In reply to a post by 7mg2 Ethanol, America's strategy for reducing dependence on foreign oil. And you can go a long way before any deterioration becomes significant. I don't want to spend more than I can sell the car for. Not a big deal with SUs but ZS it would be as they have a rubber inside. Dropped in a new valve gave it a 10 second lap and it was perfect. 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. I've seen so many heads crack under badly burnt valves that to find an easy survivor was a real plus.
MG MGA Timing & unleaded fuel BBS discussion at MG-Cars.net
The permanent solution is now possible on all British sports cars. The additive called, appropriately enough, Relead, does exactly what it says it does: This was an effective modification when full strength leaded fuel was available. I dont personally believe any of the Midget engines were designed for unleaded. First of all, the "lead" increased the octane rating of the fuel. These guides can seize if not reamed to provide adequate clearance, particularly on the exhaust side.
Chicagoland MG Club:Tech Tips
When unleaded was introduced here, the Valvemaster blurb basically said "no". Relead is relatively inexpensive and a little bit goes a long way - 8 ounces will treat 80 gallons of gasoline. How long does it take for a valve seat to burn? Ok, taking some advice on hand I am going to leave it as is and replace when its due.
MG MGB Technical Unleaded cylinder head? BBS discussion at MG-Cars.info
Description: So as I understand it fully does that mean 1 I just need to make sure I have the TDC mark, and the other marks I can ignore as they wont be used 2 and that the real advantage comes as I can accurately find 32 degrees BTDC at high revs? But if you want performance, then get the car set-up for the fuel of your choice and stick to it. Browse cars for sale. The process actually occurs when iron oxides form on the edge of the valve face. I set my timing as Bob describes above.