PRODUCT FAQ How do I know what model my jeep is? View the Jeep Application List Rich running Weber K551(K5534) carburetor . How do I lean the fuel mixture to remedy this problem? The manufacture states in the installation instructions that the fuel pressure at the carburetor inlet can not exceed (3.5 pounds). It is recommended that if youre fuel delivery system is producing pressures above this mount a fuel regulator should be installed before the inlet. Pressure should be set at or around (3pounds). It is also possible to swap out the main jet (size 65) with the secondary jet (size 47.5) to reduce the amount of fuel being delivered without affecting the overall performance of the carburetor. The carburetors are delivered from the manufacture preset to run rich. This is to reduce the likely hood of burning a piston due to a lean fuel mixture. My 2.5L plastic valve cover bolt holes do not line up with the cylinder head. What should I do? Do to the thermal dynamic nature of plastics the covers might have some natural deflection when they are released from the mold. When installing the 4cly valve cover you want to start the two front and two rear bolt holes first (finger start only. Do Not Tighten). This might require some force to be applied to help return the plastic to its original molded shape. After the front two and rear two bolts have been lined up and started the remainder bolt holes should align without any difficulty. Proceed with factory spec torque setting and pattern sequence. Please note that the OMIX cover is supplied with a rubberized formed gasket attached to the cover. No additional gasket material is required. The OMIX cover has been designed to work on two types of 2.5L heads that were supplied by Jeep. The covers bolt hole openings might be larger than your original do to this variation from Jeep. Does the Dana Spicer axles that are for ABS applications come with the toothed sensor ring installed? All Dana Spicer axles that are listed for use in ABS equipped Jeeps come with the toothed sensor rings already installed. They are part of the complete axle assemble when ordered using the correct OMIX part number. What is the correct torque setting for the aluminum valve cover? When installing the replacement aluminum valve covers for the 258 six cylinder and the AMC V8s you should follow the factory spec settings, and tighten in the correct sequence. It is important to note that the bolts should not be tightened past 55 INCH LBS. DO NOT TIGHTEN WITH A FOOT LBS TORQUE WRENCH as this will cause the aluminum covers to possible crack at the mounting holes. Resist the temptation to over tighten the gasket material. It can be squeezed out if too tight and allow for a possible leak. The original 6cly plastic valve cover calls for 28 in/lbs of torque to be applied but it will be OK to torque the new cover to 55 in/lbs. How do I attach the Jeep Nerf Bars to my vehicle? Position nerf bars to frame, front to back and parallel with the side and bottom of body. Mark holes with a center punch and drill (8 each side) 5/16 holes. Secure with self tapping bolts, supplied. It is advised to use two people when marking the positioning of the bars to frame for drilling. There are no rear holes in the frame of my jeep to mount the Universal Rear Tow Hooks. How do I mount them? The rear universal mounted Jeep tow hooks can be mounted on any flat surface of the frame on any vehicle using the supplied hardware. Once a location has been found, use the hooks as templates and drill two 1/2" holes in the frame (any existing holes in the frame can be used). Be sure to check for wires, fuel lines behind the frame before drilling. Torque supplied bolts to 65 ft/lbs. The rear 7 extended fender flares I purchased for my CJ/YJ (wrangler) do not match the existing mounting holes. Did I get the wrong kit? The CJs and YJ wrangler 7 fender flare kits both use the modern TJ rear flare. This rear extended flare allows for more room for taller and wider tires. A slight amount of trimming will be necessary to provide for a proper fit. A cardboard pattern, per the installation instructions, should be place on your Jeep to mark were you will need to cut. When positioned correctly only the rear half of the wheel opening will need to be enlarged. If instructions are not available please contact the retailer you purchased your kit for a new copy. I purchased a new spider gear set for my Dana 35 Trac-Lock, but the gears do not match my old set. Did I get the correct part? The Dana 35 side gears and spider gears for the Trac-Lock are no longer machine cut. The machine cut gears are discontinued and are no longer being sold. The new design incorporates cast gears with a different tooth count than the older machined parts. If you are replacing any of these gears a complete new set will need to be ordered as they do not interchange. What body parts from a CJ7 can I use as replacements for my CJ8? A large number of CJ7 body parts are interchangeable with the longer wheelbase CJ8. All body panels forward of the firewall are the same including the windshield frame, and dashboard plate. After the firewall the front floor panel is also the same for both Jeeps, but this is were the similarities end. From the rear step-up back the bed of the CJ8 is 10 longer overall and has its own vehicle specific body panels. Please contact your retailer of choice for required OMIX-ADA part numbers. How do I know if I have an L flat head engine 4cly or the later F head over head valve 4cly engine in my vintage jeep? The quickest way to determine what engine you have will be to look at the following items. L flat head