[Fot] Rear Main Cap

[ralph hansen]

 no, lack of line bore would not make the misalignment of the notches - line honing is a bit different than a line bore - block and caps get line bored when made, it makes sure all caps and block saddles are in perfect alignment with each other / changing s cap requires a line bore to get them in alignment with each other / the offset notches will not be corrected by line bore, they were obviously made at different setting when new 
    On Saturday, March 18, 2023 at 02:43:22 PM CDT, Rod Pierce via Fot <fot at autox.team.net> wrote:  
 
 So are you saying the lack of line honing would cause the bearing offset? 
 Supposedly this block was line honed.
On Sat, Mar 18, 2023, 2:10 PM Scott Janzen via Fot <fot at autox.team.net> wrote:

One of the mysteries of a big batch of GT6 parts and cars i picked up some years ago was a box of 50+(!) main caps, which i still have.Also got two blocks (with no caps), but why would anyone separate all these?  Nothing to do but laugh when i discovered them.Box makes a nice heavy doorstop.

Sent from my iPhone

On Mar 18, 2023, at 6:27 PM, ralph hansen via Fot <fot at autox.team.net> wrote:



 main caps are machined as a set to the block itself - if you need to replace a cap, good luck finding a cap with the grooves lining up / if you do get lucky you'll need to get the block and caps line bored to make it all work properly

    On Saturday, March 18, 2023 at 08:26:23 AM CDT, Rod Pierce via Fot <fot at autox.team.net> wrote:  
 
 The image shows the rear main cap and bearing on a small journal 1300.
As you can see, there is an offset between the two bearing halves. 
I was attempting to mix and match parts from my parts bin.
I'm curious about the source of the offset.  Is there a difference in end caps from year to year on the 1300 or is there a difference from engine to engine when they were manufactured?_______________________________________________
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