Lets talk Boost Blowby.. - Ford Mustang Forums : Corral.net Mustang Forum
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post #1 of 20 Old 02-21-2017, 04:59 PM Thread Starter
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Lets talk Boost Blowby..

For the guys that have Catch Cans on their Valve Covers... Lets see your setups!

Do you have any baffling to prevent excessive oil loss into the CC's? Is it even an issue if you're running a MAP Sensor? Shouldn't the engine vacuum keep the oil in under normal driving?

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post #2 of 20 Old 02-21-2017, 11:30 PM
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On a brand new car you will get blow by. Add forced induction and you've increased it just that much more.
As long as you deal with both situations, there are many ways to skin a cat. Both situations such as when under Vacuum & under Positive pressure.

I chose the double check valve PCV (vacuum) & header evac system (boost). Not that it's the best by any stretch. But it deals with both situations with the least amount of parts to fail.

Good luck,


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post #3 of 20 Old 02-22-2017, 08:59 AM
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I went with a standard baffled CC. Have 3/8 hose barbs in the valve covers with hose routed from valve covers to catch can. Also have PCV valve Tee'd into that line. Works fine, never leaks from valve covers or smokes excessively.
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post #4 of 20 Old 02-22-2017, 07:37 PM
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you turbo people should look into

https://www.amazon.com/TEAM-RXP-CATC...c0969bba576fb2


allows proper ventilation, at both high and low manifold pressures....

http://teamrxp.com/

89 GT gr-40, KB2200(10psi), tweecer R/T,LC-1, 22gal cell, w/tailpipes.
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post #5 of 20 Old 02-22-2017, 10:20 PM
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I run a crankcase EVAC system and never looked back.

1989 Saleen 414 358cid SBF 2.8L Kenne Bell S/C
26 X 8.5 Hoosier
Best 1/4 mile time 8.623 @ 159.82 mph with a 1.34 60' (5.57 1/8th at 128)
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post #6 of 20 Old 02-22-2017, 10:42 PM Thread Starter
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Thanks fellas.. I think I will be good running breather cans off each Valve cover since I'll be ditching the MAF for a MAP.

I'll definitely run a PCV Catch Can as well.
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post #7 of 20 Old 02-23-2017, 06:24 AM
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I run about 25 psi or so of boost at 8k RPM and street drive. My manifold is a Super Victor EFI with no place for PCV valve.

I have 7/16 hoses off each valve cover. I use a home made catch can with stainless steel heavy gauge scrubber wool to catch oil. McMaster Carr part 7316T61.

I've had three different engines in and this system worked fine. No issues at all.


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89 LX. 363, single turbo, Super Vic EFI, TFS high port heads by TEA, solid roller, glide. Holley HP EFI. (exact combo varies)
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post #8 of 20 Old 02-23-2017, 09:00 AM
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Quote:
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I run about 25 psi or so of boost at 8k RPM and street drive. My manifold is a Super Victor EFI with no place for PCV valve.

I have 7/16 hoses off each valve cover. I use a home made catch can with stainless steel heavy gauge scrubber wool to catch oil. McMaster Carr part 7316T61.

I've had three different engines in and this system worked fine. No issues at all.
Same here. Homemade can full of stainless scrubber pad and 5/8 hose to a baffled fitting on top of valve cover. I put a drain on the bottom. Can is baffled inside so vapor goes to bottom then up and out through the scrubbers.I get a bit of vapor that comes out but i don't get any accumulation of oil.

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post #9 of 20 Old 02-23-2017, 04:05 PM
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Mine is made from PVC pipe and brass tubing and fittings and is hidden in the fender. The engine lines come in to the brass tubes that run to bottom of a 12" long 2 inch pipe. It filters up through the stainless scrubber pad and vents out a 1 inch vent.

I have a petcock at the bottom. I check it every month or two but it barely has any oil, and nothing ever blows out the vent.

The exception is when a piston cracks. Then it collects oil.


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Same here. Homemade can full of stainless scrubber pad and 5/8 hose to a baffled fitting on top of valve cover. I put a drain on the bottom. Can is baffled inside so vapor goes to bottom then up and out through the scrubbers.I get a bit of vapor that comes out but i don't get any accumulation of oil.



