2.4 Head.....advice please

[wobbly]

Okay, thought I would change the rocker gasket as part of a leak solving exercise.

As in other post, I found that at the back of the head , on the smooth lip that the rocker gasket sits on, was a section about 20mm wide that was about 1mm lower.

I thought that maybe it was a hard section of sealant, so tried to scrape it.....got a bit of a surprise!

The lower section came out!!

At the back of the head is a semi-circular hole - there is then an insert which sits in it. This insert is about 1mm too shallow, hence the 1mm depression.

Photo here - you can see the lip of the head, and the semi-circular cut-out:

Here is the insert:

Another shot:

Has anyone seen anything like this before?

It was sealed with gasket sealant, I guess I can do the same, then fill the depression with sealant - the new gasket should close the gap with a bit of blue hylomar.

Any thoughts.

Pete

 

[wobbly]

I might be worrying a bit too much.

I had a look at milners site, and the attached link shows a photo of a recon head - on the right side you can clearly see a semi-circular cut-out - maybe its to allow access to a bolt at that end of the camshaft?

On the toyota EPC I also found reference to a semi-circular plug.

Someone puit me out of my misery and tell me what its all about.....

Cheers

Pete

 

[adrianr]

Hi Pete

not sure

but on my pageros when i ran them they all had something similar.

hopefully someone else will chip in to help you.

 

[wobbly]

Well, whatever it is, its blue hylomared back in place, with the new gasket also hylomared across the back end to create an oil tight seal across the top. I managed to get the plug top level with the head lip.

Unless the engine is overly worn this rocker cover shouldn't be pressurised, I will run it for a few days and then check for leaks.

Thanks for the interest.

Cheers

Pete

 

[nivapilot]

Yep deffinitley a half round plug in the back of the 2.4 and 3 ltr heads.
Just need to glue it in position, just as you have done.
Best of luck with sealing your motor, I'm just about to start to try and locate a leak on mine....I think? it might be the oil cooler/oil filter housing laking, but can't get in there to look properly.

 

[wobbly]

I had a leak on my last filter, put on a new filter (toyota one), leak now stopped - so either old filter wasnt a good fit, or not fitted properly. They are tight to get on, and the usual smear of oil on the seal necessary,

I havent started the truck since reseating the rocker - I need to replace the turbo pipe that is split first, but hopefully the new gasket is oil tight, fingers crossed.

Pete