Balance shaft delete

Hello, first time posting on the tacoma site, I have a 1999 Toyota tacoma with 3rz turbo engine, I was recently doing the balance shaft delete and drilled too far into my block for the grub screw to block off the oil package, So now my oil and coolant mix since I broke through into the coolant jacket, Yes I messed up I know, I was rushing and realized I should've taken my time. Are there anyways I can fix what I've done? I thought about tapping the hole and putting in a fully threaded bolt with some jb weld on the threads? to seal the coolant out of the oil passages... Thanks

 

@boostedka

 

@MrCrowntown
@05Taco4x4
Have any ideas?

 

I agree, drill, tap, bolt with jb weld, cut the head off and mushroom whats visible.

 

I like the long bolt idea through both passages. One caveat that I cannot resolve without a block in front of me, is whether the oil galley that supplies the oil to the tensioner that you were attempting to block off, feeds anything else beyond where the bolt will be. Once its in there, i am sure it will impeade flow of oil beyond that point. If you can verify that the speciffic galley does not supply any other bearings, then I would go ahead with your thought!

 

The rest of that oil passage, goes to the head for the valve train it looks like to me, bacause if I shine a flash light into it, the hole going up through the head gasket has light coming from it.

 

That's kind of what I was thinking was going to be the case..

Now, I think you could do your long bolt with jb weld, and then drill down the oil passage from the top through the bolt. Does that make sense?

You will need to clean the oil passages really well after this process though, but at this point you have already contaminated that galley.

 

I put in the bolt and may just leave it, the oil passage runs into a circle right there and meets the bolt and looked like there was room for oil to go around the bolt

 

Does anyone have a diagram of the oil passages in the 3rz? does the idiot light sensor go in the passage on the oils way to the head after the balance shafts?

 

I’d probably go with the bolt, but I’m not sure about the jb weld. I’d use locktite flange sealant, but if you go that route, don’t forget the primer. All locktite products are basically junk if you don’t use the primer first. The directions are on the bottle of all the products. You’ll need to work pretty fast before everything hardens, but after it’s cured you’ll need a bolt of lightning to remove the bolt again.

 

Not sure which flange sealant you mean. If it is the silicone red gasket goop that is a absolute no. Any that comes off when the bolt goes in the hole can plug oil holes and starve a bearing of oil.

https://www.henkel-adhesives.com/us/en/product/thread-sealants/loctite_545.html

545 is my choice. Seals well and won’t clog anything if it circulates.

 

I can’t remember what the numbers are on the bottle, but that 545 would probably do the job great! That’s basically what I was talking about, but instead of thread sealant, it says flange sealant.

 

If was me, I’d:
-Thread both
-Brake clean the hell out of it
-Plenty of dry time
-Apply epoxy through the first to the second set of threads (toothpick?) and install it’s own set screw
-Dry time
Continue install as if it never happened

 

Complex, but the correct solution short of a new block. I like it

 

Can someone explain to me why you can't just take the chain off the balancers and call it good? why is all of this work necessary and potentially causing a problem like this when everything works fine as it is and should continue to if you just remove the chain...? Is this just so you can increase oil pressure or...?