Sohn Adapter and Pre mix
#53
Smoking turbo yay
I mean why get rid of OMP if there is Sohn adapter?
I also believe the 8 injects a little bit of fuel even when engine braking. I have a bluetooth OBD2 that can read/guess instant fuel consumption. I believe someone else also confirmed this.
I also believe the 8 injects a little bit of fuel even when engine braking. I have a bluetooth OBD2 that can read/guess instant fuel consumption. I believe someone else also confirmed this.
#55
Premix
And this is the Premix I use that they suggested. I started with idimitzu or w.e. it's call but they said there no point on wasting alot of money when it's does the same thing. That stuff like the above will do the job
Also heard from a rotary specialist that premix is good since you don't get oil on idle so having the premix ensures that u always have lubricant. Was suggested by them a 1:1 ratio so one once to every gallon. So when I add 8 gallons I add 8 oz. My rx8 has been running for the past 2 years with no problems. Have been doing the Redlines and reg oil changes as well. I still have the brand new sohn John unopened in it's original packaging it came in 2 years ago. I'm definitely not going to install it since it is not a good idea to install it from what the specialists say
Last edited by ChaosReaper; 03-15-2019 at 05:09 PM.
#56
Registered
iTrader: (1)
Never speak to this "specialist" again. That's TCW3 oil, it's not doing any actual lubricating because it's not rated for rotary temperatures.
I don't know what Stihl oil rates, but you're looking for FC/FD certification. There are plenty affordable options that aren't Idemitsu.
Neither chainsaws nor seadoos have catalytic converters, nor high compression rotaries. Just because an oil works there doesn't mean it works here in long term.
I don't know what Stihl oil rates, but you're looking for FC/FD certification. There are plenty affordable options that aren't Idemitsu.
Neither chainsaws nor seadoos have catalytic converters, nor high compression rotaries. Just because an oil works there doesn't mean it works here in long term.
#57
Smoking turbo yay
And this is the Premix I use that they suggested. I started with idimitzu or w.e. it's call but they said there no point on wasting alot of money when it's does the same thing. That stuff like the above will do the job
Also heard from a rotary specialist that premix is good since you don't get oil on idle so having the premix ensures that u always have lubricant. Was suggested by them a 1:1 ratio so one once to every gallon. So when I add 8 gallons I add 8 oz. My rx8 has been running for the past 2 years with no problems. Have been doing the Redlines and reg oil changes as well. I still have the brand new sohn John unopened in it's original packaging it came in 2 years ago. I'm definitely not going to install it since it is not a good idea to install it from what the specialists say
Also, 1 ounce per gallon is a bit too much unless you track or run without OMP. Premix can lower octane a bit so you don't want too much for DD. Half an ounce per gallon will be fine. That's how I have always done it for the last 2 years.
There are some talks about Sohn adapter not delivering enough oil under track conditions, but for DD it's sufficient. I didn't dig that much into it because I have an S2.
#58
///// Upscale Zoom-Zoom
STIHL has always been JASO FC then now FD rated 2-stroke oil. I have never figured out who has been supplying them the 2-stroke oil but nonetheless it is of good quality. To second others comments, TCW3 oil is not to be used for any purpose other than 2-stroke watercraft engines period.
#59
I decided to use the Stihll 2 stroke oil as it is convenient. It comes in either 50 ml or 100ml bottles so I use the 50ml bottle when I fill up and at a full 60 litres that would be 600:1. As the tank is never fully empty the 50ml I use can be anywhere from 600:1 to whatever the ratio is if I fill up with 40 litres. I also would have no hesitation in using Echo 2 stroke oil or Husquevarna but those dealers are not near me.
Realizing the infinite variety of opinions on this issue' it would seem that what is best is entirely personal, and practical if it works reliably; but any oil used must meet the minimum temperature requirements. Typically my OBD2 sensor says the EGT is about 1600F at cruise. I don't know what the EGT is on a chainsaw but you can bet it works hard and flat out all the time; a chainsaw engine life is about 350-400 hours. On a heavy duty turbocharged diesel tractor engine the EGT ran at 1300-1400F.
My reason for using this minor premix ratio is to add a bit of insurance (not much as I didn't want the CAT affected) and as I indicated I would never disable the factory oil delivery system. The dealer put 5w30 Mazda oil in on the last February oil change. The reason I mentioned the earlier 2 stroke Saab engine was the potential damage on high RPM with closed throttle using only a premix lubrication system.
Realizing the infinite variety of opinions on this issue' it would seem that what is best is entirely personal, and practical if it works reliably; but any oil used must meet the minimum temperature requirements. Typically my OBD2 sensor says the EGT is about 1600F at cruise. I don't know what the EGT is on a chainsaw but you can bet it works hard and flat out all the time; a chainsaw engine life is about 350-400 hours. On a heavy duty turbocharged diesel tractor engine the EGT ran at 1300-1400F.
My reason for using this minor premix ratio is to add a bit of insurance (not much as I didn't want the CAT affected) and as I indicated I would never disable the factory oil delivery system. The dealer put 5w30 Mazda oil in on the last February oil change. The reason I mentioned the earlier 2 stroke Saab engine was the potential damage on high RPM with closed throttle using only a premix lubrication system.
#60
Smoking turbo yay
I decided to use the Stihll 2 stroke oil as it is convenient. It comes in either 50 ml or 100ml bottles so I use the 50ml bottle when I fill up and at a full 60 litres that would be 600:1. As the tank is never fully empty the 50ml I use can be anywhere from 600:1 to whatever the ratio is if I fill up with 40 litres. I also would have no hesitation in using Echo 2 stroke oil or Husquevarna but those dealers are not near me.
