What has to happen for the rings to be destroyed if one overheats a new motor? How hot? How often?

I'm burning oil big time and I'm worried I screwed up this (second) rebuilt motor.

How often does it have to happen for the rings to loose their tension?

(I had a problem with the FAST computer) I screwup the fan on/off settings and i waschasing aroud the fan hardware not realizing it was a computer problem.

 

the head gasket should have blow well before your rings would go from overheating..The worst ive seen myself is two cracks in one head, 6 in the other and a cracked block..(I really had to get from where i was!)The rings when i pulled teh engine apart were ok..

Id look into the clearances when you assembled the engine and the surface of teh cylinder walls when you got done honing them..If you used moly rings keep in mind that they seat very slowly compared to cast rings..Same goes for tool steel rings..I used them in my current engine and they took forever to seal up..

What are you crank and rod clearances like?Whats the normal oil temp and what oil are you running?Are the heads fresh? Look into the valve seals and especially the guides, if the guides are wron then no seal will help you.Oil is getting into the chambers somehow and if your sure it is then its more than likely not from overheating the engine..

Starting a fresh engine always sucks when you ar ethe one responsible..I try to forgo the thermostat and keep a fresh supply of water around..Im lucky to have a big assed warehouse fan too..When you top off the cooling system make damned sure theres no air in there at all.A trick that works fast is to run a funnel through a heater hose and hold ity way higher than teh engine and let it hang till you pass at least a 1/2 gallon of water through and out the open hose bung.Advice not asked for but others may need to know

 

Strange, I always thought one of the advantages of moly rings was that they seated quicker than most anything else. Am I mistaken?

Thanks

 

They are "plasma moly" rings.

I have about 300 - 350 miles on it and it is burning real blue. Its burning at idle and of course under hard acceleration. They are new AFR heads that have been ported. I'm afraid I did not build the motor and candidly another engine builder told me I was burning way to much oil for the circumstances. I have not yet spoken to the engine builder but what is he going to say. I'm using 10W30

Will it perhaps get better? is there anything I can do in terms of working the engine to try and improve things?

As I say, I overheated about 4 times in total. I also had the car ideling in the driveway quite a bit before getting out on the road. (maybe an hour or more, I had trouble with the FAST and some injectors.)

Any other comments would be appreciated.