running holley sniper without o2 sensor
02 sensors are very heat sensitive, and can detect an exhaust pulsation in a single Header tube, that's why we always wanted to position the sensor into at least 2 opposite firing tubes we running Headers. In the case of the car, you can generally get out and walk (run?) I've dunked mine lots of times. You will still get some water on the engine side of the snails, mainly at low Rs. I have tried several different settings to get it going, no luck. Who knows. Was in marine engineering for years. If you let it cool down again, does it start up fine? But you still risk a little water running back at low Rs. It will flood itself out and won't start back, just crank and crank. For the most part, the small harness is plug-and-play. Holley Sniper EFI Self-Tuning Kit - Black Ceramic Finish. 92 YJ 4.0, AX-15 5spd, np231, dana 30 front, dana 35 rear. a leading manufacturer of aftermarket Wideband O2 sensor kits, the following may damage or destroy oxygen sensors: . Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. JavaScript is disabled. One workaround was to leave it in gear and slow to a stop and push the clutch as RPMs drop . Below are the most common sensor usages in a Holley EFI system, however pressure transducers can be applied to any form of pressure in an automotive system, from oil pressure, to exhaust back pressure, and the data gathering usages in racing can get quite creative. I myself will convert my 2 302's (Volvo Penta 5.0 l AQ231A) from carbs to EFI; I must find out everything before I start work on the engines, then I am satisfied to start. If you have any exhaust leaks between the combustion chamber and 18-24" after the sensor you are going to have problems. I am happy with Holleys no hassle replacement of the parts. you don't want to read that loss. Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. So I bought the progressive linkage but you then have . Q1. Seems to LEARN much faster than the Fitech did. They are the only ones got me a holley usb to can cable fast. In order to do this, it heavily relies on proper O2 sensor placement. When either of these operating temperature ranges is exceeded, the sensor can no longer be . i thought about it, but after $3400 on an EFI alone and an entirely new rigged boat Im having a hard time forking out another 2000 for an exhaust when I may just do an open loop My buddy machined up a set of spacers I sketched out for him. Oxygen (O2) Sensor - Is an electronic device that measures the proportion of oxygen (O2) in the exhaust gas. Other than the constraints provided in the article above I see no reason why this wouldn't be a great upgrade. . I installed the adapter and elbow so it's at an angle above the entry point. I think installing a wide band O2 sensor in the manifold(s) is a great idea. Vega$69. I will get a new 02 sensor before I swap back to the orange box. See Details. George Place the Sniper EFI throttle body on top of the new flange gasket on the manifold. Anyone ever converted a 1987 3.7L 4cyl Mercruiser engine to EFI. Aftermarket headers are pretty much the only safe way to run an O2 sensor. Hopefully this one lasts longer than the original. The truck started fine after install, and ran down the road ok. After some time, the truck will not start after it comes to operating temperature. He also explains how to properly install them. Given the traditionally poor fuel economy of carbureted marine engines, we feel your pain. Holley Sniper EFI Oxygen Sensors 554-155 A replacement clamp on would be an easy change out. Replacement Sniper and Terminator X O2 Sensor, This part is legal for sale or use on Racing Use Only Vehicles. This requires removing the plug with a breaker bar, and using a 1/2 NPT to 3/8 NPT adapter to mount the Sniper sensor. I'm having new headers with an O2 sensor bung installed in my car ('79 Vette) soon, to prepare for a Holley Sniper EFI TBI install this winter. I did--- Save your money and piece a fuel it together. These often don't work with stock ECUs, so your best bet is to weld in a second bung for the wideband sensor. Note that this is a different sensor than Holley uses for their Dominator/HP/Terminator/Avenger series. But this also makes me wonder what you did for the O2 sensor. Here's the pic of the location with my header. I recognize that it would be an absolutely tremendous investment, but based on the overwhelming response we get to this post I am pretty confident that the market is there. To close this one out, below is a photo of where I installed the O2 bung. Taking a look at the holley manual I am thinking about drilling and tapping the front exhaust port on the log for the O2 sensor. . Holley EFI requires several pressure inputs in order to run an engine. Conditions when closed loop o2 should be turned off. Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. Customer Rating: 4.3 out of 5 stars: 4.5 out of 5 stars: Sniper EFI 2300 Marine. Initial Calibration in Basic Configuration. Most water jacketed header manufacturers (Lightning, CMI, etc) will install 02 bungs in their headers for extra money. Good luck to all. The Sniper EFI master kit contains the most complete EFI fuel system on the market. Part# 554-155. http://s621.photobucket.com/albums/tt291/Mark11530/?action=view¤t=MAH05771.mp4, http://www.holley.com/data/Products/Technical/199R10226.pdf. I was thinking aluminum heads would run it up closer to 5,000 rpm. It needs the tip pointed down at least 10 degrees from horizontal and at least 15 degrees from vertical I prefer about a 45 degree angle from horizontal. functioning controller during engine operation. With over the transoms you might get away with it if the water is introduced at the very very end, and the O2 is mounted right at the log. Add to Cart . Note, that is not a crack in the exhaust manifold, just a shadow from a casting flaw. The other thing I want to overcome is the fuel return line; my harbor master says that I can connect my fuel return line to my CAV (lucas) gasoline filter, it has 4 connection, now only 2 are used. I am considering the Daytona Sensors Ignition module. Has anyone run an O2 sensor in an EFI on a marine engine? I will keep the replacements as spares. Features: . I didn't read all this, but yes, the EFI system can be run without a WBO2 sensor. That sounds like one solution. If I am reading your post correctly you are using two separate o2 sensors when using headers ? https://www.efisystempro.com/efi-pro-hangout/sniper-installation-tips-holley-tom-kise, https://www.efisystempro.com/efi-prng-engine-startup-sniper-terminator-x-stealth. PRO's: Wideband O2 sensor harness is longer, allowing easier connection and routing. 1985 fj60 (sold back to Toyota), 1997 fzj80, 1971 fj40 with 75 2F. Much of the system is encased right inside the throttle bodyand that includes the ECU. I will change and be using an in-tank pump when I install the new 120 gallon tank this winter. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. The wiring was a bit of a mess. Could show a lean condition when in fact it really isn't. Do you also recognize that the O2 sensor that is required for closed-loop operation will not survive in the "wet" manifold used by most marine engines, and that to install a device to protect the O2 sensor from this moisture may require the removal, machining, and replacement of the exhaust manifold? so far so good love the smooth power and easy starts. Fuel prices at the marina are usually about a dollar a gallon more than at the local Racetrac/Wawa/wherever, and even more if you wisely opt for ethanol-free fuel. Greatest struggle is the shift interrupt. Holley part number 554-155. Description. While this is extremely unlikely if you are having immediate, back-to-back O2 sensor failures you should make the effort to rule this out. Everything is included to completely plumb your fuel system including; 20 feet of 3/8" EFI Hose, in-line fuel pump, post and pre fuel filters, return bulkhead, and all of the necessary fittings and hardware. 2 Reviews. However, overcoming that whole idle/off-idle transition (mentioned above) is going to be the challenge. Thanks for that, Danny. Note the temperature sensor mounted on the back of the driver side head in the above photo. Everyone raving about customer service is telling the truth! Homemade body parts replace the originals as they rot away but it's a 40 on the inside. If you're not running one (or if you are and the water has killed it) then it is not surprising that you are running rich. I've seen O2 sensors in water jacketed headers that have worked fine for years. Option 1 is to purchase and install one of the Holley EFI Dual-Sync Distributors on your engine. Q3. Hooker BlackHeart Oxygen Sensor O2 Bung 2.25" Clamp-On Style, Hooker BlackHeart Oxygen Sensor O2 Bung 2.5" Clamp-On Style, Hooker BlackHeart Oxygen Sensor O2 Bung 3.0" Clamp-On Style, Holley Oxygen Sensor O2 Bung Weld-In Style. I had the pink ecu signal wire connected to a bullet connector on the passenger side . 