What exactly does pre mixing do for the engine?
Do you just add the pre mix to the gas tank?
How do you pre mix?

 

The engine uses an oil metering system that takes oil from the oil pan and injects "a minute amount" into the Housings(internals) so the engine's apex seals are lubricated.Otherwise your engine would stop.It needs lubrication somehow.
Now,If you delete this OMP system then you Need topremix 2 stroke oil with your gas,so every time the internals get fuel that oil/gas mix is lubricating the internals of the engine.
Your basic rule of thumb is 1oz 2 stroke per gallon of gas.

IF you do not have an working OMP system and you do not Premix,then the engine is just going to eat itself up due to friction.
Can you say Rebuild?...come on..R-E..bbbbbeautiful..(you get it..good job!)
That my friend is Premixing and why the OMP system is there.

 

Thanks! so do you just add it to the gas tank or do you mix it in a separate gas can?

 

Best thing is to figure out exactly how much gas you're putting in and add the 2 stroke before filling up. This way it mixes in the tank. Just remember 1 ounce per gallon or it will smoke like a weed eater hahaha

 

Thanks for explaining guys, I couldn't find a real solid explanation for it anywhere haha

 

Wondering what would be the best option for pre mix oil, idemitsu or TC-W3 2cycle! Had anyone used or using either one. Open for suggestions, thanks! Rot005

 

Pre-mixing seems to be a real Bone of Contention. Some Rotary experts will tell you to definitely always do it. Others say "Bah Humbug, as long as your not racing the car and your Oil Metering System is working fine, you're throwing your money away".

 

just get TCw3 and be done with it.
You can spend a shitload of extra money on High name oils.frankly just not worth it.

..and "this guy"(myself) would rather have Full coverage of lube than a small spray through a hole in the housing..(you ever see the Trail of oil in a housing after tear down you will know what I mean).

 

https://www.rx7club.com/new-member-r...stion-1033428/

https://www.rx7club.com/new-member-r.../#post11632933

 

The OP has a FD. Doing that would destroy the OMP and put the ECU/engine into limp mode. Not sure who or what a "rotar dde" is, but doing that even on a FB doesn't sound really smart. And who wants a car belching smoke unnecessarily?

 

"rotar dde" Is a rotor DUDE..most likely,along with his attempt at spelling (m)etering pump.
Which honestly didn't fair out for him since he was BANNED for Not following rules,so his post is deleted too Jim..
Some guys like to test the rules.Sorry,No soup.

Here's to Premix!

 

I do. Just wondering about what kind of oil gets good results, Mazda uses idemitsu in Japan and they talk good about that oil, of course is racing and cost more. Just finished a 13b and taking away the OMP. Are you having no problems with TCW3? THX.

 

Is ironic, but there's the saying " what comes around goes around" I was a victim of a scam by this DUDE a while back, small world!

 

^ ^

Many...most of us, have used the "over-the-counter" two-cycle for years w/o issues. It's inexpensive and readily available at any chain parts store. It's great if you want to spend the extra for Indemitsu or Pettit's "Pro-tec R". Although I've never seen any credible longitudinal comparison of those oils against the standard TCW-3, it's likely they perform marginally better. How much better? Is it worth the extra cost, shipping and hassle for what you use the car for? You be the judge.

 

You are right! Racing is a complete different scenario than daily driving you brought up a point, it is worth the extra cost! What is important is keeping the internals wet with a clean burn and TC-W3 will do it! Thx Jim!

 

Care to elaborate?

 

It is better to leave the oil metering pump in. It is recommended one Automatically mixes oil for you two it avoids gas tank separation and user error.

 

I agree....partially. But not for those reasons. I guess someone could forget, but not likely if you're a real car guy. And two-cycle oil is designed to mix with gas and really doesn't separate.

IMO, at least on my car, neither the OMP or pre-mixing is adequate by itself. But my reasoning is probably best left for another thread.

 

To be honest, just happened couple months back with some rotors. Is in the past we've been warned, we can concentrate with our rotary issues and enjoy the club! Thx!

 

You're completely right its been design to leave it in but, they do fail (creating an internal problem $$$) mechanical more often than electric ones without you knowing they are working, so that's when pre-mixing comes into place, you need to be aware every time you fill-up. Is like taking your vitamins every day!

 

I do 1.3 oz per gallon. I gas up the tank half way, pour in the calculated amount, then gas up til full. No problems yet.

 

hi from ross in nanaimo b.c. new member. I removed my oil metering pump and mounted it in the engine area so that the electric pump will still connect to my s 5 engine harness. have only used half a tank of gas with the mixed fuel,but seams fine. 1 oz per gallon of yamalube marine two-stroke oil. I HOPE THIS IS OK it does say tc-w3 rl-83000. I thought it was a little costly though.