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I’d like to start a discussion and gain from the experience of others before rebuilding a 1900 8v for Targa Rallying. For those that don’t know, Targa Rallying is a form of Road Rallying. The events are run in daylight and have off road sections, with a 30MPH average speed, which are timed to the second. Lots of the events are multi-venue, but the road sections are essentially non-competitive, with very relaxed timing. So onto the engine. I’m certainly not looking to build a highly stressed screamer. In fact the regulations don’t allow it. I’m looking for a strong and reliable engine, with the emphasis on torque. The pistons and liners on the donor engine look to be almost new, so the bottom end will be virtually standard. New rings and bearings and a careful rebuild will be the extent of the work. I will be running a 26 tooth sprocket on the oil pump, Richard Longman baffles and a 13 row oil cooler. I also intend using a 1600 flywheel. I have modified a cylinder head following accepted guidelines. I have removed the casting marks on the ports and created a smooth radius on the “short side” radius as the port transitions into the valve guide/throat area. The valves are 3 angle and the guides are phosphor bronze and in good condition. I will have it skimmed to give a compression ratio of 10.5: 1 or 11:1 and have a Piper 270, fast road cam. I realise that this cam receives mixed reviews and probably doesn’t give anything over the standard cam. I have and it’s new so, in it goes. I also have a vernier timing wheel. I have a four branch tubular exhaust manifold and an Ashley exhaust system. I bought the manifold as the standard down pipe is close to the end of its useful life. That’s the background. Now onto the areas that I would like advice with. I may want to go with a different cam in the future - something like a 280 degree duration. I understand that the standard AFM gets a little unsettled with longer duration cams, so I’m considering a bit of future proofing. Targa rally rules restrict you to a maximum of two chokes if moving away from the standard injection. This rules out Webbers and throttle bodies. Another popular mod these days is to go to four bike carbs. I have actually bought a set of Honda Blackbird carbs. I am wondering whether a pair of these 42mm choke carbs would work well with this setup. I believe that it’s been done on Ford Pinto engines as an alternative to a single 45, or split 40’s. It would, of course, require a bespoke manifold. I don’t currently have any plans for an after market ECU, but I’m open to advice. At the moment, I’m thinking of buying an H&H rebuilt and, advance curve modified distributor. Am I on the right lines, or are there better ways of getting a really torquey, 130BHP at the wheels engine. I don’t want to go 16v and a swap to an engine from another manufacturer is also out. I hope that I’ve given enough info on what I’m looking for to keep the discussion focussed. Thanks in anticipation