New member and new owner! I've a late mk2 1098. The engines only about 100 miles run in after a rebuild by the previous owner. It has a 295 spec head, a minisport inlet manifold, pancake air filter and a 3 branch tubular exhaust manifold with a 2" approx exhaust. Otherwise stock (well apart from an alternator conversion and accuspark ignition). The car starts on the button and idles well but on the move it can hesitate and pop back through the carb. Even when it runs well under load it always feels like it's holding its best back.
Fuel starvation I thought. So today I've replaced the SU type electric fuel pump with a Facit solid state fuel pump and installed an inline filter to keep an eye on things. The end result? The bloody same! The car is being run on 99 octane. Next job is to recipe the car along it's length as its on 6mm copper at the minute to just before the carb which seems a bit small to me. So I'll redo it in 8mm. If the same problem persists then I'm at the carb.
What do you think? I'm new to pre 1980 cars and if anyone thinks I'm barking up the wrong tree any guidance would be much appreciated
