TOPIC:

Got my electronic Autometer automotive tach installed yesterday.

First I made an adapter so the automotive tach would work with the KZ dual coil ignition.

Here's the circuit I used:



I used 005 diodes(600PIV) instead of 007's(1000PIV)...it has worked fine up to 10K rpm so far.

The diodes keep the fire signals for the coils from backfeeding between the coils, but the tach can get the signals from both coils.
They are like electrical one way valves.

I removed all the stock gauges and brackets, and the speedo and tach cables.

I unplugged the dash harness inside the headlight bucket, and wired the tach in the bucket as well.

This tach has signal, key on power(for setting the shift light), dash light, and ground.

Here's how it looks:




I need to contour the ignition switch portion a little more, that's the only part I'm not entirely happy with. I may paint the bracket black as well.

The tach is AWESOME. It responds so much more quickly and crisply to the engine. Shift light works great too. Probably weighs less than half of the old setup, and cleans up the front end quite a bit.


Weighed the bike as well. 500lb's with a half tank of gas and all fluids, before the gauge swap.
I thought that was pretty good!

i like it!

Thanks!

Question for those running cams on a 1015cc engine:

How's the idle? Where did you have to set yours and what cams are you running.

I was told this motor had cams and high compression pistons, but I have been assuming it was stock as I was not the one checking things when the engine was apart.

I did a cold compression test and got 130psi...sounds stockish to me.

Everything checks out(timing, clearances, sync, pilot adjustments done, new carb boots, floats checked, ect.), but the motor runs quite choppy at 1100RPM. Sounds like some cammed drag cars I've had.

Smooths right out at around 1500RPM.

Feels mushy on power delivery below 6K RPM. Takes off like someone hit a switch after that.

VM26's, 4 into 1 no baffle, and pods. I only weight 145 without gear.

Will pull right to 9500rpm on stock tach no problem in 4th/5th, verified stock gearing(15/33) and 130/90/18 tire.

Bike would not even pull past 6K with 115 mains before. Bigger jets fixed that.

Does this sound like a stock motor bike?

This is my first KZ and it feels like a rocketship compared to my previous bike(82 Yamaha Vision 550), so I really have nothing to compare it to.

Let me know what you all think.

it sounds like it might have a bit of a cam one question for you tho why did you buy the tach that only goes to to 10,000 rpm both my street and drag bike regularly get run past 10,000 in fact the little drag bike shift rpm is 10,000 and my big motor is set to shift at 10,500. just curious that's all you will see those kinds of rpm if you are racing. yes depending on cam's you may need to get the idle up that high. it does sound like you have more than stock cams you can't go by compression numbers to look for after market cam's or pistons ,that changes alot with cam timing changes.

remember those roller bearings convert from rollers to sliders once you get to the neighborhood of 10,000 rpms,yet another reason to build more lowend/midrange into your motors.

I had the tach already. I thought you weren't supposed to shift these bikes much over 10K rpm? Something about roller cranks or something?

I figured my shift points would be around 8500 or so since I thought the motor was mostly stock and had stock carbs, but it really does seem to want to keep pulling past that.

That's where I set the light for now at least.

What's done to your streetbike that you shift at 10,000?


Like I said, I'm learning about these bikes as I go...I'm soaking up the info on this site like a sponge.

My friend has a 95 CBR900RR and he's awfully cocky. I know I probably have a way to go, but I don't want his head to get so big he has to buy another helmet or anything.

as long as your spending majority of your time on the street just keep doing whatyour doing,just remember low/midrange.on the big inch pig motors i like to build im usually scared to death by the time they hit 8 grand since theyre trying to twist the bars out of your hands and toss you like a mad bull !

i have a high end rev limiter in my street bike that is set to 11,000 rpm the street engine is a 1075 with a ported head big valves and a set of .395 web cams and 29 smoothies. it rocks it actually makes more horsepower and tourque than my little drag bike does not buy much mind but it does make more. it is a stout little motor. i have gone 10.79 at 123 and change with it geared to the moon 14 41 gears.

Wow that tach look's killer on there. The whole bike looks good.

Thanks oldkaws...I need a sidewinder like yours for the look I'm going for, but I really like the pipe I already have too. Life threatening decisions, lol.

I uncovered it again today, as it looks like the rain has stopped for a couple days and I want to ride to work tomorrow.

Since I had to fix a blown fuse and find the short too, I couldn't just stop there!

I decided to shorten up the front turn signal stalks, as they have been annoying me for quite some time.

On the chopping block


If it ain't broke...then I haven't touched it yet!


On the CNC machine


Finished product


Much better


Unfortunately I was in a rush to clean up and forgot to take a final picture when it was all done. I'm sure I'll get one at some point.

Passed inspection, no more temporary tag for me!

Beautiful day too.

I immediately went home and took the baffle back out. It's like riding a totally different bike.

She won't even rev cleanly past 6K rpm with the baffle in, I packed 'er up tight! Was real quiet though, kinda like riding a vacuum cleaner.

good to hear ya passed inspection, it got up to 85 degrees here today so i took out my 400 to go cruising around on. I lucked out on the pipe i got it on ebay for a buy me know price of 120, and 20 bucks to ship it, it was in good condition with no rust, 3 outa 4 of the head pipes were blued.....and now that i started it all 4 of them are a deep blue almost purple color.....lol, the only flaw in it the guy put a balongia cut in the back, but i ordered a vance and hines compatition baffle for it.....hopefully it fits......i love the open header sound, but i dont think the local police will like it...