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930s rule the wasteland
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my fuel lid says 98 octane ,is 93 ok ?
The car runs fine im just wondering if i should raise the octane? Pete
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1980 930 Turbo 1993 Corrado 1983 944 1984 944 2001 VW golf TDI |
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Registered
Join Date: May 2005
Location: Loxahatchee, florida
Posts: 2,748
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it is 98 ron which is different from the american r+m/2 method. I have a neighbor who is a fuel buyer for the military. he informed me that 98 ron is about the same as 91 octane. I had the same question when I bought my carrera the sticker in it says the same thing. one other thing about octane boosters, if the bottle says it will raise the octane 3 points that means it takes it from 91 to 91.3 not 94 so it ends up being pretty useless. I think Steve Wong posted a thread on this a while back.
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88 turbo Guards red Targa slant nose, and yes I am a horsepower junkie, 3.4liter,7.5 to 1 JE pistons, Adjustable WUR, Imagine fuel head, 1 bar waste gate headers,allthe cis toys. Now apart to become the next EFI monster. fabbing my own intake, headers Individual throttle bodies, MS-3, pauter rods, Xtreme twin plugged heads, gt-2 evo cams cop's. 2019 Silverado 6.2L |
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Registered User
Join Date: Mar 2002
Posts: 3,563
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Incorrect. The European ~98 RON rating is the equivalent to the USA ~94 PON (Pump Octane Rating = the average of the RON & MON rating).
Keep an eye on your A/F's under heavy load to verify your fuel is OK.
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Merv '89 911 Turbo Cab Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition ![]() |
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Lurkasaurus
Join Date: Apr 2004
Location: SK, Canada
Posts: 930
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I can only get 93 up here so I fattend my mix to 4% CO and I keep my timing back one degree.. 'course I have no intercooler and I'm a chick*****... I'm guessing your OK but get your A/F checked on a dyno for piece of mind.
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Tony '77 930 "Objects in mirror are losing" "Oh cock..." - James May |
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930s rule the wasteland
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we dont have 94 in our area ,can i get away with 3 bottles of octane booster on a full tank?
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1980 930 Turbo 1993 Corrado 1983 944 1984 944 2001 VW golf TDI |
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Join Date: Mar 2002
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Octane boosters are ***** - put it this way, you can't polish a turd
![]() Either use better fuel, or lower your boost. If your fuel lid says 98 octane and your car is a genuine US car, then that's strange. I'd say your car is a gray market import, from Europe or something? If so, 93 octane would be fine. It's close enough to the 98 RON rating. But as we said earlier, just get your car on a dyno to verify your A/F's across various rpm/load points to make sure you're in the clear with your 93 Octane fuel. If you can't hear it pinging on hard accleleration, then you're OK, but then again, sometimes pinging is inaudible, so the best precaution to take is get that car strapped to a dyno my friend ![]() EDIT: OR invest in a good & accurate Wideband O2 Controller & Gauge ![]()
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Merv '89 911 Turbo Cab Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition ![]() |
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930s rule the wasteland
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yes it is a euro car , no the car runs unreal .I just dont want to the hurt the car with the wrong fuel.
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1980 930 Turbo 1993 Corrado 1983 944 1984 944 2001 VW golf TDI |
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Join Date: Mar 2002
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As I said, strap an A/F wideband gauge to it to verify you're in the clear... I'd say you are
![]() I've run up to 1.3bar on 98RON / 94 PON, and I've been fine ![]()
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Merv '89 911 Turbo Cab Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition ![]() |
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Registered
Join Date: Apr 2005
Location: In the wind...
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Most people equate 98 RON with 93 to 94 R+M/2. This isn't necessarily correct for all fuels, but it's probably close.
I used to run 93 in my stock '80 turbo, with no problems. Now, all I can get in this area is 91. I had the timing backed off about 4 degrees and all is well again. If you can get 93 from a reputable source, you're probably fine. If you buy your gas at whatever station is cheapest at the time, I'd suggest backing the timing off a little, as I've seen lower octane gas sold from the higher octane pumps, once or twice. Yes, it's against the law but there are a few dirtbags out there. If you are stuck with alcohol in your gas, or the other (reformulated) crap, I'd also adjust the timing. You won't notice a big drop in performance. As others have said, a can or two of octane booster will do nothing useful for you. JR |
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930s rule the wasteland
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thanks for all the info,helpfull and greatly appriciated
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1980 930 Turbo 1993 Corrado 1983 944 1984 944 2001 VW golf TDI |
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Registered User
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You can always buy a 55 gallon drum of race fuel... 104 octane and blend it.. I have a Sunoco dealer that will ship the stuff.. it isnt cheap... But it does give the car a very nice boost.
Loch Raven Sunoco 8000 Loch Raven Blvd Baltimore, MD 21286 (410) 337-3851
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Join Date: Mar 2002
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Quote:
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Merv '89 911 Turbo Cab Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition ![]() |
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930s rule the wasteland
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soooooo whats not cheap? how much with shipping
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1980 930 Turbo 1993 Corrado 1983 944 1984 944 2001 VW golf TDI |
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Registered
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Last time I looked 104 race gas was about 6 bucks a gallon if you buy it at the race track. I imagine that if you have a 55 gallon drum delivered it would add at least 20 or 30 dollars for delivery to the 55 gallons so an additional ~50 cents a gallon. I think it would take some of the fun out of driving if you had to pay 6.50 a gallon ...
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resident samsquamch
Join Date: Oct 2005
Location: Cooterville, Cackalacky
Posts: 6,815
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Not to mention that I don't think I'd feel very safe having *that* much fuel being stored at the house.
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-jeff back in the saddle: '95 993 - just another black C2 *SOLD*: '87 930 GP White - heroin would have been a cheaper addiction... "Ladies and Gentlemen, from Boston Massachusetts, we are Morphine, at your service..." - Mark Sandman (RIP ![]() |
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Automotive Monomaniac
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Quote:
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2012 - Porsche Boxster Spyder 6MT / 2018 - Porsche 911 Carrera 7MT / 2018 - Porsche Macan 7DCT / 2018 - Volkswagen GTI 6MT |
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A fellow Pelacanite
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In the UK we would have to have a licence to store that.
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1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG. Fitting - New service kit. Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head. 1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods. Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit. http://www.danasoft.com/sig/Iamnotanumber.jpg |
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930s rule the wasteland
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well i only do light welding in the garage
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1980 930 Turbo 1993 Corrado 1983 944 1984 944 2001 VW golf TDI |
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resident samsquamch
Join Date: Oct 2005
Location: Cooterville, Cackalacky
Posts: 6,815
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Quote:
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-jeff back in the saddle: '95 993 - just another black C2 *SOLD*: '87 930 GP White - heroin would have been a cheaper addiction... "Ladies and Gentlemen, from Boston Massachusetts, we are Morphine, at your service..." - Mark Sandman (RIP ![]() |
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930s rule the wasteland
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jokes
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1980 930 Turbo 1993 Corrado 1983 944 1984 944 2001 VW golf TDI |
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