Cylinder heads-

[djj_engineer]

MGB/1800 complete with valve gear
Duplex camshaft drive chain wheels
Rover V8 heads complete with valve gear
And more call me before it all goes to the scrapyard.
Also MGB O/d Gearbox
All to be scrapped 2nd week in Jan 2014

Now the 3rd week in Jan So all scrapped.

[stevejgreen]

Re: Cylinder heads-

Perhaps we are too late.
The duplex camshaft drive chain wheels, especially if the chain and tensioner are included, are a rapid upgrade as it all fits under the standard Marina timing chain cover.
I have rarely heard of a simplex Marina timing chain failing, but if you have plans to change the cam with a higher lift one, the load on the chain increases.
Having said that with a new cam I would always fit an adjustable sprocket to get the particular cam set spot on.