Sportster timing advance

The ignition module timing advance needs to be turned off to properly set the timing, that is what the shunt does 95 Sportster Timing marks. What you need to determine is that the timing advances even further as RPM increases to 3000 RPM. Check for recommended settings on the ignition unit via the manufacturer’s specifications. Jun 16, 2007 · 5076 posts · Joined 2003. . Take the ignition cover plate off. guitback. Quantity. Set front cylinder (marked "F" on base) first; then, set the rear Note: always check ignition timing whenever double circuit breaker points are adjusted since any change in rear contact point gap affects ignition timing. Aug 13, 2012 · SCHMIDTS or DAVE63, I was wondering how much timing you could put in for ( timing versus engine speed) right now my max timing is set out 29° at 3840 RPMS. I figured this was fine I just installed the new kit anyway. The adjustable pushrods have to be added, and at that, changing tappet plunger depth doesn't have the effects that it does on chevy V8. 5 pistons and will end up with 9. Or, as engine load goes up, manifold vacuum drops off, and at about 5 inches of mercury, the VOES completes the circuit and backs the spark down. The Feb 19, 2016 · By Weston Chadwick - February 19, 2016. Loosen the timing plate screws and adjust the plate until those marks appear centered in the timing hole. Tighten the timing plate screws securely. The Model 1005 EX replaces the original equipment (OE) electronic ignition system on these models. Aug 17, 2012 · Sportster timing cover screws. In this video, I'll be explaining ignition timing. D-641-1) for use with the following Harley-Davidson motorcycle models: All 1984-1999 Evolution 1340cc Big Twin . After some repairments I have to adjust them MYSELF. All 96 and later ignition modules are timed at 20degrees. E. Block off the fresh air injection systems. and has a stop for max Advance. key on, rotate EI unit clockwise until red light goes out. Set engine speed by turning idle adjustment screw clockwise to increase speed or counterclockwise to decrease speed. If you want the value of the advance timing (across the board) lowered from the map TBL value, set the DIAL at 4, 3, 2 or 1. If I connect to ported vacuum on the carb it will pop and die upon acceleration. An original condition, early Sportster with matching cases is a rare and valuable machine. For early 1980 one is the TDC and the other is the advance timing mark. Now, bump the rear wheel BACKWARDS until you see another mark. HD shop giving me the "they are self-tap setting, need to grunt them in" but I suppose because I'm a chick they can't get it No module, no VOES, nada. Timing screw spring (64409-47). Second, 44 degrees of advance is a lot. Plunger depth is only . 20773) Included Items: An overview of ignitions from the 1952 K-model to the 1985 Ironhead. To retard, turn same direction as cam rotation: counter-clockwise. 10 plus free shipping at Parts Giant. 2. The I turn motor until front cylinder advance mark is in the timer hole and make another mark on rotor . My question is, in degrees what are there values, the number of degrees between the marks? I'm putting in KB cast 9. Total timing is about 34. It will NOT work with a Dyna or any other ignition that uses a mechanical XLS1000 Sportster Roadster 1979-1985. in Oct 16, 2006 · Among many points it spoke to ignition upgrades from stock. Seems to be running fine without the vacuum advance hooked up. Buy Drag Specialties Advance Unit with Timing Bolt starting at $40. The simplest test you can do. Another good ignition for Shovels is from Daytona Twin-Tech. i need 3/4'' reach plugs for my XLR heads. Get good timing lite,nice an bright. Other Motorcycle Model:H-D FLH. These units are notorious for wearing out and not contolling the timing SKU 000566 Categories Electric, Electric Parts, Ignition, Sportster. A good economy ignition is the Compu-Fire Elite 1 that fits '71 - '97 Sportsters except kick Under high load, the switch signals the ignition module to electronically retard ignition timing to reduce the possibility of detonation. Set the amount of advance you want, say 35 degrees, on the dial-back timing light. Now turn your engine over very slowly until