Fitting and removal of rivet The plates were held on by a Hammer Drive Screw — that is to say a screw that is fitted by using a hammer into an interference-fit hole. They are threaded, although the block is not. If you want to remove, do not chisel off and hope to drill out […]
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Posts in Engine
Gold and Silver seal and other Replacement A series Mini engines available from BMC/Leyland & Rover. These are not the original production line numbers as usually found in log books at original point of sale on new cars but factory replacement engine numbers that could have been fitted to your Mini. These are all the […]
A PLUS CAMSHAFT MARKINGS 1-ring between 5&6 lobes probably 998 HC & 1275cc Metro CAM4717 2-ring between 3&4 lobes 998cc LC CAM6267 2-ring between 7&8 lobes LGC10231– 12775cc HIF38 and injected Auto 3-ring between 7&8 lobes LGC10230-SPI ¼” machined groove between 1&2 lobes CAM 6648 MG METRO &1275 HIF4 No markings 12G2983 when 1275cc Metro etc No […]
Most engines by now have had new timing chains or gears fitted. If you have single row type chain with tensioner and the gears are not worn then Mini Spares suggests you buy the 3H2127EVO “less stretch chain” as the extra cost covers the hassle of having to replace it again and some performance engine builders […]
ENGINE BORE AND STROKES by Keith Dodd Capacity 803cc with bore size 58.0mm and stroke 76.2mm for A30 in 1952 Capacity 848cc with bore size 62.9mm and stroke 68.26mm for mini 1959. same stroke as 1070cc Cooper S Capacity 948cc with bore size 62.9mm and stroke 76.2mm for A35 in 1956. plus 60 thou overbore is approx 998cc as the stroke […]
Weslake Rocker cover plate. UK Patents listed on CP350 identification plate. Weslake 565-394 improvement to combustion chambers for internal combustion engine. Applied in July 12th1943 and granted November 8th 1944 610-114 improvement in or relating to induction system for internal combustion engine. Applied in march1946 and granted October 12th 1948 Austin and Morris 922-452 Morris Motors ltd improvement […]
On the A plus engines Rover upgraded some of the gaskets to eradicate the dominant oil leaks such as the timing cover but by 1995 they started using some red and black coloured Klinger gaskets to overcome warranty driven oil leaks that was costing them money in repairs. A lot more expensive but the extra […]
I frequently hear the phrase “big-bore engines tend to be unreliable long-term because of head gasket problems”. Which is complete rubbish, even when non-Payen head gaskets are used.These big-bore engines can be supremely reliable – providing the are machined and built correctly in the first place. Something that continually astonishes me doesn’t happen even when […]
The correct running temperature of the oil is perhaps even more important than the water/coolant temperatures – so let us consider how to control them.Mainly because it seems to be the most misunderstood of the whole process, and oil cooler fitment almost a reflex when over-heating occurs where a tuned engine of any type is […]
It’s criminal. Folk spend fortunes putting together super-sonic motors, only to skimp on the oil they use. Why? Oil’s oil right? Wrong. Even if it’s a standard engine, it deserves TLC considering it’s extremely hostile working environment.Oil is literally the engine’s life-blood. The opening few sentences are astonishingly true. Oil isn’t there just to prevent […]