29. If the indicator reads "LOW Err" double check the connection to the CTS. Do you understand that no USCG-approved aftermarket EFI fuel system (including fuel pump, lines, filters, adapters, and hose ends) exists, that installing unapproved components on a boat will make the boat out-of-compliance with USCG regulation and could result in financial loss and legal liability (and that you release us from any liability by proceeding)? the engine not running. Holley Sniper Installation Supplement Please note, a Holley Sniper instruction manual, as well as some small parts that come with the . Holley's self learning system is a blessing and a curse. The Ford 2300 engine uses a Holley carburetor, but it is in fact a licensed copy of a 32/36 Weber. holley efi. Part # 554-155. Holley EFI Oxygen Sensor. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. I was mocking it up at the time. away. Waiting for spring to put back together. The boat underway acts very much like a water brake dyno I strongly believe that a well broken in engine in good condition can stand a much more critical tune w/o issues and deliver almost the same fuel economy as the proposed EFI conversion. Oxygen sensor: It's perfectly OK to share narrow band oxygen sensors with the stock ECU. B/c what it sometimes perceives as a lean spike is actually raw fuel with no oxygen. #1. Had to replace the oxygen sensor on my car for the terminator x after the original one failed and this fixed all my problems. No matter what I do, it will not start. Sort. AFR was 19 area. Welcome to ClassicBroncos! The ones in the Bosch box come without warranty. Ive got a set of bassett headers for a BBC, ill see if they can fit under the transom. Also the progressive link. Tips on how to measure the correct location and other considerations when welding in an O2 sensor bung. Other? I'm guessing by snail, that's another name for the riser? What is your fuel pressure at the carb during crank? Let him re-jet the carb (a wee bit on the fat side for safety) and reset the timing and try again. What Is Pinion Offset, And How Does That Affect You? Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues. Then they had it repaired and back to me in 5 business days. The wide band O2 sensor is required for initial running and calibration. The spark must be manually tuned. Bolt-on carburetor style EFI for your classic car or truck. My first install was on a stock manifold and I installed it in about the same spot Steamer (above) did, except 180 degrees the other way, facing towards the front of the vehicle. And it is timing that is equally critical to best performance and fuel economy. Since your existing low-pressure fuel system is not going to work with the Sniper EFI System this puts you in the unenviable position of choosing between USCG compliance or EFI. I had a blue wire coming out of the firewall that met this need, but it was already hooked-up to the + side of the coil and the Duraspark box. Are you running the latest software? They have been working out well for a few years now. I have not gone back in to try to fine tune them. My tune is coincidentally set at 11.5 desired afr, with the failed side as the leanest bank, but the ecu added 15% fuel anyways. An update from Al:After installing them I used the auto tune program on the Holly HP V4 software and they are working great. When I went to Holley HP, I found an adapter by Innovate that is designed to draw air out the exhaust stream and away to the O2 sensor. The new Exhaust manifolds will have wideband O2 bungs for tuning. I am a competent mechanic and I have checked all the usual suspect items. $132.95. Sniper throttle body linkage opens all four barrels evenly when you depress the throttle. Doesn't look like it will have an O2 sensor. I have also installed a sniper system on a 350 Mercruiser and was wondering if you have done any tuning on yours yet? Prime cannot be adjusted on this old unit. Holley Sniper O2 sensor replacement. Air-Fuel Ratio (AFR) - The most common reference term used for mixtures in internal combustion engines. #3. You should then have at least 18-24" of pipe after the sensor. 10 min read. I would back-burner the ignition control questions until you get the fuel injection working. Sniper EFI 4500 Marine. Mike. For now I have a genuine bosch O2 and Standard Automotive TPS installed. Got a picture? OT pipes may be out of the question, but with the water dumps put in at the transom, ala Gil or Rewarder OT pipes, you could get dry readings with bungs a little above where they bolt onto the logs, I would think. Free Shipping - Holley Sniper EFI Oxygen Sensors with qualifying orders of $99.
running holley sniper without o2 sensor