rotaryPilot

Since I am not the owner some info was not so accurate. The last update from the owner indicates 1500Km for break in

Yes

rotaryPilot

180 mililiters = 0.18 liter = 180 grams

check it out www.onlineconversion.com

rotaryPilot

ok, Have you read the rebuild of the expo1s renesis ? Have you read Mazmart Paul who said to expo1s to reduce the premix quantity due to a lot of carbon?

Do you know that expo1s was using 4 oz of premix ??? With this quantity Mazmart Paul said to back off a little with premix !!!!!!!

So you are using double the quantity of expo1s which means 8oz per tank.

9krpmrx8

iTrader: (46)

True that.

ASH8

Well to me the engine looks pretty normal 'Carbon' wise.

To get "Carbon Lock" something has to "Lock Up", appears the only broken parts was a side seal spring which is unusual.

The reason the Carbon is soft is because of Pre-mix.

ASH8

Forgot to Add, rather than turn this into a Pre-Mix hate thread, this issue this motor had was not pre-mix related.

It was a broken side seal spring...not Carbon related...IMO.

8 Oz's (240 mil) per tank is the correct number, 4 Oz's or 120 mil is doing next to nothing.

technics (kevin) a club member and Mazda Master Technician who works solely on RX-8's (Rotaries) recommends pre-mixing, and I agree, to used his words, there are no downsides to pre-mixing.

I guess my engine is about to expire, I have done 6000 Miles and pre-mixed from the day I drove off the showroom floor.

IMO this issue is just one of those things that just happened, it could have been a badly made side seal spring.

Nubo

That works for water at 4 degrees Celcius. I don't know the specific gravity of your premix, but oil usually is less dense than water

ASH8

One thing I have noticed, and I know it is not "groundbreaking" but, after I drive and always give her a few red-lines (hot engine only) I check out inside the rear exhaust pipes when home, instead of the color being dark black like most RX-'s, mine is always a deep slate blue/grey, showing the pre-mix is doing it's job.

And I use Amsoil Saber Pro.

rotaryPilot

- Pettit Racing suggests 4 oz at each fill up.
- Paul Mazmart said to expo1 to back off concerning premix (3 oz per tank). Expo1 was using 4oz per tank

well both of them are rotary experts


what do you mean by that? sorry I did not get it.

bse50

[QUOTE=rotaryPilot;3117736]- Pettit Racing suggests 4 oz at each fill up.
- Paul Mazmart said to expo1 to back off concerning premix (3 oz per tank). Expo1 was using 4oz per tank

well both of them are rotary experts

[QUOTE]


While it is true that they are rotary experts is it true that what they said could be valid for EVERY situation?
I mean, did expo1 spent more time at the track than at home? does pettit refer to cars that are always driven hard?
3\4oz per tank are ok if you drive normally but do you think that they will work if you track your car?
I did some experiments, up to 800gr\full tank with the OMP removed... that won't cause a carbon lock!

You should ask paul andpettit in what conditions they suggest that you use that amount of oil Like everything in life, it's relative!

r0tor

iTrader: (1)

there is no reason to premix more then 4oz per tank if you have a working OMP

ASH8

To put this in some perspective, 4 Oz's is roughly a ratio in metric of 2 mils per litre of fuel..

That is 2 mils per 1000 mils of fuel...almost insignificant...or 500:1
or 8 oz's = 4 mil per 1000 mils (litre) of gas...or 250:1

If you work your engine hard do 8 Oz's

rotaryPilot

^ what about this ?

bse50

That is mysterious additive with not shown specs.
2stroke oils are another thing and they show the specs they meet.

r0tor

iTrader: (1)

think of it in terms of how much the OMP is already adding and 4 oz is far from "insignificant" - its more like a 50-100% increase

bse50

And that is enough for covering the center lubrication issues for a road driven vehicle...
Would you rely on it for a mostly track driven car? I wouldn't, especially with our temperatures!

r0tor

iTrader: (1)

for a REAL track car, it should be a moot point as none to my knowledge even have an OMP functioning...

bse50

Amen to that but again, if you tracked your car every other week for a long time would you stick up to the 4oz mark?

ASH8

Oh Really?...Gee I never new rotaries has a MOP.

For those that actually own a RENESIS I, 99.9 % of members, 4 oz's is insignificant when there is NO oil (MOP) making it to the centre of your Apex Seals.

The ONLY way to get ANY oil there is to ADD PRE-MIX...IMO 4 is not enough, 6 min 8 max.

rotaryPilot

^
ASH8 what do you think about this statement

Brettus

iTrader: (2)

why is this a premix argument when it is pretty obvious that the failure had nothing to do with premix ?


I find it very strange that the only component that would give a clue as to the failure was thrown away ......

rotaryPilot

The argue that 4oz of premix + OMP is not premixing at all.

However, you are very right about the thrown away of side seals springs. I was present when I saw the mechanic to pull out the side seals springs with difficulty like they were stuck and throw them away at the floor of the rotary shop after having examined them optically.

Brettus

iTrader: (2)

sounds like a bit of showmanship going on

bse50

Apparently... with a screwdriver or a good pin even the stuck springs come off easily with some patience and love. Anyway i don't really see how they coul be stucked there, maybe he said stucked but intended "badly bedded in?"

r0tor

iTrader: (1)

hah, last time i checked i owned a RENESIS I....

Lets see, several Renesis I engines went over the 100,000 mile mark with absolutely no premix. Most egines die of carbon death and not seal wear. Also, if you actually bother to figure out how much oil mazda injects, you'd realize an additional 4oz is very significant - but don't let logic or facts get in the way of your opinion.