View Poll Results: to pre mix or not to pre mix
pre mix
405
75.00%
no pre mix
74
13.70%
dumbest thing i ever heard
16
2.96%
go screw yourself for asking
45
8.33%
Voters: 540. You may not vote on this poll
to pre mix or not to pre mix
Eats, Sleeps, Dreams Rotary
iTrader: (1)
Joined: Jul 2001
Posts: 3,383
Likes: 3
From: Stinson Beach, Ca
cbrock, that setup was meant for airplanes which fly at a set RPM for a long time, it may be set to inject the same amount no matter what, or it could be very expensive, however its probably worth looking into.
*edit*
http://www.rotaryaviation.com/oil_in...p_adaptors.htm
Here you go, and you might want to e-mail him for more information as he doesn't mention some things
*edit*
http://www.rotaryaviation.com/oil_in...p_adaptors.htm
Here you go, and you might want to e-mail him for more information as he doesn't mention some things
Last edited by Node; May 29, 2002 at 04:20 AM.
Thats not an FC...
Joined: Apr 2001
Posts: 844
Likes: 0
From: spring hill, Fla
i emaild Rob golden, at pineapple racing and this is what he said:
so, you CAN reduce octane by adding premix oil to it, but it sounds like it takes Alot. im not sure how long ago this was, but it may have been back when they were 12A's using carburetors, seeing as how only the GSL-SE's had fuel injection, and that wasnt until 84. but, they were still racing IMSA/GTU cuz we all have that sticker on our hatch, in the lower left hand corner. the Gold seal of approval.
Scathcart, there really isnt a way to fool the computer on an S5 motor, as far as i can tell. but you CAN switch the front cover to an S4, and run the mechanical OMP, and then install the block off plate, get rid of the lines and injectors and plug up the holes. thats the only trick i know of.
chris
Interesting question! As a general rule for all
engines, anymore octane than the engine needs is a
waste of power. To simplfy, the higher the octane, the
"slower" the burn rate of the fuel. So if your engine
ideally needs 30* of timing and you add higher octane
fuel, you will need to advance the timing to get it to
burn completely. The earlier before TDC you light off
the fuel the longer the rotor or piston has to fight
through the expanding fuel before reaching TDC and
head "down" on the power stroke. During the days of
the IMSA GTU racing, the p port motors originally
smoked badly in the fastest of the rotary cars. Why?
The fast guys found that by adding more oil that was
necessary to the gas lowered the octane!! Low octane,
less ign. timing, less power lost from the rotor
pushing past the expanding gases. If you p port is set
up correctly, it will run just fine on cheap unleaded.
In hot conditions , premium can help prevent vapor
lock. Also if comparing, some race gases contain
additives that enhance power. Depending on how "good"
the gas you get in your area is, the premium may be
better refined, less contaminated so my produce more
power. For the turbo cars, proper tuning goes a long
way. Ralph Friend of Xcessive motorsports makes over
620rwhp on 100 av gas. A daily driver also. Rob
engines, anymore octane than the engine needs is a
waste of power. To simplfy, the higher the octane, the
"slower" the burn rate of the fuel. So if your engine
ideally needs 30* of timing and you add higher octane
fuel, you will need to advance the timing to get it to
burn completely. The earlier before TDC you light off
the fuel the longer the rotor or piston has to fight
through the expanding fuel before reaching TDC and
head "down" on the power stroke. During the days of
the IMSA GTU racing, the p port motors originally
smoked badly in the fastest of the rotary cars. Why?
The fast guys found that by adding more oil that was
necessary to the gas lowered the octane!! Low octane,
less ign. timing, less power lost from the rotor
pushing past the expanding gases. If you p port is set
up correctly, it will run just fine on cheap unleaded.
In hot conditions , premium can help prevent vapor
lock. Also if comparing, some race gases contain
additives that enhance power. Depending on how "good"
the gas you get in your area is, the premium may be
better refined, less contaminated so my produce more
power. For the turbo cars, proper tuning goes a long
way. Ralph Friend of Xcessive motorsports makes over
620rwhp on 100 av gas. A daily driver also. Rob
Scathcart, there really isnt a way to fool the computer on an S5 motor, as far as i can tell. but you CAN switch the front cover to an S4, and run the mechanical OMP, and then install the block off plate, get rid of the lines and injectors and plug up the holes. thats the only trick i know of.
chris
Thats not an FC...
