Quote:
Originally Posted by bluemax_1 View Post
. . . The markings on the crank correspond to the journal outer diameters and the block markings correspond to the main bearing block+cap inner bore diameters.
There are 4 possible crank colors in order - Yellow (0), None (I), White(II), Blue(III) with Yellow(0) having the thickest journals and Blue(III) having the thinnest (by fractions)
There are 3 possible block markings - I, II and III, with I having the smallest inner bore and III having the largest inner bore.
There are 5 bearing colors in order - Pink(I), Red(II), Green(III), Black(IV), Brown(V). Each bearing differs from the next by 0.0002". The proper clearance specs are between 0.0008"-.002". Pinks are the thinnest bearings and Browns are the thickest.
Since yours is a 2G (right?), you shouldn't have to worry about the 1G problem where there could be different sized main journals on the same crank. Supposedly, from 2G 4-bolt main onwards, the crank journals were the same range on the same crank (otherwise you have to find the individual roman numeral markings on the counterweights of the crank).
To find the correct bearing color, you need the crank number/color (or individual crank journal number) and the block number.
For instance, for my car.
No color (I) crank + block markings II, II, II, II
I know all the bearing colors will be the same and in this case, it's Green.
If the crank is a Yellow(0) crank with the same block markings of II all around, then the bearing color should be Red.
If for instance, you have a crappy crank and a crappy block, you could have a crank with counter weight markings like (I, II, I, III) and block markings like (II, I, I, II)
Then you would need
(I)crank + (II)block = Green
(II)crank + (I)block = Green
(I)crank + (I)block = Red
(III)crank + (II)block = Brown
BTW, if you have Mitsu CAPS, enter your VIN and then type 'bearing' in part name. Place the pointer over the part number (03040 if you're a '94) and hit F2 on your keyboard. It will pull up the diagrams that show the crank and bearings. On the top of the CAPS screen, you should see 2 big arrows. Click the right arrow once, and it shows the diagram that indicates where the block markings are. click the right arrow again and it'll take you to the bearings cross-reference page. You can then double-check what I've told you there and cross-reference what you need from your crank+block markings. If you still have trouble figuring it out, email me or call and speak to Dave at Norco Mitsubishi.
Now after looking at the diagrams, click the left arrow key to get back to the diagram that shows the crank + bearings. Place the cursor over the part number for the main bearings and left click to select. This then pops up the Mitsu part#-CAPS# cross-refernce chart. I can save you that step by simpling listing the bearing numbers.
Pink = MD197603
Red = MD197604
Green = MD197605
Black = MD197606
Brown = MD197607
If you do NOT know what you need, it seems clueless Mitsu employees believe MD197603 Pink(I) to be the 'default' and this is what they will send you. Since Pinks are the thinnest of the select fit bearings, you have a good chance of ending up with clearances that are too wide (over 0.002").
Max
