wondering how many other track days are thinking it is the front seal, and it is the omp..

does make sense with the heat and increased flow that it would show up only then.


beers

 

I'll bet if you buy a few more items from Paul, then the pics will go up more quickly.

 

lol

I am out of cash ATM. you might be able to help out ?

 

A few more my friends:

 

love the hat!!!!

beers

 

John Deere baby! If you look closely, the chair in front of the engine dyno has the same logo.

Paul.

 

That rotor crust looks exactly like the royal purple residue I found unburnt during my tests.

 

??? Uh-oh...

I will point out that Japanese Mazda dealers use Castrol synthetic... so...

I do think that the issue with 10W40 should be explored more.

The most wear you put on your engine is when you start up in the morning. 10W oil will get thicker at night than 5W or 0W oil. When you start your engine, there will possibly be more wear as the 10W oil warms up.

This also presents the case to use an Ester based oil (like RedLine for example or Motul 0W30) or at least "top off" or mix some Ester based oil in as the Ester clings to metal better and reduces metal to metal contact on engine startup.

 

SS, you touch on a great point about viscosity versus molecular bonding.

 

umm... interesting.

 

So what do the pictures tell us? Is the rotor crust a serious problem? What can prevent the rotor crust?

 

all i know is i am waiting on the guy in the cool hats comment.. as i am sure it will be accurate and a bit profound..

but what do i know, i could be wrong..

beers

 

I understand the hat!

 

While some of this is from the oil injection/premixing, most is from the rich fuel mixture.

I have been saying for some time that the rotary is an extreme carbon producing machine and needs continous cleaners in the fuel, hopefully lubricious ones like FP Plus, MMO or Redline SI-1, to keep it cleaned out.

This should also show that 2-cycle premix alone does not provide enough cleaning as Expo was running Idemitsu Premix, which is a great ester-based premix known for few deposits and decent cleaners included.

 

The Renesis in general is prone to carbon buildup as is also the case with a lot of modern engines. In the process of keeping our environment clean we have hydrocarbon propulsion trash cans, storing up carbon until we dispose of them.

Paul.

 

Haha.. how about we get them environmentalists to pay for our engine rebuilds

 

Lol Good luck

 

Yea, when they find out it is a carbon monster, they will be trying to ban it - or make you use all your allocated "carbon credits" on your car.

 

Perhaps through the threat of "carbon tax" we can stomp out the annoying mouth-breathing so prevalent at the airports I have traveled lately.

 

Yeah, what's up with these humans and their breathing? I don't get it.

PT

 

Plenty of song lyrics and Sci-Fi stories have warned us about "taxing the air we breathe". Breathe, exhale, same thing. I wish all this junk science would quit messing with our standards of living and just fade away.

 

Paul, is the rotor crust bad for our engines?

Have you disassembled a renesis that did not have rotor crust? What was the mileage on the engine? What did the owner do to prevent the crust?

 

Is there shots of the ports?

 

would, say.. shell v-power do a better job at removing the crust?

 

Mobil1 makes a 0W-40 and RP/Redline make a 5W-40 for us in cold climates. I don't make long trips (or got to the track) in the winter so I use 5W-20 and then 5W-30 when it/if warms up. Perhaps a 0W-40 year round?