What did I do?

[easymotorsports]

I have a 72 Plymouth Satellite Sebring that I am installing a 440\727 in.
The mtr was bored .040 over and crank was turned 10/10. The mtr has LY rods, new sixpak pistons, melling hv/hp oil pump (reburred and raduised), 1/2 in oil pick up tube, 6 qrt Hemi oil pan, compcams xe268 cam,lifters, pushrods and roller timing chain. 440source heads, Harland Sharp roller rockers, edelbrock performer rpm manifold and a 780cfm Quickfuel carb. Everything is brand new minus rods, block and crank. The assembly has been balanced and blueprinted.

Here is the question: imagine the empty block is on a stand, upside down, no crank or main caps, front of engine is at your belly.

See the hole on all the mains? Well I screwed up and drilled those out to around 1/4 between the mains and cam!!! Crap, I was trying to drill the hole between mains and lifters, which I did afterwards. This was done pre machine shop work, now it's all together and I am having a stroke.

What are the consiquence's for my stupidity?

 

[super-bee_ski]

Need a picture....

I'd say you need new "Main-caps"
Is that where you drilled

 

[easymotorsports]

This was done on the block.

 

[super-bee_ski]

Send pics

 

[khryslerkid]

I believe he drilled the oil passage, in the block, that goes between the main bearing and the cam bearing.

It's assembled so getting pics would be hard to do...

 

[super-bee_ski]

I geuss it could be considered a "weakened structure"?

 

[lewtot184]

i just went out in the garage and measured "the" hole in a block i have on the stand. so i think what you did is drill a 1/4" hole to 1/4",....? so what you probably did is enlarge the oil feed holes in the cam bearings rather than the block. look carefully at the cam bearing and see if there's a drilling burr at the oil feed hole. worst case just replace the bearings. that is if i understand all this,...lol.

 

[69Bee]

No issues. Holes (both to cam and lifters) should be opened up to at least the size of the hole at the main saddle. You will be fine, especially with the HV oil pump.

 

[khryslerkid]

i just went out in the garage and measured "the" hole in a block i have on the stand. so i think what you did is drill a 1/4" hole to 1/4",....? so what you probably did is enlarge the oil feed holes in the cam bearings rather than the block. look carefully at the cam bearing and see if there's a drilling burr at the oil feed hole. worst case just replace the bearings. that is if i understand all this,...lol.

I did the same. But the only bare block that I have is a 413. The hole in the journal is a bit over 1/4" and as it gets closer to the cam bearing it steps down to under 1/4". There's no cam bearings in my block. If he drilled the hole before installing the new cam bearings he should be good. If drilled after, through the new bearings, there could be a burr. He stated that this was done before machining.

Looks like he went to call 911, not on line at the moment...

 

[easymotorsports]

Ok, let me try to clear up my mess. The passage between the main bearings and the cam bearings is what I drilled out. If you take a flash light and look down in those holes, there is a 'step' . We're the hole gets smaller. That hole/passage is the part I drilled. The hole match's the bearing hole. Does any of this make since?

 

[khryslerkid]

We get what you did. The new cam bearings were installed after you drilled the holes?

If so you should be good...

 

[easymotorsports]

Yes, all was done before machine work and assembly.

I wish 911 would pick up

 

[lewtot184]

We get what you did. The new cam bearings were installed after you drilled the holes?

If so you should be good...

if this is the case i wouldn't worry about it.

 

[khryslerkid]

No issues. Holes (both to cam and lifters) should be opened up to at least the size of the hole at the main saddle. You will be fine, especially with the HV oil pump.

Your good! Go have an alcoholic beverage of your choice!

 

[383man]

I agree you should be fine. Even though you opened up the passage it still has the normal holes in the bearing shells at each end of the passage so as long as you did not drill the bearing holes you should be fine. Ron

 

[easymotorsports]

Thanks

I just wanted to say thanks to all those who helped to put my mind at rest.....