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Main bearing and primary guides advice

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Bryanj:
I thought black was thickest then blue, if so brown would be even looser

Fleabie:
I could be wrong here but I think it goes brown, black then blue in terms of giving increasing mains clearance. I got this from looking at the shell tables on page 32 of the manual on Ash's link:

(https://www.dropbox.com/s/1n3w5433jkph228/350F%20400F%20_4%20Shop%20Manual.pdf?dl=0)

I think that if have (according to plastigauge) approximately a 0.08mm clearance at the moment with blue shells, if I went down to browns I could knock of 0.02mm bringing it down the clearance to 0.06mm. If that's right then perhaps I could go even further down and go for green main shells as this would bring the clearance down by 0.03mm from the blues to 0.05mm. Although a 0.05mm clearance is above ideal, its much well within the upper service limit of 0.08mm.

Would anyone agree/disagree? If I am going to do this, it might as well be as best as I can get it :-)

Bryanj:
I think you are reading it wrong, smallest journal with biggest case hole needs thickest shell(blue)

Fleabie:
Sorry, I am being a bit dim :)  Your are right, I was reading it wrong. The way you worded it makes perfect sense now. So yes, I guess it’s stick with the blues or get a new crank (as you advised earlier in this thread).

Thanks Bryan!

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