Oil Leak From Near Cylender Head

[koduRB25det]

Got a small oil leak in my r33 gtst from past 2 weeks. It is starting from between head and engine block near gear box. It is not dripping oil but gradually it increase. I just wonder is it my head gasket….? I have no coolant leak of smoke on my car. Any way to fix this thing without replacing head gasket…?Pls help

[Swiper the Fox]

Sure its not your 1/2 moons leaking?

[koduRB25det]

no i chked that its not the half moon seal mate.

i cleaned the thing and chked. its starting from last head bolt towards to gear box. i did the compression test. they all ok. results are 165:170:175:165:174

Sure its not your 1/2 moons leaking?

[payback21]

Rocker cover gaskets leaking oil down the back of head and block?

[shyr33]

As 'payback21' said, I thought I had a similar problem then I looked at the back of the engine and found oil slowly leaking from the rocker cover gaskets down near the gearbox area. So have a look at that. It's alot cheaper and easier to replace than a head gasket!

[mad082]

i wouldn't be suprised if it was just the usual rocker cover leak. this is extremely common.

if it is actually coming from between the head and the block then a compression test wouldn't show much as that only shows what is happening between the head and the block around the piston. the block could have a hole in the side of it and you could still get a decent compression test reading.

[koduRB25det]

this is the oil leak from. pls see the image

I can see oil on that bolt b4 it driping to the bell housing.slowly oil leak spreading back of the engine.

what do u think abt this.

I did my compression test again using different gauge. [T&E Compression Tester]

results are

110:110:120:110:120:120

my prob is car is running very smooth. no smoke nothing. and it hits 10 psi 3000-3500 rpm when the engine is warm up.

im using castrol edge 10w-60. car want rev up to red lne. but b4 i use 0w-40 castrol edge. those days it rev up to 6000 rpm no prob.

pls consider these things and write ur sugession. im not very good with rb engines

i wouldn't be suprised if it was just the usual rocker cover leak. this is extremely common.

if it is actually coming from between the head and the block then a compression test wouldn't show much as that only shows what is happening between the head and the block around the piston. the block could have a hole in the side of it and you could still get a decent compression test reading.