19-06-2019, 07:52 AM
Take care if using radiator flush that it doesn't in fact result in blockage - the loosened material tends to gather in bottlenecks like the aluminium side manifold. Needs flushing out very thoroughly.
Fan felt may certainly help. Whether you can get it apart depends on your car I think. I have recently replaced my fan bolts and did it by removing the radiator screws & bonnet brace, undoing the top hose jubilee clip, and tilting the radiator forward. But each car is a little different. The aluminium casting which holds the fan is a minor 'weak spot' on Sevens and easily broken - take care with the bolt that locks the fan belt tension.
You can tell a crash gear box by the slightly taller 'turret' for the gear lever, which has a large nut on it. The 3rd ratio is about 4% lower than a standard synchro box. Whether this is a plus or minus rather depends where and how you are going to drive the car! Personally I like the crash box and in steep places it means I can hang on to 3rd where I might have had to drop into 2nd. There is also less in them to go wrong if you fancy going further afield.
Fan felt may certainly help. Whether you can get it apart depends on your car I think. I have recently replaced my fan bolts and did it by removing the radiator screws & bonnet brace, undoing the top hose jubilee clip, and tilting the radiator forward. But each car is a little different. The aluminium casting which holds the fan is a minor 'weak spot' on Sevens and easily broken - take care with the bolt that locks the fan belt tension.
You can tell a crash gear box by the slightly taller 'turret' for the gear lever, which has a large nut on it. The 3rd ratio is about 4% lower than a standard synchro box. Whether this is a plus or minus rather depends where and how you are going to drive the car! Personally I like the crash box and in steep places it means I can hang on to 3rd where I might have had to drop into 2nd. There is also less in them to go wrong if you fancy going further afield.