MINI2

MiniFr34k · Jul 29th, 2005, 03:24 AM

Any of u folks bothered with this in australia? how much did it cost u to get one? link pls?

-pete

StuJones · Jul 29th, 2005, 05:02 AM

I wouldnt worry about it. One of the more useless add-ons in opinion

Amigo · Jul 29th, 2005, 05:29 AM

http://www.northamericanmotoring.com...ighlight=catch

MiniFr34k · Jul 29th, 2005, 05:53 AM

ah thanks
btw i try not to read toooo much from NAM, i find theres abit too much biasness at times.

Cheers.

obehave · Jul 29th, 2005, 12:41 PM

Mine collects oil so I'm thinking it isn't a placebo.
I have to ask Stu, do you actually have one or tested one?
Just curious.

CoryB · Jul 29th, 2005, 05:18 PM

Quote: Originally Posted by obehave

Mine collects oil so I'm thinking it isn't a placebo.
I have to ask Stu, do you actually have one or tested one?
Just curious.

Same here.

I guess I'll keep Stu's opinion in mind the next time I'm dumping the sludge out of my OCC.

StuJones · Jul 29th, 2005, 09:51 PM

Quote: Originally Posted by obehave

Mine collects oil so I'm thinking it isn't a placebo.
I have to ask Stu, do you actually have one or tested one?
Just curious.

No but fellow MINI owners have and after looking at their results and lengthy discussion with my mechanic on what it is supposed to achieve and what the problem it is trying to solve, it wasnt really worth worrying about.

The catch can is just attempting to deal with oil 'blow-over'. This can only be an issue if you are overfull or have really pushed the car hard and some of the synthetic oils can foam up a bit due to the detergents in them. We solved that by using Mobil 1 Racing 4T which is bascially the same as the normal Mobil 1 oil but designed for motorbikes. No detergents due to wet clutches.

Setup properly catch cans can do something, but there are plenty of other issues and things to spend your money on first!

Stu

rasp · Jul 30th, 2005, 08:50 PM

Be careful when installing an OCC, mine created massive vacuum problems more noticable when high tuning mods have been carried out...

MiniFr34k · Aug 2nd, 2005, 07:26 AM

Stu, thanks for the info mate

The_Bster · Aug 2nd, 2005, 07:50 AM

Quote: Originally Posted by rasp

Be careful when installing an OCC, mine created massive vacuum problems more noticable when high tuning mods have been carried out...

Rasp, what do you mean by vacuum problems? Similar to turbo lag?

rasp · Aug 2nd, 2005, 04:20 PM

Quote: Originally Posted by The_Bster

Rasp, what do you mean by vacuum problems? Similar to turbo lag?

Something to do with a loss of crankcase vacuum preesure usually caused by the way the pipework hase been re-routed, a small leek would not make hardly any difference to a standard car but to a tuned car as you increase boost so the vacuum leek increases, now add around 100bhp to these cars and you could end up with a high vacuum problem like I did, so the Alta OCC had to come off..Other tuners have had this same problem and have held there sale of OCC's back and only recently a few have put them on the market. I will see if I can get a more technical explanation...

obehave · Aug 2nd, 2005, 05:42 PM

Quote: Originally Posted by rasp

Something to do with a loss of crankcase vacuum preesure usually caused by the way the pipework hase been re-routed, a small leek would not make hardly any difference to a standard car but to a tuned car as you increase boost so the vacuum leek increases, now add around 100bhp to these cars and you could end up with a high vacuum problem like I did, so the Alta OCC had to come off..Other tuners have had this same problem and have held there sale of OCC's back and only recently a few have put them on the market. I will see if I can get a more technical explanation...

Crankcase pressure should always be positive.
Test.
Remove you oil filler cap while the car is running. You can feel the air blowing out of the crankcase. ( Hold a rag over the opening as it could be a bit messy)
A PCV valve opens under vacuum, generally supplied by intake manifold vacuum.
Some of the installations I've seen add several feet of hose and the volume of the can to the line involved in this. A small leak, too large a diameter hose or hose with too weak a wall can all cause a drop in effective vacuum at the PCV valve..
Boost in and of itself cannot cause a vacuum leak but an engine in a higher state of tune may deal with a vacuum leak less well than a stock motor..Very high performance motors usually pull less vacuum at idle due to valve overlap and so are more sensitive to any loss.

In short, don't make the runs too long and don't allow any leaks.

I do fail to see how you could have a high vacuum problem. I have actually never heard of that.

Jul 29th, 2005, 03:24 AM	#1
MiniFr34k fr34king n00b! My Classifieds Join Date: Dec 2004 Location: Sydney Local Time: 05:55 AM Posts: 2,173 Offline	Oil catch can Any of u folks bothered with this in australia? how much did it cost u to get one? link pls? -pete

Jul 29th, 2005, 05:02 AM	#2 (permalink)
StuJones my second passion, a tin! Join Date: Nov 2003 Location: Cronulla, NSW Local Time: 05:55 AM Posts: 733 Offline	I wouldnt worry about it. One of the more useless add-ons in opinion 2002 BRG MCS with more mods than can remember The thieves choice in race cars 2005 BEP MCS stock standard and staying that way

Jul 29th, 2005, 05:29 AM	#3 (permalink)
Amigo . Join Date: Jun 2003 Location: South of the Border Local Time: 06:55 AM Posts: 269 Offline	http://www.northamericanmotoring.com...ighlight=catch Who's on First....

