Holden 2a build "OPAL"

Attachment 172891

Opal doing a load to green waste………

Cheers Paul

Looks like a garden growing in the back:Rolling:

Its that season again...........

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Common sense has prevailed and firewood collection is allowed as a reason to leave home

Cheers Paul

Attachment 179106 Yeeha this find keeps on giving

Attachment 179107 View from the top

Cheers Paul

Opal has developed a tick in the 3.3 Holden power plant. I’ve replaced the hydraulic lifters and it’s still there and no adjustment of rockers will make it go away. Removing no 1 plug lead while the motor is running and the tick goes, replace lead without electric jolts up my arm and tic returns. Compression is 135/140 psi across all cylinders with no1 being 140psi.
My diagnosis without stripping the motor is a cracked or broken piston skirt on no 1 piston.
Fortunately I have other vehicles to fall back on, I also have a red 202 that I started and ran for a few minutes before I removed it from a doner parts car a few years ago.
My intention is to inspect clean and reassemble this engine and swap it for the 3.3.
Today I pulled the head off the 202 and there is only the very slightest of ridges at the top of the bore so I’m taking this as a good sign.
I will post pictures of progress and will probably need some advice ,first impressions are that the Holden 202 is a lot less complex than the 2.25 Rover engine in freshened up a few years ago

Cheers Paul

I am probably wrong but just wondering if you could have a faulty spark plug. The centre electrode these days is made in two pieces, you may have a spark jumping internally. The other thing is you could have a bent pushrod that is hitting on the block or broken ring.

Defiantly not a bent push rod I checked them as I did the lifters,I will swap spark plugs and see what happens, something I never thought of thanks

Cheers Paul

Swapped around spark plugs noise still in no1 cylinder somewhere. So I’ll pick away at the red 202

Cheers Paul

Some progress stripping and cleaning head components

Attachment 181203 Attachment 181204Attachment 181205

Rocker pivot saddle has arrows cast in them which point towards the manifold when assembling

Attachment 181206 Valves next

Cheers Paul

Special spring compressor tool
Attachment 181234

Valves removed and cleaned will lap them before I put everything together
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There were spacer washers under the exhaust valve springs no mention of this in the manual

Attachment 181238

Cheers Paul