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if i get a k20a motor (type r) in my 01 civic, do i need like 100 octane or can i use 91-92 ocatane
 

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He is probably referring to what quality of fuel he will need to avoid pinging... it's a legitimate questions and i'm curious myself.
 

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Virusx86 said:
He is probably referring to what quality of fuel he will need to avoid pinging... it's a legitimate questions and i'm curious myself.

The highest available. 92 octane
 

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seems like a pretty high compression for just 92 octane... they run like 100 or so in japan. Hrm but if people are getting away with it.
 

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Virusx86 said:
seems like a pretty high compression for just 92 octane... they run like 100 or so in japan. Hrm but if people are getting away with it.
Run 92 octane and maintain a heathly engine you wont run into detonation.
 

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The K20A has an 11.5:1 compression ratio. You can run 91 (92 depending on where you are from) octane all the way up to 11.5:1 compression without any problems. Once you go over that compression, don't even think of running 91 or 92 octane unless you want to here some knockin. But yeah, you can run 91 octane. It's a very legit question. Don't laugh at the guy for asking.
 

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non vtec said:
I run Av-gas in my car, it gained around 6whp on the dyno as we ran it through the system.. We had been running it on 98..
Since over here we get 91, 96, 98, Av-gas, C-16, methanol etc..
So theres your anwser.
 

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since you're in so cal (cali in general), we only have 91 octane here. In Japan and Europe, 98 octane is recommended, however their octane level system differs from the US. Their 98 octane = our 95 octane.

You -can- use 100 octane, since there is nothing higher than 91 around here ... if you want, I have a list of places where you can get 100 octane. Various dyno's show that using 91 octane will have the engine torque drop from 2000-3000 rpms (www.hondata.com ... check out the k20a reflash page... stock dynos). If you really want to, you can mix 100 octane with 91 octane to produce 95.5 octane gas... just to warn you, 100 octane costs around $4.80 per gallon
 

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here is a comprehensive list of places that carry 100 grade or higher octane gas in southern california:

COMPETITION 100 UNLEADED RACING GASOLINE

Legal in all 50 states
Compatible with catalytic converter and O2 sensor
Good for compression ratios up to 12:1 w/iron heads and 13:1 w/aluminum heads
Blends easily with pump gasoline

Available at these Southern California locations:
(be sure to call for availability & pricing, not all dealers carry all products)

Agoura 76 - at the Chesbouro off ramp of the 101 freeway in Agoura.
28203 Dorothy Dr.
Agoura Hills (818) 991-6241

Bellflower 76 Service
16719 Lakewood Blvd.
Bellflower (562) 633-9176

Downs Oil Co. *
1296 Magnolia
Corona (909) 737-3421

Fishback Motorsports *
El Cajon (619) 912-3876

Huntington Beach Car Wash
18971 Beach Blvd.
Huntington Bch. (714) 847-4924

J & R Shell
1808 White Ave.
La Verne (909) 593-7015

Brentwood 76 Service
12037 San Vicente Blvd.
Los Angeles (310) 476-4818

Graham 76 Service
2690 San Miguel Rd.
Newport Bch. (949) 644-7151

Norwalk 76 Service Center *
10951 W. Imperial Hwy.
Norwalk (562) 868-8659

Southern Counties Oil *
1825 W. Collins
Orange (714) 744-7140

Arroyo Parkway 76 *
155 E. Glenarm
Pasadena (626) 441-3392

Phillips Ranch 76
16 Village Loop Rd.
Pomona (909) 623-2429
Phillips Ranch in Pomona, CA. Take 60 fwy, exit phillips ranch road and go north, then turn right on village loop and it will be on left hand side (about 1/2 of fwy exit).
100 Octane unleaded

Osborn's 76 Service *
1870 S. Elena
Redondo Beach (310) 373-5043
www.osbornauto.com

Cosby Oil Co. *
6220 Fairmount Ave.
San Diego (619) 280-6884

Star Propane *
4426 W. First St.
Santa Ana (714) 839-7676

Cosby Oil Co. *
12902 E. Park St.
Santa Fe Springs (562) 946-4404
www.cosbyoil.com

Canyon Service & Detail - Uses unocal gas*
507 Entrada Dr
Santa Monica, CA 310-454-2619

* Sears Point, Unocal 76
100 Octane unleaded (blue)
114 Octane leaded (orange)
Sears Point Raceway in Sonoma, CA.

KRS Distributing *
8230 Pacific
Stanton (714) 816-8983

Downs Oil Co. *
42088 Rio Nedo, Suite 101
Temecula (909) 506-4545

Playa Vista 76 *
8300 Lincoln Blvd
Westchester (310) 649-4683

Kahn 76 Service
150 S. Citrus
West Covina (626) 339-8018

Woodland Hills, Texaco
101 Octane
Woodland Hills, CA. Northwest corner of DeSoto and Van Owen

Yorba Linda 76 Service
18351 Imperial Hwy.
Yorba Linda (714) 693-2546
 

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1llmatic said:
i'm using 94 octane with octane booster.

That's what I'll use. Sunoco Rules! :D
 

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100 octane in japan is different than in the us us gas uses a mixture of ratings so its usually lower than japanese gas rating plus in kentucky there is NO WAY to get anything over 91
 

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therobmancometh said:
100 octane in japan is different than in the us us gas uses a mixture of ratings so its usually lower than japanese gas rating plus in kentucky there is NO WAY to get anything over 91
NC has 93, i dont know about VA but I think they do too.
 
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