Camshaft Bearings

Side valve, 803, 948, 1098., 1275 and Vizard mods

Postby bmcecosse » Mon May 27, 2013 1:21 pm

You would simply hold the followers up with magnet sticks.... and if they do drop - easy enough to drop the sump (unlike on a Mini installation) to put them back.  I'll be interested to find how you like the cam....what's the spec of the head/carb etc going to be ?
 









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Postby Custard » Mon May 27, 2013 1:44 pm

Head is standard 1275 Midget 12G940.

It had to go in to get a couple of studs removed, was skimmed and the valve seats recut no modifications as such.

At the risk of being shot down in flames, given what I have read on here over the last 18 months I have been on, I have a set of twin 1 and half SU's on a manifold with a nice deep K & N airbox/filter.

They have been in the attic a good few years. When I started driving we just used these off old FWD Austin 1300s as they used to rot and go to the scrapyard and I just cut the minor manifold with a hacksaw and retained the exhaust.

I have got an LCB, not sure of the make, its a damaged one from Vanmorrisone, which I am sure I can weld up and make the system up.

So it is nothing too fancy as I believe too often people end up with an engine that exceeds the cornering ability of the car and the last thing I wanted was a point and squirt car.

Carbs may get changed for a larger single one later, but for now it will have to get the twins on.

Sean.
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Ireland (ie)

Postby bmcecosse » Mon May 27, 2013 3:49 pm

The 1.5" twins will be fine.  However BMC 1300s only had twin 1.25" carbs as standard.....which are too small really.  A single 1.5" SU on a GOOD manifold is better.   If you had fitted the larger inlet valves - I would say use a single 1.75" carb.   An LCB is a bit much for a standardish engine, but use it if you have it. They are really designed to work with longer period camshafts ie BMC 544 or 286 in modern numbers.....
 









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