more power?

I'm on the Nad bandwagon...... head out!!!

ok. It's 900 bvored to 1015. It has .407 cams and 28 carbs. mm. 28 carbs 1mm each. I'm ok with the 4ft cams, tis the chamber to be jolly? Has plenty of valve clearance but is the squish optimum? Theres one of those two piece head gaskets in there and those are thick. So I know the squish isn't sqush. Am I making any cents here? Pay attention class, this is where it gets rough. I welded my head but my brain swelled. Now I want to try welding the bikes head. Friend won't let me abuse the welder again like I did. And that's ok. It's not fair that one number is bigger than the other. But fair is fare. I Don't like the ridge around the intake valves and think it would flow better with it removed. But I'm just not sure. Not just about the bike but life in general. Well that's another story. And I'll get to that one day. For now: do I have enough comprehension? Should I squish? Can I unshroud the head or will I risk infection? I'm very concerned about brain damage here messing with my head. All the power is coming from the top, not much down low. I'd like to get a faster burn with more bang. I know it will do it but it's at the point where I could hurt the flow if I'm not careful. That's why I need you guys to throw in. I'll probably use a thin copper gasket rough it up around the cylinder seals and oil passages and use rtv. I know it sounds bad but I know it wont leak. If I lose too much valve clearance I'll cut the piston tops. Cuz I don't care what they look like. As the bike is now it will stay with a zx6 from 30 to 130mph and pass it at 90 no problem. That's with a 160lb rider on. I want more and Know this is where I COULD get it. And by the way I lost 32lbs. Now I'm 218. So who was on my bike? No one. It was me at 255 against a cbr600. I gave u the computer estimated gross power rating. I gave it to the county judge once-he said you'll never be and office executive and gave me 4yrs prison. Then he turned out to be a "grabber" and got fired. That's just plain ENOUGH!

nads.com wrote:

RUN for cover. I've been off this bike for a year and a half waiting for my driving privilages

Don't you think its fast enough?:woohoo: :woohoo: :woohoo: :woohoo:

When you o'ring the block, the o'rings have to bite into the copper gasket far wnough for the head to come down and squeeze the rest of the gasket to seal oil passages. I have seen old school gaskets that were not soft enough and the o'rings actually held the head up off the block. Seals compression fine, but what an oily mess when it was started.

You going to have the o'rings bite into the head?

Jay

All I wanna say is that if your intake port diameter is much bigger than on the intake boots, you're causing unwanted pressure pulses that weren't intended by the manufacturer. Mr. Hemholtz wouldn't be happy with that.

I have specail o rings with teeth on them, they'll bite your finger if your not careful. Thanks for the tip on the thickness. The intake boots are enlarged to match the ports. Larry can you plug in the proper math here, take it easy the calculator's only got 8 digits.

unshrouding the valves can only be done as much as the bore will allow. it helps flow at low valve lift, but at the cost of compression. you can mill the head to gain back compression. make sure its done by a pro. milling the block or running a thin head gasket or a thin base gasket can tighten up quench height/ squish. make sure you measure it properly. same for PTV clearance. and check/set cam timing. PTV changes with cam timing so be careful. measure everything.


weld the head on... now thats a new one lol

Maybe I'll o-ring the head. I,ll look at all the oil passages first and it'll be clear what to do. Piston to valve clearance is no concern since I measure it anyway whenever I make a change in cam timing or head gasket thickness. With the unshrouding of the valves, I'm not talking about widening one side of the bore (like a car head), but cutting down the area on the roof of the chamber on a kz900 head where there is a ridge close to the valve. It seems the intake charge could possibly flow in easier if it did not run into this ridge or raised aluminum. The pistons are pounding out the base gasket and stretching the studs. So I have to go there anyway and re-arrange making sure everything works in harmony. A little grinding here, a little banging there, and a little magic never hurts anything but a 600. It's kind-of like a quest for power. Not a mission to destroy. And once the squish is issue is squashed, the flow is go, it's just going through the motions to get what I WANT! You know, why do I get this feeling some day I'm going to be standing all bloody, holding a piece of crankshaft in one arm, face black, eyes wide open. Tell me the answer to that one and I'll start building right away! Away from that part of the deal. I think one eye is already bigger than the other one. :blink:

Truly, I'm not trying to be insulting here but in following this thread I have to ponder.... :whistle:

I'm presently in the CAM degreeing process and in my studying of the Dale Walker Cam Degreeing DVD and numerous articles on the subject matter, I find this is an exact setup requirement and precise procedure for dialing my motor in for optimum performance. Piston to head decking, piston chamber clearance, valve clearance, valve timing, shims, compression, advancing/retarding, cam lobe centering etc... all play an extremely important part for obtaining that goal!

In reading your replies, items such as "A little grinding here, a little banging there", "valve clearance is no concern since I measure it anyway whenever I make a change in cam timing or head gasket thickness.", "I have special o rings with teeth on them", "no gaskets" thus loss of compression not to mention oil all over the place, "RTV", "Now I want to try welding the bikes head", "If I lose too much valve clearance I'll cut the piston tops :blink: " etc.... on and on...

I think to myself...

1) Either you're truly good at this... Magician/Guru/Yoda Master...
2) You have no friggin idea what you're rambling on about.
3) You're full of it and just blowing smoke up our asses.
4) You're just really, really stoned! :blink:

Seriously, it's probably just me not understanding what you're posting in power quest but I'm having some real difficulty following this....:huh: :dry:

Ok, I'll be quiet now...

OMR, you took the words right out of my mouth.

Old Man Rock wrote:

I forgot to RUN for cover, but at least I'm a quiet grabber. And I'll take Cam Degreeing for $200, Alex.

:laugh:

It seem that u are triing to find a fraction of a HP without a flow bench or Dyno.What if it ends up with less power? All the power to u for triing. I just wory about measuring the dif .How will u know if its better?
Way more power can be had cheaper with higher compression pistions or bigger pistons and cams? Put the head on a flow bench.
If u reduce the squish too much u cant run pump gas, is that a consern?
i too am triing to find the magic # for squish clearance while on pump gas.
Its always fun to have an open dialog and hear all the opinions.