Could you check my reshim calculations?
FeelerOld shim (inch)Old shim (mm)New Shim (mm)L exhaust.009.095"2.4132.150
L intake.003.075"1.90499991.775
Thanks guys/gals.
I checked your calculations using Heckler's spreadsheet (see thread above) and came up with the following:
L exhaust, new shim = 2.36
L intake, new shim = 1.85
I double checked  but you should do it yourself and then remeasure after you've put it all back together, just to be sure.
L exhaust, new shim = 2.36
That sounds much better (not saying it's correct), but if the shim change drops from a 2.413 to a 2.15, that's a 0.263 drop.... anything at or more than .2 lower than factory it's time to consider a valve job.
I just put in his calulation (in the spreadsheet) and for the exhaust it looks like he went to the closet one up rather than down if he goes down then he would have 2.125.
The only way I got 2.36 is by placing in "2.63" for the old shim in mm. Which gave me 2.359.
I have not heard the .263 drop means revalve time...where did you see that? Its an interesting peice of info...Thanks
The intake looks correct.
I have not heard the .263 drop means revalve time...where did you see that? Its an interesting peice of info...ThanksQUOTE]A .263 change in the valve stem length is a huge change and probably indicates imminent failure. By my calculations (using the spreadsheet) to get a .263 change in shim size would take more than a .008 change in the valve stem length  which is roughly equivalent to going from .010 to .002 on an exhaust valve  a sure sign of trouble.
I doubled checked my calculations again  I'm still showing 2.36 for the new exhaust shim (this is a relatively small change in shim size  which you would expect given that the exhaust valve is only nominal off of spec  .010).
FeelerOld shim (inch)Old shim (mm)New Shim (mm)L exhaust.009.095"2.4132.150
L intake.003.075"1.90499991.775
Thanks guys/gals.
I don't know where you got your exhaust shim size from but there isn't any 2.413
Was it 2.40 or 2.425?
As far as the intake you would need a 1.85
the way I got the same 2.413 was when i coverted .095" to mm when i checked his calculations. I am pretty sure that he does not mean that was what was written on the old shim.
the way I got the same answers as him when i looked at this (using the spreadsheet) was by tossing in the feeler number into the first cell in "Measured Clearence:" then in the second cell I placed in the "Old shim (mm)" into "Measured Old Shim:" which does result in the numbers he posted.
And for the final (new shim) I think he looked for the closest number (up or down) to what he got in "New Shim Size:"
not saying this is correct but i am pretty sure that is how he came to his results.
*Just read my PM's and he mentioned that he replaced a camshaft with (not sure what hotcams or R model or some other brand) he also mentioned that the valves were perfect prior to the cam install and after before 'breakin'....just some more FYI
Did you convert your feeler measurement to mm using the center box in the spreadsheet?
The number printed on the shim should be reliable  unless your shim has worn a lot, but then you (probably) wouldn't be able to read the number anyway.
The cam shouldn't matter.
.0955" would be a 2.425mm shim. So, you would need a 2.375 shim.
I use the actual Honda shim sizes and count up or down whichever way I need to go. Each shim size is .001"
This is for the 450 so the part #'s are different but the sizes are the same.
14901MBB000 .0472in 1.20mm14902MBB000 .0482in 1.225mm
14903MBB000 .0492in 1.25mm
14904MBB000 .0502in 1.275mm
14905MBB000 .0512in 1.30mm
14906MBB000 .0522in 1.325mm
14907MBB000 .0531in 1.35mm
14908MBB000 .0541in 1.375mm
14909MBB000 .0551in 1.40mm
14910MBB000 .0561in 1.425mm
14911MBB000 .0571in 1.45mm
14912MBB000 .0581in 1.475mm
14913MBB000 .0591in 1.50mm
14914MBB000 .0600in 1.525mm
14915MBB000 .0610in 1.55mm
14916MBB000 .0620in 1.575mm
14917MBB000 .0630in 1.60mm
14918MBB000 .0640in 1.625mm
14919MBB000 .0650in 1.65mm
14920MBB000 .0659in 1.675mm
14921MBB000 .0669in 1.70mm
14922MBB000 .0679in 1.725mm
14923MBB000 .0689in 1.75mm
14924MBB000 .0699in 1.775mm
14925MBB000 .0709in 1.80mm
14926MBB000 .0719in 1.825mm
14927MBB000 .0728in 1.85mm
14928MBB000 .0738in 1.875mm
14929MBB000 .0748in 1.90mm
14930MBB000 .0758in 1.925mm
14931MBB000 .0768in 1.95mm
14932MBB000 .0778in 1.975mm
14933MBB000 .0787in 2.00mm
14934MBB000 .0797in 2.025mm
14935MBB000 .0807in 2.05mm
14936MBB000 .0817in 2.075mm
14937MBB000 .0827in 2.10mm
14938MBB000 .0837in 2.125mm
14939MBB000 .0846in 2.15mm
14940MBB000 .0856in 2.175mm
14941MBB000 .0866in 2.20mm
14942MBB000 .0876in 2.225mm
14943MBB000 .0886in 2.25mm
14944MBB000 .0896in 2.275mm
14945MBB000 .0906in 2.30mm
14946MBB000 .0915in 2.325mm
14947MBB000 .0925in 2.35mm
14948MBB000 .0935in 2.375mm
14949MBB000 .0945in 2.40mm
14950MBB000 .0955in 2.425mm
14951MBB000 .0965in 2.45mm
14952MEB000 .0974in 2.475mm
14953MEB000 .0984in 2.50mm
14954MEB000 .0994in 2.525mm
14955MEB000 .1004in 2.55mm
14956MEB000 .1014in 2.575mm
14957MEB000 .1024in 2.60mm
14958MEB000 .1033in 2.625mm
14959MEB000 .1043in 2.65mm
14960MEB000 .1053in 2.675mm
14961MEB000 .1063in 2.70mm
14962MEB000 .1073in 2.725mm
14963MEB000 .1083in 2.75mm
14964MEB000 .1093in 2.775mm
14965MEB000 .1102in 2.80mm
14966MEB000 .1112in 2.825mm
14967MEB000 .1122in 2.85mm
14968MEB000 .1132in 2.875mm
14969MEB000 .1142in 2.90mm
14970MEB000 .1152in 2.925mm
14971MEB000 .1161in 2.95mm
14972MEB000 .1171in 2.975mm
14973MEB000 .1181in 3.00mm
These are all the valve shims available for the CRF. The shims are marked in mm but they are rounded to three digits: 1.825mm is acutally 182 on the shim and 1.875mm would be marked 188. As far as the measurements in inches, I carried them out four places. If I would have rounded them, you end up with two different shims with the same english measurement. Must be the shift between the two standards I guess. RR.
Did you convert your feeler measurement to mm using the center box in the spreadsheet?
I dont think feelers come in inches but i do know mine are "mm" maybe his are inch...dunno
.009 needs to be converted to .2286 before entering it in the spreadsheet to produce meaningful results  IMO
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FeelerOld shim (inch)Old shim (mm)New Shim (mm)
L exhaust.009.095"2.4132.150
L intake.003.075"1.90499991.775
Thanks guys/gals.