31-01-2020, 01:26 PM
Been following this sand another thread on alloy Heads
I remember that sometime in the late '80's the A7CA magazine ran a couple of features on alloy heads.
Over the years I've run two types of Speedex heads -the earlier one on an RP saloon and the other on a Speedex special - both worked OK but both were on 'road' cars.
Currently on my shelf I have an ALTA head dated 1931 which has steel inserts converting it to 14mm plugs
And a Supalloy H/C one.- might fit this one to the RP.
Another one I have is a bit of a mystery to me:
Back in the mists of time I acquired ( I seem to recall from Simon College) a PARAMOUNT alloy head which appears to be a low compression head -exactly as a chummy type with pear shape water outlet and early pattern combustion chambers. It has, however, 14mm plug threads so probably post war. Anyone know anything about these Paramount heads -do many exist and what/why/ when etc?
I remember that sometime in the late '80's the A7CA magazine ran a couple of features on alloy heads.
Over the years I've run two types of Speedex heads -the earlier one on an RP saloon and the other on a Speedex special - both worked OK but both were on 'road' cars.
Currently on my shelf I have an ALTA head dated 1931 which has steel inserts converting it to 14mm plugs
And a Supalloy H/C one.- might fit this one to the RP.
Another one I have is a bit of a mystery to me:
Back in the mists of time I acquired ( I seem to recall from Simon College) a PARAMOUNT alloy head which appears to be a low compression head -exactly as a chummy type with pear shape water outlet and early pattern combustion chambers. It has, however, 14mm plug threads so probably post war. Anyone know anything about these Paramount heads -do many exist and what/why/ when etc?