Rango

I currently have the stock 1.6 in my car but I want to wake the old girl up a little bit. I have a 1.8 from a 2000 model that I want to build all out vvt head, cams, pistons, ect.

My stepfather is an old school Nascar fan and told me that they used to paint the inside of there engines to help oil flow and reduce splashing, apparently this made enough of a difference that they actually made a rule against it.

​​​​​I feel like paint inside the engine is a good way to clog the oil pump but it got me thinking, would it be worth it to take a grinder and sanders to the block and smooth out all the areas where oil runs down back to the pan. Anyone else ever thought about this or tried it? I found a few people talking about doing this but they said it could cause heating problems not sure how, any suggestions welcome.

sixshooter

iTrader: (12)

I can think of many more places my time would be better spent than polishing the interior of my engine block by hand. My car really doesn't have to be the fastest on the track or the street. It's fast enough to be fun and that's why I built it. If I was racing for million dollar money I would have the inside of my block Teflon coated.

Ryan5405

The stuff they used is glyptal, it is supposed to help with oil drain back. But it’s really for insulating electrically. More then likely that’s where people think it will cause “hot spots” of cooling issues, just a misunderstanding.


It looks like a huge pain in the *** to put on.

I used a carbide burr and some sanding cartridges to take down the burrs / casting slag,
especially near the oil drain back. And called it a day.

sixshooter

iTrader: (12)

Yes, deburring and smoothing it is a good idea in my mind. That can only help the drain back.