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pre mix for track days?

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Old 12-24-2005, 09:58 PM
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pre mix for track days?

ok forum Gods. WHat are the thoughts on this topic? On the track staying in the higher RPMS is common (over 6k). We can log 175 to 350 track miles on a w/e. I have been thinking about the oil supply at those rpm's. I know RB has the pump mod but would a good pre mix help on these track w/es? If so what concentration would be recommended? I know some pre mix discussion has been posted but it all concerned daily driving.
Thoughts---recommendations??
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Old 12-24-2005, 10:26 PM
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ummm, I wouldnt run premix unless you pulled the oil metering pumps out of the engine. The amount of oil that would be in the gas wouldn't do you any favors. Only people I know who run premix have hardcore 7's with oil metering pumps out.
Old 12-24-2005, 10:34 PM
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1/2 oz. per gallon of fuel, which gives you 1:256 ratio, you wouldn't want to go heavier unless you dump the cat converter and then only for a highly modified race engine with the metering pump removed, this ratio is recommended in addition to the metering pump being operational

since the Wankel engine depends on lubrication for compression sealing it makes sense to me, recommend a rotary-specific low-ash pre-mix oil such as Idemitsu rather than a generic 2-cycle oil

http://www.idemitsu-usa.com/page_214.htm

Last edited by TeamRX8; 12-24-2005 at 10:37 PM.
Old 12-24-2005, 11:08 PM
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My thoughts also. I have read that there is some concern with the
oil supply at SUBSTAINED high rpm. I have ran 4ozs in 12 gal and i do swear the engine felt smoother with a better idle.
Old 12-24-2005, 11:10 PM
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to continue--- I ran a yamaha synthetic motorcyle racing pre mix oil. Couldnt feel a lost of power or anything. It's just lodgical to me.
I think I will add this to my track prep list.
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Old 12-24-2005, 11:13 PM
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hmmm. if it will help my engine I would rock it
Old 12-24-2005, 11:17 PM
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for track it should be fine, not necessary or desired for daily driving
Old 12-25-2005, 12:29 AM
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I also use the Yamalube product. Even on the street, 3 ounces per fill-up.
Old 12-25-2005, 08:43 AM
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I started adding oil to the gas tank when I was racing my 1st Gen RX7. This was in conjunction with the oil metering rods. I did later lose compression on one of the rotors, but this wasn't due to the additional oil.
Old 12-25-2005, 12:42 PM
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sound like others are also thinking of this.
I think i will do mine on just track days. 4oz's to 12 gals sound ok? or 5 to the 15 gals i guess. I will miss my white tailpipes.
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Old 12-25-2005, 01:13 PM
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You get white tail pipes when on the track?
Old 12-25-2005, 04:42 PM
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I run synthetic 2 stroke oil as well on the track 6OZ to a full tank. I figure it can't hurt....and the tank of fuel only lasts for the day anyway if I'm lucky
Old 12-25-2005, 07:40 PM
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yes my pipes turn white after track days
OD
Old 12-25-2005, 08:56 PM
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Originally Posted by olddragger
yes my pipes turn white after track days
OD
same for me, I think the high exhaust temps burn the smoot out of the pipes
Old 12-26-2005, 03:58 PM
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Originally Posted by olddragger
yes my pipes turn white after track days
OD
White tips rule
Attached Thumbnails pre mix for track days?-dsc-173.jpg  
Old 12-26-2005, 04:04 PM
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Originally Posted by BlueRenesis82
ummm, I wouldnt run premix unless you pulled the oil metering pumps out of the engine. The amount of oil that would be in the gas wouldn't do you any favors. Only people I know who run premix have hardcore 7's with oil metering pumps out.

I run it in in 1st gen RX-7, but I have removed the oil metering pump. I've got several graduated containers for the oil if you want me to bring a couple to the "Trackday of Debauchery" on the 21st.
Old 12-26-2005, 05:21 PM
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hey man, hope you had a Merry Christmas.
I also have some stuff. I found that if I just pour the mix in I get a "too lean" cel! I have to insert a tube and give it a synthetic enema. So to speak.
I dont have a opening yet for the 21st matter of fact I just found out today that I have to work anyway. Ill post on that thread.
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Old 12-26-2005, 05:56 PM
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21st?
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