Engine blows out

[SquadRogue]

At 80mph turns in the twins boxer engine would all the oil go to one side causing the other side of the engine to have no oil and blow out?

[evan]

If you're a baller convert to dry sump and all will be well. I know this will really come in handy when daily driving.. At 80mph. I worry about this with my sprintex. Dat shit eats oil doe.

[SquadRogue]

Originally Posted by evan

If you're a baller convert to dry sump and all will be well. I know this will really come in handy when daily driving.. At 80mph. I worry about this with my sprintex. Dat shit eats oil doe.

Yeah, I hope somebody has some facts for the FR-S

[evan]

I have yet to hear of an 86 that is cornering on such extreme banks at such speed that oil starvation is occuring. No worry.

[SquadRogue]

Originally Posted by evan

I have yet to hear of an 86 that is cornering on such extreme banks at such speed that oil starvation is occuring. No worry.

You are a cool dude

[boogle]

Originally Posted by evan

I have yet to hear of an 86 that is cornering on such extreme banks at such speed that oil starvation is occuring. No worry.

There's a lot of work in the internals to ensure the heads have sufficient oil even with hard cornering. At stock you're just not going to have a problem.

However if you start tuning with forced induction (300+ I think) and do hard turns on a track you could get oil starvation in the crank, specifically around the rod bearings. There's a big thread in either the forced induction or engine forums (can't remember). There's a workaround, but it's expensive and somewhat complicated. The issue here is oil pressure more than anything else.

[juliog]

Speed and power are irrelevant to this question. What matters is sustained lateral acceleration. Sure, a high enough, sustained lateral g-force will cause oil starvation. But that can happen with 100hp or 500hp, at 60mph or 130mph.

What is the maximum sustained g-force that will cause oil starvation on the twins? I have no idea. It might even be different depending on whether you are making a left or a right turn..

[boogle]

Originally Posted by juliog

Speed and power are irrelevant to this question. What matters is sustained lateral acceleration. Sure, a high enough, sustained lateral g-force will cause oil starvation. But that can happen with 100hp or 500hp, at 60mph or 130mph.

What is the maximum sustained g-force that will cause oil starvation on the twins? I have no idea. It might even be different depending on whether you are making a left or a right turn..

Au contraire: http://www.ft86club.com/forums/showthread.php?t=63723

[juliog]

How does that link contradict what I said?

we knew oiling would become a major issue when running high RPM and high load cornering (Think 1.7+ G sustained)
...
keep in mind we are running up to 9k RPM and running 325 Pirelli non DOT racing slicks with high downforce
...
Let me remind you 325 racing slicks and over 1000 lbs of downforce

[boogle]

Originally Posted by juliog

How does that link contradict what I said?

OK in the purest sense, if you put 'an car' in a centrifuge you'd eventually find the point where n Gs will trigger oil starvation in a cylinder head.

However, in the real world it's not just how many Gs, but the oil pressure (lots of contributing factors) mixed with the Gs (and angle), mixed with the design of the engine that will decide whether you get oil starvation and where it is. OP asked about this particular car, and oil starvation in the heads due to the boxer layout. In this case it just isn't going to happen. If you've got a heavily modified car in extreme circumstances you can get oil starvation... in the crank. Real world is just never as simple as a single force.

So as mentioned earlier by evan, a stock FRS/BRZ isn't going to get oil starvation due to hard banking.

[ImBatman]

Go home SquadRogue, you're drunk.

[Tcoat]

Squady put it this way; if while driving an FRS, you are in a turn that fast, long enough to drain your oil to one side, you already know the answer to your question and what to do about it!

[Koa]

Originally Posted by SquadRogue

At 80mph turns in the twins boxer engine would all the oil go to one side causing the other side of the engine to have no oil and blow out?

I hate you sometimes squidrogue..

[kiichiro]

my biggest problem was not oil & g forces, it was fuel and g forces

DAMN LEFT TURNS

I setup the car to handle like a beast, it did just that

sold the car because the fuel system is crap and no pump any vendor sells you is gonna fix that, it wasnt worth it for me to throw a motor at the car and a proper return type fuel setup(new custom fuel cell or new fabbed up tanks in oe spot etc), which was my next and only possible step; tracking the FA20 in stock form has its limits, the weakest link is the tranny, then fuel then motor. fix all three and I would have kept both our brz

a vette motor swap was on the table but for that money plus our trade we are making a cayman s into a track car that will easily EAT any frs or brz no matter how buit up...(adding quaife or guard LSD, JRZ coilovers,---> evoms rs350 kit<--- just wow etc etc) all for same money as trackifying a 86, proper

and no left turn fuel starvation, I dont miss that one bit!