VB242
I.M. Weasel
- Joined
- Sep 21, 2011
- Location
- Driving the No Malarkey Bus
Where did you tie it in to the engine? I was thinking the 1/4" NPT hole tapped on the front of the engine at the end of the oil gallery, but not sure if that's big enough.
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Oil Starvation road race b230
- Thread starter RoadRacer4Life
- Start date
Where did you tie it in to the engine? I was thinking the 1/4" NPT hole tapped on the front of the engine at the end of the oil gallery, but not sure if that's big enough.
Stiggy Pop
In the cool kids club
- Joined
- Feb 27, 2011
- Location
- Granville, MA
lifted the pictures from Dr. Fanning's thread:
Accusump
We Tee'd off of the line (AN 10) to the oil cooler right at the sandwich plate. We also log oil pressure in our AIM data logger so we know how bad it was and how well the Accusump works, if you race hard it will keep your pressure up. When looking at data it was clear the major drop in oil pressure is not in long corners but when you have a hard brake zone and then turn into the corner, the oil is at the front of the head and pan leaving little at the pickup.
We Tee'd off of the line (AN 10) to the oil cooler right at the sandwich plate. We also log oil pressure in our AIM data logger so we know how bad it was and how well the Accusump works, if you race hard it will keep your pressure up. When looking at data it was clear the major drop in oil pressure is not in long corners but when you have a hard brake zone and then turn into the corner, the oil is at the front of the head and pan leaving little at the pickup.
DrZiplok
Member
- Joined
- Nov 25, 2015
If you have to ask, it means you aren't running an oil cooler. You should run an oil cooler. 8)
VB242
I.M. Weasel
- Joined
- Sep 21, 2011
- Location
- Driving the No Malarkey Bus
I'm using the water/oil cooler off a 940T, thank you very much. I also have a crank scraper, just FYI.
DrZiplok
Member
- Joined
- Nov 25, 2015
Just saying; if you are pushing hard enough to need to worry about this, you will want to run a real oil cooler.
A lot cheaper than a cooked engine, or a even just a wasted track day.
- Joined
- Dec 23, 2006
- Location
- Rushing Lane, Scappoose, OR
Why isn't the oil to water oil cooler heat exchanger thing real enough for you? Volvo thought they where. They do have a bigger radiator in those cars.
VB242
I.M. Weasel
- Joined
- Sep 21, 2011
- Location
- Driving the No Malarkey Bus
Right and I have that bigger radiator in my 242 to support it. Good enough for 6.8L John Deere turbo diesel as well.
- Joined
- Jul 3, 2005
- Location
- Montgomery Alabama
Added a hump to the oil pan.. Taking the car to TGP tomorrow for testing and Barbers again on the 3-4. Hopefully the issue wont happen anymore.. I'll keep the group updated. Here's some pics..
- Joined
- Dec 25, 2002
- Location
- mont, AL
nice
How’d it go, Sam? Your only change was the pipe? I would think that the design doesn’t drain back into the pickup area great, as it introduces a hump between the two low spots?
Dana, what are you using to control your Accusump? Or do you just leave it on all the time? We run one as needed and used to have a driver activated switch. That solenoid failed so now we have a manual control valve, but have to pit to turn it on.
As long as the oil level has been right at the max level, we haven’t normally had a problem. But, at ORP in July we were having problems and even with the Accusump on it didn’t seem to be helping. That being said, we had a loose connection on our oil pressure sending unit so I can’t 100% confirm everything, other than the oil level now is nearer the minimum mark on the dipstick.
Our problems are also after hard braking and mid-corner. We’ve tried baffled pans in the past, a pipe on the side in the past, ans can’t confirm that anything was definitely better. One trap door setup was actually worse, and maybe that one or another had a plate fail that ended up moving around in the pan and blocking the oil pickup. So, for the last three years we’ve been running a stock pan and using the Accusump when needed. If the oil was at the full mark it was almost always ok. We went to wider tires this year though, so grip levels are higher.
Here’s a video from last year when the oil level was a bit low. https://youtu.be/bHTkPCQ5ZLU
Dana, what are you using to control your Accusump? Or do you just leave it on all the time? We run one as needed and used to have a driver activated switch. That solenoid failed so now we have a manual control valve, but have to pit to turn it on.
As long as the oil level has been right at the max level, we haven’t normally had a problem. But, at ORP in July we were having problems and even with the Accusump on it didn’t seem to be helping. That being said, we had a loose connection on our oil pressure sending unit so I can’t 100% confirm everything, other than the oil level now is nearer the minimum mark on the dipstick.
