ayrton012

Yes, so one more thing that would be nice to know! Is the S2's oil warming faster after cold start vs S1? But this data would be false because of the different S1-S2 OC coolers (maybe dif. thermostats).

The pellet is for not cooling the rotors with cold oil. But cold oil would get warm faster if it sprays to the hot rotor's inside. ???

Mazmart

iTrader: (12)

Yes. I mis-understood what you said. I thought you were suggesting he would have less pressure in the shaft.

Paul.

olddragger

iTrader: (3)

well--i have been running this mod for over a week now.
my initial posted readings have been consistent.
no leaks anywhere
additional---less of the milky dipstick stuff--higher temps will do that.

It is really difficult to get the coolant temps and the oil temps over 180F with the ambients I have now--highs in the 50's.

I am beginning to believe that some cold climate cars may not be reaching appropriate engine oil temps?
OD

ayrton012

Thanks Paul! Sorry, my english is not perfect.

ayrton012

Good news. Here is around 20-32 F. I can hardly get above 158F oil temp. At idle the oil always cools down back under 158F.

Low oil pressure, unstable oil temps... I don't understand the Mazda with the S1. They use two oil pres. regulators, but the front beats out the rear one from work. They use such oil coolers thermostat which are not effective, and partly opens at too low temps. ???

9krpmrx8

iTrader: (46)

Yeah I think so too OD, I let my car warm up (150F water temp, 100F Oil Temp or higher usually) before I go anywhere and then I drive gingerly until the oil temp is around 160-170F and by the time I get close to work it's barely in the 170's. Then I usually hit it hard on the one way access road (80-90MPH) to red line to get it up into the 180-190's and burn off any moisture.

Nemesis8

iTrader: (3)

It was interesting to notice Racing Beat upping the oil pressure in the ported flash tune to 90 PSI. Link to PDF here.

9krpmrx8

iTrader: (46)

I wonder if increasing the max PSI if they saw and increase across the board?

HiFlite999

iTrader: (2)

Found a package from Mazmart Paul on my porch (the real porch, not the German sports car) today. Fast! Fired up the Milwaukee circular saw to open the box (just how does one get 6 yards of packing tape on a parcel that small??) and pulled out a baggie of good stuff. It's already clear this won't be the sexiest mod in the world, but looking forward to getting it installed. At least when some guy in a LS1 Corvette pulls beside me at a stoplight, while I spot him 200 hp, 250 ft lbs, and 4 mpg, who's pumping the highest oil pressure dude??

ASH8

Yep Ayrton,

The S2 E-Shaft Thermo Pellet is the same (as all rotaries 1985~)...

With the S2 Oil Coolers, I am thinking there is a difference with the inbuilt Thermostat/Restricters as Both Oil cooler part numbers are all new, but the mounting brackets are the same as S1. Also as we know all the Oil supply Flexible lines and fixed solid oil lines are also S2 specific and all new..

The purpose of the E-Shaft Thermo Pellet is to assist in Faster Oil Temps and or reducing the engines warming up time frame....PLUS all the other incedentals...like Oil Coolers and how the Air Flows through them, and By Pass Oil Pressures...and even Oil Viscosity..

This thread although getting a bit long has been very helpful and enlightening...

olddragger

iTrader: (3)

well please keep in mind that prolonged idling (warming it up etc) can led to fuel dilution of your oil..
Now i am supercharged with bigger injectors and modified tune + water methanol injection i turn on at times. But my latest UOA shows 1.8% fuel--which is not past normal values but it was enough to lower the oil viscosity to less than it should be. CST @100C was 10.5 and should have been 12.9--16.
i do run a 15w/40 Valvoline blue diesel oil.
Have to address this.
OD

9krpmrx8

iTrader: (46)

Yeah I used to sit and idle until absolute warm up but now just get the coolant temp up for the most part and then just drive slow through the neighborhood. I am curious how this UOA will be.

GeorgeH

iTrader: (2)

I also wonder about carbon buildup while idling - I've been told that stop-and-go driving is hard on rotaries, from a carbon-buildup standpoint, and I assume idling is just as bad or worse?

ayrton012

How could it help on warming the oil faster, if the rotors are one of the hottest part of the engine, and the pellet avoids getting the oil spray on the rotors?
But OD has high pressure so the pellet can't avoid the oil spray, and for this reason the oil gets hot faster (by the rotors).

I can't say other than:

The pellet is for not cooling the rotors with cold oil. But cold oil would get warm faster if it sprays to the hot rotor's inside.

9krpmrx8

iTrader: (46)

Woot! I got my kit.

madcows

As it was said before, OD has a Mazmart engine which does not have the pellet.

9krpmrx8

iTrader: (46)

OD, how long did you let the RTV dry on the pan once you bolted it up before you started the car?

heyarnold69

iTrader: (1)

pros cons?

ayrton012

So it is answered the question of the quicker oil warm up, I think.

Anyway it is interesting that Mazda uses this pellet for decades for quicker engine warm up, but the pellet causes slower oil warm up. One step forward, one step back. ???

Mazmart

iTrader: (12)

I hate to speak in ignorance, however, I'll add my somewhat educated thoughts on this matter. The bypass thermostat in the eccentric must be for creating heat in the motor faster (Vs the oil) in that restricing the spray to the inner walls of the rotor during warm up must generate more heat or rather the heat created through combustion will rise quicker and not be removed easily through the oiling system. What we've in effect done is almost totally block the bypass, thereby keeping pressurized oil in the shaft spraying under all conditions and then we've increased the pressure, perhaps magnifying the behavior of drawing heat out of the motor via the oiling system. Theoretically, the water system should have a little less to deal with.

The reason that we do the eccentric mod is to avoid potential failure of the thermostat which can be really bad on many components including oil seals amongst other items.

Paul.

rotarymike

iTrader: (1)

Anyone notice that the pellet was introduced about the same time emissions became mandatory? I think the pellet's function is to rapidly increase combustion chamber temps thus reducing NO and other nasties sooner. I've worked on a few engines pre-emission (a '72 RX-2 springs to mind) that did not have a pellet at all.

On another note - I found that the Purolator One filter for the 2nd gen is about 3x larger by volume than the stock FD / SE filter, and actually fits in the space allotted. It's also for some reason cheaper than the Pure One filter for the SE. However, it bypasses at 12-15PSI and not 14-18 PSI. :shrug:

olddragger

iTrader: (3)

get the oem 09 oil filter with the higher by pass pressure.
od

jmc23200

^ Would you use the 09 oem filter on an 04?

RIWWP

iTrader: (2)

I had Rosenthal Mazda throw in several 2009 oil filters when I ordered my coils last Friday, and they showed up yesterday. Definitely switching to them in my '05, probably be doing the oil change today.

Mazmart

iTrader: (12)

I could have saved you a little more on that group of parts but perhaps next time.

Paul.