Topic: Decipher??

[bwaller]

Can anyone decipher this sketch? This was supplied by turboguzzi and is supposedly an engineer's hand sketch of valve angle changes for the CB500R cylinder head. The bottom two angles are identical @ 22.5 degrees, these are the angle changes from stock.

The top right is 28.5 degrees for intake which I agree with, however it's left of center (exhaust angle) that's not clear to me.

Can anyone decipher that number?

[bwaller]

I'll bump this up in case someone's vision is very clear this a.m. 

[MikeSimon]

Sorry, I have looked at it a few times and I cannot make it out. At first glance it looks like 23.5°, but the longer I look at it, it looks like 28.5°

[DaveBarbier]

I see 23.5. I've got young eyes, haha.

[bwaller]

You & your "young eyes".  I agree it looks like 23.5, but that's not what I find when checking angles. Must be me, I'll try a more accurate approach.

Thanks Mike & Dave.

[754]

Did you check with a protracter or angle finder ?

[bwaller]

Used a stem and bevel/protractor, simple tools. Thing is, between heads I always get the same 28.5d intake angle, just never 23.5 on the exhaust side.