That would be either 1/4" or 3/8" BSP.

Hi Guys wonder if you can help. Fitted an electronic ignition control unit from Drags however that works fine but I connot get the Ignition warning light to operate. The wiring is correct, White wire from ignition warning light to SW terminal on coil. Yellow wire from ignition warning light to D ter...

How much for the complete Bach of rings?

Hi Paul trust that you are keeping well thanks for replying. Yes I have the same problem one broken tooth. Being an ex bloody engineer I can’t bring myself round to installing back together with a broken tooth. Can you imagine the objections the brain voices would inflict on me? Fortunately contacti...

Checks the con rods for any sign of damage if OK fit new Sims lock nuts 5/16 BSF and go for it. I would fit new shells just to be on the safe side. The only reason rods go is because the crankshaft oilway traps become blocked. You won't have problems with modern multigrade oils and oil filter. To Be...

So sad to hear of your sad loss, our thoughts are with you God Bles you. Keith

Hi just ordered a set of rings from Cox Tuner £150.00 plus vat and P&P.
Drags have got +020 in stock R6030/20 £84.00 plus vat and P&P. These will fit provided you file off the 0.020 before installing.

Hi Andy yes Paul is spot on. It's an engine complete stripdown, check those crankshaft oilway's and purchase a long series 3/16 dia drill. Run the drill through the oilway's and clean well. If budget will go to it, fit an oil filter kit together with a Morgo pump and club magnetic sump drain plate. ...

Hi Gui so sad to hear about the sq 4, devastating. However some points to check on strip down the Mk11 Morgo has a built in prv. f using the front Mk1 crankshaft make sure you plug off the existing prv built into the front crankshaft. You will have to tap a thread into the shaft I use 5/16BSF and lo...

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Hi Guys wanted Square 4 Mk11 Crankshaft Sprocket Duplex 1944-57 Thanks Keith