Gas/Oil Premix Thread
08-03-2007, 09:01 AM
#451
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08-03-2007, 11:25 AM
#452
Got Another Rotary
http://www.mxdeals.com/oil-2stroke-r...dfire-pj1.html <--- is this stuff okay? I can find it at the local Canadian Tire.
08-03-2007, 03:58 PM
#453
Wow, that is some oily gas! 21oz to the tank! That is almost 3 times as much as I use and I considered 8oz as a maximum!
77:1 is 10 oz to 6 gallons.
I do about 200:1, which is 8oz to 13 gallons of gas.
Neither of those numbers considered that amount injected by the OMP.
Rick Engman suggest 100:1 as a maximum.
77:1 is 10 oz to 6 gallons.
I do about 200:1, which is 8oz to 13 gallons of gas.
Neither of those numbers considered that amount injected by the OMP.
Rick Engman suggest 100:1 as a maximum.
08-03-2007, 04:07 PM
#454
It is worthwhile to note that I have upped my dosage to 10 oz per 14 gallons or about 180:1 (not including the OMP amount) and have seen an even further increase in idle vacuum.
08-03-2007, 04:22 PM
#455
Got Another Rotary
Yeah, the way the claim is stated, it sounds like they varied the oil value up and down until it normalized power output.
It is worthwhile to note that I have upped my dosage to 10 oz per 14 gallons or about 180:1 (not including the OMP amount) and have seen an even further increase in idle vacuum.
It is worthwhile to note that I have upped my dosage to 10 oz per 14 gallons or about 180:1 (not including the OMP amount) and have seen an even further increase in idle vacuum.
Are you catless?
08-03-2007, 04:35 PM
#458
Got Another Rotary
08-05-2007, 06:19 PM
#459
can't find Idemitsu but a motrocycle shop down the road has Amsoil . However not the saber one that people here seem to like . Had choice between the "Dominator" 50:1 racing mix or the HP Injector and found this chart but still not sure which would be better - anyone have a clue ? Planning to use only on track days ......
Last edited by Brettus; 08-05-2007 at 06:41 PM.
08-05-2007, 08:55 PM
#460
08-06-2007, 10:38 AM
#462
Got Another Rotary
can't find Idemitsu but a motrocycle shop down the road has Amsoil . However not the saber one that people here seem to like . Had choice between the "Dominator" 50:1 racing mix or the HP Injector and found this chart but still not sure which would be better - anyone have a clue ? Planning to use only on track days ......
I use Idemitsu, but Saber Pro is an excellent choice as well
08-07-2007, 10:45 AM
#464
Got Another Rotary
As long as you do not have a cat - racing versions can have additives that will kill you cat quickly if you have one.
08-13-2007, 04:18 PM
#465
So after reading so much about premixing, I've decided to start doing it myself and bought some idemitsu premix. Quick question though........ do you add the premix before refueling, after filling the tank, or does it not really matter.
thanks and sorry for the ignorant question! This is my first rotary powered car and im learning more and more everyday!!
thanks and sorry for the ignorant question! This is my first rotary powered car and im learning more and more everyday!!
08-13-2007, 04:28 PM
#466
Metatron
iTrader: (1)
You would want to put it in early, so it could be mixed by the filling action. Too late will send it to the bottom in a "lump".
I put two gallons of fuel in before the oil. A couple of times the pump is empty/out of service, if you dump the oil in then find the pump won't work, you would have to drive on a really rich mixture.....
S
I put two gallons of fuel in before the oil. A couple of times the pump is empty/out of service, if you dump the oil in then find the pump won't work, you would have to drive on a really rich mixture.....
S
08-13-2007, 04:45 PM
#468
Metatron
iTrader: (1)
Eventually, anything will mix, but optimally you would want it mixed by the incoming fuel..
If the tank is full and you pour in straight two-stroke oil, it will go straight to the bottom and stay there for quite a while.
S
If the tank is full and you pour in straight two-stroke oil, it will go straight to the bottom and stay there for quite a while.
S
08-13-2007, 08:03 PM
#469
please read my long post on the "OMP adjustment" thread under the Major HP thread. I finally dissected a pump and got to the actual filter. I firmly believe now that premix will accelerate filter occulsion. Not saying dont do it, what i am saying is that the out put of your fuel pump is going to be affected sooner or later.
let the discussion begen.
olddragger
let the discussion begen.
olddragger
08-19-2007, 07:40 PM
#474
ok i took this a step futher. I went to a local man here for a second opinion.
