02-04-2021, 12:21 PM | #1 |
Drives: 2016 Camaro 2SS Join Date: Apr 2017
Location: Stansbury Park, Utah
Posts: 1,087
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MM Wild - garage/car smells like gas 'n oil - Help
After switching to the MM Wild setup, I've noticed my garage smells like gas/oil. Even sometimes while driving getting into boost I can smell it through the A/C vents. I never had that smell with the old sealed Mishimoto catch can setup.
I'm thinking, venting into the atmosphere may be good to relief crankcase pressure, but it sure stinks like hell. Since I'm only at maybe 10-11 psi of boost and have the LS3 front seal, I'm going to remove it. Can the rear seal handle 10-11psi of boost? Is there another option to vent crankcase pressure (not into the atmosphere)? I don't do long pulls, maybe 10 secs at a time. thanks in advance
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2016 2SS, MRC, NPP, A8. Procharger P-1X,Stage II,std bypass, 3.9, Alky Meth - 10.84 @129 - DA+2000
New Mods - GPI drop ins, Kooks 2", LT4 fueling, Cam, Circle D Converter, 3.5 pulley & dual nozzle meth. |
02-04-2021, 12:47 PM | #2 |
Drives: G8 Join Date: Mar 2012
Location: NJ
Posts: 251
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I use the MM vented setup and noticed the same thing.
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02-04-2021, 12:48 PM | #3 |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 4,703
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That doesn't sound right. I've got the MM Wild and have no fumes at all. I believe it's only supposed to vent under positive crankcase pressure. Perhaps you have a defective check valve in the can? I'd reach out to MM.
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2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors, LPE BB HPFP, 15” conversion 1059 WHP/944 WTQ, 9.48@150
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02-04-2021, 12:52 PM | #4 |
Drives: 2016 Camaro 2SS Join Date: Apr 2017
Location: Stansbury Park, Utah
Posts: 1,087
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There's no check valve on the side from the valve cover to the can. So the fumes have a straight shot from the valve cover into the can and then out the breather on top of the can. Right?
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2016 2SS, MRC, NPP, A8. Procharger P-1X,Stage II,std bypass, 3.9, Alky Meth - 10.84 @129 - DA+2000
New Mods - GPI drop ins, Kooks 2", LT4 fueling, Cam, Circle D Converter, 3.5 pulley & dual nozzle meth. |
02-04-2021, 01:07 PM | #5 |
Drives: 2016 Camaro 2SS Join Date: Apr 2018
Location: Central Texas
Posts: 1,011
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I too have noticed that smell.
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02-04-2021, 05:46 PM | #6 |
Drives: 2018 Camaro SS Join Date: Sep 2009
Location: Oklahoma
Posts: 239
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I’m gonna buy his 12 AN top and run a hose out of the compartment. It’s is absolutely horrible when driving with the windows up.
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02-04-2021, 06:12 PM | #7 | |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 4,703
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Quote:
I went out of my way to have this discussion with MM before I bought it since my engine bay is immaculate, and have a white supercharger to boot. He assured me it wouldn’t make a mess and to date he’s been 100% right. Seems silly to ask, but you’re sure it’s hooked up right?
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2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors, LPE BB HPFP, 15” conversion 1059 WHP/944 WTQ, 9.48@150
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02-04-2021, 07:05 PM | #8 |
Drives: 2016 Camaro 2SS Join Date: Apr 2017
Location: Stansbury Park, Utah
Posts: 1,087
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I routed it this way: Thanks to Dysan911.
Yeah so using the photo as an example. Cap the lower valley port off and then connect the upper hose like it's shown in the photo. Instead of it going into the valley port It will connect to the one side of the MMS Catch can that has the built in PCV (checkvalve) on it. The other side of the can will connect to the adapter that replaces your Oil cap. Intake--->ProchargerHexManifold---->MMSCatchCan_PCV--->ValveCoverOilCap_Adapter.
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2016 2SS, MRC, NPP, A8. Procharger P-1X,Stage II,std bypass, 3.9, Alky Meth - 10.84 @129 - DA+2000
New Mods - GPI drop ins, Kooks 2", LT4 fueling, Cam, Circle D Converter, 3.5 pulley & dual nozzle meth. Last edited by grampa_ss; 02-04-2021 at 07:28 PM. |
02-04-2021, 07:19 PM | #9 |
Drives: 2016 Camaro 2SS Join Date: Apr 2017
Location: Stansbury Park, Utah
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I just went and looked at it again. I pulled off the breather and looked up into it.
There a round black piece of rubber that seems to float and acts as a seal if under vacuum and will be pushed up to allow venting if under boost. I smelled the catch can when I took off the breather. That's exactly what I smell in my garage and in my car when gunnin' it. You definitely need to make sure you press the breather on all the way 'till it clicks. That being said.....still....when under boost, it's going to vent into the engine bay and you're going to smell it. Question is...can we route/vent this back into the engine somewhere? I think Elite Engineerings E2 can does this.
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2016 2SS, MRC, NPP, A8. Procharger P-1X,Stage II,std bypass, 3.9, Alky Meth - 10.84 @129 - DA+2000
New Mods - GPI drop ins, Kooks 2", LT4 fueling, Cam, Circle D Converter, 3.5 pulley & dual nozzle meth. Last edited by grampa_ss; 02-04-2021 at 07:47 PM. |
02-04-2021, 10:34 PM | #10 |
Drives: 2016 Camaro SS Join Date: Jan 2019
Location: Florida
Posts: 305
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Pretty sure MM offers an option that replaces the breather with a barb so it can be routed back in. I forget if the top is removable so it might require a new can altogether.
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2016 Gloss Black Camaro 1SS, A8, MRC, 6-Piston BBK
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02-04-2021, 10:55 PM | #11 |
Dumb Ass Deluxe
Drives: A Tricked Out Mountain Bike Join Date: Jun 2019
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Why not hook a hose (steel braid?) to the top of the can, run it down by the tranny and pop the filter in the end?
All the fumes will blow under the car as your cruising. Might still have the smell in the garage though.
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02-04-2021, 11:13 PM | #12 | |
Drives: 2016 Camaro 2SS Join Date: Apr 2017
Location: Stansbury Park, Utah
Posts: 1,087
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Quote:
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2016 2SS, MRC, NPP, A8. Procharger P-1X,Stage II,std bypass, 3.9, Alky Meth - 10.84 @129 - DA+2000
New Mods - GPI drop ins, Kooks 2", LT4 fueling, Cam, Circle D Converter, 3.5 pulley & dual nozzle meth. |
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02-04-2021, 11:28 PM | #13 |
Drives: 2016 Camaro 2SS Join Date: Apr 2017
Location: Stansbury Park, Utah
Posts: 1,087
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Exactly. This is an option though. Thanks
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2016 2SS, MRC, NPP, A8. Procharger P-1X,Stage II,std bypass, 3.9, Alky Meth - 10.84 @129 - DA+2000
New Mods - GPI drop ins, Kooks 2", LT4 fueling, Cam, Circle D Converter, 3.5 pulley & dual nozzle meth. |
02-05-2021, 03:18 AM | #14 |
Former GM Technician
Drives: 2018 ZL1 A10, 06 Silverado Duramax Join Date: Sep 2009
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