Thread: Are we sure regular SR20DE engines don't have piston oil squirters?

http://www.sr20-forum.com/turbo/26606-oil-squirters-absolutely-necessary-i-don-t-think-so-2.html

really old thread

oil squirters for na block - SR20 Forum


At the end of the day, its peace of mind...just have to figure out how much that insurance it's gonna cost me :-p

You guys are probably right. Even a DE can take a lot of punishment.

What caught my attention was Nissan engineers added those oil holes even to the rods that were designed specifically for blocks that come with oil squirters, (like the GTI-R rods for example). Maybe that was just overkill or maybe they had a reason.

I take it these are on roller rockers too?

I figure it's a cost saving measure. This way they don't have to alter the production line at all.

Hmmm. Wondering if these holes can be machined into aftermarket rods?

My motor is open right now. De block, no squirters. Ve head. 9200rpm

I'm quite sure they can be machined into aftermarket rods. If I were doing it, I'd use a bearing to make sure I got the hole lined up properly and then make sure to chamfer the hole on the bearing side for oil flow (as that's how stock ones are done). The hole is ~1mm on the jet side and ~4mm pre-chamfer on the feed side. The angle is ~10 degrees from vertical.

I mailed Eagle to ask why they do t have the hole and if I could have it drilled by my engineering shop. This was their reply:

"Ronnie,
We do not have that oil hole because it weakens the rod considerably. There is a LOT of oil spraying in all directions between the side of the rod and the crank. There is plenty of oil being sprayed everywhere in the bottom of the engine. Do not drill the oil hole you are talking about.

Thanks,

Alan
Eagle Specialty Products, Inc."

I agree, I would not drill a hole into a rod. Easier to drill a hole into the block for oil squirters anyway. Just have to be sure that the pistons you choose will not clip the oil squirters off like some folks have managed to do.

I wouldn't trust most places to drill that hole either. However I'm running a de block (read: no oil squirters) plus a crank scraper with Teflon blade and a custom windage tray. I doubt my cylinder walls are seeing any oil.

If that were true, wouldn't the rings dry up and seize up the internals and cause all sorts of other issues that did not exist before hand?