Replacement engine? Hardened valves needed?

[mickael]

Just got a CNG off eBay and it turns out I need a new engine!

It is a 1999 Chevy Cavalier. I found a reasonable replacement but I heard I may need a special engine with hardened valves and intake. Has anyone else heard anything about this? Any advice is appreciated.

[Madspeed]

Re: Replacement engine? Hardened valves needed?

CNG if I am correct has no lubricating propertys,so Id bet valve guides are diff as well as seat hardness and possibly valve material as well..However I do not see why a good set of stainless valves and bronze guides would not work.
Just buy an engine directly from chevrolet.
You will be amazed at the price for a NEW engine.

I was floord by a local machine shop saying they could build me an eng but would not give any warrenty

I just requested a price on macine work and cleaning and I could get a brand new eng from chev for less.

I bet you could get one new for around 1900

My price is a bit lower as I own a shop and deal direct with a dealer

[mickael]

Re: Replacement engine? Hardened valves needed?

Thanks for the info! I am still trying to figure out what my best bet is.