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Alloy Rocker Cover
Posted: Fri Apr 11, 2008 6:52 pm
by rio678
Hi everyone
do you know where i can get an alloy rocker cover or my Moggie with a breather tube as i can't see any that has got them, they all seem to not have the breather!
Posted: Sat Apr 12, 2008 9:02 pm
by bmcecosse
It was only used on the MG Mutro - which had no rocker breather. Just use the standard cover with breather - the alloy cover is not correct on a Minor, and can increase valve gear noise !
Posted: Sat Apr 12, 2008 11:21 pm
by PAULJ
Im sure I've seen an alloy cover on a 1275 with a home made breather mounted where the mechanical fuel pump mounted.
It was a tube up the side of the block
Posted: Sun Apr 13, 2008 8:55 am
by bmcecosse
Indeed - extra breathing can be fitted there - but it's low down on the block and liable to collect oil! As long as some form of collector/oil trap is included, it works fine. The breather on the rocker cover is ideal for removing water vapour from the coldest part of the engine - remove it at your peril!
Posted: Tue Apr 15, 2008 12:44 pm
by Kevin
the alloy cover is not correct on a Minor, and can increase valve gear noise !
Hmm that's interesting as I was always told the Alloy ones are quieter as they are made from a softer thicker material and hence will quieten things down a little not make them noisier.
Posted: Tue Apr 15, 2008 9:42 pm
by bmcecosse
They tend to resonate - being rigid Aluminium.
Posted: Wed Apr 16, 2008 7:09 am
by Kevin
They tend to resonate
Oh well that's another piece of folklore exposed.
Posted: Wed Apr 16, 2008 9:04 am
by bmcecosse
Some also have trubble with the rockers banging against the cover - but usually that's just with high lift cam and/or high ratio rockers - although it can just be wrongly positioned rocker cover!