Gasoline Question
Keeper of the Truth
Lifetime Rennlist
Member
Lifetime Rennlist
Member
Joined: May 2001
Posts: 6,487
Likes: 8
From: So Cal
Originally posted by Greg Fishman:
<STRONG>What regulations? The racing body or some other entity?</STRONG>
<STRONG>What regulations? The racing body or some other entity?</STRONG>
Keeper of the Truth
Lifetime Rennlist
Member
Lifetime Rennlist
Member
Joined: May 2001
Posts: 6,487
Likes: 8
From: So Cal
Originally posted by Oleg Steciw:
<STRONG>Viken, I assume this is on the track, or are you actually finding 100 octane on the street?</STRONG>
<STRONG>Viken, I assume this is on the track, or are you actually finding 100 octane on the street?</STRONG>
Unocal 76 Go to 76 Racing Fuel and station locator
And, for those in southern California:
Scott Osborn's 76 Racing Gasoline
Keeper of the Truth
Lifetime Rennlist
Member
Lifetime Rennlist
Member
Joined: May 2001
Posts: 6,487
Likes: 8
From: So Cal
Originally posted by Timothy Stewart:
<STRONG>If you lived near an airport, could you use aviation fuel to mix with the auto fuel to increase the octane?</STRONG>
<STRONG>If you lived near an airport, could you use aviation fuel to mix with the auto fuel to increase the octane?</STRONG>
http://www.osbornauto.com/race2avgas.htm
Addict
Rennlist Member
Rennlist
Site Sponsor
Rennlist Member
Rennlist
Site Sponsor
Joined: Jun 2001
Posts: 732
Likes: 46
From: 155 Commerce Drive | Fort Washington, PA 19034
Jean Marc
congrats on the 993 Supercup 3.8L. The engine in the CUP 3.8L is very similar to any street based 1994/1995 993 engine. Changes 3.8L with real compression, no mufflers, bigger valves in heads, TPS no mass airsensor, slightly stronger mechanical cams. Everything else essentially the same. Gasoline is cheap especially in a racecar since you dont drive it very often......only at the track. I would run 100unleaded .....you dont know the history of the engine....maybe it has been modified by more compression, cam and whatever. Do a compression & leakdown and Gordon will compare it to what he has seen before and see if it within the norm. Keep it stock for PCA 993 CUP 3.8L have their own raceclass now...as GT3s have been separated from 993 CUPs finally.
congrats on the 993 Supercup 3.8L. The engine in the CUP 3.8L is very similar to any street based 1994/1995 993 engine. Changes 3.8L with real compression, no mufflers, bigger valves in heads, TPS no mass airsensor, slightly stronger mechanical cams. Everything else essentially the same. Gasoline is cheap especially in a racecar since you dont drive it very often......only at the track. I would run 100unleaded .....you dont know the history of the engine....maybe it has been modified by more compression, cam and whatever. Do a compression & leakdown and Gordon will compare it to what he has seen before and see if it within the norm. Keep it stock for PCA 993 CUP 3.8L have their own raceclass now...as GT3s have been separated from 993 CUPs finally.
__________________
Fabspeed Motorsport USA
155 Commerce Drive
Fort Washington, PA. 19034
www.Fabspeed.com
P: 215-646-4945
F: 215-646-9828
Exotic Car Performance Experts
Porsche, Ferrari, Lamborghini, McLaren, Maserati, Bentley, Aston Martin, BMW, Audi and Jaguar.
31 year PCA Club member supporter
14 year Ferrari Club member
1st ever financial supporter of Porsche Fans/ Rennlist
Fabspeed Motorsport USA
155 Commerce Drive
Fort Washington, PA. 19034
www.Fabspeed.com
P: 215-646-4945
F: 215-646-9828
Exotic Car Performance Experts
Porsche, Ferrari, Lamborghini, McLaren, Maserati, Bentley, Aston Martin, BMW, Audi and Jaguar.
31 year PCA Club member supporter
14 year Ferrari Club member
1st ever financial supporter of Porsche Fans/ Rennlist
Thread Starter
Racer
Joined: Jun 2001
Posts: 471
Likes: 0
From: Atlanta
I do know the history of the engine and it is still "leaded" (i.e. it has the Porsche motorsports official seal) by Sonauto the french dealership that does the work for Porsche motorsports in France and it is absolutely stock. I will run a mix of 100 (1/3) and 93 (2/3). 