Raised main oil hole fix

[blownzoom440]

I have a bearing problem caused by a raised oil hole in the main saddle on all 5 mains on a chrysler 440 Koleno iron block that has not been line bored after roush delivered.I want to just sand the raised spot down using emery cloth and a bearing half cut in half so I only sand the raised spot.I could have it line honed but want to see if this can be done.The bearing shows black 3/4" on each side of the oil hole and a tel spot on the back of the bearing at the oil hole.

[blownzoom440]

The cap half of the bearing is fine and I am removing the crank to check the other mains.I put the engine together tight being in a hurry and it was my fault so I rolled out with trouble the top half and it showed my problem.The engine was run in the past but with more clearance and another crank so the bearing had marks but I just kept swapping bearings instead of fixing it.

[cjperformance]

Man, time, gasket set and bearings,, just get it line honed. Do it right the first time.

[blownzoom440]

Thank you and yes that would be the easy way.I would still like to know if this can be done,how though.

[blownzoom440]

The other bearings have some heat off to the side[1,3,5]] not over the hole so I think things are ok for them with the cap side looking ok.The oil hole may not be a problem just a tight crank,bearing.

[Zmechanic]

You could probably do it by using Prussian blue (or similar dye) on the backs of the bearing and hand scraping the marked high spots on the saddle like is done on lathes, mills, and other tools/tooling.

Is it it worth it to find out the hard way if it worked. Prolly not.

[cjperformance]

[quote="blownzoom440"]The other bearings have some heat off to the side[1,3,5]] not over the hole so I think things are ok for them with the cap side looking ok.The oil hole may not be a problem just a tight crank,bearing.[/quote]

BUT is this a cause of the oil hole issue you describe OR showing a main tunnel misalignment ??
Yes an issue with a raise around a drilling for an oil hole sould be scraped, sanded etc but were talking a decent engine here. Just linehone it !

[blownzoom440]

Thanks for your input I do appreciate it.On an align hone how much can be honed without redoing the caps to close the gap again?On the bore if the tolerances are tight and the crank is big with a total gap of lets say .002 to .0025 can you align hone to get .0035 or .004?I don't think anyone polishes a crank to get more room.The problem with the #1 bearing was just that 1 but the others are tight with some heat in the block side of the bearings but not real bad so I need more room.
Thanks for the help!!

[ec1]

You really need to get this to someone who is good with a line hone so they can inspect and tell you what it will need, they may be able to touch it up and make it come in, but if the caps took any heat and shrank inwards, then that cap will need to be spread and may need to cut the others caps anyways. If you want to drive to Flint, MI I will be working all weekend LOL and just do it for you while you wait. But there's got to be someone near you who can handle this.
'

[blownzoom440]

There are several shops and I called 1 to take it there next wk and hope they didn't drink too much over the holiday.They want 225$ and may not have to wait long but I want it right is the main thing.

[blownzoom440]

The heat in the bearing hardly got to the back of it on any of them so I think the caps will be ok.I think I only need .001 to .0015 more room.A rough measure of the crank gave 2.748 and the main bore is suppose to be 2.750 and I think some are tight by .0005 or so.

[PackardV8]

The heat in the bearing hardly got to the back of it on any of them so I think the caps will be ok.I think I only need .001 to .0015 more room.A rough measure of the crank gave 2.748 and the main bore is suppose to be 2.750 and I think some are tight by .0005 or so.

Have you verified the crank is straight between centers and/or on V-blocks?

[blownzoom440]

I am taking the crank in with the engine so it will get checked out.