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[quote="RFlower"]The Imola on which I changed camshafts and installed all new tappets was sadly written off shortly afterwards. All wheels, tyres, and suspension were irreparably damaged, body slightly twisted, but I have kept it for the engine and other parts. The engine has done 140,000km (nearly 90,000 miles)

The Trofeo I now have had less than 80,000 km (50,000 miles) from new when I bought it. I changed all fluids, and belts, and have done almost exactly 10,000 km in the year since then.

The tappets still make no sound whatsoever. The loudest sound from the engine with the bonnet open is the hiss of the induction.

I fitted the same oil pressure gauge and sender I had on the Imola, in the same position, on the main gallery on top of the engine. At 130 km/hr (81mph) on the motorway, the oil pressure is 80psi, compared with 40 psi at best on the Imola.

The Imola tappets clicked slightly when I bought it, but I waited until they were quite noisy before I pulled the heads to look at them, and then wished I had done so earlier, as by then I had to find 2 camshafts, which are not so easily come by as tappets.

I now know that the tappets should make no noise at all. They were totally silent on the Imola after the engine rebuild, but with half the oil pressure of the Trofeo I wonder how long they would have lasted?

I guess that if correct oil changes have not been done, there will be a lot more damage than immediately evident from noisy tappets etc., such as severe wear of the oil pump.

Incidentally, the (non-hydraulic) tappets on the Sprint are, and have always been, completely silent. I have owned it since it was 3 years old, it had been clocked when I bought it in Spain, sdo I don't know the mileage, but I have done only 80,000km since then. The oil pressure on the installed gauge runs at 40psi, a bit lower when it is thrashed.[/quote]

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