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Alloy Rocker Cover and breather

Posted: Sat Sep 27, 2014 7:14 pm
by moggiegeek
Having been given an A series alloy rocker cover without a breather take off is it possible to use it and blank off the breather intake to the carb or.... will I end up with oil leaks and oil mist everywhere. The tappet chest vent is present but open ended. Thank you

Re: Alloy Rocker Cover and breather

Posted: Sat Sep 27, 2014 7:43 pm
by bmcecosse
Yes -you will end up with leaks, and oil on the clutch.

Re: Alloy Rocker Cover and breather

Posted: Sat Sep 27, 2014 7:49 pm
by svenedin
You could fit the later tappet chest breather that has an oil condenser and connect that to the carb/air filter and use your rocker cover with no breather. Just make sure you clean out the pipe as a second hand one will almost certainly be blocked. It has wire wool in it and I replaced mine with a stainless steel pot scourer.

[frame]Image[/frame]

Re: Alloy Rocker Cover and breather

Posted: Sat Sep 27, 2014 8:15 pm
by bmcecosse
If you really MUST use the (ghastly - I think) alloy cover - drill and tap it and fit a breather pipe...

Re: Alloy Rocker Cover and breather

Posted: Sat Sep 27, 2014 8:57 pm
by svenedin
I also think they are ghastly. Here's one that's nearly ready to go on my engine. It was a hideous rusty mess covered in silver hammerite.....

Why not just do up the original one if it's tatty?

[frame]Image[/frame]

Re: Alloy Rocker Cover and breather

Posted: Sun Sep 28, 2014 8:08 am
by philthehill
I am so glad that there is such a diversity of opinion on this forum.
What is one mans meat is another mans poison.
I have run with both alloy and standard rocker covers and it comes down to what you like and nothing else; unless
of course you run say 1.5 - 1 rockers then you may have to use an alloy rocker cover so as to allow the rockers to operate without fouling the cover.
See 'e' bay item No: 291250590096 if you want a rocker cover with breathers :D
The attached shows the branded Oselli alloy rocker cover fitted to the Oselli 1400cc engine which was fitted to my Minor at one time.[frame]Image[/frame]

Re: Alloy Rocker Cover and breather

Posted: Sun Sep 28, 2014 12:38 pm
by irmscher
Lovely engine Phil :)

Re: Alloy Rocker Cover and breather

Posted: Sun Sep 28, 2014 1:20 pm
by philthehill
Irmsher
Thanks.
And it produced 115hp at the flywheel.
Still have the block but the other parts have either been incorporated in my current 1380cc or sold on.
Phil