confused about s5 premix
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flat black fury
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confused about s5 premix
ok ive been thinking of going premix but with the s5 omp being electrical it throws the ecu into limp mode when removed. now in searching ive found that people just buy rtek and be done with it but my question is..without buying rtek what other ways are there around it? most stuff ive found is for s4's.
#6
Cake or Death?
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There is a setup available that sandwiches between the OMP and the front cover- the pump is still driven but the stock oil feed is blocked off, replaced with a nipple fed from an external tank.
Run premix in the tank and you have the best of both worlds...a functional OMP that injects premix instead of engine oil.
I admit I haven't tried this yet but it seems like a pretty elegant solution.
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#9
flat black fury
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No, there is another way to do it, which is what I'm considering.
There is a setup available that sandwiches between the OMP and the front cover- the pump is still driven but the stock oil feed is blocked off, replaced with a nipple fed from an external tank.
Run premix in the tank and you have the best of both worlds...a functional OMP that injects premix instead of engine oil.
I admit I haven't tried this yet but it seems like a pretty elegant solution.
There is a setup available that sandwiches between the OMP and the front cover- the pump is still driven but the stock oil feed is blocked off, replaced with a nipple fed from an external tank.
Run premix in the tank and you have the best of both worlds...a functional OMP that injects premix instead of engine oil.
I admit I haven't tried this yet but it seems like a pretty elegant solution.
#10
Engine, Not Motor
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Assuming it's working, why not just leave the stock system in place?
Your car has been fine for between 15 and 18 years without premix, and running it now is going to make no difference.
Your car has been fine for between 15 and 18 years without premix, and running it now is going to make no difference.
#11
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Originally Posted by villin
I don't think that is a good idea personally. I mean if your injecting premix then your changing which defeats the point of premixing.
Originally Posted by Aaron Cake
Your car has been fine for between 15 and 18 years without premix, and running it now is going to make no difference.
#12
Cake or Death?
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If one accepts this, then the mod I posted would seem useful or at the very least, not demonstrably harmful, no?
Besides, I have to wonder if the final implementation of the OMP wasn't arrived at with end user failsafes as a major consideration.
Injecting engine oil meant that Joe Sixpack needn't do anything but check the dipstick and pour more Castrol in when necessary instead of monitoring a second tank which required a completely different type of lubricant...especially a type of oil not commonly found at the local Exxon station.
I wonder if Legal and Marketing had any input into this as it seems likely that Engineering would have loved the idea of using a more suitable oil for the OMP, convenience be damned.
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Yes and no...
My car (86 na) is 21yrs old and well I got it with 70K on the clock (well just over) if the car only has 70K on the clock then I think using premix NOW could benifit the engine alot.. especially if u are the type of person who also seafoams the engine..
Now on my 89' it has over 150K and well I would agre there that right now premix on that car is mostlikley irrelevant but it cant hurt either way..
#15
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Originally Posted by clokker
There appears to some valid anecdotal evidence of the benefits of premixing when used from the get go on a newly rebuilt engine, though.
If one accepts this, then the mod I posted would seem useful or at the very least, not demonstrably harmful, no?
I wonder if Legal and Marketing had any input into this as it seems likely that Engineering would have loved the idea of using a more suitable oil for the OMP, convenience be damned.
#16
Cake or Death?
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The adaptor plate already exists.
The oil line is not pressurized so almost anything would work.
I've been looking at the oil tank from a Yamaha RZ series as the reservoir.
It's plastic and it already comes with a simply wired level sensor (just a light when the level drops to a certain point).
Fairly large capacity, although I haven't begun to do the math pertaining to normal consumption so no idea yet about filling intervals.
If the shape of the tank become problematical there are lots of two stroke bikes to look at for donors- perhaps another one would be better.
Obviously, I am only in the initial stages of planning and much depends on other mods happening first but so far, it really seems pretty straightforward.
#17
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Nor can I but the execution would not be terribly difficult.
The adaptor plate already exists.
The oil line is not pressurized so almost anything would work.
I've been looking at the oil tank from a Yamaha RZ series as the reservoir.
