I welcome any inspection on my Midgets before you buy and if you are unhappy with the car for any reason after purchase I do offer a 14 day refund policy. Even in the subaru of Bernie's friend a fuel of the same octane rating as the one it has been set up on will make it run just as well. In the late 's Rover set up a company called British Motor Heritage, who found all the original tooling used by MG and now produce a wide range of sub assemblies, body panels and components including full body shells. Given that the casting of the head is relatively soft I would suggest for these motors to run with long term reliability on unleaded fuel that the exhaust valve seats are replaced as a matter of course at a one off cost. Jun 20, I bought it ALL, about 12 bottles!
MG MGA Timing & unleaded fuel BBS discussion at MG-Cars.net
Around town, therefore, your engine will suffer slowly but if you go on long trips with sustained high cruising rpm, your valve seats are in jeopardy! If the distributor has too much, too little or just inappropriate advance, then all the other careful checking is a waste of time. I must admit to using Castrol Valvemaster, not so much for it's lead replacement properties but the increase in octane rating. Where base circle run-out is present, I measure where the ramp ends relative to the full lift position and work out a setting to use for the rule-of-nine method, as it makes adjustment much easier if you can easily identify where it should be done. Underneath of RE a stunning Frogeye currently in stock. Avoid the 'magic' solutions involving lead pellets, magnets, It can't go forever because, as the seat is eroded, compression is lost, the valves no longer open and close properly because of adjustment changes, and so on.
mgb unleaded | eBay
A drop or three of your "supplement of choice" seems a good insurance, every three tankfuls. The permanent solution is now possible on all British sports cars. I picked up a spare head, in a salvage yard, back in the early '80s and had this work performed to it. I tend to alternate refuels between standard unleaded 85 octane and super unleaded 98 purely on a cost basis. Around town, therefore, your engine will suffer slowly but if you go on long trips with sustained high cruising rpm, your valve seats are in jeopardy!
Description: I always think a Spring time service is a good idea as it prepares the car for Summer use. Using unleaded fuel in the MGB Unleaded vs. One owner has replied that he has always run the car on unleaded with no problems but it has not had any conversion. Thanks for the replies guys. This was an effective modification when full strength leaded fuel was available.