the pisotns. I've done work like this many times on cars so I know not to crank the engine over untill its first done by hand. Most of the times, manufacturers would design parts so they can only go together one way however in this case, Honda didn't do that with the cam sprockets and sure enough I mixed it up.
I was using the manual (have it printed out) but got a little bit ahead of myslef. Installed the cams before setting the crank to TDC. Because of this and the fact that the cam caps were installed, I lost the refernce point that the manual mentions, (casting marks on the cams). I do have the starter fuse out, never truned the engine over by anything but by hand, and and the valves never contacted the pisotns. I've done work like this many times on cars so I know not to crank the engine over untill its first done by hand. Most of the times, manufacturers would design parts so they can only go together one way however in this case, Honda didn't do that with the cam sprockets and sure enough I mixed it up.
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