Has anyone upgraded their 2nd Gen 3SGTE oil pump to the units from the newer 5SFE Camry? I'm reading that it fits, but a part of me is kind of skeptical about it.

Even if it fits and works then you have to worry about if you'll have enough oil capacity to keep the crank from starving, if you need an increased capacity pan to go with the higher flow pump that's something you need to know. If no one has done it and documented it I wouldn't want to be the guinea pig.

>

Morosso does have a bigger oil pan......

Hey Alex! Longtime no speak!
Anyway - yes, Stephen and I did it on my GT2 back in the day. IIRC all I had to do was swap out the gears because the teeth are slightly differently shaped. Didn’t want the 5S gear to chew up the fresh timing belt. Also IIRC it improved the 3S’s naturally low oil pressure by ~2PSI at idle (Which is a dramatic improvement).
I’ll be doing it to my MR2T in a few months when I do it’s T-Belt.

holy ****. you're still alive? lol.

I've already ordered and installed the 3S pump. I'll do the 5S pump next time if I keep the car long enough.