Realizing the infinite variety of opinions on this issue' it would seem that what is best is entirely personal, and practical if it works reliably; but any oil used must meet the minimum temperature requirements. Typically my OBD2 sensor says the EGT is about 1600F at cruise. I don't know what the EGT is on a chainsaw but you can bet it works hard and flat out all the time; a chainsaw engine life is about 350-400 hours. On a heavy duty turbocharged diesel tractor engine the EGT ran at 1300-1400F.
My reason for using this minor premix ratio is to add a bit of insurance (not much as I didn't want the CAT affected) and as I indicated I would never disable the factory oil delivery system. The dealer put 5w30 Mazda oil in on the last February oil change. The reason I mentioned the earlier 2 stroke Saab engine was the potential damage on high RPM with closed throttle using only a premix lubrication system.
Realizing the infinite variety of opinions on this issue' it would seem that what is best is entirely personal, and practical if it works reliably; but any oil used must meet the minimum temperature requirements. Typically my OBD2 sensor says the EGT is about 1600F at cruise. I don't know what the EGT is on a chainsaw but you can bet it works hard and flat out all the time; a chainsaw engine life is about 350-400 hours. On a heavy duty turbocharged diesel tractor engine the EGT ran at 1300-1400F.
My reason for using this minor premix ratio is to add a bit of insurance (not much as I didn't want the CAT affected) and as I indicated I would never disable the factory oil delivery system. The dealer put 5w30 Mazda oil in on the last February oil change. The reason I mentioned the earlier 2 stroke Saab engine was the potential damage on high RPM with closed throttle using only a premix lubrication system.
I dump in 200~220 mL every time I fill up about 50~55 L of gas at the mentioned 1:250 ratio.
#63
Smoking turbo yay
#64
Water Foul
#65
#66
Water Foul
Here is a generic target AFR table I let Tuner Studio create for my Miata's engine. (The actual table I run is quite a bit leaner all over.) The bottom row is the no load (foot off the pedal) area, which the software defaults to stoich or a little leaner.
Here is an actual volumetric efficiency table I ran for a while during the tuning process. Look at the bottom row again. See how much leaner it is than the other rows? It is richer at higher RPM due to the potential danger there. It goes leaner in the middle to save fuel, then goes richer at lower RPM to smoothly slide into idle fueling without stalling due to being too lean. On that row only, I deviated from the target AFR table to save fuel, because there is little chance of detonation in the middle of that row. The rest of the VE table is tuned to closely match the target AFR table.
The point is, there is always fuel being supplied to a running engine. There are no zeros in the fuel map.
Last edited by Steve Dallas; 03-20-2019 at 09:52 PM.
The following users liked this post:
UnknownJinX (03-20-2019)
#68
Premixing with Sohn Adapter
Hi, do I have to use the same 2 stroke oil in my Sohn Adapter and what I mix in with the gas?
Im currently am using Ams Oil in my Sohn adapter and nevered premixed. I recently just bought the car. The old owner never told me about premixing.
Im currently am using Ams Oil in my Sohn adapter and nevered premixed. I recently just bought the car. The old owner never told me about premixing.
#70
What am I doing here?
Join Date: Mar 2006
Location: 2017 Miata RF Launch Edition
Posts: 3,606
Received 649 Likes
on
510 Posts
JASO FD is also identical to ISO-L-EGD (sometimes just ISO GD or ISO EGD).
https://www.motor-talk.de/forum/akti...hmentId=683876
API TC will also work but the additive package may have metals. Incombustible metals + carbon = ash. Also, the metals may act as a catalyst poison and result in a P0420 after prolonged use (though probably won't do anything to the structure of the catalyst bed).
https://www.motor-talk.de/forum/akti...hmentId=683876
API TC will also work but the additive package may have metals. Incombustible metals + carbon = ash. Also, the metals may act as a catalyst poison and result in a P0420 after prolonged use (though probably won't do anything to the structure of the catalyst bed).
#72
///// Upscale Zoom-Zoom
Use any JASO rated FD (or JASO FC) premix (2-cycle oil). I buy the cheapest JASO FD rated 2 stroke oil I can find. Menards had a great deal on Citgo Mystic JASO FD rated oil for $16.99 per large bottle (I think it was 5 L).
#73
What am I doing here?
Join Date: Mar 2006
Location: 2017 Miata RF Launch Edition
Posts: 3,606
Received 649 Likes
on
510 Posts
JASO FD is also identical to ISO-L-EGD (sometimes just ISO GD or ISO EGD).
https://www.motor-talk.de/forum/akti...hmentId=683876
API TC will also work but the additive package may have metals. Incombustible metals + carbon = ash. Also, the metals may act as a catalyst poison and result in a P0420 after prolonged use (though probably won't do anything to the structure of the catalyst bed).
https://www.motor-talk.de/forum/akti...hmentId=683876
API TC will also work but the additive package may have metals. Incombustible metals + carbon = ash. Also, the metals may act as a catalyst poison and result in a P0420 after prolonged use (though probably won't do anything to the structure of the catalyst bed).
#74
///// Upscale Zoom-Zoom
...just do not use TCW3 (TCW-3) rated 2-cycle oils...ever...
The following users liked this post:
StealthTL (10-03-2019)