TOPIC:

As I have mentioned before, my 77' KZ1000 is currently being rebuilt. Wisco 1075 kit, Good head port w/slightly oversized valves, RS34mm carbs., Dyna kit, and Vance/Hines 4into1.

I'm really torn between using the "stock" cams or using Web 119 cam ? Want a really "Good" street motor and looking for excellent Mid-range Performance. I'm not going to race this bike and rarely will be riding in upper upper RPM range.

Please give me an "Honest" opinion if the stock cams are good enough or do I need too step up to the Web cams to realize the "true" performance potential with the head and carb. upgrade ?

Good "drop in" street cams are worth the investment.

Have you talked to your engine builder about this? Port flow (intake and exhaust), carb flow, exhaust system flow and cam profiles need to be harmonized to get the best out of each. Since you have already chosen the carbs, exhaust system and valve size, the porting and the cams need to be chosen to compliment the others. The guy who is doing the head work should know this and should be able to recommend the cams that will work best with what he is doing.
With what you have described, I'd bet that the stock cams are going to be the weak link here and will not be able to take advantage of all the money you are spending.

Duley noted ! $600.00 is a lot to spend on cams and just didn't know if the extra "few" HP it gives you the upper RPM range was worth it ? Have no experience with cams so didn't really know where they come on at in the RPM range ? It be interesting to see a comparison chart or graph if one's available ?

How many horsepower and where in the rpm range they peak, varies quite a bit. There is an almost infinite variety of cam grinds, and you can mix and match intake and exhausts and with adjustable sprockets you can move the power peak around a bit by advancing, retarding or changing the lobe centers.
For your goals, a set of cams that make more power everywhere, peaking in the midrange would be ideal.

See if you can find a build thread by member Old Man Rock. I seem to remember his build is similar to yours.

It would be interesting to see what cam he is using in his build. My engine builder recommends the Web 119 cam with adjustable cam sprocket. I was being a little "frugal". And yes, midrange is where I would like the bike to make its power.

How would go about it to find His Build Thread ?

K410s are the best for this application, but require cam clearance the head.

My daily rider is now running stock cams degreed at 110.
It has 1075cc Wiseco's with 1 mm o/s valves in ported head, 32mm Mikuni smoothbores, 4-1 pipe and dyna 's' ignition.
It pulls like a train, very strong and smooth all the way from nothing and into the red and is a much better daily bike than when I had 410's in it and still returns good gas mileage.
The bigger carbs, valves and headwork are the real key here to getting decent extra power overall without shifting the curve up the revs with a more agressive cam profile.
I initially intended to only swap the cams out temporarily as I was going on a long distance tour but it worked out so good I never put it back.
Swings and roundabouts.

My Andrews 1X cams work great. I guess 2X would have been better and degreeing them would squeeze out a few more ponies but I'm happy with what I have. Some day maybe.
Steve

kzdcw wrote: It would be interesting to see what cam he is using in his build. My engine builder recommends the Web 119 cam with adjustable cam sprocket. I was being a little "frugal". And yes, midrange is where I would like the bike to make its power.

How would go about it to find His Build Thread ?

You can use the search tab above to find users. The basic info is in his signature. I bet you can go into his profile to find the full build thread, even though it was several years ago. Here is a link to a thread he posted in. You can see the basics in his sig. Maybe if you messages him, he'd share some details.


www.kzrider.com/kunena/3-carburetor/6074...minum-velocity-stack

I like Zed1015's approach and set-up. I'm sure with Performance Cams your going to get better performance but strong Mid-range and occasionally blasting it up to 100 mph, is probably the way the bike will be ridden most of the time.

GPZ cams or Andrew cams would be a consideration, but scarce as "Hens Teeth" .