RC Paperboy

New to gas, so bear with me. I bought a used car/engine this year. The engine is a 3 port novarossi, I think its something like an NS12 S1. There is some caked on dust and grime on the cooling head, especially around the base of the head. Could that cause overheating? Is temerature very sensitive to a little grime, or is it only an issue when you get the whol ething coated?

When I tune the engine for what seems to me to be best performance, it runs a little over 250, I think. My pit guy tuned it for me today to cool it down a little by richening it a little, and it ended up around 210, but it felt like it was bogging all the time.

Could this be because the head has dust and dirt on it? Or will a small layer of dirt not effect it?

Thanks

onnetz

It will make a difference.... clean it off...

RC Paperboy

I was thinking scotchbrite and degreaser? Good idea/bad idea?

onnetz

nitroblast works great...
you will get alot of different answers on whats best to clean an engine.

RC Paperboy

Anyone have a good way to clean in between the fins of the engine head? I tried a toothbrush, wasnt abrasive enough. I tried "flossing" with a peice of string, but it only cleaned teh farthest back part. I cant seem to find something thats abrasive enough, yet thin.

AndyT ©

Try some denatured alcohol (methylated spirits) on a rag and then pull it through the fins to remove the dirt.....sometimes a paintbrush can also remove a substantial amount of dirt in between the fins.
The best way I`ve found, is to remove the head, give it a good clean in denatured alcohol with a paintbrush, and then use a air compressor to blow it dry and remove any remaining grit.