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How much venting do I really need? Another catch can question...

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Old 08-06-2013, 05:56 AM
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Default How much venting do I really need? Another catch can question...

Looking at the Go-Autoworks kits... Stuck between the S can kit and the GT Can kit. S can has 2 valve cover vents and a return... GT has 4 valve cover and 2 crank case...

The build is a 600whp d16 with lots of boost... Opinions?

Thank you very much!
Old 08-06-2013, 06:10 AM
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Default Re: How much venting do I really need? Another catch can question...

Run no valve cover at all
Old 08-06-2013, 08:32 AM
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Default Re: How much venting do I really need? Another catch can question...

The D-series cover needs some work in order to vent properly.

The car in the pic made over 700WHP with a simple catch can setup.

http://www.speedfactoryracing.net/wp...kweb/jfk-5.jpg

Last edited by mechanix619; 08-06-2013 at 09:13 AM.
Old 08-06-2013, 09:42 AM
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Default Re: How much venting do I really need? Another catch can question...

I tend to agree with Mechanix619. No need for 4 venting ports here. Just keep it simple like shown above.
Old 08-06-2013, 12:09 PM
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Default Re: How much venting do I really need? Another catch can question...

That is one clean *** engine
Old 08-06-2013, 01:16 PM
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Default Re: How much venting do I really need? Another catch can question...

I really like that picture too, just pointing out that its bigger than the typical lines people run for catch cans. A big line like that would keep the air velocity down. Just wanted to add you would probably need 4x -10 lines to equal the volume of that one.
Old 08-06-2013, 05:46 PM
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Default Re: How much venting do I really need? Another catch can question...

Thanks!
Old 08-06-2013, 06:18 PM
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Default Re: How much venting do I really need? Another catch can question...

i imagine they did one large line like that because with that much volume it would stop the syphoning action that can happen with smaller lines
Old 08-06-2013, 06:54 PM
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Default Re: How much venting do I really need? Another catch can question...

2 off the back of the block... go autoworks sells the plugs with an an6 male fitting machined in and a black box plug

And 2 off the head

Don't drainback as those bypass vapors are horrible for healthy engine oil. Put a filter on the box and then a petcock On the bottom so you can empty the can
Old 08-06-2013, 06:57 PM
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Default Re: How much venting do I really need? Another catch can question...

I hate the ones off the back of the block, they just syphon oil out of the block, stupid *** design, people making these kits need to design anti syphon system. You can use the stock black box in stock location and weld bungs onto that and it vents the crankcase very well and you wont push out into the can.
Old 08-07-2013, 04:18 AM
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Default Re: How much venting do I really need? Another catch can question...

I think the ports on the back of the block will work alright if you just put the can up as high as possible in the bay. I had mine like this, and didn't have any issues. I did notice a little oil in the lines, but that was because the line would dip slighly below the height of the port when exiting the block. Other than that, I wouldn't get anything in the catch can.
Old 08-07-2013, 04:27 AM
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Default Re: How much venting do I really need? Another catch can question...

I have 2 -12an's and it seems sufficent. No baffling in the VC, so anytime the car is launched or I do hits from a lower roll it will pull oil. On a dyno, I get nothing.

Old 08-07-2013, 12:07 PM
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Default Re: How much venting do I really need? Another catch can question...

Lighting, does your system drain back or just have a plug on the can? What set up did you use?
Old 08-07-2013, 09:27 PM
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Default Re: How much venting do I really need? Another catch can question...


I hate the ones off the back of the block, stupid *** design, use the stock black box in stock location and weld bungs onto that and it vents the crankcase very well and you wont push out into the can.

What I just did.....Getting the freeze plug out from the original conversion to block plugs sucked.
Old 08-08-2013, 04:04 AM
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Default Re: How much venting do I really need? Another catch can question...

Originally Posted by DelSolMike
Lighting, does your system drain back or just have a plug on the can? What set up did you use?
No drain back, just collects. Running E85 and drain back is bad news bears

Originally Posted by B and B




What I just did.....Getting the freeze plug out from the original conversion to block plugs sucked.
Off topic, but I hope that fuel pressure regulator isnt only held on to the fuel rail by the fitting
Old 08-08-2013, 05:22 AM
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Default Re: How much venting do I really need? Another catch can question...

I vent off the back of the block using the H22 fittings and a VIS Racing vent can, works very well.
Old 08-08-2013, 06:30 AM
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Default Re: How much venting do I really need? Another catch can question...

Originally Posted by LightningTeg
Off topic, but I hope that fuel pressure regulator isnt only held on to the fuel rail by the fitting
Why?
Old 08-08-2013, 03:51 PM
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Default Re: How much venting do I really need? Another catch can question...

Not mine..I wish...
I was just fronting the pic from the earlier post instead of a link, so everyone could see what the drooling was about.

I'm using the retrofitted stock box now..With BR Fittings small square can.
(which I wish was round, aesthetically)
No Drain...haven't checked to see how much in there yet.
Old 08-09-2013, 02:03 PM
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Default Re: How much venting do I really need? Another catch can question...

For those that don't know, the engine picture is SpeedFactory's D16 car.

SpeedFactory > JFK78's SOHC D16 Monster
Old 08-10-2013, 06:36 AM
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Default Re: How much venting do I really need? Another catch can question...

Originally Posted by spectacle
Why?
Those FPRs arent exactly light. If the fitting is aluminum, id be worried vibration and time could break it.
Old 08-10-2013, 10:42 AM
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Default Re: How much venting do I really need? Another catch can question...

I think I may go with the BWR kit. 2 off the head and 2 off the block. No drain back. Thoughts?
Old 08-10-2013, 05:13 PM
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Default Re: How much venting do I really need? Another catch can question...

Originally Posted by DelSolMike
I think I may go with the BWR kit. 2 off the head and 2 off the block. No drain back. Thoughts?
D's don't have the two back block ports. They only have the OEM catch can hole, which is typically the drain back.


Keep it simple, like in the picture, vent the valve cover and call it a day.
Old 08-11-2013, 08:26 AM
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Default Re: How much venting do I really need? Another catch can question...

Ha. Hense the reason I come here for advice. I'll stick to audio as a profession and let the mechanics do their thing. Stuff beyond electronics, suspension and bolt ons that is...

Thanks everyone!
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