SL55 AMG, SL63 AMG, SL65 AMG (R230) 2002 - 2011 (2003 US for SL55 and 2004 for the SL65)

SL55/63/65/R230 AMG: 82mm Mercedes TB -- What do I do about PCV?

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Old 08-10-2016, 02:38 AM
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2005 sl55
82mm Mercedes TB -- What do I do about PCV?

Ok so I recently upgraded to the 82mm mercedes TB sold by a vendor on here.

Swapped my pins, everything seems great but there is no provision for the pcv. All there is, is a large diameter (3/8th?) vacuum port, which we capped off.

I ordered a needswings catch can hoping it would bypass my need for the pcv breather, but apparently not.

Any thoughts?
Old 08-12-2016, 02:08 PM
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you can drill the TB and put a barb fitting for the PCV
Old 08-12-2016, 04:32 PM
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Is the vacuum port you mentioned threaded? If so, perhaps you're meant to screw a barbed nipple into it to connect a hose from the output of the catch can.
Old 08-14-2016, 02:32 AM
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Originally Posted by shardul
you can drill the TB and put a barb fitting for the PCV
Thank you for your reply. I wish I had known or thought of the solution you proposed prior to spending a couple hours reinstalling the Supercharger, and just putting fresh gaskets in, lol.

I think what I will do, is just vent to atmosphere after the catch can, and put a filter on the breather port.

Assuming I never drive the car in winter, I should have no risk of freezing/blocking my PCV system, So I think I'll be alright?
Old 08-14-2016, 02:34 AM
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Originally Posted by Noir230
Is the vacuum port you mentioned threaded? If so, perhaps you're meant to screw a barbed nipple into it to connect a hose from the output of the catch can.
it's post throttle body, so it'd be permanent vacuum which as I understand it won't work. The PCV breather needs to connect pre throttle body.

Or does it matter on these motors since we have a second throttle body below?

I am not sure what to think now.

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