the front intake push rod goes up and then down again. Sportster/Buell Year #2:1993. I don't have that software on my computer anymore, but under one of the menus, you should see something like "get tune" or similar. The XL Forum administrators don't have access to the cookies stored on your mobile device or computer. Back off one step then start moving the initial up in the same way until you reach the ping point then back off to make it quit. Mallory uses three different. Note: Sportster models from 1971 thru 1982 and Big Twins from 1970 thru 1983 require that mechanical advance units and point ignitions, or early electronic ignitions and rotors be replaced by an OEM 32402-83 ignition timing rotor (CCI #75-211). It seems that the Sportster engine runs best when full advance is reached at 3200 RPMs. Set timing as per manual for dual point circuit breaker. Dec 16, 2009 · Tuning the EFI system of a Harley Davidson motorcycle increases the. Do not confuse this mark with the single dot--that is top dead center (TDC) for the front cylinder. The markings on the flywheel On 1971 to 1979 Ironheads, the advance timing mark is a straight vertical line. SA – Spark Advance Mode This mode shifts the advance table up or down within the range of –9 to +6 degrees, in whole-degree increments, to set the initial spark May 22, 2024 · Sportster/Buell Year:2000. Timing is all set to front cylinder. Advance unit assembly kit for Big Twin models 70-99 and XL 71-03 (except single fire ignition) when using a point style ignition; All items shown are included; Fits Big Twin models 70-E78 and Sportster models 71-E78; Replacement parts available: Breaker plate assembly (Part No. The engine has very little blowby but I don't want to try it Ignition Timing. b. All controlled by the magical V. I have also advanced cam timing as much as 10 degrees. Timing should be routinely checked once a year or whenever points are replaced. Aug 25, 2009 · When you unplug the shunt and idle the engine it is normal for the timing to advance. Mount plate hub is height . mixtures within specific ranges that allow the engine to work best. Aim timing light into timing inspection hole. I have a mark by the timing plate for this. This might be a little late but screw the clear plug in till it contacts the flywheel , it won't hurt anything and you'll get a clear view of the timing marks cause the plug scrapes the oil off the side of the flywheel as it's turning . If you have dual plugs, the rule of thumb is to set the static timing about 5 degrees retarded from stock as a starting point. Aug 4, 2021 · Anyway, the stock timing plate has a triangle notch in it, at least on later Evos and there's this triangle bump out inside that area, just line those up, advance a little, if it fires off great, move on to dynamic timing. They put in a mechanical advance and ignition points. As well as going over the proper advance slope curves, and choosing the right one. The upgrade which it thought was most valuable was the ingition upgrade. Apr 13, 2024 · 72 1000cc barrels and XLR heads, S&S 4-1/2'' flywheels, sifton minus-minus cams, S&S super A w/ zippers thunderjet w/yost powertube, Andrews gears,and shafts, 72 oil pump, Morris magneto w/auto advance and single fire module, cycle electric generator w/electronic regulator,73 cu. loosen the stand-offs, rotate EI unit completely counter clockwise. Availability: 1 in stock. If you want me to impress you, you Starting on January 3, 1969, the MoCo changed the size of the wire of the two ignition timer weight springs on Electra Glide and Sportster models to increase the speed at which timing advance occurred. S. '05 Carbed Night Train (Sold) 111 rwhp, 112 rwtq Best 1/4 ET 12. Find the advance timing mark and paint it. 59. Timing screw (1074W), #8-32 x 7/8“ fillister head, allows for minor adjustments. Things like ignition advance and retard, burn rate or flame speed, two-stroke and four-stroke timing curve The detonation problem with Sportster engines seems to stem from an improper advance curve. You should see a timing mark. tv Dont for get the "Museum That Runs: www. It is at the base of where the jugs merge into the case. Aug 6, 2002 · G. Turn the ignition unit counter-clockwise. Move the timing plate so that the proper advance timing mark shows up in the center of the timing hole. Vortec engines (yours is a Vortec) like timing at approx. Ignition time advance lowers the power at lower speeds. #1. 