You wouldn't believe me if I told you...

[Hilux]

Well....


I found out why I was leaking oil at the timing cover so bad. After a 2 day timing cover pull and 10 minutes of it running and it wasn't fixed, I pulled the motor today.

If I hadn't of thrown my phone I'd show you a pic.

The timing cover had a wrong size bolt in it. I found this out while re-installing the cover. So I put the right one in it and it fought with me the whole time until I made a tap to re-chase the threads. I could not see what was causing the leak previously b/c of all the sh.. Mr.T put in the way.

It was leaking BAD from somewhere at the top around the top 14mm timing cover bolt. The one on the D side that holds the adjuster for the alt. The cover had...get this, evidently been torqued just right and it crushed the tapped hole for the top 14mm bolt.

The iron is minorly mushroomed b/c the timing cover I guess had compressed it and it had such a short bolt...







Great way to find out...

Timing cover 1

Block 0


I believe the block in now bad

 

[pappy]

Helicoil.

 

[Hilux]

it's not stripped. The surface is split and mushroomed....weird...


it's like if you took a sledge and hit the hole just under the deck where the 14mm bolt goes

 

[KLF]

I read thru all that 3 times, and I STILL can't figure out WTF the problem is.

 

[2ndGenToyotaFan]

A helicoil would fix the problem... I'd just smack the mushroom back down with a steel block, run a tap down it, and get the right length bolt. No need by far, to ditch the block.

 

[WristPin]

do they make a vat big enuff thats full of FIPK that you could just dip your entire engine in?

 

[2ndGenToyotaFan]

That's what I need.......Get it all together and dip it!

 

[liljlandon]

So someone used the wrong size bolt, you put the right one in, and the block shrumed' itself? Or was it shrumed' cause of the wrong size bolt?

 

[Hilux]

here's what I think happened.


The top 14mm was too short. I think it went in about 2-3 or 4 threads. Then, as it was being torqued, it pulled those threads apart from the block and crushed then against the timing cover. What broke off the block is about as wide as a quarter or two.

it is weird and I'll try to get pics,

Regardless, it's causing a place where the TC will not fully seal. It prolly damaged the TC but IDK for sure. It's not tore down right now, and might not ever be. I've now got to jury rig a motor to go in it.

I've got about 5 R/Es and the one other 22R that I have, came out of it has a shot crank.



fun times...

 

[2ndGenToyotaFan]

Ah ha, so it's broke good huh? I'd still weld that hole in where it's no sealing, but I feel you on the engine trouble, that's for sure!

 

[Hilux]

FUBAR

Red: Cracked and completely broke off

Black: Bulged out. Like a sleeve or liner being pulled out.




.This is the best internet pic I could find. Not mine...The bolt that was in it, and I assumed long enough was like a reverse press that tried to pull the threads out.

 

[Hilux]

Well....it's either fix this somehow, or rebuild another block...which I don't have the time and money for...


I've got it tore down. With the iron totally broke off and in the shape it's in, could it be possible to just put some black oil resistant RTV on it instead of gaskets and re-install? It's got a nice surface, but how will it react to torquing? If I torque it, what's to keep it from slowly forming around the broke area?



I can't figure out how, unless it was coming through the HG, and why the oil was getting out like it was.

Just prior to me installing the particle type(flake?) HG, I did spray it off with break parts cleaner and did remove some type of layer that was made into the gasket. Could it be flowing from between the particle layers of the HG?


Timing Cover: It does have an area for the gasket to go, but around where the bolt for the TC goes in is fawked...

 

[Hilux]

sorry, these were the best pics I could take.


I don't know if my problem can be seen good. I reckon it's toast...

My 20/22R Hybrid motor hinged on this block. Pretty much as soon as I got it in, it had to come out. It just would not hold oil. I tried to grind it off and put a washer there but that didn't work either.

Just wont hold oil.

 

[cruiser88]

Hilux is that a crack on that ear?

 

[Hilux]

If you're looking at the above view, no. That's FIPG.

If you're looking at it from the side, that's how much broke off the block. About 2 or 3mm.

 

[cruiser88]

80 grit sandpaper.....clean real good.

Buy some Harris 15 and the flux.

Buy some Mapp gas not propane.


Fill slowly with the silver solder...worth a shot. I really cannot see what is broke other than a crack in the first picture on that ear. Harris 15 is buildable and strong as hell.

 

[Hilux]

88. What you see in the pic is not a crack. It is a ridge. I put a bolt that was too short in it and instead of the bolt stripping as I torqued it, it broke the iron that was from the threads of the block back to the timing cover.

Now there is a difference in surfaces. What broke off was about the width and size of a nickle. Somehow I have to get the surface back-up before the TC will seal properly again.


But I really think it's just skrap metal now. Great running block, and all that work I did to make the Hybrid work, gone...sucks b/c of that little break.


slightly different pic.

 

[cruiser88]

I was focusing on the 1st picture

 

[Isotel]

I was focusing on the 1st picture

Great Place to Store your Bolts


Those Timing Covers Suck, 30 Bolts Each a different size and length

 

["N8"]

Only solution my little brain can think of is to take a die grinder and a file to your block and square off that broken piece so that the missing part is uniform all around. Then measure the depth with a set of calipers and make a d shaped washer out of some flat stock steel. make sure the seems are tight as a nuns cunny, and fipg the hell out of it when it goes back together.