Category: Gerabox and Engine Rebuild

Although I’m back in the UK I’ve had very little spare time to work on the Marcos due to other commitments, however today I had had enough time today to strip down and clean up my heads ready for machining. These were then taken to the machine shop to have new valve guides fitted and hardened valve seats inserted for unleaded petrol

Painted the Gearbox in primer yesterday and then gave it a coat of silver today. I think it looks quite good! I also spent time taking the sump off the engine and measuring the wear on the crank. The crank was checked using plastigage and thankfully every thing seems to be good on what I’ve checked so far. I also checked the wear on the oil pump and that’s in tolerance as well.
My time off in the UK is over and I will be traveling back to Azerbaijan for work tomorrow so nothing else will be done to the car till I return to the UK.

Spent the day dismantling the engine, you can go to the Gallery section to see the pictures. The engine is in remarkably good condition and looks that it has been re-bored to +20 thou in the past. Since the engine was re-bored it can’t have been used much as there are no ridges at the top of the bores. However what problems there are with the engine look like they have been caused by the engine standing for a long period of time. The cylinder bores look as if they will clean up well enough with some emery paper however the cam may need to be reground due to some rust damage on a couple of lobes. The cylinder head just needs the seats of the valves that were open while the engine was standing to be re-cut, however I’ll probably have them converted to run on unleaded petrol while this is being done. Tomorrow I plan to check on the condition of the crank shaft bearings.

Spent the day rebuilding the gearbox and overdrive today all the gaskets were replaced and new o-rings and seals were used through out the gearbox and overdrive. All that remains is for me to clean the bell housing adapter before fitting it and then to paint the gearbox.

Continued dismantling the overdrive and then spent the rest of the day cleaning the gearbox and overdrive ready to reassemble.