How to select the proper valve shims

[@SuperJimbell]

At last,a proper lesson in shim fractions..thank you.

[@kevincenteno5055]

you are definitely explaining it so much more easier than most ppl on here good job and thank you for helping me understand valve shims so much more now i can go check my 4 stroke polaris outlaw and hopefully finaly get it started !!

[@davidschoenoff4262]

thank you Matt , this is great , as Iam dealing with a 2003 f850 gs with crazy low clearance almost no clearance on my exhaust so ima going to use tat equation to bring the clearance back to a proper clearance ,

[@Trapt4life]

I,v been a Diesel Mac for years, but never really knew how to properly calculate the correct shim size. Basically because I have never had to, until today. Thank you for this video.

[@andrewpeter6128]

@Matt; for the G310GS, it is my understanding the intake valve clearance specs are 0.11mm-0.20mm & the exhaust is 0.26mm-0.35mm. After speaking with some reputable mechanics, they recommended setting it at the "tighter" end of the range....such as 0.13mm & 0.28mm. The theory is it allows valves to open more, and they are confident the bikes run better. Thoughts?

[@carlberg6918]

proper & easy to follow . thanks for doing it in Going up in shim size and then down......

[@steelcitycaprice.899]

Simply awesome teaching...I absolutely get this equation with confidence 👍🏽🏁🏁🏁🏁

[@computerbytes537]

thank you sir you have really made my day i have a klx 250 and i was struggling with the clearance

[@shanemyers4142]

Well you explained it very clearly. I'm fixin to try and tackle it on my 2001 r1. Lol Kinda nervous 😓 this was the best teaching video out of all of the videos. Great work brother. I think I have enough confidence now!

[@juanelote]

How did you do?

[@mattcero1]

Great video with great cautions given throughout the video.

[@AmrinderSingh-zx9hr]

Very good Explained.! I want your advice regarding Shim adjustment of my bike. please tell me how I can contact you.

[@MarshallHewettMusic]

I had my bikes head resurfaced and installed brand new valves. Would I just measure new shims until I get the factory spec? Because i cant go off of the old measurements since everything is new now right?

[@SushiBaki]

hey, i got a shim now that is 2.675 and the clearance is around 0.18mm. I calculated that it needs a 2.705 but then i should get a 2.70 which is gonna be 0.005mm too loose. the standard intake clearance is 0.11-0.15mm

[@MattsMotoWoRX]

That should be fine

[@funshine3571]

My bmw g310gs came from the factory with too big of shims on the intake. This eventually flatened the cam lobes. How would i check to downsize my shim?

[@ItaliavsChile]

Explained easy no adverts or endorcement

[@michaelfirth1075]

Great video, thanks.fabulous at explaining.😊

[@robertt65250]

what an where did you measure to get the .18 measurement?i got the .13 is clearance you want an 2.25 is the old shim. same problem again where did you measure to get .06mm?

[@shanemyers4142]

I just got my r1 back together and all my valves are in spec now but it will not start and I have the timing correct and lined up. Could a timing chain to tight cause it to not start?

[@MattsMotoWoRX]

Double check everything. If it’s throwing a code 19 when your trying to start it your ignition switch needs to be cleaned

[@SushiBaki]

I got a new question. I just changed my exhaust valve from a 265 shim to a 258 shim because i measured 0,18mm and need 0,21-0,25mm. When i changed to the 258 i tried to get in a 0,28mm and had to force it in with some pressure and it worked but it felt to much pressure. I dont know if im gonna change it to a 260 or just have 258. I tried with the 0,25mm and it felt like it should

[@MattsMotoWoRX]

Looser is better than tighter when it comes to shim adjustments. It sounds like the adjustment is fine

[@grzesiekapacz]

Thanks! Good job!

[@shanemyers4142]

I just finished the a=b-c+d for my valves on the r1. I had some shims already. My manual calls for 0.11-0.20. Is it okay shoot for a clearance of 0.17? Jus wondering cause these shims I have make that clearance.

[@MattsMotoWoRX]

That will work

[@shanemyers4142]

Thanks I really appreciate your help. You explain things very clearly. You're awesome.

[@lilfargo776]

What’s the best way to start with shims if you put new valves in and the bike never had shims when you brought it disassembled?

[@MattsMotoWoRX]

If you have a pack of shims start in the middle and work from there

[@MADE-VIC]

Hi just wondering when doing the math taking the number from the manufacturer recommendation let’s say it’s from 0.17 to 0.22 would you just take like a 0.19 to do the math for the spec’d clearance?

[@MattsMotoWoRX]

Yes somewhere in between is good.

[@MADE-VIC]

@@MattsMotoWoRX awesome great video and thank you for clearing that up

[@bobert5785]

Thanks for asking this question...saved me from typing the same one!

[@MADE-VIC]

@@bobert5785 yeah I shimmed my dirt bike , pretty easy to do good luck

[@CoolnSerious]

Great video!!!! thank you

[@chucklynch2977]

Jim! Nice cameo!

[@iron4577]

What about if the valve is too tight

[@MattsMotoWoRX]

The math work for that also

[@earldaisgomez3959]

Dear sir. Very very useful

[@jackmitchell784]

Cheers, nice and simple explanation

[@Octavio516]

All my clearences are way off. They are all way too small of a clearance.

[@tharindudanushka1]

🎉🎉❤❤

[@marcomotovlog7681]

There's a guy at your back is annoying

[@jeremiah1412]

Great video! But let me just take a moment to say there was no need to put that in an algebraic equation. I think people like to convert things to algebra a little too often. I had a hard time understanding algebra in school. Because I couldn’t understand why you would assign an alpha to a numeric value. Once the light came on and I understood why. My first question was, this complicated, why not just do it in your head? Ladies and gentlemen, algebra was made for stupid people. I design every equation I need in real time.