Extra baffling for the oil pan.
#1
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Extra baffling for the oil pan.
I spent some time and made a baffle for my oil pan with hinged doors.
Seems to work, It definitely slows the slosh down. I filled it with a gallon of water to test it. The little hing doors slap shut when when the fluid sloshes forward. It sloshes a lot less with the added baffle than without it. It still seems to drain back into the lower part of the sump just a quick as ever.
Should help keep oil around the pickup under hard braking. I am not sure but I think I have seen some oil pressure fluctuation under hard braking. This cant hurt might help.
Bob
Seems to work, It definitely slows the slosh down. I filled it with a gallon of water to test it. The little hing doors slap shut when when the fluid sloshes forward. It sloshes a lot less with the added baffle than without it. It still seems to drain back into the lower part of the sump just a quick as ever.
Should help keep oil around the pickup under hard braking. I am not sure but I think I have seen some oil pressure fluctuation under hard braking. This cant hurt might help.
Bob
Last edited by bbundy; 07-03-2010 at 03:43 AM.
#4
Very nice.
It is very similar to the Maruha one: http://chikaramotorsports.com/catalo...5&cat=1&page=2
It is very similar to the Maruha one: http://chikaramotorsports.com/catalo...5&cat=1&page=2
#6
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Bob
#12
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Miatas definitely suffer from oil starve under braking, I've seen my low pressure light go on more than a couple of times. Usually after a high-G corner that dumps straight into a hard braking zone, i.e. 8 into 9 at T-hill or 2 into 3 at calspeed.
#14
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High G corner that dumps into a hard braking zone seems to be worst case I think. Hard straight line braking doesn’t seem to be as bad, it is more of a rhythm thing going on than a pure steady state G-load I think got to get the motion of the ocean going.
Bob
Bob
#15
Nice baffle and fab skills!
I have a Maruha baffle, which is very similar.
Unfortunately, it doesn't fix the pressure drop in heavy straight-line braking, which is where I see 100% of the pressure drop.
Lateral g's do not effect oil pressure at all, in either direction.
The black trace is a recent datalog of my stock non-baffled, non-crank scraper engine. The red trace is a datalog from last year of my baffled & crank-scraped high-revving N/A engine.
Both show consistent pressure drops under the same conditions, though the baffled pressure drops are proportionally bigger. The difference in oil pressure from one engine to the next is due to different oils, different temps, and different engines. The two graphs do show that pressure drop under heavy braking does drop pressure significantly, regardless of having a baffle (red trace) or not (black trace).
Accusump anyone?
I have a Maruha baffle, which is very similar.
Unfortunately, it doesn't fix the pressure drop in heavy straight-line braking, which is where I see 100% of the pressure drop.
Lateral g's do not effect oil pressure at all, in either direction.
The black trace is a recent datalog of my stock non-baffled, non-crank scraper engine. The red trace is a datalog from last year of my baffled & crank-scraped high-revving N/A engine.
Both show consistent pressure drops under the same conditions, though the baffled pressure drops are proportionally bigger. The difference in oil pressure from one engine to the next is due to different oils, different temps, and different engines. The two graphs do show that pressure drop under heavy braking does drop pressure significantly, regardless of having a baffle (red trace) or not (black trace).
Accusump anyone?
#17
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Damit now I’m thinking I need an Accusump.
Over rev error on a downshift under braking while having hardly any oil pressure could be really bad for rod bearings. I could easily se myself doing that.
Bob
Over rev error on a downshift under braking while having hardly any oil pressure could be really bad for rod bearings. I could easily se myself doing that.
Bob
#18
You do need an Accusump. I have a 2-quart model mounted under the trunk hinge. Put the weight kind of high, but at least it is back and near the center of yaw.
I love having oil pressure before I start the car and during hard braking too. Now if I could just get my fuel starvation in extended right hand turns solved.....
M
I love having oil pressure before I start the car and during hard braking too. Now if I could just get my fuel starvation in extended right hand turns solved.....
M
#19
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You do need an Accusump. I have a 2-quart model mounted under the trunk hinge. Put the weight kind of high, but at least it is back and near the center of yaw.
I love having oil pressure before I start the car and during hard braking too. Now if I could just get my fuel starvation in extended right hand turns solved.....
M
I love having oil pressure before I start the car and during hard braking too. Now if I could just get my fuel starvation in extended right hand turns solved.....
M
Also, can I stack a Mocal plate and one of these? That would make install too easy.