Shim Guide for Tuono and RSV(R)

[zlionakis]

Hi to all,

I have recently completed a valve clearance check and adjusting for my bike and was so pissed off to have all these papers and calculations to deal with (records and calculations) in order to find the appropriate shims.

Thus I decided to designa spreadsheet to easily note/calculate the clearances and shim sizes needed for my motor.

Moreover, because in some shops you cannot get hold of the shims that you actually need I have implemented a way of calculating the next possible shim for your bike.


You can download it from my link below

Any feedback to improve the current sheet is appreciated.

Hope you enjoy!

Zac

[kzmille]

If you can get hold of a Suzuki TL1000R shop manual have a look at it. It has a wonderful chart that does exactly what you want. Doubt the numbers will work for the Rotax but you can see a good way to set it up.

[Gone_Ape]

Nice, very nice......this I can use (and very soon)...Thank you !!

[zlionakis]

If you can get hold of a Suzuki TL1000R shop manual have a look at it. It has a wonderful chart that does exactly what you want. Doubt the numbers will work for the Rotax but you can see a good way to set it up.

Did not have seen it until now, but after a web search I was able to download it.

Indeed it is a very handy diagram that uses a different resolution of measured tappet clearance for intake and exhaust sides.

Could be implemented with the aprilia shims but it needs a bit of work!!

[kzmille]

Post it up if you can.

[zlionakis]

Post it up if you can.

There you go,

the TL1000R intake




and exhaust

[kzmille]

Thanks. It will be interesting to see if it can be adapted to the Rotax.

[amauri]

I don't get it, what is the purpose of this chart?

I've been adjusting V990 valves for many years by simply measuring the clearance on each valve and writing those numbers on a piece of paper.

I then compare the measured values to the desired values and determine how much thicker or thinner the new shim needs to be to achieve correct clearance (basic math, add or subtract).

At this point it is a simple a matter of removing the old shim, measuring it and substituting an appropriately thicker or thinner one (based on my simple math).

As you know, shims are available in .025mm increments (.001").
The shims are listed in the manual by order of p/n, not in order of size.

re-arranged by sizes:

0253974 - 2.300mm
0254030 - 2.325mm
0253975 - 2.350mm
0254031 - 2.375mm
0253976 - 2.400mm
0254032 - 2.425mm
0253977 - 2.450mm
0254033 - 2.475mm
0253978 - 2.500mm
0254034 - 2.525mm
0253979 - 2.550mm
0254035 - 2.575mm
0253980 - 2.600mm
0254036 - 2.625mm
0253981 - 2.650mm
0254037 - 2.675mm
0253982 - 2.700mm
0254038 - 2.725mm
0253983 - 2.750mm
0254039 - 2.775mm
0253984 - 2.800mm
0254040 - 2.825mm
0253985 - 2.850mm
0254041 - 2.875mm
0253986 - 2.900mm
0254042 - 2.925mm
0253987 - 2.950mm
0254043 - 2.975mm
0253988 - 3.000mm

[zlionakis]

I don't get it, what is the purpose of this chart?

I've been adjusting V990 valves for many years by simply measuring the clearance on each valve and writing those numbers on a piece of paper.

I then compare the measured values to the desired values and determine how much thicker or thinner the new shim needs to be to achieve correct clearance (basic math, add or subtract).

At this point it is a simple a matter of removing the old shim, measuring it and substituting an appropriately thicker or thinner one (based on my simple math).

As you know, shims are available in .025mm increments (.001").
The shims are listed in the manual by order of p/n, not in order of size.

re-arranged by sizes:

0253974 - 2.300mm
0254030 - 2.325mm
0253975 - 2.350mm
0254031 - 2.375mm
0253976 - 2.400mm
0254032 - 2.425mm
0253977 - 2.450mm
0254033 - 2.475mm
0253978 - 2.500mm
0254034 - 2.525mm
0253979 - 2.550mm
0254035 - 2.575mm
0253980 - 2.600mm
0254036 - 2.625mm
0253981 - 2.650mm
0254037 - 2.675mm
0253982 - 2.700mm
0254038 - 2.725mm
0253983 - 2.750mm
0254039 - 2.775mm
0253984 - 2.800mm
0254040 - 2.825mm
0253985 - 2.850mm
0254041 - 2.875mm
0253986 - 2.900mm
0254042 - 2.925mm
0253987 - 2.950mm
0254043 - 2.975mm
0253988 - 3.000mm

Firstly the aim of this spreadsheet is to help the user to note the clearances and current bike shims easier by organizing the view layout and without the need for any papers..(ofcourse you can make a printout if you wish)

Then by using simple math formulas it calculates for you the shim that you need to place on any valve as long as you give the necessary info (i.e. current clearance and current shim size)

Finally the result has to be rounded by the user to the next 0,025 increment. I uploaded a V2 of the spreadsheet that does it for you!!!

And also it calculates the clearance that you will have with a different size shim at the bottom of every box....(simple maths as well!)

Though everything is simple, it takes some time to organize your thoughts and pen in order not to make any mistakes...My aim was to make things easier by using this sheet which in my opinion helps both taking down your notes and values and calculates the results for you automatically.

Moreover, it is very easy to have your bike's valve clearance history if you wish so you will now next time what shims are in your bike without taking apart your cams...(plus you can do that for a limitless number of bikes)

Finally, it is not compulsory for one to use this sheet....Everyone has his own way of doing things..If on the other hand one thinks that it is of good use , it is here already made for and free..

[amauri]

OK, fair enough.

Here is Aprilia's valve log sheet that has been out since 1998.

[zlionakis]

OK, fair enough.

Here is Aprilia's valve log sheet that has been out since 1998.

That is very nice, did not know they had something like this and did not have it in my hands...That is why I came up with the spreadsheet...

Only minus....it does not do the maths for you!!!

[amauri]

I do my own math, much quicker then a calculator or computer spreadsheet for such simple numbers.
Besides, in the real world of fumbling with oily shims, my oily fingers sometimes slip on the keyboard and I end up with the wrong numbers

[derbybrit1]

Thus I decided to designa spreadsheet to easily note/calculate the clearances and shim sizes needed for my motor.

Zac

I am using Excel 2003 SP3. The Red cell for 'New Shim Size' is not calculating. It has #NAME? or #NUM! in those cells, and does not calculate when I updated the Green cels with Measured Clearance and Measured Old Shim.

I can audit the formula, but since the sheet is locked I cannot widen the colum to see the whole formula. It looks like:

=MROUND((C7+C11-C9)

Is there a bracket missing? How about giving the unlock password so it can be fixed or enhanced?

Thanks.