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-   3rd Generation Specific (1993-2002) (https://www.rx7club.com/3rd-generation-specific-1993-2002-16/)
-   -   Best method to premix (https://www.rx7club.com/3rd-generation-specific-1993-2002-16/best-method-premix-1024409/)

Tem120 Mar 20, 2014 11:47 AM

Alright so for the last couple of years I've been Using a funnel and rag my friend does not use any such thing just pours it in from the bottle and lets it go in through the 2 small openings in the filler apart form the filler getting a bit messy which i fixed by washing down with gas hah , nothing wrong with doing it this way is there?

the bottle has a short neck so its not long enough to push the cap down basically just going in through the breather holes

Fritz Flynn Mar 20, 2014 12:08 PM

I use a mobil one gear oil bottle. Squirt in some and put the little cap thing on, then tuck it behind the seat with wash cloth. I still have the OMP so I only put in about 4 to 8 OZ's, I just want her to know I care :)

DriftDreamzSS Mar 20, 2014 10:56 PM


Originally Posted by Tem120 (Post 11702722)
Alright so for the last couple of years I've been Using a funnel and rag my friend does not use any such thing just pours it in from the bottle and lets it go in through the 2 small openings in the filler apart form the filler getting a bit messy which i fixed by washing down with gas hah , nothing wrong with doing it this way is there?

the bottle has a short neck so its not long enough to push the cap down basically just going in through the breather holes

Nothing wrong with this way, been doing it for years. A funnel or long neck bottle is 100% unnecessary on an FD. You do not need to push that little flapper in, the oil makes it in just fine and doesn't make any sort of mess.

elwood Mar 21, 2014 06:07 AM

I removed the flapper; I can pour at full speed. I haven't noticed any negative effects.

t-von Mar 21, 2014 12:12 PM


Originally Posted by elwood (Post 11703192)
I removed the flapper; I can pour at full speed. I haven't noticed any negative effects.

Hmmm that would simplify things!

BLUE TII Mar 21, 2014 01:08 PM

I re-use a small fuel additives bottle for premix that has a long neck to push the flapper open.

The added benefit is no measuring and less mess compared to other methods I used in the past.

BLUE TII Mar 21, 2014 01:15 PM

I removed the flapper; I can pour at full speed. I haven't noticed any negative effects.

I get a lot of fuel smell from gas sloshing into the fill pipe area when I race. I fear removing the flapper would exacerbate this in a cornering performance situation.

jasonn Mar 21, 2014 02:20 PM

I have a $3 long neck funnel and clean it each time but running gas through it.

Prôdigy2nd Mar 21, 2014 04:38 PM


Originally Posted by BLUE TII (Post 11703389)
I get a lot of fuel smell from gas sloshing into the fill pipe area when I race. I fear removing the flapper would exacerbate this in a cornering performance situation.


That's possible, but I will say this, all the JDM FD's I've seen around my area, I have yet to see one with the flapper in it.. Not sure if they all got removed, or never came with them in the first place


J.

OyvindRX-7 Mar 21, 2014 05:05 PM

I use this: http://www.biltema.no/ProductImages/...e/82-397_l.jpg

Pour right amount of oil in, after use I tuck a bit of paper inside so it doesn't drip.

Driftfc3s Mar 21, 2014 05:46 PM

Is Karissa doing it right?

https://farm3.staticflickr.com/2869/...b4a1b1_b_d.jpg

ksu-chewie Mar 21, 2014 08:00 PM

I use Protek-R.
I use squeeze bottles.

elwood Mar 22, 2014 07:52 AM


Originally Posted by BLUE TII (Post 11703389)
I removed the flapper; I can pour at full speed. I haven't noticed any negative effects.

I get a lot of fuel smell from gas sloshing into the fill pipe area when I race. I fear removing the flapper would exacerbate this in a cornering performance situation.

Gas sloshing into the fill area shouldn't cause any leaks or smell. A good functioning cap will withstand the slosh, and your vent system isn't connected to the filler neck -- it functions through plastic fittings in the top of the fuel tank.

The purpose of the restrictor and flapper goes back to the transition from leaded to unleaded fuel. To prevent people from putting leaded fuel in newer cars, the OEMs added that restrictor which only allows the smaller unleaded nozzle to fit all the way. Somebody decided that wouldn't be enough to keep some determined customers from putting in leaded fuel anyway, so they added the flapper to kick fuel back out of the tube if the pump nozzle doesn't fit all the way inside the restrictor.

