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Oil filler neck valve
Posted: Sat Sep 12, 2020 10:59 pm
by yoda
Can anyone tell me what this valve / outlet next to the oil filler neck is for? I noticed the rubber bung that seals it had cracked so was going to replace it but wondered what the valve was there for as I hadn’t noticed it before.
Thanks
Oil filler neck valve
Posted: Sun Sep 13, 2020 7:59 am
by hot66
That’s a later tank by the looks of the cap. That is specific for an IB car and Probo part of their oil breather system / vacuum.
Is this your RS spec car ?
Re: Oil filler neck valve
Posted: Sun Sep 13, 2020 9:04 am
by yoda
Hi James. Yes, it’s a 3.2 Carrera neck and cap on my car. I think you are right, there is a vacuum pipe on the 3.2s so presumably this has just been capped off.
Thanks
Re: Oil filler neck valve
Posted: Sun Sep 13, 2020 6:00 pm
by Mick Cliff
Interesting...the rep I once owned had a similar capped off 'thingy'.
Re: Oil filler neck valve
Posted: Sun Sep 13, 2020 7:41 pm
by 911hillclimber
I have a stock 1985 3.2 in my 73T stock 73 tank and all the 3.2 pipes connect to it.
No blanking off plugs etc.
Re: Oil filler neck valve
Posted: Sun Sep 13, 2020 8:17 pm
by yoda
Thanks. Looks like it was for vacuum pipes in a 3.2 application but not needed on an early MFI car.