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89 LX. 363, single turbo, Super Vic EFI, TFS high port heads by TEA, solid roller, glide. Holley HP EFI. (exact combo varies)
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post #10 of 20 Old 02-23-2017, 10:33 PM Thread Starter
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The Bud Light heat shield adds 10 horsepower..

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post #11 of 20 Old 02-24-2017, 08:05 AM
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The Bud Light heat shield adds 10 horsepower..
LOL!. That pic is from my old setup. pipe was a bit close to the Rad hose and that pipe gets RED HOT! had it melt once on the dyno but the Bud light can fixed that!

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post #12 of 20 Old 02-24-2017, 09:14 AM
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LOL!. That pic is from my old setup. pipe was a bit close to the Rad hose and that pipe gets RED HOT! had it melt once on the dyno but the Bud light can fixed that!
Coolant hose melted but the plastic zip-ties lived? That pic must be in 'mock up' I would think?? Using stainless bands now?

FWIW, I've found almost exactly what OEM manufactures use for heat shielding. The company is actually called 'Heatshield Products' and this crap works! Buy a roll of their stuff and let your imagination run wild.






1993 Teal Cobra #2531 1 of 452, 347, Precision 7675, The entire kitchen sink....maybe 2 kitchen sinks at this point!
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post #13 of 20 Old 02-24-2017, 03:56 PM
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Coolant hose melted but the plastic zip-ties lived? That pic must be in 'mock up' I would think?? Using stainless bands now?

FWIW, I've found almost exactly what OEM manufactures use for heat shielding. The company is actually called 'Heatshield Products' and this crap works! Buy a roll of their stuff and let your imagination run wild.





That's nice stuff. Thanks for the heads up. My hose got soft enough to push a big bubble out. It was ok after the can even with those zip ties. That set up is long gone now.

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post #14 of 20 Old 02-25-2017, 09:01 AM Thread Starter
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you turbo people should look into

https://www.amazon.com/TEAM-RXP-CATC...c0969bba576fb2


allows proper ventilation, at both high and low manifold pressures....

Teamrxp, rx catch can, ecoboost rx monster can original RX can

It took a little to set in, but something like this might be the ticket! I found a cool little can.https://www.amazon.com/dp/B01JR5UT18...CKQ2C7XI&psc=1 But this is a driver car, and I don't want to be cleaning those little filters on the regular.

I could get an air cleaner spacer and plumb the hoses right at the compressor inlet so the breather system uses the the larger Air Filter. It's a cleaner look too compared to 2 Breather Cans. Thanks for the tip!
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post #15 of 20 Old 02-25-2017, 09:33 AM
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The Bud Light heat shield adds 10 horsepower..
Haha...Love it!!

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post #16 of 20 Old 02-25-2017, 09:44 AM Thread Starter
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That's nice stuff. Thanks for the heads up. My hose got soft enough to push a big bubble out. It was ok after the can even with those zip ties. That set up is long gone now.
Cool man. It looks factory.
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post #17 of 20 Old 03-12-2017, 12:59 AM Thread Starter
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I picked up a McNally. I'm looking forward to having a clean motor. I'm sure it will be good.

Oil Catch Can Only

http://www.mcnallyelectronics.com/as.../TwinTurbo.pdf
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post #18 of 20 Old 03-12-2017, 12:57 PM
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There's just no way I'd put anything preturbo. 7 different reasons why that's a horrible idea.
But I hope it works out for you.

1993 Teal Cobra #2531 1 of 452, 347, Precision 7675, The entire kitchen sink....maybe 2 kitchen sinks at this point!
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post #19 of 20 Old 03-12-2017, 07:41 PM Thread Starter
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If the Can does what it's supposed to do, it will be fine. I won't be running 25 psi of boost.. Ecoboost owners can't be wrong.
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post #20 of 20 Old 03-12-2017, 08:00 PM
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the turbo(s) will see clean air, nothing to worry about

89 GT gr-40, KB2200(10psi), tweecer R/T,LC-1, 22gal cell, w/tailpipes.
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