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More catch can advice

torque124

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They all pretty much work the same, you won't see a difference in what is collected with the other brands. Everyone's drivers side picks up little or no oil, that's the nature of the beast.
I agree to disagree here... I had a first version JLT a couple of years back on my 13" GT500, and caught bugger all in one year. Switched to Bob's , and I was emptying oil on a monthly basis. I collected like a half a quart in a year or so.

Just my 2 cents.

To quote the animal farm "all animals are equal, but some of them are more equal than the others" :)
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DocWalt

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My Ford can catches plenty of oil. I'm sure it can be improved upon, but whatever. It looks OEM and that's all I really cared about.
 

firestarter2

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I agree to disagree here... I had a first version JLT a couple of years back on my 13" GT500, and caught bugger all in one year. Switched to Bob's , and I was emptying oil on a monthly basis. I collected like a half a quart in a year or so.

Just my 2 cents.

To quote the animal farm "all animals are equal, but some of them are more equal than the others" :)
Does your Bob's rub on your hood
 

icormba

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I am somewhat reluctant to ask this, but what exactly do the catch cans do? I am an intermediate driver on the track. I have run two events this year, have two more days remaining, and will average about eight days a year. I have a 2017 with 1100 miles and no catch cans.

Sorry for the basic question. Thanks in advance.
I'm a beginner on the track and the catch can is one of the 1st things I put on my car. The catch can was and still is catching a crap load of oil during daily driving even before I hit the track. I highly recommend one!! Passenger side that is. I have yet to see any oil in the driver side... then again I'm just a beginner with only 1 track day.


This is what it's collected before hitting the track!
picture.webp



I should mention that I just bought one for my new RS, Radium Auto, and it is really really nice! Wish they made one for the GT350! I have the JLT on the GT350.
 
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Trackaholic

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The PCV system should flow in a consistent manner. The intake is through the drivers side, located in a higher pressure area, while the exit is on the passenger side, going to a lower pressure area. That creates the suction (the "Positive" in PCV) to forcefully ventilate the oil vapors so they aren't expelled into the atmosphere through various seals or other areas.

Therefore, under normal conditions, the driver's side should remain dry, since it would be bringing the clean intake air into the system, while the passenger side would be oily due to the exiting vapors. Normally the engine can handle those vapors just fine, and they will burn up during combustion.

However, under high cornering loads, it is possible for a large amount of oil to get sucked into the PCV system, which can foul the airflow sensors and lower the effective octane rating. I had a friend with a viper who went into limp mode during a track day because a large bolus of oil got sucked into his intake and caused the airflow sensor to report a failure. After cleaning things out, the car was fine, but losing power on corner exit while on track can be dangerous, hence the recommendation for catch cans.

I have the UPR setup and get quite a bit in the passenger side, but have not yet had anything on the driver's side.

For the purposes of stopping oil from fouling sensors, I think any catch can will work just fine.

For the purposes of catching the normal vapors, some have larger reservoirs, more mesh, bigger volumes, all of which can slow the air longer and give the vapors more time to condense and drip into the can. With my UPR, I do see some residue on the exit port, but I also know that the unit is trapping a large amount of oil. I'm sure most other designs do a great job as well. I do like the quality and robust feel of the UPR, and am happy with that design.

I have a friend with an FD RX7, and he made his own catch can out of a nalgene or camelback water bottle. It's just resting on some part of his engine, and is actually very nice design because it is easy to see when it needs to be emptied and is very easy to unscrew and clean out! Point being, I think it is hard to go wrong in most cases.

-T
 

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Av8orntn

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Thanks everyone. I got in touch with the UPR guys today and got my order in.
 

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rocsteady

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I received and installed the UPR set up but really didn't even stop to look at how it works to empty. Just remove the driver side can and unscrew one of the "plugs" and drain? I think there was a silver plug on the bottom and one on the side if memory serves.
 

TRS7139

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I have the Ford Racing ones as I don't want any hassles at the dealer (I know technically it doesn't matter). I don't understand the comments about emptying them. I unscrew the top, use a couple paper towels to soak up the oil and close it again. Both sides takes less than 5 minutes. Never have any oil in the driver's side, but I track my car, so I'm cool with the unnecessary protection :)
+1........ Pretty simple.
 

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Trackaholic

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I received and installed the UPR set up but really didn't even stop to look at how it works to empty. Just remove the driver side can and unscrew one of the "plugs" and drain? I think there was a silver plug on the bottom and one on the side if memory serves.
I remove the can and pull the bottom plug (that's for the passenger side). I never have anything on the driver's side, so I just leave it alone.

-T
 

Zombo

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The PCV system should flow in a consistent manner. The intake is through the drivers side, located in a higher pressure area, while the exit is on the passenger side, going to a lower pressure area. That creates the suction (the "Positive" in PCV) to forcefully ventilate the oil vapors so they aren't expelled into the atmosphere through various seals or other areas.

Therefore, under normal conditions, the driver's side should remain dry, since it would be bringing the clean intake air into the system, while the passenger side would be oily due to the exiting vapors. Normally the engine can handle those vapors just fine, and they will burn up during combustion.

However, under high cornering loads, it is possible for a large amount of oil to get sucked into the PCV system, which can foul the airflow sensors and lower the effective octane rating. I had a friend with a viper who went into limp mode during a track day because a large bolus of oil got sucked into his intake and caused the airflow sensor to report a failure. After cleaning things out, the car was fine, but losing power on corner exit while on track can be dangerous, hence the recommendation for catch cans.

I have the UPR setup and get quite a bit in the passenger side, but have not yet had anything on the driver's side.

For the purposes of stopping oil from fouling sensors, I think any catch can will work just fine.

For the purposes of catching the normal vapors, some have larger reservoirs, more mesh, bigger volumes, all of which can slow the air longer and give the vapors more time to condense and drip into the can. With my UPR, I do see some residue on the exit port, but I also know that the unit is trapping a large amount of oil. I'm sure most other designs do a great job as well. I do like the quality and robust feel of the UPR, and am happy with that design.

I have a friend with an FD RX7, and he made his own catch can out of a nalgene or camelback water bottle. It's just resting on some part of his engine, and is actually very nice design because it is easy to see when it needs to be emptied and is very easy to unscrew and clean out! Point being, I think it is hard to go wrong in most cases.

-T
Very interesting information. What I would add is that, based on my observation of the GT350, the MAF Sensor is well ahead of the PCV system in the air flow tract. Someone should correct me if I'm wrong but the MAF is that small Gismo about 4 inches to the left of the Air Filter on the air inlet duct. In this location, getting fouled up by the PCV system would seem to be unlikely.

For the record, I just ordered the FP passenger side from Summit Racing - not that I think it is necessary for my driving habits, but it allows me to fiddle around more...
 

torque124

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torque124

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Very interesting information. What I would add is that, based on my observation of the GT350, the MAF Sensor is well ahead of the PCV system in the air flow tract. Someone should correct me if I'm wrong but the MAF is that small Gismo about 4 inches to the left of the Air Filter on the air inlet duct. In this location, getting fouled up by the PCV system would seem to be unlikely.

For the record, I just ordered the FP passenger side from Summit Racing - not that I think it is necessary for my driving habits, but it allows me to fiddle around more...
Yep, no way can the mass flow sensor get dirty from oil in the PCV; it is where you noted, just after the air filter (from an air flow point of view).
 

DocWalt

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Yeah, but the front most right screw is right under the coolant hose, making it a pain to remove/screw in... I like the solution from JLT better, just unscrew the reservoir.
The screws are irrelevant when you disconnect the two hoses and two push pins...
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