5X. #2 · Jul 2, 2019. With the engine off, disconnect the negative terminal of the battery. in A detailed video on how to static time a adjustable ignition module. 5. 0200" and OEM setting is . Today I switched out my stock 2011 Nightster timer cover for the chrome HD Motor Co one but the diameter of the chrome screws in the kit were too big so I've had to reuse the stock ones. Like. XLT1000 Sportster Touring 1977. Bike is on the lift and I already have the ignition module wired up on the Sep 4, 2008 · Point gap is . . A single-fire system works best because it creates the hottest spark. com See whats new h Spark is generated late during the compression stroke. #6 · Jul 14, 2006. 95 USD 03-07 Buell XB with Carburetor Conversion $49. Late 1980 uses the exact same two marks but they are reversed. You use the timing gun to align two little dots -exactly in the Insert a clear plastic plug to see the timing mark on the flywheel. Due to modern lower octane non leaded fuels I read that some on this forum are now setting their total timing to around 32 deg BTC. hook up all the plugs and check for detonation Step 5. without a timing light , is there a way to be sure the timing advance is correct? Then start the engine, set the idle for 1986-1995 models at 1800RPMs (40° timing - single dot) or set the idle for 1996-2003 models at 1000 RPMs (20° timing - double dots). Timing is adjusted by rotating the magneto housing after loosening the mounting bolts. 95. Harley Davidson Shovelhead,Sportster Ignition Advance Points Plate Timing Screws. I just put new T-Man 662-1 cams in last weekend. Connect the positive clip to the battery positive post and connect the negative clip to a convenient ground. XLX1000 Sportster 1000 1983-1985. To advance, turn opposite direction of cam rotation: clockwise. 4 weeks ago. I'd suggest saving a copy just in case something goes south. 31355 posts · Joined 2008. Set static timing using the advanced mark on the flywheel, and hold the ignition rotor in the advanced position (counterclockwise). Www. I was perusing a couple of Rider's Handbooks (1968 and 1969 Sportster) and found something interesting. 1952 to 1964 use 6V coils. I was having so much of a Jun 2, 2019 · The Compu-Fire HDE-1 Ignition kit includes the ignition module and wiring, the trigger rotor, a socket head screw, a flat washer, terminal connectors, and a stack of small magnets (these are used to turn on/off the timing light in the module to static time the ignition). Yes and seal first then washer, then spring, which I don't see in Nov 4, 2016 · Once you plug the PCV into your computer, you should be able to pull down the existing map. Sportster/Buell Model #2:XL 1200. Select this for engines with high-performance modifications (cams, increased compression, increased displacement, etc. ^^^ correct. Systems use magnetic rotors with Original Equipment spark advance mechanisms to retain the factory advance curves and replace points and condensers with a high-performance dual or single-fire system. 10-32 x 2″ …Fits Shovelhead and Sportsters. 72 1000cc barrels and XLR heads, S&S 4-1/2'' flywheels, sifton minus-minus cams, S&S super A w/ zippers thunderjet w/yost powertube, Andrews gears,and shafts, 72 oil pump, Morris magneto w/auto advance and single fire module, cycle Apr 20, 2013 · Look into the timing hole. Using an advance timing light helps too . Somewhere in the archives DD recommended Autolite AT4 for a mag. Then shoot the light into the timing hole. Have a question? Please and customers who own this product. those are the common 1/2'' reach plugs. 8 compression. This mechanical advance assembly features stainless steel shaft and plate with hardened steel pins to hold the weights in place. My bike normally has 170 HP / 190 TQ. on an overhead valve Sportster? this caught my attention yesterday but i didn't respond. 