timing marks

lloydie · Post by **lloydie** » Mon Apr 25, 2011 6:47 pm

i started to do the clearances today and if it wasn't confusing enough the timing marks on the fly wheel are way out as if someone put the fly wheel on wrong the bike ride good and strong with no rattles heres two vids to show you what i mean .
the flat head screw driver is where it should be and the philips is where it is on the flywheel this is what leed me to think it was put on wrong what do you guys think ?
front
http://s550.photobucket.com/albums/ii40 ... 5-1749.mp4
rear
http://s550.photobucket.com/albums/ii40 ... 5-1748.mp4

benny hedges · Post by **benny hedges** » Mon Apr 25, 2011 6:54 pm

you cant put the flywheel on wrong mate, unless it's off a different bike!
look at the cct guide to see where the marks should be in relation to the cams.

to do the clearances you will find it easier to have the lobes pointing upwards.

tony.mon · Post by **tony.mon** » Mon Apr 25, 2011 7:05 pm

Something wrong there.....
The flywheel can't be wrong; it's keyed onto the crankshaft and cannot be fitted in any other place.

There are four marks on the flywheel, FT- front top dead centre, RT- rear top dead centre, and two F marks, which you can ignore, as these are marks which line up under full advance when the engine is being timed using a strobe.

You can see these best when the alternator cover is in place, through the smaller window.

Turn the engine anticlockwise until the RT mark lines up, then check the lobes on the rear cylinder by removing the cam cover.
If they're facing upwards and leaning towards each other it's the correct TDC, otherwise rotate the engine one complete turn at the crank, and check again.

Just follow the instructions.

I have a feeling that you're mistaking FT with one of the F marks....

lloydie · Post by **lloydie** » Mon Apr 25, 2011 7:18 pm

when the lobes are in the correct place there is no marks on the wheel though the window .
and when the ft or the rt are lined up the lobes are way out im so

how is this bike even running and its running good at 104bhp

tony.mon · Post by **tony.mon** » Mon Apr 25, 2011 7:20 pm

Ok, you can check by carefully posting a long screwdriver down the plug hole and turning the engine over carefully to see where TDC is.
Then see if that lines up with the flywheel markings or the cam lobes.

lloydie · Post by **lloydie** » Mon Apr 25, 2011 7:33 pm

yep rear pistion at tdc lobes facing up/in with no timing mark though hole

fly wheel number is gp9420 7b08 if that helps

lloydie · Post by **lloydie** » Mon Apr 25, 2011 8:37 pm

on the pluss side the clearances are good

thanks for your help guys

tony.mon · Post by **tony.mon** » Mon Apr 25, 2011 10:09 pm

Wonder if the key's missing from the flywheel?
It could have moved round a bit.....

apart from that, it's not a standard flywheel.

that's all I can think of.

benny hedges · Post by **benny hedges** » Mon Apr 25, 2011 10:22 pm

you can get stand off keys made... usually on 2 strokes to modify the ignition timing.
i cant see why this wouldve been done on a storm as the flywheel is just a weight and the genny rotor..
just out of curiosity... has it been crashed on the left side?
does the timing cover look newer than the rest?
as i said somewhere else, the rotors (flywheels) are quite fragile and can distort easily with a knock.
im wondering if one has been fitted off a different bike as a replacement...

or maybe it's lighter than the standard vtr flywheel (it weighs 8lb!)
there is no way it's been timed up with that flywheel on if what you are saying is right.... either it's been timed up before it was fitted or it was done with a screwy or dial gauge as tony suggested.
or maybe they have forgotten to fit the key in its slot... or it couldve sheared... seen that before on massive motors.

odd one that. can you take it off and weigh it?

Post by **sirch345** » Mon Apr 25, 2011 10:59 pm

That is weird

Is it possible I wonder for the flywheel to be removed from the center boss and re-fitted in a different position, throwing out the timing marks

Only an idea,

Chris.

benny hedges · Post by **benny hedges** » Mon Apr 25, 2011 11:01 pm

yeh but what for!!! all it does is make leccy, its not like an old 2 stroke where it has the points behind it and the ignition cam inside the flywheel.
i think they lost the key.

AMCQ46 · Post by **AMCQ46** » Mon Apr 25, 2011 11:11 pm

yes I agree it sound like the key has sheared as the bolt not tightned properly, or the key has been left out!

lloydie · Post by **lloydie** » Tue Apr 26, 2011 5:50 am

i only have a simple tool box with a simple owner how would i go about removing the big ass centre nut ?
ive found no evidence of it been down on the left but it had been down on the right.
thanks again guys

benny hedges · Post by **benny hedges** » Tue Apr 26, 2011 6:32 am

if you only have basic kit just put a socket over the end and keep tapping the bar to the left.... it will go eventually.
might take a while like but it will go. it is a normal right hand thread btw.
but you do need a tool to get the flywheel off.
you need a m22 x 1.5mm extractor.
there are some on ebay... or theres a number of other options that fit, have a search here for the lightened flywheel thread.

there is no other way of getting it off other than using some sort of extractor.

oldbikeman · Post by **oldbikeman** » Mon May 02, 2011 8:46 pm

Has somebody timed each cam set on the wrong stroke,it would still run?
No can't be that either,must be broke.

VTR1000.ORG

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