Can it be done?
I have a picture showing the main oil galley.
You can clearly see the oil squirter dowel pin holes in cylinders 1-3, but the 4th is lacking.
You can clearly see there's no boss to machine flat and drill and tap for the oil squirter.
For a forged internals boosted daily driver maybe, for a boosted drag car definitely not necessary.
They're on the pipe for what, 10 seconds!
I'm talking about a 500whp road racing monster that's on the pipe for a minimum of 1200 seconds...
I plan to send my head, valves and pistons to Swaintech to have the piston domes, valve faces, combustion chambers and exhaust runners coated in their GoldCoat™ Ceramic Armor Thermal Barrier™.
The pistons I plan to use will already have a their form of skirt coatings.
Traditionally the Oil Squirters are aimed at the underside of the piston crown on the exhaust side of the combustion chamber.
I understand why the OEM used oil squirters in their turbocharged builds.
The pistons are made from pressure casted aluminum.
Very susceptible to damage from high heat and thermal cycles, especially the piston crowns and ring lands.
I even read that Nascar engines have as many as two oil squirters per cylinder...
Yeah, I've seen that 99 Galant 2.4L block.
That is different as well and will bolt up in an Evo.
I'll get my engine block up on the engine stand and start measuring it see if there's enough material there to drill and tap for the oil squirters.
I would check with DSM Junkyard and see if they have an answer. I thought that was the same block you had. The ridge looks too small to be anything but a casting item, but I would want to be sure like you.
One thing about it, they are cast iron. Welding it up wouldn't be difficult if somethings there.