It's plastic and it already comes with a simply wired level sensor (just a light when the level drops to a certain point).
Fairly large capacity, although I haven't begun to do the math pertaining to normal consumption so no idea yet about filling intervals.
If the shape of the tank become problematical there are lots of two stroke bikes to look at for donors- perhaps another one would be better.
Obviously, I am only in the initial stages of planning and much depends on other mods happening first but so far, it really seems pretty straightforward.
The adaptor plate already exists.
The oil line is not pressurized so almost anything would work.
I've been looking at the oil tank from a Yamaha RZ series as the reservoir.
It's plastic and it already comes with a simply wired level sensor (just a light when the level drops to a certain point).
Fairly large capacity, although I haven't begun to do the math pertaining to normal consumption so no idea yet about filling intervals.
If the shape of the tank become problematical there are lots of two stroke bikes to look at for donors- perhaps another one would be better.
Obviously, I am only in the initial stages of planning and much depends on other mods happening first but so far, it really seems pretty straightforward.
Rotary Aviation makes the adapter that goes b/t the cover and the omp to act as the pump. Others use the original omp but it takes just a small bit of fabrication.
You really need to think just WHERE this reservoir is going to be installed. Look around a turboII engine bay. Ain't much room there, plus, and this is just a personal observation, if the tank is located above the oil injectors, the oil will siphon into the rotors over night. Not all the oil, but enough to make the car smoke in the moring for a moment. Not desireable in my vey humble opinion. The reservoir needs to be located below the oil injectors. Others disagree.
#18
Cake or Death?
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You really need to think just WHERE this reservoir is going to be installed. Look around a turboII engine bay. Ain't much room there, plus, and this is just a personal observation, if the tank is located above the oil injectors, the oil will siphon into the rotors over night. Not all the oil, but enough to make the car smoke in the moring for a moment. Not desireable in my vey humble opinion. The reservoir needs to be located below the oil injectors. Others disagree.
I'm not sure about your siphoning theory but positioning the reservoir might take some work- not too high yet not too low.
We'll see.
#19
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There is NO check valve in the omp or the oil injector (not counting the rubber one in the injector for air). So if the liquid is higher than the inlet hole at the injector, there's nothing to stop the flow into the rotor chamber.
I HAD a reservoir made out of a propane torch bottle and had it where the old charcoal reservoir was. Nipple was at the bottom gong to the omp. Drilled and tapped a hole in the top for filling and had a dip stick made out of a old welding rod.
That arrangement fell out of favor this week. I think it had 32oz in volume, but I got the smoke in the morning. IF I moved the supply to a lower point there was no smoke for weeks. Reinstall the tank back where it was and the next morning....smoke in the morning. Plus I observeved the oil level at the end of the day vs the morning. Lower.
Gravity. My enemy.
There's other ways to mix without using bottles each fillup. Like a gallon tank in the spare tire area with a windshield washer pump at the bottom and the feed line into the vent line on the gas fill tube.
I HAD a reservoir made out of a propane torch bottle and had it where the old charcoal reservoir was. Nipple was at the bottom gong to the omp. Drilled and tapped a hole in the top for filling and had a dip stick made out of a old welding rod.
That arrangement fell out of favor this week. I think it had 32oz in volume, but I got the smoke in the morning. IF I moved the supply to a lower point there was no smoke for weeks. Reinstall the tank back where it was and the next morning....smoke in the morning. Plus I observeved the oil level at the end of the day vs the morning. Lower.
Gravity. My enemy.
There's other ways to mix without using bottles each fillup. Like a gallon tank in the spare tire area with a windshield washer pump at the bottom and the feed line into the vent line on the gas fill tube.
#20
Banned. I got OWNED!!!
^^ That's a clever idea.
I haven't tested what Hailers mentioned about the 2-stroke getting pushed into the combustion chamber but I have a cure, first though I spoke directly with Richard Sohn (who produces said adapters after conversing with Hailers about this very problem). He told me that he had recieved a few complaints just like that. He tested a few OMPs and held the resevior 36" above the nozzles and he couldn't get any to leak after sitting for days on end. This leads me to believe that it is going to be car specific. Some will have the problem, others won't.
