Advancing factory cams?

Good evening,

I am new to the forum, and find much of the info here very interesting. As of current I am building a stock 900 motor, nothing crazy 28mm carbs, Vance Pro Pipe, new rings, and gaskets on stock pistons. I am wondering, has anyone advanced or retarted the stock cams in one of these motors? Iw willing to buy adjustable cam sprockets, and I have a degree wheel. Just wondering if anyone has any experience with stock cam timing?

save yourself some money,use rat tail or chainsaw file to elongate slots in stock sprockets a little

Coop, I doubt You'll see significant gains from changing cam timing w/stock grind. (more like to gains attributed to 4/1 exhausts/pods) IE massaging where power is delivered. You MAY However recapture some lost power if your' camchain is worn enough to have degraded stock timing... If you go this route, Plummens rec. is a good one, If I were to play the game, I'd experiment w/advancing intake (early open)a few degrees w/ stock exhaust, hoping to gain a little compression. always happy to learn from others, luck g

Definitely doing the chain. I have some time on my hands, so I'll give it a try, advancing the intake a bit. I have a feeling the gains are minimal. Thanks for your reponse.

Out of curiosity...what are you trying to achieve?

Examples:

Quicker acceleration...
Cheapest: Go two up on rear sprocket tooth count...
Or if you want to feel the old girl pull... low to mid range performance cams... i.e. .365 Webcams dialed in at 105* lobe centers.... (Adjustable sprockets required).

Lose a little on the top end but let's be serious for a moment, who here truly rides (daily driven KZ) over 120mph... Rare if ever due to felony driving charges...

Head/Valves: Over sized valve job w/P&P to match the intakes. Now you'll feel some difference no doubt! :woohoo:

In any engine build... Ask yourself these simple questions...

1) What am I truly wanting to do, expected performance.
2) What's my driving style...Majority of the time.
3) Low to mid performance or WOT?
4) Gas mileage or performance...
5) Street ride-able, enjoyable, maintenance requirements...

OMR

you would be surprised at how much better the bike will run if you degree the cams in, like everything that is mass produced the cams are never really set and can be off by several degrees one way or another.

definately,any mass produced motor can benefit from blueprinting

Brings up a good question...

OEM Cams for the KZ900, maybe other KZ models as well, with non adjustable sprockets thus lobe centers set @ 110....

With this same cam using adjustable, what could one truly expect in a advancing a couple degrees...

Or do you go 4 degrees up on the exhaust and 2 down on the intake cam....

Hmmm, I get what it does in my cam selection but unknown to stock OEM brad range cams....

Oh wise one.... Please provide the all mighty answers....

OMR

factory cam timing isnt always right on the nuts to begin with

Dale Walker says in the video: A good mod for stock bikes both suzuki gs and kz kaws, is to bring lobecenters down to 104 to 105 intake and exhaust. He stated this is good for 4 to 5 horsepower. That's alot more than the the old fogies can count to:woohoo: I talked with Dale on the phone once and he said they used to run lobe centers "way out there", and "That's how we use to cheat in the stock class". In any chain driven timing set up the intake is constantly retarding as the chain stretches. Never like stock as Plummen said.

Just for the fun of it, I would like to see what a factory stock compression, stock valved motor can do. In the automotive world, I have seen what cam degreeing can do. I have found, lobe center has a lot to do with making power, just as much as duration and lift. I know on a small block 351 to 400 cubic motor, max piston speed occurs at about 70 to 75 degrees ATDC. If I can have the valve off the seat, as much as possible by that point, I can get a really good pull through the intake port. I am new to the small kz motors, so I'm experimenting to see where the little motor wants the valve, in order to pick up some horsepower. In reality, I'm being a bit lazy, and trying to see if anyone has already figured it out.

You dont happen to have anymore details on those crazy lobe centers, do you? Or maybe a contact?