Search the Community

Unfortunately as of today as i was going to clean out the head and lap the valves, i discovered a crack between the sparkplugwell and an inlet valve in cylinder 2 and 3. So i guess ill be needing a new head. The rest of the engine looks REALLY good, pistons, walls, cams, rockers etc. What head will be my best option? I've read that a GSXR1100 (86-90) or GSXR750(87-89 short stroke) would be a good improvement cause of better airflow. Are one of these a straight bolt on or what should i be expecting?

Hey every one thanks in advance for the help I recently purchased a 1992 gsxr 750 came with the 1100 motor already on it some fool stripped the spark plug threads out so I got another head and in the process of swapping all the guts over to the new head was just wondering what the torque specs where for the head bolts ,Will also need valve clearance for intake cam and exhaust any information will be a great help tips welcome please and again thank you

Hi there, I have an odd problem on my GSXR1100 Slabside which is defeating me, basically between tickover and just open throttle the bike runs erratically, after some investigation I noted that at tickover it was randomly dropping out on different cylinders, with a carb balancer on it the tickover was hunting a bit and every now and again one of the cylinders would 'drop out' for a fraction of a second. Rev it and it would settle for a while and then do it again. the problem does not occur when warming up but once up to temperature starts doing it. when riding at low speed say coming into a roundabout . throttle off and get slight erratic surging, then when throttle is opened slightly bike stutters before picking up suddenly, which can make taking roundabouts interesting as never sure if the bike is going to low side or run wide. Any ideas, much appreciated !!!, some background of bike , and what I have tried so far, including running a spare set of carbs: 1100 slabby with 1200 bandit engine , GSXR pickups & CDI, standard 34mm carbs, Dynacoils, Taylor leads, standard air box with K & N, crankcase breather to K &N rather than to airbox. Swapped out pickups, CDI, carbs, new taylor leads but made no difference replaced rubbers on inlet stubs, played with timing on pickups (have slotted holes on back plate , returned to standard setting), checked all the connections on the LT side of the coils , checked the taylor lead connections , changed the plugs. also monitored the voltage on the system during the rough running , sits at 14.6V with lights off and 13.4V with the lights on, no real fluctuation in voltage. bike is reliable and is charging , took it up to the isle of Man in august, ran fine apart from this problem, and certainly did not lack power at the top end etc. ran the bike on gravity feed from auxiliary fuel tank, that made no difference either. when it drops out almost sounds like it is back firing through the carbs , but not sure?