Thread: Oil Squirters...Absolutely necessary? I don't think so...

I think they are nice to have if you already have a VE or DET,

I remember when i saw the oil pump of my old stock DE that i was taking apart it looked diffrent than my JDM Roller rocker DE pump.

some parts were slightly changed for the last few years of the sr20 engines and the oil pump was one of those ,

Nissan Part # 13500-2j200 is for the Roller rocker motors 99-01

and part # 13500-53j00 is for the B13,B14 ,NX ,P10 91-98

I dont know the VE part # but if you have a roller rocker motor you might not even need to get a VE or DET pump . As for capping the squirters i think the cost might out weigh the gain.

I think this is a good reason to keep the squirters right here. An extra margin of protection against detonation. That is why they are there, an easy way (and one of a few ways to do it also) to combat detonation.

^This is all I needed to hear. Thanks guys.

That's not the only thing preventing detonation, though. The tune has the most to do with prevention of detonation, tbh. Again, this falls back to the DE comparison, in that squirters are not present and yet no one seems to have any detonation issues directly related to the lack of oil squirters.

As far as someone saying that it's cost prohibitive, how?! You take the squirters out, use the bolts provided with them and fill the bolts with an epoxy-like compound, then loctite them in place. That costs you probably $.00 if you already have epoxies and loctite/etc. laying around.

Oh definitely not you are right there the tune does most of it. To be objective about it no one is really going to know whether they have had problems with or with out them at least on this board.
My feeling is if you have them great if you don't get a de machined for them. It is like Swain coating pistons you don't need them but they are beneficial.

You are crazy NOT to piston cooling nozzles if you have the chance to!

They draw so much heat away from the pison and upper side of the wrist pin its not funny!

You will amost never see wrsint pin oval wear or skirt wear on a cooling nozzled engine.

They continuously stream oil - to the base of the piston, which splashes onto the wall. Its a much better lubrication system then splash - and mean you can safely run a crank scraper without worrying about bototm end splash.

STOCK VE bearings are not chamfered for this reason. IF they were chamfered the crank would draw the oil and throw it around the lower chamber of the block. To reduce windage and oil temps nissan ran the straight flat bearing shell - which gives a stright clear exit for the oil to the windage tray.

Diesel Engines rely on cooling nozzles for reliability and longeivty - they run extremly high temps but rarely have crown failure or skirt wear.

exactly, finally someone agrees with me, haha.

like i mentioned before with cooling down hot metal with water. Dousing it in fluid almost instantly takes all heat away from it as where splashing it will only do soo much. And again not to mention the added benifits of the extra lubrication of the skirts and cylinder walls. When i had the pans off my built motor, there was absoutely zero piston skirt wear or cylinder wall wear.

Funny, because my stock DE that I threw a T25 on had what you're describing above. Oh, and the motor had around 120K miles on it when pulled.

Tekkie, common you know thats just the way the SR runs. hahahaha thats how this motor rolls. I pulled apart my buddies 190k mile original motor, Same way, no piston skirt wear, cross hatches still perfectly visible on the walls.

Same went with my old old 240k mile original motor that i pulled out of my very first se-r. SR's really only tend to have bearing problems if you neglect oil changes or dented pans. The rest of the motor tends to get pretty good oiling.

Thats and the cast iron liners are very good. The whole of our SR blocks have cast iron centres, the alloy is moulded around it.

Unisia jecs who made the factory pistons were ahead of their time on skirt design and legnth which stopped a lot of piston movement under high pressure. Our pistons also run a high pin height which means the piston seats and balances better through the stroke.

The Unisia Jecs pistons were also pretty accurate in terms of sizing and spec and weight.