I rebuilt mine for the first time last year after a carb butterfly dropped in the engine and siezed it. I stripped it down which was easy, I put the cases in the oven and got the bearings out. Pulled all the seals out and cleaned everything up.
I took the casings to Tal-ko and asked them to repair the casings where the butterfly had damaged alloy, they also bored it out to the next size. They supplied me with all the correct bits as I asked them to replace eveything like for like and check that it's ok.
I then took my box of bits and cleaned everything again, I took my time and I still managed to get the main seals in the wrong sides - fortunately before I pushed them all the way in I realised this, there was a difference in internal seal diameter due to the crank tapers.
All told it kept costs to a minimum, all the right bits were done like crank trueing etc...
I learnt a lot, if there was a job like doing an engine from scratch I would probably have to bow to the engine builders knowledge and let them do it as getting all the volumes correct and knowing what has an effect on what is a little beyond me right now. I would be able to figure it out over time but when I only have one engine I can't afford to mess it up.
The result? An engine which continues to pull like a steam train beyond 16k if I want it to.
Yes I saved £60 strip and rebuild costs but now I know how the engine operates, as long as nothing major is changed like gasket thickness then I know the engine will behave itself and be legal.
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