Regardless, the way to combat it is to build your own injection lines from parts easily obtained from GoodRidge or any other source and take a lesson from one of my teachers - the Marine Industry. We like to loop lines that exit around sea-level for exhausts and bilge pumps and live well tanks WELL above sea-level so a siphon can't start. In other words, if the line goes above the level in the tank, the siphon can't start.
I bought a tank originally designed as a power-steering resevoir, welded some tabs on and ran with it. I'm changing my mind about it and plan to sump it, add a baffle, and adjust the low level sender that I found @ an aviation supply. Wiring it in with the low sump oil light and sending that signal to the Motec which will limit RPM's and shout off the alarms.
For the amount of oil that it should hold..... well.... the going rec. seems to be run it @ 128:1 which means 1/2 qt per tank of gas. OK, the OMP injects sump oil at about a qt/500-3000 miles. That equates to anywhere from ~250:1 - 600:1 meaning you need between 3.5 & 8 oz. I'm a belt and suspenders guy so I went with the 16oz, I also decided that I don't want the thing to fall below half empty, so I doubled it. I have a qt tank and it's actually getting a weee bit bigger with the sump but whatever. Daddy doesn't want any airbubbles in his -6 feed. I actually figured out that there is enough volume in the line alone to run through a gallon of gas @ 128:1. Overkill maybe but whatever....
Heres a pic of the original tank
I haven't tested what Hailers mentioned about the 2-stroke getting pushed into the combustion chamber but I have a cure, first though I spoke directly with Richard Sohn (who produces said adapters after conversing with Hailers about this very problem). He told me that he had recieved a few complaints just like that. He tested a few OMPs and held the resevior 36" above the nozzles and he couldn't get any to leak after sitting for days on end. This leads me to believe that it is going to be car specific. Some will have the problem, others won't.
Regardless, the way to combat it is to build your own injection lines from parts easily obtained from GoodRidge or any other source and take a lesson from one of my teachers - the Marine Industry. We like to loop lines that exit around sea-level for exhausts and bilge pumps and live well tanks WELL above sea-level so a siphon can't start. In other words, if the line goes above the level in the tank, the siphon can't start.
I bought a tank originally designed as a power-steering resevoir, welded some tabs on and ran with it. I'm changing my mind about it and plan to sump it, add a baffle, and adjust the low level sender that I found @ an aviation supply. Wiring it in with the low sump oil light and sending that signal to the Motec which will limit RPM's and shout off the alarms.
For the amount of oil that it should hold..... well.... the going rec. seems to be run it @ 128:1 which means 1/2 qt per tank of gas. OK, the OMP injects sump oil at about a qt/500-3000 miles. That equates to anywhere from ~250:1 - 600:1 meaning you need between 3.5 & 8 oz. I'm a belt and suspenders guy so I went with the 16oz, I also decided that I don't want the thing to fall below half empty, so I doubled it. I have a qt tank and it's actually getting a weee bit bigger with the sump but whatever. Daddy doesn't want any airbubbles in his -6 feed. I actually figured out that there is enough volume in the line alone to run through a gallon of gas @ 128:1. Overkill maybe but whatever....
Heres a pic of the original tank
Last edited by TitaniumTT; 07-06-07 at 05:25 PM.
#21
Still has an RX7.
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No, there is another way to do it, which is what I'm considering.
There is a setup available that sandwiches between the OMP and the front cover- the pump is still driven but the stock oil feed is blocked off, replaced with a nipple fed from an external tank.
Run premix in the tank and you have the best of both worlds...a functional OMP that injects premix instead of engine oil.
I admit I haven't tried this yet but it seems like a pretty elegant solution.
There is a setup available that sandwiches between the OMP and the front cover- the pump is still driven but the stock oil feed is blocked off, replaced with a nipple fed from an external tank.
Run premix in the tank and you have the best of both worlds...a functional OMP that injects premix instead of engine oil.
I admit I haven't tried this yet but it seems like a pretty elegant solution.
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