I found a C30A3 engine which, as the owner says, has been standing for 20 years. I would like to bring it back to life. I would like an experienced forum colleague with tips...
OMG...what is the owner asking for it? Maybe it's better to part it out than taking the risk. NSX engines don't go bad normally (except the literally over-blown turbo and compressor ones).
I would like to start the adventure with this engine - in future I would like to make the Eng Refresh in my NSX. I removed the valve cover in there are no rust, I looked in the cylinder bores.(with Borescope) no rust only deposit on head pistons. I sprained the oil drain screw - unfortunately I do not see the connecting rods (splash guard).
I have not turned the crankshaft yet!
I should pour the pistons with the chemical preparation -Engine flush(I do not know the condition of the piston rings)
Valve stem -spray with WD40?
If the engine was not turned by hand the past 20 years, i would do following, unless there is not much rust on the cylinder wall, etc.
First before turning the engine, put 2cl oil into each cylinder thru the hole of the spark plugs. Turn it a few times, but put the engine in a position so the piston of each bank show straight up. That way oil gets all around the wall and piston ring.
1) new timing belt, tensoiner, water pump, LMAs, 2 valve cover gasket set, 4 cam plugs and 4 seals. 6 spark plugs
1a) check if both crank seals are dry.
2) get a new crank pulley + shield
3) get refreshed oem injectors
4) get the oil pan off and clean it. Put back with a new seal.
After 1000km driving change oil again.
I fired a 10 year and a 7 year old engine, but the 10 year old engine was cranked by hand 1time per year. The 7 years engine not. It was in an damahed nsx and after just an oil change i cranked it and fired immediatly on 3, 4 and then on 5 cylinders. 1 cyl had a glocked injetor.
I have all parts which you need in stock, also if you like to put the engine completely appart to put new piston rings, valve steams, etc.