Premix for auto x??
#1
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I own a 2004 GT 6spd. This will be my first auto-x season with the car. Its all stock. There are 52 pages of should I or shouldn't I premix. I'm not looking for an opinion, I'm just wondering if you guys do or don't. The car is only going to be used for auto-x, not a daily driver.
#3
I'm not sure if premix is legal for stock class (?)
Anyhow, I never premixed and don't know of any National level car/driver that has, either. Seems like an uneeded expense and inconvenience for autocross.
Anyhow, I never premixed and don't know of any National level car/driver that has, either. Seems like an uneeded expense and inconvenience for autocross.
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Thanks for all your help. I'm not looking for more power or an edge, just want to protect my engine. I am a 1st time rotary owner and i want it to last. BTW it's 15 degrees here in Rochester so i wont be auto-xin until April, So keep posting auto-x pics to give me hope.
#8
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I have noticed my '05 using way more oil on autocross weekends. I totally believe you that the car doesn't use a lot toodling around town at 3k. Does it use enough? How the hell should I know.
I'm with Chike - I haven't used premix in my car at all.
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With the whole premix debate, I looked in my owners manual and it says to run premium gas only in the car. It mentions no 'premix'. If my engine ever goes bad, I can say that I followed the owner's manual to the letter.
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#10
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My car also uses a bunch of oil when autocrossing which is a good thing.
With the whole premix debate, I looked in my owners manual and it says to run premium gas only in the car. It mentions no 'premix'. If my engine ever goes bad, I can say that I followed the owner's manual to the letter.![Smilie](https://www.rx8club.com/images/smilies/smile.gif)
With the whole premix debate, I looked in my owners manual and it says to run premium gas only in the car. It mentions no 'premix'. If my engine ever goes bad, I can say that I followed the owner's manual to the letter.
![Smilie](https://www.rx8club.com/images/smilies/smile.gif)
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#11
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just recently pulled my engine apart - for a failure not related to lubrication .
I regularly beat up on the car at the track.
I have premixed for the last 50,000 kms and the engine has done 105000 kms .
The inside of the housings were in excellent condition and there was very little buildup of carbon anywhere . Apex seals showed no sign of wear.
I will carry on premixing .....
I regularly beat up on the car at the track.
I have premixed for the last 50,000 kms and the engine has done 105000 kms .
The inside of the housings were in excellent condition and there was very little buildup of carbon anywhere . Apex seals showed no sign of wear.
I will carry on premixing .....
#12
05-08 SCCA BS Natl Champ
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I own a 2004 GT 6spd. This will be my first auto-x season with the car. Its all stock. There are 52 pages of should I or shouldn't I premix. I'm not looking for an opinion, I'm just wondering if you guys do or don't. The car is only going to be used for auto-x, not a daily driver.
#15
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RX-8 - Race Tips from Racing Beat
While undertaking development work on the RX-8 Renesis engine for SCCA T2/T3 use, we decided to introduce extra oil into the fuel to monitor the effect. To our surprise, this additional oil increased power! Further dyno testing found that by adding 10 oz. of Royal Purple 2-Stroke Oil to 6 gallons of fuel, we gained an average of 1.7 HP from 2000-9000 RPM, along with an increase in peak power of 4 HP. We validated this increase by changing back to a “non-oiled” fuel - and the power returned to the previous level. Later, we tried the same test with another brand of synthetic oil with nearly the same results.
For racing applications, the addition of a high quality synthetic oil increases power and most certainly decreases wear. The only negatives are the cost of the oil and an increase in the tendency to foul the spark plugs. (Note: We have not performed these tests on non-RX-8 engines yet, these results are unknown.)
While undertaking development work on the RX-8 Renesis engine for SCCA T2/T3 use, we decided to introduce extra oil into the fuel to monitor the effect. To our surprise, this additional oil increased power! Further dyno testing found that by adding 10 oz. of Royal Purple 2-Stroke Oil to 6 gallons of fuel, we gained an average of 1.7 HP from 2000-9000 RPM, along with an increase in peak power of 4 HP. We validated this increase by changing back to a “non-oiled” fuel - and the power returned to the previous level. Later, we tried the same test with another brand of synthetic oil with nearly the same results.
For racing applications, the addition of a high quality synthetic oil increases power and most certainly decreases wear. The only negatives are the cost of the oil and an increase in the tendency to foul the spark plugs. (Note: We have not performed these tests on non-RX-8 engines yet, these results are unknown.)
#16
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just recently pulled my engine apart - for a failure not related to lubrication .
I regularly beat up on the car at the track.
I have premixed for the last 50,000 kms and the engine has done 105000 kms .
The inside of the housings were in excellent condition and there was very little buildup of carbon anywhere . Apex seals showed no sign of wear.
I will carry on premixing .....
I regularly beat up on the car at the track.
I have premixed for the last 50,000 kms and the engine has done 105000 kms .
The inside of the housings were in excellent condition and there was very little buildup of carbon anywhere . Apex seals showed no sign of wear.
I will carry on premixing .....
#18
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i got a case of pettit's protek R premix last year and felt or saw no difference. upon inspection of their claims, it wasnt enough for me to buy more. Im an engineer so im used to needing to back up any claims i make. they just say... look we took apart a 100,000 mile engine and it was less worn. there are too many factors for that to positively prove it to me.
#19
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use some upper cylinder lube, its cheap and it works for a little protection
IMO having a more than normal amount of premix in the tank is assuring when im autoxing. the engine takes alot of abuse so anything i can do to help protect it. the extra oil will undoubtably protect against wear in this high stress driving, hands down
however, if your gonna run SCCA its not legal for stock class, just something to keep in mind
IMO having a more than normal amount of premix in the tank is assuring when im autoxing. the engine takes alot of abuse so anything i can do to help protect it. the extra oil will undoubtably protect against wear in this high stress driving, hands down
however, if your gonna run SCCA its not legal for stock class, just something to keep in mind
#22
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no **** huh? guess i didnt read enough of the premix thread, cause what i read had ppl using it alot. i suppose that could make sense now that i think about it based on the product. good thing i mix lightly
whats your recommendation?
whats your recommendation?
#24
05-08 SCCA BS Natl Champ
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3.6 FUEL
A. Stock and Street Touring Class vehicles will use service station
pump fuel only. Pump fuel is defined as that which is “Federally
approved for use on public highways.” This includes the pump
fuel known as “E85, but does not allow racing-type fuels which
are available at service station pumps.
As for part two of your question (notice no allowance for pre-mix here either):
13.10 Engine
M. Any oil or grease, including synthetic, is permitted.
So were you serious, or just another clown that wants to put his two cents in without reading the rules?
Even in SP, where you can have some fuel additives, you would still need to the maintain the stock oil-injection:
Appendix F:
ROTARY ENGINE LUBRICATION SYSTEM
Any rotary engine model vehicle that has a lubrication system that
incorporates an oil line injecting oil into the fuel system in the stock
configuration must maintain that arrangement in Street Prepared,
even if an alternate carburetor is used.
Last edited by ULLLOSE; 12-15-2008 at 10:58 AM.