Jul 29th, 2005, 05:18 PM	#6 (permalink)
CoryB MINI2 Regular Join Date: Apr 2004 Location: Chester VA USA Local Time: 03:55 PM Posts: 262 Offline	Quote: Originally Posted by obehave Mine collects oil so I'm thinking it isn't a placebo. I have to ask Stu, do you actually have one or tested one? Just curious. Same here. I guess I'll keep Stu's opinion in mind the next time I'm dumping the sludge out of my OCC. His - 04 CR/W MCS Hers - 05 BEP/W MCS

Jul 29th, 2005, 09:51 PM	#7 (permalink)
StuJones my second passion, a tin! Join Date: Nov 2003 Location: Cronulla, NSW Local Time: 05:55 AM Posts: 733 Offline	Quote: Originally Posted by obehave Mine collects oil so I'm thinking it isn't a placebo. I have to ask Stu, do you actually have one or tested one? Just curious. No but fellow MINI owners have and after looking at their results and lengthy discussion with my mechanic on what it is supposed to achieve and what the problem it is trying to solve, it wasnt really worth worrying about. The catch can is just attempting to deal with oil 'blow-over'. This can only be an issue if you are overfull or have really pushed the car hard and some of the synthetic oils can foam up a bit due to the detergents in them. We solved that by using Mobil 1 Racing 4T which is bascially the same as the normal Mobil 1 oil but designed for motorbikes. No detergents due to wet clutches. Setup properly catch cans can do something, but there are plenty of other issues and things to spend your money on first! Stu 2002 BRG MCS with more mods than can remember The thieves choice in race cars 2005 BEP MCS stock standard and staying that way

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Jul 29th, 2005, 05:53 AM	#4 (permalink)
MiniFr34k fr34king n00b! My Classifieds Join Date: Dec 2004 Location: Sydney Local Time: 05:55 AM Posts: 2,173 Offline	ah thanks btw i try not to read toooo much from NAM, i find theres abit too much biasness at times. Cheers.

Jul 29th, 2005, 12:41 PM	#5 (permalink)
obehave Mini Mod Join Date: Sep 2002 Local Time: 03:55 PM Posts: 9,312 Offline	Mine collects oil so I'm thinking it isn't a placebo. I have to ask Stu, do you actually have one or tested one? Just curious.

Jul 30th, 2005, 08:50 PM	#8 (permalink)
rasp The Mini Family Sponsers Join Date: Aug 2001 Location: Harlow Local Time: 08:55 PM Posts: 1,629 Offline	Be careful when installing an OCC, mine created massive vacuum problems more noticable when high tuning mods have been carried out...

Aug 2nd, 2005, 07:26 AM	#9 (permalink)
MiniFr34k fr34king n00b! My Classifieds Join Date: Dec 2004 Location: Sydney Local Time: 05:55 AM Posts: 2,173 Offline	Stu, thanks for the info mate

Aug 2nd, 2005, 07:50 AM	#10 (permalink)
The_Bster Brrrp Brrrp!!! Join Date: Jul 2004 Local Time: 03:55 AM Posts: 284 Offline	Quote: Originally Posted by rasp Be careful when installing an OCC, mine created massive vacuum problems more noticable when high tuning mods have been carried out... Rasp, what do you mean by vacuum problems? Similar to turbo lag? Mr. Mini Addict ®. "I'm just a mini addict looking for my next fix... ..."

Aug 2nd, 2005, 04:20 PM	#11 (permalink)
rasp The Mini Family Sponsers Join Date: Aug 2001 Location: Harlow Local Time: 08:55 PM Posts: 1,629 Offline	Quote: Originally Posted by The_Bster Rasp, what do you mean by vacuum problems? Similar to turbo lag? Something to do with a loss of crankcase vacuum preesure usually caused by the way the pipework hase been re-routed, a small leek would not make hardly any difference to a standard car but to a tuned car as you increase boost so the vacuum leek increases, now add around 100bhp to these cars and you could end up with a high vacuum problem like I did, so the Alta OCC had to come off..Other tuners have had this same problem and have held there sale of OCC's back and only recently a few have put them on the market. I will see if I can get a more technical explanation...

Aug 2nd, 2005, 05:42 PM	#12 (permalink)
obehave Mini Mod Join Date: Sep 2002 Local Time: 03:55 PM Posts: 9,312 Offline	Quote: Originally Posted by rasp Something to do with a loss of crankcase vacuum preesure usually caused by the way the pipework hase been re-routed, a small leek would not make hardly any difference to a standard car but to a tuned car as you increase boost so the vacuum leek increases, now add around 100bhp to these cars and you could end up with a high vacuum problem like I did, so the Alta OCC had to come off..Other tuners have had this same problem and have held there sale of OCC's back and only recently a few have put them on the market. I will see if I can get a more technical explanation... Crankcase pressure should always be positive. Test. Remove you oil filler cap while the car is running. You can feel the air blowing out of the crankcase. ( Hold a rag over the opening as it could be a bit messy) A PCV valve opens under vacuum, generally supplied by intake manifold vacuum. Some of the installations I've seen add several feet of hose and the volume of the can to the line involved in this. A small leak, too large a diameter hose or hose with too weak a wall can all cause a drop in effective vacuum at the PCV valve.. Boost in and of itself cannot cause a vacuum leak but an engine in a higher state of tune may deal with a vacuum leak less well than a stock motor..Very high performance motors usually pull less vacuum at idle due to valve overlap and so are more sensitive to any loss. In short, don't make the runs too long and don't allow any leaks. I do fail to see how you could have a high vacuum problem. I have actually never heard of that.

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