99. Feb 4, 2014 · Get yourself a Crane Hi-4 from J&P cycles, it's single or dual fire with adjustable timing and RPM limiter. Aug 19, 2009 · 3. Ignition time advance is done to increase power at high speed. It’s smooth, accurate and reliable! Add to cart. $38. Doesn't matter where I have the base timing set. This should be the ADVANCED TIMING MARK. Uses #12-24 x 15/32” countersunk flat slot head screws (1865W) to hold plate to cam cover. If you have an ignition with an external black box, like the Crane Hi4E, you'll find just a timing plate with no black box. The mechanical advance in 1971-1979 bikes wear and break. This is the Top Dead Center mark. Jul 21, 2023 · Sportster 883 CV Carb Needle. With a paint pen I mark the stator rotor and inner primary with a line. 0100". Maximizing the benefits of tuning an EFI system can increase power and. twist the tube on the left side handle bar counter clockwise/forward to retard timing for starting then turn backwards/clockwise to advance timing for riding. You also have to take off the timing cover (the thing w/the "5-Speed display) to get to the timing sensor. I would set the points first then use timing lite through the hole in crankcase to set timing properly. timing, by 15 degrees. Apr 15, 2024 · 72 1000cc barrels and XLR heads, S&S 4-1/2'' flywheels, sifton minus-minus cams, S&S super A w/ zippers thunderjet w/yost powertube, Andrews gears,and shafts, 72 oil pump, Morris magneto w/auto advance and single fire module, cycle electric generator w/electronic regulator,73 cu. EDIT. 375”. The author went on to say the Screamin Eagle ignition module was well worth the money and served well to improve stock performance. 1) This uses a Dual-Fire Spark system, using only one coil trigger wire to produce a spark on both plugs at the same time. Higher compression speeds the burn and timing advance must be reduced from the factory level when installing an engine kit. i knew his '59 CH had XLR heads and asked what he used. Look for slot in hole so you'll know what to look for with lite. This article applies to the Harley Davidson Sportster (1994-2016) Optimum engine performance is the result of a combination of process that occur at the right times and the right amounts inside the engine. 022 for both sets of points. If you are using stock ignition you do not need to verify rear cylinder timing. #2 · Jun 17, 2007. vtwinmfg. tighten stand-offs. rotate engine until TDC mark on compression stroke is in the timing hole. It may have a stumble. Timing a Harley made simple. 1986-1993 XLH 883cc and 1986-1987 XLH 1100cc Sportster . Then start the engine, set the idle for 1986-1995 models at 1800RPMs (40° timing - single dot) or set the idle for 1996-2003 models at 1000 RPMs (20° timing - double dots). 1980-1985 put electronics in a module under the seat. Adjusting the ignition table could also help in deceleration popping. Wheelsthroughtime. #2 · Oct 24, 2022. The big fins both maintain the proper appearance and the proper cooling capability for your bike. I just finished static timing the points on my carb converted 2014 sportster. $ 12. The stock timing on all HD models is too aggressive for the increased compression that typically comes with a performance engine kit. Check out my network here: https://daleschannel. If this helps you know the ign is timed to far advanced for the fuel your running, or you richen up the mixture and give it more fuel to burn. Jul 2, 2019 · 23440 posts · Joined 2011. a. Mar 29, 2012 · timing - mechanical ignition. question is about timing . 3. For a stock Evo, dynamic timing is 35° maximum advance @1500 rpm. The four lowest production years in Sportster history were 1957 (1,983), 1958 (1,555), 1962 (1,998), and 1963 (1,433). With a mechanical advance the timing at idle would be 2 deg BTC as a result. Find the specifications for your particular engine in the owner’s manual or online. The two marks are the dot and the line. Dec 26, 2015 · 49523 posts · Joined 2006. The most serious inconsistency, and well worth noting, is the 1980 Sportster. Install the inductive pickup on your timing light over the front cylinder spark plug. 4. Oct 24, 2022 · 897 posts · Joined 2021. In the '68 handbook under ignition timing instructions for the XLH ( with automatic advance timer), it directs one to set the timing on the retard flywheel mark ( double line) and , in doing so, to leave the points cam in the