Is it worth re-building an old GSX-R1100?
Gareth Hall, 54, has 25 years handson experience with Redcar Suzuki
“We are seeing more and more
late 80s and early 90s GSX-R1100S projects. Spares availability is good, although some bodywork, seats and exhausts are discontinued.
“It’s the bikes that have been stored badly that are a nightmare. Perhaps the seller has simply whacked in a new battery, then cajoled it into life. The problem is that at least two exhaust valves will have been open for years and there might be corrosion around the valve seats and rust in the bores too. That corrosion can score the bores so badly you’ll end up with a £1000 bill to put it right.
“Always, always dribble a bit of engine oil down the plug holes and turn the engine over by hand with a socket on the crank or the bike in gear and rotate the back wheel. Before you remove the plugs check for crud that could drop into the combustion chamber; we use an airline to blow it out.
“If it will idle, but won’t take any throttle, chances are a CV carb diaphragm is holed. They are under the plastic carb tops which are simply held on by two screws. But there’s a pesky 4mm O-ring for the vacuum feeds that gets stuck to the cap, then falls off unnoticed, leaving you with a mysterious air leak.”
‘It’s the bikes that have been stored badly that are a nightmare’