No oil to the valves- 2F HELP

[John Staton]

not to beat a dead horse, but I guess I was looking for a yes or no....being an ignoramus when it comes to engines, it seems reasonable that this bolt hole would be an oil pathway since there is a hole drilled through it (oil galley) with a hump on the other side that appears to be a channel to the rocker arm. The guys in the video seem only slightly less befuddled than me

 

[NeverGiveUpYota]

Up above Spike posted a close up of the rocker arm, I was trying to find one of mine but my CPU is being a wench. In his you can see the holes in them which is where oil passes through to coat the upper system. Someone else can clarify for me if that one bold line is simplified for the photo I added or does oil come up through each dual base as seen under the rocker arm where the whole length is bolted down to the cylinder head?
But as seen in the video I added above... flipping the head gasket the wrong way is the primary reason oil is stopped from flowing to the upper most part of the block.

 

[NeverGiveUpYota]

If my CPU wasn't being a total doush I'd simply add photos from when I pulled my head, I am sure I could find photos of the gasket, ect. Seems pretty evident tho that your guy didn't just fix it by swapping out a thicker bolt for a thinner bolt. How long did he have it? Do you trust him? Could he simply have realized the gasket was on wrong and didn't want to tell you?

 

[NeverGiveUpYota]

Post #143 second pix down is an upclose of the rocker arm support and the hole that the oil comes up through. Thanks @beno.

What's a Parts Guy to Do??

 

[John Staton]

If my CPU wasn't being a total doush I'd simply add photos from when I pulled my head, I am sure I could find photos of the gasket, ect. Seems pretty evident tho that your guy didn't just fix it by swapping out a thicker bolt for a thinner bolt. How long did he have it? Do you trust him? Could he simply have realized the gasket was on wrong and didn't want to tell you?

He had never worked on the truck before I took it to him other than change my alternator. Known him for 15 years and when I took it to him and he discovered the top was dry his initial thought was that the gasket needed to be flipped and told me that. So, no....he wouldn't have a reason to lie to me. Anyway, I will grab the bolt they took out and take a look. Still have not had anyone tell me definitively that oil does not travel up that way....figured someone would by now. If you look at the video someone posted in the first page you can see the hump I am talking about that travels at the same angle as the oil galley was drilled heading over to the rocker assembly.

 

[NeverGiveUpYota]

So the oval copper lined hole on the right facing side... I am guessing is this the hole that folks have said if the gasket is flipped the passage for oil will be blocked? @LAMBCRUSHER or @OSS?

 

[NeverGiveUpYota]

I believe this is the "hump" your referring to. Its the rocker support (there are six). In the middle you can see the hole that goes downward which is how oil gets sent upward to the rocker arms... or so I understand.

 

[FJ40Jim]

I will grab the bolt they took out and take a look. Still have not had anyone tell me definitively that oil does not travel up that way....figured someone would by now. If you look at the video someone posted in the first page you can see the hump I am talking about that travels at the same angle as the oil galley was drilled heading over to the rocker assembly.

Oil travels straight up through the block from the cam bearing to block deck. Oval head gasket hole at head bolt allows oil to move sideways to the head bolt bore in the head. The headbolt bores through head are considerably larger than bolt, since bolts do not locate head. Oil moves sideways from headbolt through head at galley plug, over to base of rocker tower.

The correct tower has to be in the correct location, and the rocker shaft must be oriented correctly for the oil to actually fill the rocker shaft.

HTH.

 

[LAMBCRUSHER]

As I said, you are correct ( about the oil path) except for the fact that that bolt is not different.
@John Staton

 

[John Staton]

ok, made it back to town and stopped by the shop on the way in. Almost buttoned up and I have never heard it run more smooth. Header is on and I should be getting the new pipe and muffler on by Monday. I did ask them if they still had the bolt they switched and they had it. Below is a pic and you can see the bolt gets thinner about 3/4 of the way down. He told me he ordered a new head bolt from the dealer and the one he got had that step down toward the top and this was the reason no oil was making it up to the oil galley. Anyway, I may run by the toyota dealer next week and grab one myself for grins(the new one was already installed), but he confirmed that he did not flip the gasket around. Thought I would post a follow up in case someone else ran into the same issue. Guessing the rest of the bolts match this one, but they are doing their job holding things together.

 

[John Staton]

I believe this is the "hump" your referring to. Its the rocker support (there are six). In the middle you can see the hole that goes downward which is how oil gets sent upward to the rocker arms... or so I understand.

View attachment 1634333

thats not it....go to the pic that is on the video at the beginning of this thread. You can see a similar hump that runs at an angle through the head bold and toward the rocker tower. Anyway, it all worked out.

 

[FJ40Jim]

It's good to hear the PO's problem has been fixed, but its also important to point out that there is no problem with the stock headbolts. The only new headbolts available are the skinny 3F headbolts. The 75-84 headbolts are thicker & stronger, but do not pose any restrictions to oiling the top end.

Shown below is the 85-newer 2/3F skinny bolt, and the stout 75-84 2F headbolt.

 

[John Staton]

interesting....oh well, solved my problem. Can't wait to drive it. Not that it makes a difference according to your info, but mine is actually an 83...I listed it as an 84.

 

[John Staton]

Truck is headed to the exhaust shop to get a new pipe and muffler. Starts right up, runs smooth......I did notice on my bill that it got a new head gasket. Makes me wonder now about the clearance for that one bolt and if putting the skinnier one made any difference. I noticed that if I were to order a new set that I would get the skinnier according to pics online, but I know the feedback here is from folks with way more knowledge that me. Might pull that one bolt out where the oil comes up next time I am adjusting the valves to satisfy my curiosity.

 

[NeverGiveUpYota]

The invoice said new head gasket.... so maybe it really was on wrong?

 

[OSS]

I wouldn't remove just one head bolt on a fully torqued down head. Maybe you can get away with it without creating head mayhem, but I wouldn't risk it.

 

[John Staton]

The invoice said new head gasket.... so maybe it really was on wrong?

would make sense if the bolt diameter would have no impact on the oil getting up top.

 

[John Staton]

I wouldn't remove just one head bolt on a fully torqued down head. Maybe you can get away with it without creating head mayhem, but I wouldn't risk it.

ok...maybe I will get a glimpse of it in a tore down engine on here one day.....

 

[LAMBCRUSHER]

There are plenty of pics. Get a case, clear a month and hit the search function. It’s good it’s going. Don’t poke the tiger if it’s happy.

 

[JLB206]

Make sure the distributor is pushed all the way in. If not, you will have zero oil pressure.