If you check modern cars, there's typically no flap., with a smaller dia tube. Where I live, there aren't any regular pumps anymore, so there isn't much fear of mixing them up.

Ev|L-EX Mar 22, 2014 05:07 PM

I use a traxxas 3.3 Jato 500cc Fuel Bottle for one of those R/C cars. Holds my idemitsu premix with no issues and pours without any mess into the gas tank. Of course since I still have my OMP, I only mix half an ounce per gallon, but there are 650 cc (22 oz) nitro fuel bottles if you google around.
http://traxxas.com/sites/default/fil...uel-bottle.jpg

jasonn Mar 23, 2014 05:57 AM

That's actually a pretty good idea.

agershon May 7, 2014 11:34 AM

I'm new to my OMP-free RX-7 ... so new that I haven't filled it up with gas yet. I already have two 5 gallon gas cans to have at the track, but I'm thinking out the best way to fill the car up at the gas station.

I bought one of these, the "Hopkins FloTool Spill Saver Measu-Funnel":

http://ws-na.amazon-adsystem.com/wid...ag=fainfaou-20

Here's what I was thinking:

1) Fill up with gas till the pump stops.
2) Check how many gallons went in
3) Using the FloTool (above), add in 1oz per gallon that went in.
4) Top off with gas to wash down the oil.
5) Go drive fast

Does this sound like a reasonable plan?

Tem120 May 7, 2014 12:38 PM

careful with the 4) Top off with gas to wash down the oil. part I accidentallty sprayed myself with gas doing that . I'm a bit paranoid so I always go a bit over 1:1 maybe something like 1.2 :1 to account for anyoil that didn't make its way to the gas tank .

agershon May 7, 2014 12:42 PM


Originally Posted by Tem120 (Post 11732248)
careful with the 4) Top off with gas to wash down the oil. part I accidentallty sprayed myself with gas doing that . I'm a bit paranoid so I always go a bit over 1:1 maybe something like 1.2 :1 to account for anyoil that didn't make its way to the gas tank .

Yup, warning taken. One quick squeeze should do it.

I just don't trust the gas gauge in the car enough. The pump tells you exactly how much you put in so you know exactly how much oil to add.

jasonn May 7, 2014 01:23 PM

I remember reading somewhere that you should put the premix in and at use the gas to mix the premix as it goes in.

agershon May 7, 2014 01:37 PM


Originally Posted by jasonn (Post 11732273)
I remember reading somewhere that you should put the premix in and at use the gas to mix the premix as it goes in.

You mean put the oil in first? Problem is you have to guess how much you'll need.

Sgtblue May 7, 2014 02:48 PM

You're not mixing nitro. Based on their gas gauge reading, most owners can probably guess how many gallons it'll take and add the amount of two-cycle oil accordingly. If you're nervous, err on the side of a little too much.
Honestly, since two-cycle is designed to mix with gas it probably doesn't matter much if it's put in before or after filling up. A couple of corners with a stop or two and it's likely going to be mixed fine.

agershon May 7, 2014 02:55 PM


Originally Posted by Sgtblue (Post 11732352)
You're not mixing nitro. Based on their gas gauge reading, most owners can probably guess how many gallons it'll take and add the amount of two-cycle oil accordingly. If you're nervous, err on the side of a little too much.
Honestly, since two-cycle is designed to mix with gas it probably doesn't matter much if it's put in before or after filling up. A couple of corners with a stop or two and it's likely going to be mixed fine.

This isn't rocket surgery! :lol:

I suppose you could take a guess using the gas gauge and put in the oil first. If you end up taking on more fuel then you expected, dump a couple extra ounces in at the end, right?

Howard Coleman May 7, 2014 04:49 PM

this is kind of a fun thread as there are as many ways to get it done as there are do-ers.

i have a bunch of 4 oz plastic bottles from the ZDDP+ i use. i fill them and they go in a sock. on the street where i am typically adding around 16 gallons of gas i just use two of the bottles.

no syringe:)

just open lid, tilt upside down and gravity works its wonder. the sock works nicely in absorbing any left over oil on the bottles and makes for great optics at the gas station.

howard


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