home made catch can

wraitherx · August 15th, 2009, 01:49 PM

and you dont need vacuum to have the oil get into the catch can. The crankcase pressure is basically gonna push that stuff out into the can

flattusmaximus78 · August 15th, 2009, 03:27 PM

But the one line from the catch can to the filler neck vac hole is enough?

wraitherx · August 15th, 2009, 04:42 PM

yeah but if your gonna do it you might as well do it right and do the PCV as well.

flattusmaximus78 · August 15th, 2009, 05:09 PM

no issues with that. Would it go into the lower intake or the upper intake and block off either or. Or could I run a "t".

And I'm guessing if I run the catch can to the pcv I could do a breather on the valve cover?

wraitherx · August 15th, 2009, 05:25 PM

you can "T" it off. basically what you wil have is a length of hose connected to the PCV on the back of the lower manifold, a length of house connected to your filler neck, these 2 hoses will connect to the "T" connection, then a line will come from the "T" and lead into the catch can

flattusmaximus78 · August 15th, 2009, 06:22 PM

Sounds good. I appreciate it. since the pcv isn't going to the upper intake anymore what is best used to block it off?

wraitherx · August 15th, 2009, 09:10 PM

to block off the connection on the bottom of the upper intake manifold go to your local auto parts store and purchase a cap set. The PCV valve is going to be left in place and the only thing different is that it is going to have tubing leading directly into the catch can.

MustangMatt96GT · August 16th, 2009, 12:33 AM

Might be a stupid question, but why can you not just use breathers? Thats what I have on my race car... I have never played with boost though.

wraitherx · August 16th, 2009, 12:59 AM

Originally Posted by MustangMatt96GT

Might be a stupid question, but why can you not just use breathers? Thats what I have on my race car... I have never played with boost though.

you can use breathers if you want. if you read my other posts there are a couple disadvantages to them, mostly that they tend to let smoke enter into the cabin since they are vented directly to the atmosphere but that all depends on the condition of your engine. another thing is that at times the breathers may get oil soaked dripping oil onto your valve covers. other then that there is nothing wrong with using them.

flattusmaximus78 · August 19th, 2009, 12:30 AM

I Did some more thinking. The pcv is technically connected to the line comming off the upper intake. Do I cut the hose... stuff it in the lower intake, and plumb a hose from the pcv to the catch can? Then I block off the upper intake.

Cause the key is to still run the pcv even off the catch can correct?

wraitherx · August 19th, 2009, 10:35 AM

just block of the upper intake connection completely then have a line going from the PCV to the catch can

flattusmaximus78 · August 19th, 2009, 11:17 AM

I know, but should I just use the pcv hose that came off the upper. Cut it from the upper, put it in the lower, and connect it to the "t".

JBIGBOOTSY · August 20th, 2009, 09:07 AM

Use the old exhaust breather kit?
HEADERS CRANK CASE EVACUATION SYSTEM RACE CAR DRAG RACE:eBay Motors (item 350238004971 end time Sep-08-09 08:26:39 PDT)

August 15th, 2009, 01:49 PM	#21
wraitherx Moderator '99 SVT Cobra Join Date: Nov 2006 Location: Virginia Beach, VA Posts: 9,568 iTrader: 11 reviews	and you dont need vacuum to have the oil get into the catch can. The crankcase pressure is basically gonna push that stuff out into the can __________________ BUILD 2 IN PROGRESS

August 15th, 2009, 03:27 PM	#22
flattusmaximus78 I Post Entirely Way Too Much 1993 5.ohhhh 12.97 @140mph Join Date: Apr 2006 Location: Gatorland Posts: 6,122 iTrader: 3 reviews	But the one line from the catch can to the filler neck vac hole is enough? __________________ 02 Pewter z28, hoosiers/lid/exhaust/spray...125mph 1993 gt Sold, already missed --Moates Quarter horse $225-- --Cobra intake $150-- --tremec 3550 bell and shifter $1100--

August 15th, 2009, 04:42 PM	#23
wraitherx Moderator '99 SVT Cobra Join Date: Nov 2006 Location: Virginia Beach, VA Posts: 9,568 iTrader: 11 reviews	yeah but if your gonna do it you might as well do it right and do the PCV as well. __________________ BUILD 2 IN PROGRESS