Jun 4, 2014 · Making your total timing around 10-15 (I don't remember the actual advance mechanical gives) The advance mark is X BTDC. switch! Jun 20, 2022 · The Delco distributor on carb engines changes the timing advance using the programming in the ignition module since it does not have physical advance weights and springs like older distributors that use centrifugal spark advance. First the VOES retards the timing based on a fixed amount of retard at a preset amount of vacuum. On a Harley engine, 4 degrees equals a movement about 250 - 350 RPM. could increase the mileage of the bike. Dyna 'S' ignitions change timing less than 3 degrees from 0-8000 RPM and feature improved performance, easy installation and a 3-year factory Jan 12, 2008 · 2. Get the kit installed and wired up I lined the new ultima module on the marks I made for the old timing I programmed the switches as per the manual for a single fire set up and the 2nd curve setting. On world models, idle speed is 950-1050 RPM. -or you can buy the whole me Jan 17, 2012 · Hook up a strobe timing light and see if you actually have a spark taking place inside your engine when cranking. Remove it turn engine over slow,by kicker if you got one. Twin Tec ignition Model 1005 EX is 50 states street legal (ARB E. SETTING PRECISE ADVANCE TIMING FOR RACING USING DIAL BACK TIMING LIGHT Determine the advance you want at 2,500 RPM. 28 posts · Joined 2002. So, setting the timing on my 66 and when I put the vertical line in the timing window, the points arm sits almost on the middle of the large lobe - shouldn’t it be just Want to make more power? How Does Ignition Timing Work? How to tune ignition? In this video you will learn tuning secrets and how to tune ignition for your Apr 26, 2020 · How do you set the timing on a Harley Sportster? Start the engine and aim the timing light through the clear timing plug. One of the benefits to ignition upgrading was the advanced spark timing as the Dec 18, 2022 · Here are the steps you’ll need to follow: 1. This is what you'll find inside the cone. FX series Big Twin@ and XL series Sportster@ models prior to 1984, FL series Big Twine models prior to 1985, and all models with O. 5:1 compression ratio. Jul 10, 2009 · This is the Top Dead Center mark. Start the engine. 00 with. Crane Electronic Ignitions Jun 2, 2008 · "Timing for dummies"In this video I show how I gap the points and set the static timing on my 1975 XLH-1000 Ironhead Sportster. If you have engine cases with matching belly numbers and a correct frame, consider restoring back to original. Auto Advance unit fits Big Twin and Sportster. I'm working on my 2003 883. Watch for the pair of dots that mark the advance timing position. Compare the advance system in your distributor with the assembly shown in Figure 4 to determine if you have a YH. KB recommends backing the total advance off by 2-4 degrees. magnum45pete said: this set up alows for some sort of Advance/retard cable,as the head can be turned real smoothe when fitted. #2. ) exceeding 10. com Mechanical advance on early models. or YT advance system. The fuel system, ignition system, and mechanical systems must be in sync to develop power. Use a dial-back timing light. I know 2014-2016 had a strange timing curve to keep up with emissions standards. by Drag Specialties. Jul 26, 2011 · First a little background, 1996 sportster 1200 c ,screamin eagle ignition and coil , super e S&S carb, Vance & Hines pipes. The advance curve in various HD ignition modules gives full advance around 2500 Feb 1, 2012 · single dot is 35 degrees btdc (domestic timing) double dot is 20 degrees btdc (international timing) line is top dead center front cylinder. On a Crane or DTT start at 0,0 or 0 initial and your current setting for slope if you have no pinging now and move up one notch slope at a time until you experience pinging. unless you have a race tuner and can turn off the knock sensor, the all the "advance" type timing changes in the world won't matter because of the ION sensor. This will advance the timing. remove one plug wire from each head, that will slow the rate of combustion chamber burn slower. 5:1 domed pistons (available in the 1275 kit only). that didn't help me. Sport bikes and Cruisers: 1. You get 2 bolts per order…. Learn more. No. I have my boost set at 12 pounds. 