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premix do i get rid of oil cooler and lines

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Old 02-20-12, 10:06 PM
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premix do i get rid of oil cooler and lines

im going to do the premix mod and was wondering if i get rid of the lines and cooler or do i fill the oil up still for crankcase lube? i searched most stuff that was posted was arguing whether or not to do it. thanks for any help
Old 02-20-12, 10:12 PM
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Donr remove the oil cooler hat has nothing to do with the premix. Depending on y ur premixing u can just add the mix and nothing else or if ud rather u could remove ur omp and use block off plates but be carefull the electronic omp can not be removed on a stock ecu. It can be blocked so it wont work but if you unplug the.wirea ur car will go into limp mode.
Old 02-20-12, 10:15 PM
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Pre-mix is only for lubing the seals on the rotors inside of the engine, you still retain the oil pan/cooler and have to check and fill the oil like normal otherwise the bearings on the e-shaft and inside the rotors will seize with a quickness.
Old 02-20-12, 10:15 PM
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Old 02-20-12, 10:19 PM
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i hav the mechanical omp on my car s4 so no electronics so no codes thats what ive read anyways. i will be removing the pump unless its ok to leave it. ive been searching for a couple hours havent found much info yet on the s4 mechanical pump anybody find anything send me a link!!
Old 02-20-12, 10:26 PM
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ok thanks for the quick replies guys
Old 02-20-12, 10:27 PM
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what is there to know about it? if youre planning to remove the omp, in the s4 just remove it, remove the lines and buy a blockoff kit from either banzai racing or pineapple racing or something... block the omp opening.

then the only other difficult part is removing the UIM and removing the oil injectors and lines...then putting the correct plugs in to complete the block off.

if you had an S5, you would have to go through the extra step of either getting an Rtek chip for the ECU or upgrading to a standalone or something
Old 02-20-12, 10:29 PM
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What's ur reason for premixing
Old 02-20-12, 10:37 PM
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oil pump is beat up leaky I'm going to take it off rebuild it and run premix for awhile to see if i like it then possibly put the pump back on. most likely will. I likey to experimenty.
Old 02-21-12, 02:38 AM
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Don't remove your oil cooler or lines. You need that. Premix you just put the 2 stroke in the gas tank before a fill up and treat the oil like you would with all other cars.

Rule of thumb:
1oz per gallon of gas w/o omp
.5oz per gallon of gas w/ omp
Old 02-21-12, 07:29 AM
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If you remove omp that lubricates seals and run premix instead, you still need to retain the engine oil system. The rx7 is not a 2-stroke piston engine. I think that's where you are confused.
Old 02-21-12, 08:08 AM
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i mix 8 OZ of premix per tank.
Old 02-21-12, 08:10 AM
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rebuild the pump and put it back on, premixing sucks
Old 02-21-12, 08:20 AM
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Take it to a dealership..
sounds like you don't know what you are doing
Old 02-21-12, 08:30 AM
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Originally Posted by SirCygnus
i mix 8 OZ of premix per tank.
Without an omp?
Old 02-21-12, 09:49 AM
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Originally Posted by SirCygnus
i mix 8 OZ of premix per tank.
That seems WAY too little. I do that same 8 oz per 6 gal of fuel. I guess as long as you are following the correct mix amount on the back of the bottle to give you the 100:1 ratio then you are fine. But what I use (Valvoline 2-cycle), it's 8 oz / 6 gal of gas. And thats with no OMP. With you should go for about a 200:1 mix IIRC. I will try to find a source on that number.

Edit: https://www.rx7club.com/3rd-generation-specific-1993-2002-16/using-premix-omp-968334/

1/2 oz per gallon seems to be good with OMP still installed, and that's with Idemitsu. I highly reccomend Idemitsu since its branded specifically for rotaries. I'm just using up the rest of my Valvoline before I go to it. You should be safe though as long as the mix you use is labled TC-W3.

Last edited by REAmemiya_fan; 02-21-12 at 09:57 AM.
Old 02-21-12, 10:00 AM
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Originally Posted by Furb
Take it to a dealership..
sounds like you don't know what you are doing
Agreed, or a shop.
Have someone else fix it, do more research and fix it yourself next time.

You OMP probably isn't leaking too bad, I bet it's the oil pan gasket.
Old 02-21-12, 11:05 AM
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Originally Posted by texFCturboII
My thoughts exactly.
Old 02-21-12, 12:37 PM
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I got all the info i need now i believe. Im not going to remove the oil cooler and lines I was confused thinking i was gonna have to not put any oil in there anymore. I learned that NO I can't do that. baha I am a do it yourself kind of guy so I will be doing it myself I have confidence and time to do it correctly. My omp is covered in grease and dirt I don't think that the oil would come from the pan and cover the entire pump and its surrounding in oil since the pump is above the pan? Again I'm trying to get info not start a debate so thanks for the link REamemiya. The search bar on this site is sensitive gotta type in stuff that isnt related to what your looking sometimes. like a mind game or something. and yes I am still a noob with these engines, Ill ask questions that are stupid as hell because I am still learning and like to assure that everything Im doing is the correct way. I am learning quickly and loving the car.
Old 02-21-12, 01:09 PM
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try cleaning around it first, then maybe the lines themselves are cracked and leaking
Old 02-21-12, 01:16 PM
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Originally Posted by REAmemiya_fan
That seems WAY too little. I do that same 8 oz per 6 gal of fuel. I guess as long as you are following the correct mix amount on the back of the bottle to give you the 100:1 ratio then you are fine. But what I use (Valvoline 2-cycle), it's 8 oz / 6 gal of gas. And thats with no OMP. With you should go for about a 200:1 mix IIRC. I will try to find a source on that number.

Edit: https://www.rx7club.com/showthread.php?t=968334

1/2 oz per gallon seems to be good with OMP still installed, and that's with Idemitsu. I highly reccomend Idemitsu since its branded specifically for rotaries. I'm just using up the rest of my Valvoline before I go to it. You should be safe though as long as the mix you use is labled TC-W3.
im hard core. i run 8oz WITHOUT an omp, and i use tecw3.
Old 02-21-12, 01:24 PM
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Originally Posted by Molotovman
Agreed, or a shop.
Have someone else fix it, do more research and fix it yourself next time.

You OMP probably isn't leaking too bad, I bet it's the oil pan gasket.
+10

The fact that you would even ask that question makes me very concerned for your RX7's welfare.
Old 02-21-12, 01:42 PM
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so maybe im doing something wrong but i only use 1oz to the gallon and i have the omp still????
Old 02-21-12, 04:21 PM
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ha my car is on the verge of junkyard material. i just got it for free and decided to have fun and learn how to do all the different mods on it. I'm doing everything from body work, internal engine work, to the soldering of electronic circuits. There would be no point for me to take it to a shop and waste hundreds to thousands of dollars in labor when i want to do it myself. thanks for the help.
Old 02-21-12, 04:24 PM
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I am going to replace the omp lines first to see if it helps with leaking. I think its screaming "kill me now" but I wont let it happen!!!


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