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View Full Version : what is this on my rb25?

DailyDrivenS14
03-12-2012, 01:58 PM
I have a "tube" on the head that runs down to the block. Its on the drivers side of the head a bit in front of cylinder one and runs down to the block. Is it some kind of p cv plumbing?
In the picture it is removed but you see the passage in the head where it would ultimately bolt on.
https://lh5.googleusercontent.com/-0HWrt_FwSGk/T15WVzHXgnI/AAAAAAAAAmQ/jAmT2r4NDAY/s400/IMAG0979.jpg
Pro ViZIon
03-12-2012, 02:48 PM
It's probably a breather for the engine oil like any other motor. Just judging from the photo.

Where exactly does the tube lead?
DailyDrivenS14
03-12-2012, 08:32 PM
ok i will try to get a picture of where it ends on the block...
twinspool
03-12-2012, 08:46 PM
Yes more pics and larger ones as well
Spencer dougherty
03-13-2012, 12:41 AM
its the oil drain tube for the head...
DailyDrivenS14
03-13-2012, 08:29 AM
Perfect, thank u all for the responses
4x4le
03-13-2012, 12:24 PM
Hey are you the guy that I talked to yesterday on the phone? I never got a text from you with your email address but Ill pm you the info I was going to.
Detroit.Tee.Tee
03-17-2012, 07:18 PM
AFAIK, it's not a head drain. It's the drain for the NVCS. When the solenoid opens, the oil that gets pumped into the Intake cam to retard it needs to drain somewhere.

http://i672.photobucket.com/albums/vv86/carmextwo/OilReturn.jpg

I didn't have mine either. I found one though.