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Discussion Starter #1
will someone double check my findings before i order new bearings, thanks!

i just had the crank cleaned, mangafluxed and polished, here are the journal sizes:

Main journals
1 - 60.0000mm (2.3622")
2 - 59.9949mm (2.3620")
3 - 60.0000mm (2.3622")
4 - 60.0000mm (2.3622")
5 - 59.9923mm (2.3619")
6 - 59.9949mm (2.3620")
7 - 59.9923mm (2.3619")

Rod journals
1 - 51.9786mm (2.0464")
2 - 51.9812mm (2.0465")
3 - 51.9812mm (2.0465")
4 - 51.9735mm (2.0462")
5 - 51.9786mm (2.0464")
6 - 51.9786mm (2.0464")

going backwards through the TSRM i get that every bearing should be a #2 from Toyota, except for the one rod journal its like .0001" out of the range (but i'll just get a 2 for it since the journal diameters aren't listed for the #3+ bearings)

anyway, if someone that knows what they're doing could tell me if i'm on crack or not, thanks!
 

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Discussion Starter #2
ttt
 

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Discussion Starter #3
bump
 

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I think you may be reading the chart wrong. You need the diameter of all the bearing saddles in the block as well as the connecting rod big end diameters. You get the number from the chart for the crank journal diameter, then you get the number for the Block saddle diameter and add them together. This is the bearing number that you need. Hopefully this makes sense. Sorry if you knew this and I just misinterpreted your question.

I just finished doing this so if you need more info feel free to PM me.
 

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Discussion Starter #5
yea i thats the way u'r supposed to do it...i however went backwards through the chart, i don't like doing it toyotas way, the journal surfaces could have worn different making the toyota number (from the block/crank/rod stampings) different than what is actually needed.

did u plastigage the oil clearances? if so what were they?
 

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I haven't got it all assembled yet but I know what the clearance will be. I measured all the mains and rods on the crank, then I measured the bearing saddles in the block(after line hone) and the diameter of the rod big ends. The diameter of each crank journal corresponds to a number in the chart. Same with the Block saddles and the rod big ends. Then all you do is add the numbers and this will give you the correct bearing number.

For example:

My #1 crank journal was 2.3622" which corresponds to a #2 in the chart.
My #1 saddle in the block was 2.5209" which corresponds to a #2 in the chart.

So I need a #4 bearing. Just to check, the bearing thickness for a #4 listed in the chart is 0.0787". So the block diameter (2.5209) -the journal diameter (2.3622) - 2*bearing thickness(0.0787) gives 0.0013" of oil clearance. Standard if 0.0012-0.0019. So this is fine.

You should use this method as It gives the proper oil clearance every time. If you havent had you block align honed you should definitly be able to use the stamped numbers for the block saddles. You have the crank journal diameters so you are basically there.
 

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Discussion Starter #7
well that makes alot more sense now...the block is going to the machine shop either friday or monday to be tanked, decked, rehoned and align honed. so once i have the main cap ID's i'll be able to get this figured out.

thanks for the help man!
 
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