cam timing problems z1000

Cheers Patton,

This is the advancer on my engine, my old manual depicts another type, thanks for your help.

Mark

RonKZ650 wrote:

Use this mark for intake. If you turned the engine over using any other marks, might as well disassemble now as you have bent valves.

he rotated by hand and didnt mention any resistance...all is not lost....

Patton wrote:

Likely see the style advancer shown below when seeking to align the T mark with the permanent case mark, used to fix the crankshaft at Top Dead Center incident to assuring correct cam timing.

Good Luck!

[Click on image to enhance view]

this is all about the cams and the timing marks on the cam sprockets...read the manual and re-read it again...count the 28 4 times using a magic marker with a friend verifying at least twice and then put on top sprocket....DONE....

MAFED wrote:

Hi all,

As part of the ‘restoration’ of my 1977 Z1000, I have refurbished the cylinder head valves etc. After fitting the cams and timing chain I rotated the crank by hand and guess what the cam timing is out even though I have followed the instructions to the latter; both cam marks line up with the cylinder head and the 28th pin mark lines up correctly, but every time I turn the engine after approx 350 degrees number 1 inlet valve begins to open as number 1 piston is just coming up to TDC!!

The timing may be off, but there is some valve overlap. The manual on mine shows the inlet valve opens 30 degrees before TDC. The exhaust valve closes at 30 degrees after TDC, so there is a 60 degree overlap where they are both slightly open.

Hope that helps.

keith1 wrote:

Patton wrote:

Likely see the style advancer shown below when seeking to align the T mark with the permanent case mark, used to fix the crankshaft at Top Dead Center incident to assuring correct cam timing.

Good Luck!

[Click on image to enhance view]

this is all about the cams and the timing marks on the cam sprockets...read the manual and re-read it again...count the 28 4 times using a magic marker with a friend verifying at least twice and then put on top sprocket....DONE....

Right right right! Don't rely on what the cam lobes look like. Go by the marks and the pin.

keith1 wrote:

Patton wrote:

Likely see the style advancer shown below when seeking to align the T mark with the permanent case mark, used to fix the crankshaft at Top Dead Center incident to assuring correct cam timing.

Good Luck!

[Click on image to enhance view]

this is all about the cams and the timing marks on the cam sprockets...read the manual and re-read it again...count the 28 4 times using a magic marker with a friend verifying at least twice and then put on top sprocket....DONE....

this is all about the cams and the timing marks on the cam sprockets...read the manual and re-read it again...

Yes, as shown in the manual page posted by OMR regarding cam timing, which pictures the original advancer before it was changed in January 1974.

As provided in the manual, the crankshaft is first rotated to TDC (Top Dead Center) by aligning T mark on the advancer. The advancer's T mark is important when dealing with cam timing. The other marks on the advancer may be ignored incident to cam timing.

The original advancer with 5 degress BTDC (Before Top Dead Center) was modified in Jan 1974 to 20 degrees BTDC.

The 1977 KZ1000 in question has the 20 degree advancer.

The mark circled in green on the point cam rotor was added later to help orient the rotor and avoid reassembling it 180 degrees off.

Good Luck!

[Click on image to enhance view]

"Don't rely on what the cam lobes look like. "...

I'm not so sure this would be a correct statement regardless of what advancer you have installed in your engine...

Even with the later model I have in my engine, the lobe tips will be aimed at each other and should end up at head decking as depicted in the corrected image, right hand side.

I also have performance cams (105 lobe centers) and adjustable sprockets and the cam lobe tips still are at head deck....

Other wise, your valve timing opening & closings would be off...

No matter, seems he as OEM cams and sprockets so outside of which advancer, just follow the manual for TDC (T) and cam sprocket marks to head decking, one pin up and 28 pins over you should be good to go....

OMR

it seems like Mafed and I have the same problem.

the question I have is this: for the timing mark, do I line up the mark centered on the T or do I line it up with the mark just to the right of the T?

IowaKZ wrote:

it seems like Mafed and I have the same problem.

the question I have is this: for the timing mark, do I line up the mark centered on the T or do I line it up with the mark just to the right of the T?

On the later model advancer, T mark is the | centered on the T.

Immediately to the T's right is the numeral 1 ("one" as in "uno").

See image below.

Good Luck!

[Click on image to enhance view]

ok, I found out 2 things:

1. I was using the T instead of the small mark to the right of the T (the mark to the right is indicated in my book)

2. I was using the wrong chain pin to start my 28 count. I started with the pin on the exhaust mark so I only ended up with 27 links.

So I got it all set right, started it up and it ran, but very very rough. Doesn't sound even remotely right.

Question 1: how much damage did I do by having it off set by 1 pin.
Question 2: even though the book says the mark after the T, could the fire be on the T? My advancer does not look like either in the picture below. It has a T, then a mark, then the F and another mark.

Here's the photo in KHI's official KZ1000 Motorcycle Service Manual covering 1977~1979.

The T mark is the | centered on the T. That's a | and not a 1 .

I enhanced the photo for clarity.

Perhaps the advancer was again modified after 1979.

Good Luck!