I showed him the parts etc. This is what he said.
1-- i have never seen one of those damn things!
2- the filter itself really didnt look that bad
3- the sock didnt look bad at all
So he did a crude visual leak down on the sock and fuel filter medium. The sock was good, the filter was slower than what he thought it should be BUT he said he was not an expert pn RX8 filters.
Now this guy wanted to remain nameless but he has lots of experience with car systems. Street and racing. His thoughts where this.
He said many cars with the all in one module that includes a small container in which it keeps gas around the pump have problems with dirty gas. The sediment in the dirty gas tend to settle in these small areas/containers. This he speculates would be more of an issue with pre mixed gas. The sediment plus oily gas is "staying " around the pump more and eventually finding its way into the pump causing damage. Since the filter in this module is AFTER the pump then he thought the pump itself is the culprit. This would support Bill's findings earlier this year after measuring my symptomatic pump output(down approx 30%.)
Guess we are getting dirty gas in Georgia.
olddragger
I showed him the parts etc. This is what he said.
1-- i have never seen one of those damn things!
2- the filter itself really didnt look that bad
3- the sock didnt look bad at all
So he did a crude visual leak down on the sock and fuel filter medium. The sock was good, the filter was slower than what he thought it should be BUT he said he was not an expert pn RX8 filters.
Now this guy wanted to remain nameless but he has lots of experience with car systems. Street and racing. His thoughts where this.
He said many cars with the all in one module that includes a small container in which it keeps gas around the pump have problems with dirty gas. The sediment in the dirty gas tend to settle in these small areas/containers. This he speculates would be more of an issue with pre mixed gas. The sediment plus oily gas is "staying " around the pump more and eventually finding its way into the pump causing damage. Since the filter in this module is AFTER the pump then he thought the pump itself is the culprit. This would support Bill's findings earlier this year after measuring my symptomatic pump output(down approx 30%.)
Guess we are getting dirty gas in Georgia.
olddragger
08-19-2007, 11:40 PM
#475
wow,
i thought that was my idea at the begining of one of these threads... and thanks denny..
beers
i thought that was my idea at the begining of one of these threads... and thanks denny..
beers
ok i took this a step futher. I went to a local man here for a second opinion.
I showed him the parts etc. This is what he said.
1-- i have never seen one of those damn things!
2- the filter itself really didnt look that bad
3- the sock didnt look bad at all
So he did a crude visual leak down on the sock and fuel filter medium. The sock was good, the filter was slower than what he thought it should be BUT he said he was not an expert pn RX8 filters.
Now this guy wanted to remain nameless but he has lots of experience with car systems. Street and racing. His thoughts where this.
He said many cars with the all in one module that includes a small container in which it keeps gas around the pump have problems with dirty gas. The sediment in the dirty gas tend to settle in these small areas/containers. This he speculates would be more of an issue with pre mixed gas. The sediment plus oily gas is "staying " around the pump more and eventually finding its way into the pump causing damage. Since the filter in this module is AFTER the pump then he thought the pump itself is the culprit. This would support Bill's findings earlier this year after measuring my symptomatic pump output(down approx 30%.)
Guess we are getting dirty gas in Georgia.
olddragger
I showed him the parts etc. This is what he said.
1-- i have never seen one of those damn things!
2- the filter itself really didnt look that bad
3- the sock didnt look bad at all
So he did a crude visual leak down on the sock and fuel filter medium. The sock was good, the filter was slower than what he thought it should be BUT he said he was not an expert pn RX8 filters.
Now this guy wanted to remain nameless but he has lots of experience with car systems. Street and racing. His thoughts where this.
He said many cars with the all in one module that includes a small container in which it keeps gas around the pump have problems with dirty gas. The sediment in the dirty gas tend to settle in these small areas/containers. This he speculates would be more of an issue with pre mixed gas. The sediment plus oily gas is "staying " around the pump more and eventually finding its way into the pump causing damage. Since the filter in this module is AFTER the pump then he thought the pump itself is the culprit. This would support Bill's findings earlier this year after measuring my symptomatic pump output(down approx 30%.)
Guess we are getting dirty gas in Georgia.
olddragger