August 15th, 2009, 05:09 PM	#24
flattusmaximus78 I Post Entirely Way Too Much 1993 5.ohhhh 12.97 @140mph Join Date: Apr 2006 Location: Gatorland Posts: 6,122 iTrader: 3 reviews	no issues with that. Would it go into the lower intake or the upper intake and block off either or. Or could I run a "t". And I'm guessing if I run the catch can to the pcv I could do a breather on the valve cover? __________________ 02 Pewter z28, hoosiers/lid/exhaust/spray...125mph 1993 gt Sold, already missed --Moates Quarter horse $225-- --Cobra intake $150-- --tremec 3550 bell and shifter $1100--

August 15th, 2009, 05:25 PM	#25
wraitherx Moderator '99 SVT Cobra Join Date: Nov 2006 Location: Virginia Beach, VA Posts: 9,568 iTrader: 11 reviews	you can "T" it off. basically what you wil have is a length of hose connected to the PCV on the back of the lower manifold, a length of house connected to your filler neck, these 2 hoses will connect to the "T" connection, then a line will come from the "T" and lead into the catch can __________________ BUILD 2 IN PROGRESS

August 15th, 2009, 06:22 PM	#26
flattusmaximus78 I Post Entirely Way Too Much 1993 5.ohhhh 12.97 @140mph Join Date: Apr 2006 Location: Gatorland Posts: 6,122 iTrader: 3 reviews	Sounds good. I appreciate it. since the pcv isn't going to the upper intake anymore what is best used to block it off? __________________ 02 Pewter z28, hoosiers/lid/exhaust/spray...125mph 1993 gt Sold, already missed --Moates Quarter horse $225-- --Cobra intake $150-- --tremec 3550 bell and shifter $1100--

August 15th, 2009, 09:10 PM	#27
wraitherx Moderator '99 SVT Cobra Join Date: Nov 2006 Location: Virginia Beach, VA Posts: 9,568 iTrader: 11 reviews	to block off the connection on the bottom of the upper intake manifold go to your local auto parts store and purchase a cap set. The PCV valve is going to be left in place and the only thing different is that it is going to have tubing leading directly into the catch can. __________________ BUILD 2 IN PROGRESS

August 16th, 2009, 12:33 AM	#28
MustangMatt96GT Proud American 1996 Mustang GT Join Date: Dec 2006 Location: Lakewood, CO Posts: 10,689 iTrader: 3 reviews	Might be a stupid question, but why can you not just use breathers? Thats what I have on my race car... I have never played with boost though. __________________ RIP Travis Billings Special Thanks to: Andrews Racing Transmissions Baseline Suspensions 25.3 SFI Chassis Build Never Lift Racecars

August 19th, 2009, 12:30 AM	#30
flattusmaximus78 I Post Entirely Way Too Much 1993 5.ohhhh 12.97 @140mph Join Date: Apr 2006 Location: Gatorland Posts: 6,122 iTrader: 3 reviews	I Did some more thinking. The pcv is technically connected to the line comming off the upper intake. Do I cut the hose... stuff it in the lower intake, and plumb a hose from the pcv to the catch can? Then I block off the upper intake. Cause the key is to still run the pcv even off the catch can correct? __________________ 02 Pewter z28, hoosiers/lid/exhaust/spray...125mph 1993 gt Sold, already missed --Moates Quarter horse $225-- --Cobra intake $150-- --tremec 3550 bell and shifter $1100--

August 19th, 2009, 10:35 AM	#31
wraitherx Moderator '99 SVT Cobra Join Date: Nov 2006 Location: Virginia Beach, VA Posts: 9,568 iTrader: 11 reviews	just block of the upper intake connection completely then have a line going from the PCV to the catch can __________________ BUILD 2 IN PROGRESS

August 19th, 2009, 11:17 AM	#32
flattusmaximus78 I Post Entirely Way Too Much 1993 5.ohhhh 12.97 @140mph Join Date: Apr 2006 Location: Gatorland Posts: 6,122 iTrader: 3 reviews	I know, but should I just use the pcv hose that came off the upper. Cut it from the upper, put it in the lower, and connect it to the "t". __________________ 02 Pewter z28, hoosiers/lid/exhaust/spray...125mph 1993 gt Sold, already missed --Moates Quarter horse $225-- --Cobra intake $150-- --tremec 3550 bell and shifter $1100--

August 20th, 2009, 09:07 AM	#33
JBIGBOOTSY MM Fanatic 1990 LX hatch Join Date: Aug 2006 Location: Hobart Indiana Posts: 4,391 iTrader: 0 reviews	Use the old exhaust breather kit? HEADERS CRANK CASE EVACUATION SYSTEM RACE CAR DRAG RACE:eBay Motors (item 350238004971 end time Sep-08-09 08:26:39 PDT) __________________ Bolt-on Abraham Lincoln Log motor. With extra wiring.

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