I've been looking at getting a windage tray and/or crank scrapers for the blacktop that I will eventually buy and put into the AE92. The 4AGE blacktop has oil squirters, and I assume they squirt from somewhere higher in the block than the scrapers would be mounted. Could installing scrapers cause a drainage problem?
Oil squirters are usually part of the connecting rods, so yes you'll be fine.
The oil squirters bolt into the oil galley in the block with a 90' angle tube that points up the bore and squirts the bottom of the pistons.
That said, no interference from a crank scraper. One thing to watch out for though...the existing windage tray and oil pickup tube are held in place at one point by common bolts. If you bolt it back together wrong, you won't get oil pressure.
This is BMW, but same exact thing:
Ah, I stand corrected. Thinking about it, this solution make a little more sense than other methods I've seen.
I have built and re built more 4AGE's than i care to think about. And I never have seen the squirters like that. If I remember correctly the is a small hole in the rod near where the big end meet the beam. As the roof swings out to the side it aims the hole up at the bottom of the piston.
While my direct Toyota experience with oil-squirters was on a 3SGTE, every oil squirter I have ever seen is of this design. ? I couldn't find any pictures of a 4AGE squirter.
Typical piston oil squirter:
I am less familiar with the bottom end since I swapped in a short block on my silvertop, but I can tell you that there are no oil squirters that look like that. Everything is handled through passages. Here is a 4AGE oil flow diagram:
The oil squirters look about exactly like that. I've rebuilt my silvertop and it should be the same as the blacktop. They also have squirters through the connecting rod, but they are different than the squirters in the block. I believe (without looking) that the high comp engines have squirters aside from the rods as well. Look real similar to the squirters in post #3 and #6.
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