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View Full Version : SR20DET crankcase ventilation fitting


Nikzilla
07-17-2014, 08:46 PM
So I'm getting a catch can, and I want to convert all my ventilation lines to AN braided hose so that they don't burn up.

From what I read, you can just pull the valve cover Tee out (it's an s13 blacktop) and run a 3/8 NPT tap through it.

But what about the hose that goes into the block? If I remember correctly from when I did my rebuild, it's a nipple fitting pipe, that goes into the block underneath the head. You can't remove it without taking the head off. Also, tapping it would be extremely risky since it's a channel in the block that goes down to the oil pan. If I tapped it I would have to separate the head, block, and oil pans.

I've seen pictures before with people running an AN hose to down there behind the manifold, but I never could figure out how they did it.

What about cutting the nipple off the fitting, flaring it, and using a flare fitting?

Nikzilla
07-17-2014, 08:56 PM
This is the fitting I am talking about btw.

http://www.nissansilvia.com/forums/uploads/monthly_11_2011/post-78416-0-81917000-1322032269_thumb.png

Nikzilla
07-18-2014, 01:18 PM
Sigh. Doed anyone at least know what size the hose is?

ultimateirving
07-18-2014, 01:59 PM
Weld on a fitting ?

Nikzilla
07-18-2014, 02:17 PM
Can I do that without splitting it?

ultimateirving
07-18-2014, 02:37 PM
Can I do that without splitting it?

I haven't tried but I thought that was what people did to convert it. Depends on if you can get a welder in that area. Is the engine in the car still ?

Nikzilla
07-18-2014, 02:38 PM
Yeah but I'm gunna be pulling it soon to swap my tranny. I can't weld yet. I outsource my welding to a local machinist.

5t341tH
01-25-2021, 08:35 PM
hey wanted to bump this up. So what are people doing at this piece? I have a AN fitting on the valve cover side and the other end just slips over the pipe. Just wanted to see if there's a nicer solution


EDIT: I see these pieces available but they require removing the head to install
https://www.mazworx.com/resize/Shared/Images/Product/SR20-Breather-Adapter-8AN-ORB/11385-8AN-2.jpg?bw=1000&w=1000&bh=1000&h=1000
https://scontent-lax3-1.xx.fbcdn.net/v/t45.5328-4/p960x960/20862840_1315820435213035_7902485846043918336_n.jp g?_nc_cat=110&ccb=2&_nc_sid=c48759&_nc_ohc=CHHFWdfBnF0AX-x2BDO&_nc_ht=scontent-lax3-1.xx&tp=6&oh=95703c3659eef36b545da3adeb9fa31e&oe=60356A56

240boosted
05-29-2021, 08:58 PM
I getting my car setup and I using the Mazworx part and let me tell you I love it