Joined: Apr 2001
Posts: 844
Likes: 0
From: spring hill, Fla
do 1 oz per gallon.
but just for convenience, if i run my tank to Empty, pour in a half QT of oil, then fill it up, so that the incoming fuel will churn up the mix and hopefully evenly distribute the oil.
like i said before, i would do a 1:100 ratio just to be safe. its also beneficial on a Nonturbo since itll lower your octane rating a little more, so youll end up w/ Rotary Race gas!
but just for convenience, if i run my tank to Empty, pour in a half QT of oil, then fill it up, so that the incoming fuel will churn up the mix and hopefully evenly distribute the oil.
like i said before, i would do a 1:100 ratio just to be safe. its also beneficial on a Nonturbo since itll lower your octane rating a little more, so youll end up w/ Rotary Race gas!
Eats, Sleeps, Dreams Rotary
iTrader: (1)
Joined: Jul 2001
Posts: 3,383
Likes: 3
From: Stinson Beach, Ca
get rid of the cats, they're useless lol
But good question, the reason for using 2 stroke oil is so it burns up completely (eliminating carbon in engine, and probably in exhaust too), but I'd hope you wouldn't do it to a point where you chunked some unburnt oil out of your exhaust. But I'm pretty sure you'd notice your engine running like **** if you made that big of a screwup.
But good question, the reason for using 2 stroke oil is so it burns up completely (eliminating carbon in engine, and probably in exhaust too), but I'd hope you wouldn't do it to a point where you chunked some unburnt oil out of your exhaust. But I'm pretty sure you'd notice your engine running like **** if you made that big of a screwup.
Thats not an FC...
Joined: Apr 2001
Posts: 844
Likes: 0
From: spring hill, Fla
nowadays, they make good oil. one of the main sellings points is "ashless" kinds of oil.
also, the watercraft that has been manufactured in the past couple years have catalytic converters on them too. i know for a fact that this model years jet skis ALL have cats on the, and last years did too. im almost positive that the previous year did too.
so im sure its safe as long as you get some nice name brand stuff that meets all the requirements and standards.
chris
also, the watercraft that has been manufactured in the past couple years have catalytic converters on them too. i know for a fact that this model years jet skis ALL have cats on the, and last years did too. im almost positive that the previous year did too.
so im sure its safe as long as you get some nice name brand stuff that meets all the requirements and standards.
chris
20B N/A Wide Body FC3S
Joined: Feb 2001
Posts: 797
Likes: 1
From: Okinawa Japan
Originally posted by ColumbusTurboTwo
well seems to be the accepted ratio is 1 ounce per every gallon but is that counting that you still have your OMP in?
i don't have my OMP period...
well seems to be the accepted ratio is 1 ounce per every gallon but is that counting that you still have your OMP in?
i don't have my OMP period...
I'm glad to see this Is still a hot topic. Guys premix already. You really will benefit large considering you are burning oil that will leave little or no deposits as opposed to convential oil. Also the oil burns evenly where as con' oil probably drips In, let alone If your Oil Injectors are working as I found out only one, yea thats right only 1 was working!
I had my FI's machined cleaned and have not had the slightest Indication that my Injectors were clogged, or whatever. Infact I know notice better start ups, much smoother Idle and quite honestly a slight bit more torque.
For those who want to pre mix, you know the pros/cons to such an application and for those who currently pre mix, I'm sure they will vouch for me 100%.
Pre mix already and stop asking questions that have been answered a million times.
I had my FI's machined cleaned and have not had the slightest Indication that my Injectors were clogged, or whatever. Infact I know notice better start ups, much smoother Idle and quite honestly a slight bit more torque.
For those who want to pre mix, you know the pros/cons to such an application and for those who currently pre mix, I'm sure they will vouch for me 100%.
Pre mix already and stop asking questions that have been answered a million times.
Last edited by silverrotor; Aug 26, 2002 at 08:07 AM.
Thats not an FC...
Joined: Apr 2001
Posts: 844
Likes: 0
From: spring hill, Fla
i do at LEAST 1 oz per Gallon. infact, i run my car down till the Gas light comes on. then i fill it up w/ 86 octane. but before i do, i pour in 1/2 qt. of marine grade 2 cycle oil. usually Pennzoil, the stuff made for oil injection. it turns out to be about 14 gallons. ive ended up w/ 14 and some change, and then 16 oz of oil. so its better than a 1oz:1gal ratio...1:64.
as far as smoking, it doesnt smoke Nearly as bad as everyone says. there may be a little haze when you back peddle the engine after you rev it. but while driving, theres no smoke. thats the nice thing about marine grade oil: its usually smoke free.
it makes the car run smoother, and itll last longer. and i dont feel AS guilty as usual when i run my S4 up to 8k and hit the fuel cut.
enjoy
chris
as far as smoking, it doesnt smoke Nearly as bad as everyone says. there may be a little haze when you back peddle the engine after you rev it. but while driving, theres no smoke. thats the nice thing about marine grade oil: its usually smoke free.
it makes the car run smoother, and itll last longer. and i dont feel AS guilty as usual when i run my S4 up to 8k and hit the fuel cut.
enjoy
chris
Junior Member
Joined: Apr 2001
Posts: 41
Likes: 0
From: Winchester,VA.
