750 Spectre rebirth.

Raising or lowering the level is a great way to tune the overall spring rate. Less oil, softer spring effekt, more oil stiffer effekt.

faffi wrote: Raising or lowering the level is a great way to tune the overall spring rate. Less oil, softer spring effekt, more oil stiffer effekt.

Am thinking the better practice may be to use a different weight fork oil, while keeping levels within factory specs.

Good Fortune!

That will vary damping, not effective spring rate.

re: your float height is about 18mm. I can't set my floats that low. They bottom out ("top-out") at about 18.5mm. When your floats are at 18mm, do they look like they're about to bottom out against the carb body?

The manual referenced covers the KZ750-E and KZ750-H models, not the Spectre KZ750-N1. Apparently they all have the same carb model but I think the jetting is different? also the manual doesn't specify the float height. it says fuel level is 36.5mm from the center of the carburetor bore to the surface of the fuel in the float chamber. Uh-huh.... lemme get my "carb bore to fuel surface internal auto-measuring gauge" thingy out and then I can go right out and measure that one....


At 21mm float height I just started my bike with default 2-turns-out mixture screw settings. It runs kind of ok with full choke; but won't stay running without the choke on full. Not even if i rev it up high and then slowly lower the choke -- stalls quickly.

Is that evidence of the fuel level being too low in the bowl to be sucked in by the correct jets?

also note -- i didn't hook up the air cleaner boots. Would that cause a stalling problem (not enough resistance/vacuum)?

Here's the pics of some home made carb parts-



My original has a crack in the plastic,so I used this brass fitting with yellow teflon-not so good,still had a small leak.Next I slipped pieces of fuel line over the ends that fit in the carbs,better but still has a small leak so I am going to repair the original with some fiberglass and cloth that I use on my radio control planes.



I lost the plastic plugs that were in the carbs so I used a piece of tubing to cut rubber plugs,so far they work fine.My first attempt wasn't holding up to the gas.The replacement plugs are to expensive for this cheapskate.

Can some one explain the bolts in the end of the mufflers? I know the pic is lousy,I will take a better one tomorrow

Muffler mystery bolts.Can any explain?

uhm,
not sure why they put those bolts there unless they had drilled some holes to reduce back pressure, and then decided they did not need less back pressure and put bolts in to plug the holes.

leon

Thanks banshee that makes sense.Finally got my gas leak fixed so I've doing some riding,what a blast-been 35 yrs since last ride.The bike runs great except for a bit if stumbling around 3.5k to 5k,below and above that-Smokin!.

Well I took out the bolts in the mufflers and it did get a bit louder,seemed cool but became quickly annoying and the performance seemed to suffer,so I put them back.Mo better.Today I changed the fork oil with belray 20wt.Took a while between rain showers but man what a difference,no more clanging front end.The manual say the shocks can be drained of oil through the air fittings and refilled with 5wt oil,Has anyone done this?
Was talking with my buddy Dave who has been ridin Harleys for the last 30 yrs. and he warned me to be careful because when tuned and running right those Kawasaki"s can get away from you real quick.
I also gotta find some mounts for the front turn signals,The current clamp mounts would fit the handle bars and the PO wire tied them to the forks.Steady progress.

Don't listen to your H-D riding friend; the bike will only get away from you if you use too much throttle for the conditions. There are several 200 hp bikes out there being ridden every day, your bike only have theoretical 80hp and likely no more than 70 honest ones. Use common sense and you have a good bike.

Not sure if I understood the thing about front indicators, but in stock form they hung on the handlebars on the Spectres.

I understand,he is a concerned friend and wants to be sure I understand that Cape Cod in the summer is a scary enough environment and I should become familiar with my bikes capabilities.As far as the turn signals I have a couple pics that will show the current mounting.Please disregad the funky mirrors,I neede some thing and they were cheap.



I like the look with the signals on the forks but I need to come up with a way to mount them.