1977 2F-Leaking from right side

[Indefinite]

Guys, here is what I got:

-Major leak, at Hwy speed, only on the right side (Passenger) of the motor. I cannot tell, but looks like it is coming from either one of these:

-Oil pressure/filter housing to block
or
-I put a t split on the housing, I have the factory Toyota sensor on one side, after market gauge on the other. I think the polypropylene tube might be cracked, but I cannot find the leak.

Thing is when I trace the leak, its hard to tell where it is coming from. This leak only occurs at hwy speed, above 50 mph.

Has anyone had a leak in this area before?

Thanks in advance

 

[Steamer]

I put a t split on the housing, I have the factory Toyota sensor on one side, after market gauge on the other

Did you mismatch threads? The housing and sensor are BSPT and a lot of aftermarket mechanical gauges are NPT.

 

[Indefinite]

Did you mismatch threads? The housing and sensor are BSPT and a lot of aftermarket mechanical gauges are NPT.

View attachment 3347010

I did the t fitting about 15 years ago, it has been fine.

I am thinking it is coming from the tube, as it is probably old and cracked. Downfall is, oil is everywhere, so it’s hard to trace

 

[Paul_A]

On the up side, it is self rust-proofing.

 

[Steamer]

Replacement tube kits are available in plastic or copper. Most of my swamp buggy friends swear by copper and fear the plastic. I’ve always run the plastic because I think plastic has more flex when I need to remove my gauge cluster. I did go copper once, and I’m sure it’s just coincidence but my first trail ride out and a cracked tube at the gauge was dripping on my foot. I had a spare plastic kit on board so I’m back to plastic.

Degrease, replace the tube, re-torque the housing bolts, and see how it goes. Clean and dry is key for finding leaks.

 

[Rocky_LC]

Just checking, but you are sure it’s not coming from the pressed-in plug in the oil gallery up in the head?

It’s bad if those pop out.

High RPM means high oil pressure…

Rocky

 

[Indefinite]

Just checking, but you are sure it’s not coming from the pressed-in plug in the oil gallery up in the head?

It’s bad if those pop out.

High RPM means high oil pressure…

Rocky

Now you are talking, where is this located? Got any pics? I want to have a check list of points to search and see, cross of the list.

 

[fjwagon]

If think what I think it is, I would definitely would not move it. There is plug/insert that is can be removed when a block dipped in rebuilding process. Take a closer look and will see nipple type plug on side of the block. Maybe near the the distributor/head area. If it comes off while driving, the 2f will definitely spin a bearing. You purchase this plug at the dealer.

 

[Rocky_LC]

A much better solution (if this is where the leak is coming from) is to carefully remove the soft metal plug, clean out the hole with a bunch of Q-tips, then tap it, and install a Allen set-screw in your tapped hole with lock-tire.

Tap it with a heavily greased tap, removing it, and cleaning it often, to ensure that you don’t get metal shavings into the oil gallery.

I’ll try and find a thread on this.

The plug is on the top of the head, above the distributor, and set in at an angle…. IIRC.

Rocky

 

[fjwagon]

This may help

Oil galley head plug

There were a few writeups about this issue but few pics so I thought I would post some up. Please ignore the Big Gay 2f colors. Location on head. Above and slightly to the right of the 5 plug hole from right to left (or front of block to back) It's a known potential problem on 2f...

forum.ih8mud.com

 

[Rocky_LC]

Here’s another…

Go to page 2…

Side Plate Gasket Leak?

Hi guys. I had never heard of the "side plate" on the passenger side of the engine until seeing it in one of the restoration threads. I think I have leaking at the side plate, as the it and the engine are oil wet from there down. Thought at first if might be valve cover gasket, but wetness is...

forum.ih8mud.com

 

[Indefinite]

Went and checked, I’m good there. 15 or so years ago had my head done and it is plugged.

I also have traced down, the oil leak is below the cam/lifter cover, so it’s either coming from:
-oil pan gasket
-distro into block
-oil pressure sending unit
-mount to block for oil pressure sending unit
-after market poly tubing connection

Will update as I am tracking!

Thanks guys

 

[fjwagon]

If oil leak not that obvious, at this point a high pressure wash is what I would consider. And then keep inspecting the suspected areas