engine will have the plugs and plug wires pointing straight up on top of the head. F head over head valve engine will have a metal valve cover and the plugs and wires will be pointing out at an angle on the drivers side of the head. It is very important to know what engine you have before placing an order for parts. Your jeep might have had an engine replaced over the years that might not match your years specifications. Im having trouble getting my Solex downdraught carburetor for my vintage 134 4cly engine to run correctly. What adjustments should I make? The Type M.32 PBIC carburetor is a bolt on replacement for the original Carter Carburetor and has some differences. It is very important to note that the Solex M.32 will need only 1-1/3 to 2 pounds of fuel pressure at the inlet fuel line. Any thing higher will cause the carburetor to run very rich and produce drivability problems especially in high altitude regions. If the fuel pressure is found to be to high an inline regulator will be needed. Another area to pay special attention to when installing the new carburetor is to the rubber fuel lines. If possible these lines leading to the carburetor should be replaced with new lines and installed very carefully to avoid producing trash or small rubber shavings after the fuel filter. If a small particle makes its way into the carburetor it is possible for the trash to clog the needle valve and cause a run rich condition Im installing the slip yoke eliminator kit onto my 231 transfer case and have found that the replacement main shaft is larger than my old unit. I can not reinstall the roller bearing back onto the shaft; did I get the wrong kit? The slip yoke eliminator kit you have purchased has several improvements made to the unit including the main shaft that make it stronger than the parts you are replacing. The kit comes with the thicker main shaft that does away with the roller needle bearings all together. These parts will not be needed as stated in the installation instructions. The replacement speedometer I purchased is not working correctly, why? It is recommended that you purchase a new speedometer cable when you purchase a new speedometer. This item is often overlooked and what is thought to be an issue with the replacement speedometer may in fact be related to the cable. After installing the new speedometer double check all connections to the rear of the gauge and the cables attachment point at the transfer case. A bad cable will often produce a jumping effect or even a no read situation. My new temp and or fuel gauge is not working correctly, why? It is very important to install these items carefully and take the time needed to make sure that the wiring has been done correctly. If, after reading and connecting the gauges correctly per the installation instructions, you are still having problems than you might want to look at the following possibilities. If the gauge does not register than inspect the ground at the tank or the engine grounding strap (repair if needed). If the gauges work than repair or replace these grounding wires. If you are getting either a full or hot reading all the time than disconnect the sending unit wire at the tank or engine. If the gauge wire drops to empty or cold than replace the sending unit. If the gauge needles remain at full or hot than the gauge or sending wire has shorted. Check sending wire first for continuity issues. Due to the nature of this problem and the many different causes that might give faulty readings it is the installers responsibility to check all possible reasons before assuming a bad gauge is at fault. If you are still unable to correct your problem please contact the retailer you purchased the product from for further assistance. Here are the temerature gauge and fuel gauge calibration information for later CJ models with gauges inside of speedometer. TEMP = Cold (130-73 ohms) Begining of band (171-36 ohms) Top of band (242-13 ohms) HOT (270-9 ohms) FUEL = Empty (73 ohms) 1/2 full (23 ohms) Full (10 ohms) Why will the replacement Solex carburetor I purchased for my vintage CJ not fit the intake mounting studs? The same bolt pattern was used on all early model CJ carburetors and should fit with out trouble. The bolts will run front to back on the intake. There is the possibility that your jeep has had the motor, or intake replaced with one from an early 2WD Wagon or Jeepster that used a slightly larger carburetor and had the mounting bolts running side to side. What is the load rating for your D-ring shackles MS-2538 and your D-ring receiver hitch MS-2546? The load rating for both the D-ring set (MS-2538) and the 2 receiver D-ring (MS-2546) are an industry standard of 10,000 LBS. Both items have the ¾ size D-rings. What is the ring tooth count for the GM 350 conversion flywheel (manual) that Omix sells (part number 16912.10)? The flywheel we sell for the GM 350 conversion has a ring gear tooth count of 168. The flywheel is applicable for years 72-86. We do not stock a flywheel with a tooth count of 153. I purchased a piston ring kit for my vintage (F-head, L-head) CJ 134 motor, but only received a total of 12 rings. There are 4 groves in each piston so should I have received a total of 16 piston rings? The pistons for the 134 4cly are fitted with two compression rings and one oil control ring. The pistons do have an extra groove above the top ring which acts as a heat dam or insulating groove to protect against sealing of the top ring in the groove with hard carbon. When you install the rings do not use the top most grove. What rear axle assembly do I have in my Jeep? Due to the length of production