hello

[M.D. Holloway]

hootch in the tank will not harm anything but you will have to bring the go pedal a bit closer to the floor board to get where you want to go when you want to be there - which will also provide more exhaust and make you burn more juice. So I guess the only ones who benefit from the hootch in the tank would be the guys that grow the grain and make the mash.

What a racket...

[rgrimm]

I'd recommend non-ethanol, if you can get it. I run E-10 in cars I've had since new, but I'd be hesitant in an older car for the reasons mentioned (never designed with ethanol in mind, can clean out a lot of gunk). If you do decide to use it, be sure you change the fuel filters frequently...at least for a while.

And while a lower-octane might be sufficient for highway cruising, you never know when you're going to put your foot into it. So I'd err on the side of higher-octane or boosters.

The other thing to remember is that you will bet lower mileage on any ethanol blend...just not as much energy as "pure" gas.

[Milo2361]

Got another question - - was wondering if a Cat bypass would be a good idea for some cheap ponies? i don't really feel like shelling out thousands for a quality exhaust..... if its a good idea which pipe should i get? or should i just straight pipe it? i don't want it sounding obnoxious though....

[efhughes3]

Most have enjoyed the cat bypass....I did before going to headers. The Fabspeed is probably the nicest, that's the one I had. There some school of thought that a straight pipe isn't quite the same. Won't be obnoxious, a little throatier.

[jasonlee]

I run a cat bypass. Nothing noticeable in hp gains, but it sounds better. Anytime you free up the exhaust flow its a good thing. BTW I use a Bursch with o2 bung, which gets plugged in for smog testing only.

[Paulporsche]

Milo,

Be careful of that. Octane booster won't raise your octane level that much. Apparently the point they refer to on the bottles is acually .1 point. If you search this, there is a lot of available info.

Your car looks nice. Maybe you can buff out that quarter sized paint repair.

Also, although your car required only 87 when new, it's possible, maybe even probable, that as it ages, the engine requires slightly higher.

[petrolblue83911]

second on no octane booster. I run 87 or 89 on my sc, no issues, but I would not run 85-ever. Also, as stated, the octane boosters are not generally effective. Given your choices, I would run 91 to avoid the e-10. Alot of our gas out east also has either e5 or e10, I have not found any problems with my two 911 sc's during the last 5 yrs, and maybe 25k miles.
Nice car! and good luck

-Adam

[defcon65]

Is that color 'Ticket Me Red'?
Nice car, enjoy it on those deserted Nebraska roads. Just look out for the tractors, harvesters and 75 million head of cattle.
You can use whatever octane the manual specifies; assuming it's not a high-compression engine, 87 octane should be just fine.
Some say ethanol is OK, others say it is no good - you will get better mileage with straight gas, however. If you can find a Chevron station, you get the Techron for free. They are scarce here in Eastern Iowa.
Have fun and remember:
-Brake in a straight line
-Don't lift off the throttle in a turn
-Please DO wind it up to 5k in 2nd though 4th gears
-You're not going to get that silly grin off your face for a long time.

Cheers,

[snbush67]

Ive seen close to 15 MPG, 23 downhill with a tailwind, maybe, please send me your gas saver tips. Then again my car is a two speed....

[SCWDP911]

Originally Posted by Gordo2

Congratulations, looks like a great car.

Not to start a sideline discussion on your thread, but I run 87 octane in my '83 SC without any signs of detonation. The stock compression (9.3:1) ratio for these engines allows you to run regular fuel - that's why your manual recommends regular BTW.

It won't hurt to run higher octane (other than in the wallet), but I don't think it is necessary or beneficial in any way other than providing peace of mind.


Good luck, Gordo

+1.

Also, welcome. The World Domination Plot is ever widening and expanding.

Are you in Nebraska?

BTW, mine has not leaked yet either. I have owned it for a little over a year now. I was a little surpised to hear you have gone 2000 miles without a change in oil level. Liek someone else mentioned, make sure you are checking it after it is warmed up, running and on a level surface...

My mileage has been less than I was expecting as well. I typically average 22-25 on mostly highway driving. I went back and forth between 87 adn 93 octane gas and found I had no running issues either way, and that it ended up being a wash overall when I calculated it out for mileage and cost of gas - I get 2-3mpg better typically on the 93, which honestly was a bit of a surprise to get that much increase. I have a friend an hour away in Memphis (JFreels on the board here) that I think gets closer to 27 typically. He has an SC as well. I think my car is running rich and I have all the equipment to adjust it properly now, but have not getten around to it yet. You may want to take it in somewhere (or find someone who can help you) and make sure your mixture is set right... Of course, being that the car is new to you, if you do not know for fact the last time it had general maintenance, you should probably do what most here call a baseline and change all fluids, filters, plugs, cap, rotor, possibly wires, etc...

Looks like a nice car. Welcome and enjoy...

[SCWDP911]

Oops. OK< I see you are in Nebraska now... western part I assume since you referenced Wymoing. My dad's family settled the central and and east central parts of NE in the early 1800's (Seward, Grand Island areas)...

[Milo2361]

Im thinking i will go with the Bursche cat bypass pipe w/ the O2 sensor($165), much cheaper than the fabspeed($275)... anyone have a sound clip of a stock muffler w/ the cat bypass on an SC? all the vids on youtube i've found also have an updated muffler....

[efhughes3]

Originally Posted by Milo2361

Im thinking i will go with the Bursche cat bypass pipe w/ the O2 sensor($165), much cheaper than the fabspeed($275)... anyone have a sound clip of a stock muffler w/ the cat bypass on an SC? all the vids on youtube i've found also have an updated muffler....

I think the extra $125 for polished S/S and a bit of aesthetics is well worth it. The Bursch looks like a piece of pipe, their paint is usually less than perfect, and will flake or burn off pretty quickly leaving you with a rust magnet. So, if you want to spend a couple of hours stripping and repainting, or taking it out for coating, you'll have the same in time/money invested in the long run. I've got no connection with FS, BTW.