I understand in the later year FC's Mazda tightened up the amount of oil that the OMP actually injected to help the cars pass emission regs. In my 1990 N/A I burn less than a quart in 2k miles. I use Penz 10w-30 (the pure base stuff, maybe it burns cleaner) and I also pre-mix with Bel-Ray SI-7. So far so good for the last year.
Rotary Freak
Joined: Dec 2001
Posts: 2,941
Likes: 1
From: sandiego, ca
Just to confuse things I would like to vote NO PRE-MIX for daily street driven cars. Imagine one day you forget to put it in. Then BAMM. Blows smoke. Imagine if you put to much in ( then you will wear out injectors faster) Now what if you your only using 5 gallons or 4.3 or 2 like I always do to keep my car light , you would have to sit thier and figure out how much your putting in. So you have to by a turkey baster thing so you now what an ounce is. Then what if you lose that or it gets dirty from floping around in your car???
Thier has been many many cars with 170-220k miles on them using the Mech or Elec OMP. My sugestion is to use the right brand oil. (GTX- 10w-30 or 20w-50 in my case) then if your really worried go get blaster coils and MSD box to burn that **** up.
Thier has been many many cars with 170-220k miles on them using the Mech or Elec OMP. My sugestion is to use the right brand oil. (GTX- 10w-30 or 20w-50 in my case) then if your really worried go get blaster coils and MSD box to burn that **** up.
Full Member
Joined: Mar 2002
Posts: 169
Likes: 0
From: Utah
Unless I'm blind I haven't seen this link posted yet.
So here it is... don't think there is much info that hasn't already been stated, but oh well.
http://fc3s-pro.com/TECH/FAQ/premix.htm
Fikshun
So here it is... don't think there is much info that hasn't already been stated, but oh well.
http://fc3s-pro.com/TECH/FAQ/premix.htm
Fikshun
Thats not an FC...
Joined: Apr 2001
Posts: 844
Likes: 0
From: spring hill, Fla
um, to sum up 3 pages of posts; No, premix wont hurt your T2.
Premix isnt that bad unless your lazy and dont know how to Cipher numbers in your head. its Simple, One Oz. of oil for every gallon of Gas. Err on the safe side, thats a little bit more oil than the 1:100 ratio as stated before. its more like 1:64 but its extra protection and more HP (for us NA guys)
Be wary Turbo guys, Oil will effectivley reduce your octane rating, so if you use TOO much, it will harm your Turbo II.
On an S5 car, i would use premix all the time since it uses an Electric OMP which can fail very suddenly as opposed to the S4's standard OMP which will gradually fail over time and give you some indication of danger.
but its almost like a preference of saying To-MAY-toh or To-MAH-toh...or Po-TAY-toh or Po-TAH-toh. There is no right or wrong, relatively speaking. so, try it and have fun and be careful kiddies
Chris
Premix isnt that bad unless your lazy and dont know how to Cipher numbers in your head. its Simple, One Oz. of oil for every gallon of Gas. Err on the safe side, thats a little bit more oil than the 1:100 ratio as stated before. its more like 1:64 but its extra protection and more HP (for us NA guys)
Be wary Turbo guys, Oil will effectivley reduce your octane rating, so if you use TOO much, it will harm your Turbo II.
On an S5 car, i would use premix all the time since it uses an Electric OMP which can fail very suddenly as opposed to the S4's standard OMP which will gradually fail over time and give you some indication of danger.
but its almost like a preference of saying To-MAY-toh or To-MAH-toh...or Po-TAY-toh or Po-TAH-toh. There is no right or wrong, relatively speaking. so, try it and have fun and be careful kiddies
Chris
wait a second.....aren't there 128 ounces per galon? therefore if u do one ouncer per galons uar about 128:1
which is between the norm for street fcars 100:1 and 150:1 on that premix article.
which is between the norm for street fcars 100:1 and 150:1 on that premix article.