of the Jeep, and the number of modifications that might have been made to any Jeep over the years this question is a little harder to answer than most. The Dana-27 axle was used from 1941-1947 MBs and early CJ-2As. The Dana-44 (tapered axle) was used from 1948-1969 CJs. The Dana-44 (flanged axle) was used from 1970-1975 in CJ-5s, some 1986 CJ-7s, and recently in some 1997-present TJ Wranglers. The AMC-20 (tapered axle) was used from 1976-1986 in CJ-5s, and CJ-7s. The Dana-35 (flanged axle) was used from 1987 to present in both Jeep Wrangler models. Can I use the T150 bell housing that Omix sales with a T18 transmission? Can I just drill and tap new holes? The swap is possible but not without some modification work. The T150 bell housing can be used with some alteration if used with a Jeep sourced T18 transmission. Alterations will include but not limited to drilling and tapping new lower mounting bolt holes for everything to line up correctly. It is important to note that further modifications will be needed if a Ford T18 is used, and it is quite possible that major reworking of the bell housing would be needed. Another problem to solve would be the need for a low profile bolt located just behind the clutch fork. If this bolt is not the correct size major problems with the fork not seating correctly on the pivot ball can accrue. As you can see there are a lot of variables involved with this type of switch and therefore OMIX does not note or promote the cross use of this bell housing for a T18 application. We will only be able support and warranty the part for its original application and use. What material are your fender flares made of, and do they have UV protection? All of our fender flares are made of a plactic material called TPR(Thermoplastic rubber) and are UV protected. This is the same material that most front platic bumbers are made of for good impact resistance. What material are your plastic armor panels for the TJ made of, and do they have UV protection? All armor panels are thermoformed with ABS plastic sheets. They all have been manufactured with UV protection. We have had the panels subjected to UV ray exposure test without any fading or cracking. I have an M38 with a 24V electrical system. I want to add the universal 24V wiper system to my jeep but I'm not sure on how to wire it. Is there anything special I need to do? You can wire the 24V wiper system the same way you would the 12V system. Just make sure you use a quality switch for both systems. See our installation instructions for more information. Why will OMIX part number 11142.02 or 11231.01 4pc lamp guard kit not work with my Sahara model? What makes the Sahara different? The Jeep Sahara models come from the factory with a slightly different fender flare design than the standard model TJ's. The outer lip is slightly larger and will cause the side maker guards to have a 1/4" gap between the flare and the guard when installed. What makes my Sahara different from other Jeep models when installing fender flares? The up-scale Sahara model Jeeps come from the factory with additional body molding along the side of the Jeep between the front and rear flares. Extra mounting holes were drilled at the factory for the mounting of this molding. If removed these holes will be exposed. For this reason our replacement flares and our 7" extended flares are not a OE replacement. You can still use these products for your Sahara, but additional work will be required. Will the OMIX body armor kit (11650.50)fit my Rubicon or Unlimited TJ? There are some features to the Wrangler Rubicon that will not allow the kit to fit correctly in some areas. The front flares are designed to meet flush with the front fender and will cause the front fender armor to not fit correctly (will not mount flush to fender). The Rubicon also comes from the factory with pre-intsalled H/D side rocker guards so these items would not be needed. The items that would fit with out any problems are the hood armor, the front frame cover, and the real seal cover. The Wrangler unlimited can use only the front fender armor (unless it's a Rubicon), the front frame cover, the hood armor, and the rear seal cover only. It is important to note that the side rocker armor, nor the rear corner gaurds will fit the Unlimited due to it's longer wheel base. Can I use any AMC V8 flywheel on any AMC V8 motor, and for any year? The AMC V8's share a great number of parts between the different models (290,304,343,360,390, and 401's)but some items are motor specific. The flywheels are externally balanced for each motor and should not be swapped between motor sizes. OMIX sells the flywheels for the 1971 and up AMC 360 V8 (16912.08) and the 1971 and up 401 V8 (16912.09) These flywheels will not fit any motors produced before 1971 (different crank flange design) and should not be used on the smaller 304 V8. My new OMIX Jeep seats will not bolt to my stock CJ seat riser. Why? The replacement OMIX Jeep seats have been designed to work with a number of Jeep mounting applications, but some additional hardware may be needed. If your OE CJ seat risers did not come with factory installed seat sliders these seats will not bolt directly to your frames. For proper fitment additional seat risers will need to be purchased and installed. What gauge steel is used in the construction of your Jeep® body tubes? Two gauges of steel are used in the construction of the reproduction body tubes. (18) Gauge steel is used in the front and rear flooring, all mounting brackets, top cowl assemble, and wheel housings. (16) Gauge steel is used for all side body panels and rear tail panels.