Our problems are also after hard braking and mid-corner. We’ve tried baffled pans in the past, a pipe on the side in the past, ans can’t confirm that anything was definitely better. One trap door setup was actually worse, and maybe that one or another had a plate fail that ended up moving around in the pan and blocking the oil pickup. So, for the last three years we’ve been running a stock pan and using the Accusump when needed. If the oil was at the full mark it was almost always ok. We went to wider tires this year though, so grip levels are higher.
Here’s a video from last year when the oil level was a bit low. https://youtu.be/bHTkPCQ5ZLU
J_Jones
Active member
- Joined
- May 1, 2005
- Location
- Lincolnton, NC
I like the drain on it and how it adds to total volume, interested to hear how it worked.
I forgot to mention that if we overfill our crankcase above the maximum mark, it usually pops up the dipstick and makes a mess everywhere. Erland(Cox) was telling me that on his race car(s) they pop out if the oil level is above halfway on the dipstick.
Kyle; We tried just opening the manual valve to top up as needed but found that was really sketchy and prone to driver error, so for the past 4 years we pressurize the AccuSump with 60 psi oil close the valve and set the pan level at just slightly more than full (extra 1/2 litre) before an event. Once we have the motor started in the morning we open the valve and leave it open for the entire race day, it automatically pressure balances the system as needed. We have not had any oil related issues at all. Dana
rb92673
racecar
- Joined
- Jan 17, 2017
- Location
- San Clemente
Any details on where you added the accusump into your system? I already have two sandwich adapters on my B230ft, one to the oil cooler and another for the remote oil filter. I am thinking about running a T off the filtered oil to go directly to the turbo, so my oil system is getting complicated.
- Joined
- Jul 3, 2005
- Location
- Montgomery Alabama
Is it better? Maybe? but still seeing signs of starvation.. notice the dash when my hands get out of the way at the 10:12 mark you can briefly see the oil light flash and the center gauge in front of the shifter is the oil pressure gauge.. Its electric so its slow to react but you can see it swing low briefly on exiting that turn.. I am wondering if the oil is sloshing forward under hard braking and that is causing the starvation? at first i thought it was because the oil was sliding up the side of the block but now i'm not so sure.
<iframe width="560" height="315" src="https://www.youtube.com/embed/Wm9Nob8TWAk" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
<iframe width="560" height="315" src="https://www.youtube.com/embed/Wm9Nob8TWAk" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
Thanks Dana. We'll probably give that method a whirl. The last race at ORP might have been giving false low oil pressure readings because one of the wiring terminals on our oil pressure sending unit had lost its nut, so the connection was loose. Hard to say for sure, at this point!
The only problems I see with your setup is that our car will typically pop the dipstick up when we overfill it, and you can't easily check the oil level mid-race without some solid dedication and focus which is sometimes hard to come by, haha. The ring seal on the #4 cylinder is not as good as it once was, so maybe it'll be ok with the next motor. We might zip tie the dipstick down for the next race at PIR in a week and a half.
Thanks Dana. We'll probably give that method a whirl. The last race at ORP might have been giving false low oil pressure readings because one of the wiring terminals on our oil pressure sending unit had lost its nut, so the connection was loose. Hard to say for sure, at this point!
The only problems I see with your setup is that our car will typically pop the dipstick up when we overfill it, and you can't easily check the oil level mid-race without some solid dedication and focus which is sometimes hard to come by, haha. The ring seal on the #4 cylinder is not as good as it once was, so maybe it'll be ok with the next motor. We might zip tie the dipstick down for the next race at PIR in a week and a half.
Kyle;
If you follow our procedure the wet sump is not over full, the fluid only moves from the AccuSump when the engine pressure drops and that is typically only when the oil has moved away from the the pickup. As soon as the pump gets oil again and pressure builds the oil returns to the AccuSump, leaving the wet sump at the same level. Dana
I was thinking the 0.5L of overfilling was going to be an issue, but now that I think about it more, we may have run that successfully in the past. When shutting the engine off we can't check the current oil level unless the valve is shut back off at high rpm. Either way, we haven't been consuming more than 0.5-0.75L over 6-8hrs of racing in the past, so it should be fine as long as that remains the case. We'll give it a whirl and compare it to what we experienced last time at PIR, when we were not bothering with the accusump because the oil pressure was usually fine. After the race is when I found out that Marc had been seeing the oil pressure light more frequently than I... Oops!
Does anyone have pictures of a Group A pan? I haven’t tried searching for any yet. Erland suggested they’re available but expensive.
Marc just sent me this link to some modified pans: https://www.kohlerracing.se/cat_3.php?cat=69&&prod_id=69
Marc just sent me this link to some modified pans: https://www.kohlerracing.se/cat_3.php?cat=69&&prod_id=69
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