Understeer is when you hit the wall with the front of the car. Oversteer is when you hit the wall with the rear of the car. Horsepower is how fast you hit the wall. Torque is how far you take the wall with you ...
Or ramblings on three originally Dutch TR7's (a 1976 FHC, a 1980 DHC and a 1981 Sprint powered FHC), including the work done to them and their (ab)use all over Europe. With some of my other passions thrown in from time to time ...
Had a go at machining the mating surface of the water pump impeller. Actually the plan was to go over to a friend to ask him if it could be done on his lathe and when he would have time to do it. Five minutes later it was ready;
Will polish the surface with some very fine (1600) emery paper before putting it all together with a recondition kit.
Also found out during the water pumps renovation that a ball joint separator tool is perfect for removing impeller remains from the pump shaft!
Under the pretention of resupplying the spare parts a bit I had a go at reconditioning the water pump I took out of ‘t Kreng in September. To start with I tried to remove the impeller from the shaft. After some not to heavy taps on the top of the shaft with a hammer I could see that the shaft had moved a bit … I had progress. So I continued with the tapping. Until the impeller suddenly fell apart in 5 pieces. Damn, I hate jig saws!
Looking at the surfaces of the cracks I can only conclude that the quality of the casting isn't that great. It looks rather brittle with quite a lot of crystals in it. And yes it was an aftermarket item, not an original Unipart one.
So while I was working on Renés Dolomite today I rummaged through his parts attic and found a pump with a fairly good impeller and a completely knackered shaft (missing a few teeth). Ideal, as the shaft of the pump I wanted to recondition is in pretty good shape. And this impeller came off without a problem.
As you can see it looks a bit rusty but that’s only very light surface rust. Only thing that needs to be done is machining the mating surface for the seal lightly to get it smooth again.
