Race Gas

[Tick]

Can I get away with running 110 leaded for a single track day? I have ten gallons, was unable to find unleaded local as of yet. I was thinking about using it as an additive. I know the risk is to the cat and the o2 sensor, neither of which I am attached to. Would prefer to run open dp but Sears point rules are that you have to have a full exhaust..

We're headed out at 10.. Any advice?

[benflynn]

pull the o2 and roll out

[Tick]

Just get a plug? Know what the thread is?

[740Weapon]

Originally Posted by Tick

Just get a plug? Know what the thread is?

3/8 or 1/2" NPT works but isnt the official thread size. i forget which one it is(n't). buy one of each. its cheaper than a new O2 sensor

also, e-bay sells test pipes for like $30 if you want to save the cat. wont help tonite... but in the future.

[Mueller]

Originally Posted by Tick

Just get a plug? Know what the thread is?

old spark plug??

that what I intalled in mine to protect the threads while welding the bung on...

[benflynn]

i used a npt fitting from home depot before

[linuxman51]

haven't had a problem with leaded gas and sensors. might shorten the life span but its unlikely that a single hit will wipe it out.

[Booster]

Originally Posted by linuxman51

haven't had a problem with leaded gas and sensors. might shorten the life span but its unlikely that a single hit will wipe it out.

+1

if the sensors are relatively new (which they should be due to a stage zero) then everything "should" be fine.

if you have the 10 yr old cat, it might sufer a little bit but who cares your gonna replace that anywya.

[Tick]

Thanks for the input, I picked up the plugs. Once the car cools down a little bit I'll make sure the o2's broken free. Should I just roll up with an empty tank and go full race gas or mix it?

[Tick]

Gone in 13. I'm hoping for a low fifteen if I can get any kind of hook at all, I think I've gotten slower with the stick and bigger wheels but oh well.. Nice cold day. Wish me luck, I'll report back late tonight or tomorrow.

[Booster]

Originally Posted by Tick

Gone in 13. I'm hoping for a low fifteen if I can get any kind of hook at all, I think I've gotten slower with the stick and bigger wheels but oh well.. Nice cold day. Wish me luck, I'll report back late tonight or tomorrow.

what are your mods? & what car?


as far as the race gas, i would roll up on an empty tank. might as well get the best use out of the rg while you have it.

[Tick]

86' 745. Mod list is short, 97' b230ft bored .60 over, milled thirty thou, 37# injectors, home made cai. Basically this is a baseline run.

*edit, m47 w/3.93

[Mueller]

1/4 mile?? :(

I was thinking "track" as in turns and braking late and all that fun stuff !!!!

[towerymt]

Originally Posted by Mueller

1/4 mile?? :(

I was thinking "track" as in turns and braking late and all that fun stuff !!!!

yeah, me too. definitely don't worry about the O2 and cat then. A full day at a road course (the real "Sears Point") would still be OK.

[Booster]

should be good for a baseline. how much boost you making? 10 psi? stock?

[thelostartof]

Originally Posted by benflynn

pull the o2 and roll out

leave the 02 in

I ran over 100+ gal of 110 leaded through my 02 and 50k later that 02 still passes smog just fine and returns 21+mpg

[miguels244]

I didn't know you could still get leaded fuel
guess so...but not for long

http://en.wikipedia.org/wiki/Gasoline
...fuel containing lead may continue to be sold for off-road uses,
including aircraft, racing cars, farm equipment, and marine engines until 2008

http://www.epa.gov/history/topics/lead/02.htm

good riddance

[gsellstr]

Too late for now, but the thread is 18x1.5 IIRC. Plugs can be had easily enough at the local autozone/kragen/whatever chain store in the 'Help' isle.

For drag's I wouldn't worry about the cat or O2. Yeah, it'll shorten the life a little on each, but not enough to worry about.

Good luck!! Go break something!