So this a small over looked topic and when brought up not many have a good solid answer.
I have blocked off my oil squirters in my recent build and many other builds i have assisted on have done so.
There's the main question but why?
Well here are some good answers for ya and ill link also where i got mine from.

- forged pistons dont need the cooling effects of the oil squirters, where stock pistons do

- more oil flowing to your bearings

- if you don't block them off after you remove the squirters you have a good chance of ruining your bearings because of low oil pressure.

- Less oil on the pistons means less reciprocating weight and more free power

- If you go with a custom stroke and relocate the wrist pin, your piston skirt might actually hit the oil squirter's... so you would have to remove them; just an example...

- Oil squirters have there place, just not necessary for street or drag racing. Endurance racing, yes. Running a 500 Mi Nascar race between 8000- 9000 RPM's and trying to get a little better gas milage (leaner) yes.

Yes these work for K series motors too...


And here they are installed in my own block.
Remember to use loctite and tq them down to 8ft lbs.



Now team feel free to elaborate and lets keep this for anyone looking to build a motor in the future.

Happy Boosting!!