need cam timing HELP

ok first of all my bike is still not together. no valves have been bought for the head yet but i am conserned about putting it back together. looking at the book my cam sprockets are diff. someone before me put adj sprockets on. my exhaust sprocket has a small arrow between the slot and a tooth, but that is all the marks on it. and the intake cam has a arrow and about 90' form it it has two dots, and that is all the marks it has. also is there any way to tell if the cams are not stock. i found the carbs are not stock, has electronic ignition, 4-1 exhaust and who knows what else. any one have any idea on this. please help

Pictures would help....

"my cam sprockets are diff. "...
Assuming you're speaking of the sprockets that attach to the camshafts, if the bolt holes are slotted or you have bolts all the way around the sprocket than these would be adjustable cam sprockets.

If you did not remove the sprockets off the cams than leave them alone unless you plan on CAM degreeing these in...

I wrote a tutorial on the process...
NOTE: Has some humor/language others find offensive... but the information provided is 100% accurate and does provide you everything you'll need in tools and formulations/step by step process to accomplish cam degreeing...

members.cox.net/ruinsofstei/MOTORCYCLE%2...UCKS%201-28-2009.pdf

OMR

Did you just buy the bike recently,and have never heard it run?
I'm thinking that you might have a modified engine.
Do you have the head off right now? If so,what's the cylinder bore size?
Got pics of those carbs?
Do you see any grinding marks around the shim bucket area?(clearance for bigger cams)
If you do,you probably have performance cams that have been degreed,like OMR mentioned.
More info and pics would really help...

i have a few pics of the cams but they dont show much. the sprockets havent been removed from the cams, and they are slotted. the bike had 8 bent valves when i got it. a piece of metal fell down and got run through the lower gear and the cam chain. i think this is what bent the valves and downed it 20 years ago. and the carbs are from a 80ish kz1000 with accelerator pump. the trouble is the book is for stock sprockets and so the marks seem to be diff than mine. i'd like to leave the actual timing adj alone and put it together and see what it is like.

As long as you are SURE that it wasn't the cam-timing(degreeing) that bent those valves!:ohmy:
If so,like OMR said...you'll have to get them re-degreed,or go back to a stock sprocket.
But going to the stock sprockets will limit the capability of those cams,if they're performance cams.

How do you know it was a piece of metal that did the damage?

on the cam chain tower there is rubber spacers with steel plates under them. one rubber and one steel plate was missing when i got the bike. i could redegree the cams but am not sure if they are stock or not. all mods were done in the 80's, i got the bike form my father in-law, mods were done before he got it.

wes_scooter wrote:

on the cam chain tower there is rubber spacers with steel plates under them. one rubber and one steel plate was missing when i got the bike.

Yup...that would do it. :pinch:

Were the tower bolts(4 of them in total) still there?:huh:

More info needed,on those cams...any markings on them anywhere?
Check them out...check the ends of them for any stamps.
Pics for sure if you can...clear pics...

there are these markings on the center

5 L on left of sprocket, and a R on rt side
on the end of the exhaust cam is 4 lines 2 vertical 2 horizontial. the intake cam has more lines.


yes the tower bolts are there but i think the father in-law might have done that part. dont know though

i want my mommy.....the bad man touches too hard....

PLUMMEN wrote:

i want my mommy.....the bad man touches too hard....

Takes your meds,Plummen!:laugh:


Hmmm,those ends markings...don't sound like stock cams to me.
Post some pics ok

and here is the end of the exhaust one. its the best of the two pics.

well i cant get my other pics to upload