996 cup: strictly race fuel?
03-12-2011, 07:32 PM
#5
Pocket Sand
Rennlist Member
Rennlist Member
Join Date: Jul 2004
Location: Ask Rusty Shackleford.
Posts: 7,649
Likes: 0
Received 0 Likes
on
0 Posts
03-12-2011, 09:08 PM
#6
Rennlist Member
98 RON. this is from the 01 cup manual, I run 98 or 100 unleaded race fuel. I would not mess around with any octane boosters or additives, burning down a $25K motor to save a few bucks on gas doesn't equate...
03-12-2011, 10:56 PM
#7
Instructor
Join Date: Jul 2006
Location: Manchester, NH
Posts: 159
Likes: 0
Received 0 Likes
on
0 Posts
Yes as stated only run the 98 or 100 unleaded fuel. Running higher octane really does nothing for guys like us and the leaded fuels are not good for the motor. The leaded fuels cristalize in the motor on the piston domes and valve train when you shut it down. This leaded fuel is acidic and eventually will pit the domes and valves. When I raced bikes we would fog the motor after every weekend of racing to try and preserve the motor life.
Plus race fuel smells good, another reason not to run street gas in your motor with additive.
Plus race fuel smells good, another reason not to run street gas in your motor with additive.
Trending Topics
03-13-2011, 05:28 PM
#9
Rennlist Member
from my previous post:
98 octane.. but that's RON which is equal to 94 octane in the usa (PON). Half premium unleaded and half unleaded racing gas (100 Unleaded or more) should be well over the requirement. I ran that in my 04 cup a few times and it seemed fine. Have not tried it in my '08 but it would save a lot of money.
98 octane.. but that's RON which is equal to 94 octane in the usa (PON). Half premium unleaded and half unleaded racing gas (100 Unleaded or more) should be well over the requirement. I ran that in my 04 cup a few times and it seemed fine. Have not tried it in my '08 but it would save a lot of money.
03-13-2011, 08:09 PM
#10
I run 94 unleaded with Powermist octane booster with no problem. Dyno tested and no fuel related issues in the engine which we are refreshing during the off-season. Not all octane booster are the same quality so you should be careful. The goal was mostly to avoid the race fuel storage and transportation. $ savings is nice also...