95 USD Jan 15, 2008 · At full advance the timing should be 40 deg BTC. In 1983, a Vacuum-Operated Electric Switch (VOES) was added to switch between 2 different spark advance curves built into the ICM. C. Mar 9, 2017 · The cam drives off the flywheel, and turns the opposite direction, counter-clockwise. 557s Best 1/4 MPH 108. No detonation issues. Add to cart. 1977 KZ650B1. Not sure of all the years…. O. This trick works just the same, regardless of where the black box is. Jun 23, 2022 · BLUF: When I connect vacuum to my distributor the engine coughs and immediately dies. Start engine,escapeing oil is only lite spray,point lite at hole and move distributer to taste. Timing light will flash each time ignition spark occurs. Try this. I put mechanical ignition (not electronic) to both of them from Ironhead 1973. Directions to time the mag Jan 23, 2010 · I've played with cam timing quite a lot. '21 LowRider ST 126 rwhp, 134 rwtq, Kinda stock. Feb 22, 2010 · 29363 posts · Joined 2009. Does this sound about right, or should I advance the base timing? Sportster Motorcycle Electrical and Ignition The XL Forum cookies are only used to keep you logged in. Big Twin 1970 and later w/auto advance (#1296) Sportster and Flathead 1957-'70 (#1277) Big Twin 1970 and later (#1276) Joe Hunt "Buzz Box" Timing Buzzer: View Older Harleys® and certain race ignitions require a mechanical advance timing unit for their ignition systems. Left side of motor at number boss is plug,allen head I think. Use some BraKleen to clean the flywheel. Determine the advance you want at 2,500 RPM. SKU: 372-327. Retarding ignition time increases power at lower speeds. On this model Sportster the timing is advanced by a mechanical advance mechanism. Sportster/Buell Year: 1966. In low-load conditions such as cruising at light throttle, the ignition stays in the advanced mode for increased fuel economy and lower operating temperature. It lowered the HP to 160 and raised the TQ to 219! May 6, 2024 · Sportster/Buell Model: XLH. The only "valve timing" you could "adjust" would be with changing cams. Sep 18, 2012 · Dave63. Aug 12, 2015 · Its a good idea to check that the front piston is at top dead center and find the timing mark in the window to time the engine( timing a stock evolution spor Nov 5, 2009 · On the cam sensor plate on a 99 evo there are small graduations to adjust timing advance or retard. 194 ENTRIES 🎟️. Here is a video link with my bike with a 10 degree advanced cam timing. Mar 22, 2010 · Make sure you got good ign stuff in distributer. I have 2 bikes: evo 1998 and sportster 1987. Retarding ignition time lowers the power at a higher speed. Advance the timing in the zero percent column 3 to 5 degrees to see if popping has been reduced. efficiency of the Electronic Fuel Injection system by keeping the fuel. 4 hours ago. advance timing mark is centered in the observation hole. You’ll need to know the correct position of the crankshaft and camshaft for your engine, as well as the firing order. Remove the front intake push rod cover so that the opening and the closing of the valve may be observed. And when I went for a ride my boost went up to 16 pounds Rotate camshaft position sensor until advance timing mark is centered in the observation hole. #4 · May 19, 2015. In 1980, the advance timing mark on Sportsters was changed to a single dot, and top dead center was changed to a "lazy eight". H20220) Advance unit with bolt (Part No. There are 6V and 12V coils that look identical. As a SAFETY PRECAUTION, you should always set the INITIAL TIMING DIAL to 5 (same as 0) whenever a new map is loaded, which will utilize the map timing values as programmed. The piston should 7/16" down from top dead center. This will reduce the air being fed into the pipe, causing the higher exhaust temperatures and detonation. On California models, idle speed is 1150-1250 RPM. Jul 12, 2006 · 5914 posts · Joined 2004. mechanical advance systems. Now you can shoot timing light thru Oct 14, 2017 · -in the video i say use small amount of greaseinstead should use very light coating of oil on rotor shaft, per manufacturer. Tuning an EFI system also. Other Motorcycle