Technical > Spud Miller's Cave

top end lube

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Spud Miller:

 I didn't use top lube my first year of racing. I put a lot of laps on the car and when I tore it down after the first season, I'd already put .003 wear on the cylinder bores. At that rate, I figured the pistons would be out flopping in the breeze within a couple of years :) The next season, I used the tiny cap from the pint-size top lube container and put 3 level cap fulls in every 5 gallons of methanol. Almost no wear at all after that. I don't use top lube anymore, but I put so few laps on the car now, I'm not too worried about it.

 The fuel pump could be another benefactor of top lube, but if you're running a pump with coated internals (just about every brand is now), then that probably isn't anything to worry about.

 It doesn't take much to work...1 pint to 3 gallons is WAY too much and could definitely cause performance issues. 1 pint is generally used to treat a 55 gallon drum. "Power Plus" is what I'm familiar with.

 Spud

Paul New:
I run the power plus stuff Spud is talking about 1 pint to a 55-gallon drum. Occasionally I run straight alcohol and see zero improvements. The reason I run the lube is sometimes I am a little lazy after an event and I don't clean the fuel out quickly

ricardo1967:
Hey guys, here's an old question I have...

Nitro motors typically have that hazy/cloudy exhaust fumes... almost like a two-stroke engine.

Is that caused by overly rich air/fuel? Or top lube? Or a combination of both? Or what?

hemidakota:
Top lube was the problem...testing today and mph is back.

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