Year:1980. #6 · Aug 22, 2002. Start the engine and aim the timing light through the clear timing plug. This was to insure that the spark timing would be fully retarded at cranking speed and will advance gradually as RPMs increase to the fully . Anyone ever have trouble seeing the timing marks thru the clear plastic plug on a 95 Sportster 1200? I was thinking of cleaning the timing marks with gum cutter using a wooden Qtip and then painting each dot with white engine paint using another Qtip. It goes to 32* at 2200 RPM. Pay in 4 interest-free installments for orders over $50. In Buzz Buzzelli's book on Sportster Performance, he describes the problem in detail. Tighten the standoffs and verify that timing has not shifted. Ironhead 1966 xlh timing. Machined Steel Timing Rotor Application 86-03 XL, 84-99 Evolution Big Twin, replaces OEM 32402-83 $49. I always had help from my friend who adjusted the ignition but I cant contact him anymore. Here's what it's like to set the timing on an Evo Harley without a plug to keep the oil from spraying out. #3 · Feb 24, 2010. Like Green Giant says the number BTDC will be higher. Apr 11, 2024 · a K model oil pump?. Feb 11, 2018 · Setting the ignition points and spark timing on a Flathead, Knucklehead, Panhead or Shovelhead Harley with a manual advance distributor. The timing plug is on the right-hand side of the motor. #9 · Sep 19, 2012. Then edit your map to your new specs, save it and push it May 26, 2024 · the ION sensor will retard the spark until the "knock" goes away, and this happens in milliseconds. 7-9. For cams with intake close timing over 45 degrees, choose 10. FYI HD plugs get colder as the number goes up. Can anybody tell me if I need to fit these two on my carb needle, the bike has been spitting back for quite a while, I spotted these two on the crank case right below the carb, the bike does run lean, at the moment there is no spacer on the needle. #2 · Dec 26, 2015. No flashes = no spak = dead engine, and you need to find the source. Early and late 1980 are separated by the crankcase numbers, commonly referred to as belly Jun 21, 2020 · Turn the engine by hand until TDC mark is centered in the timing hole and verify both front valves are close and front piston is up. May 9, 2024 · 1966 xlh timing. Remove the screw plug from the timing hole on the left side of crankcase. The ICM computes ignition timing advance and coil dwell. Start engine. Other Motorcycle Model: Aermacchi Sprint H. If the light flashes, you have spark and can check the timing. Uses tach mag and SEAL STYLE B. SETTING PRECISE ADVANCE TIMING FOR RACING USING DIAL BACK TIMING LIGHT. Jul 4, 2019 · Decided to change out the points, condensor, and timing advance on this 76 Ironhead Sportster that I'd been working on for a while. points will require H-D@ timing rotor P/N 32402-83. I know that ignition (spark - timing) has to be May 19, 2015 · 3465 posts · Joined 2009. now i know with early bikes its easy, you just conect it to the left advance Spiral on the handlebars, May 31, 2016 · Timing the Engine: 1. Good solid ignition and can be switched to single fire by adding a single fire coil. 32* @ 3000 - 3200 RPM. Choose flat top pistons if you're using the stock cams, or any other cams with intake valve close timing earlier than about 45 degrees. Jun 12, 2011 · This kit allows the modification of the advance curve of any Mallory distributor with the YH or YT advance system. If you want the values raised, select 6, 7, 8 or 9. I would like to go to possibly 32° advance. Plus the Z from the mechanical advance, makes the total timing in order to catch the sweet spot for the flame or ignition as running in the 15 degree range ATDC as it takes time for the explosion to occur. Other Motorcycle Year: 1966. I have the ignition timing set at 33` BTDC. TIMING: The ignition is timed in the advanced position to occur when the front cylinder piston is 11/16 inches (or 45 degrees) before top dead center. This means that the mechanical advance was set for 30 deg when it left the factory. The 1979 electronic setup needs resistor wires and plugs. Timing will now correspond to the curves in Figures 5 or 6. Right now, I have it set to 6* BTDC at 1050 RPM. ff tj ey ff qd je ee fj zl ou