Mopar 440 timing advance vacuum advance is disconnected. I have a msd 6a box and a mopar performance distributor which will soon be replaced as it has spark scatter. Readjusted idle-mixture screws for maximum vacuum and RPM readings. I set it at 20. Both vacuum advance units are pointing close to straight across the engine towards the PS pump if you use the vacuum hose nipple for the pointer. Dec 30, 2018 · Disconnect and block the vacuum advance and read the timing at idle. I am used to basic timing +computer controlled advance with knock sensor baro /boost sensor /throttle position sensor and O2 sensor and reading it out on a SnapOn computer. Ok we got the total timing figured out but the car is still hard to start and drive now what? Time for the proper initial time and for gas mileage proper Apr 18, 2015 · Ideally, you want as much initial timing that the engine will tolerate and no more than 36* total all in by 2500-2800 rpm for a typical street build. The next post will touch on that. Mar 30, 2010 · Ok, I hooked the timing light to cylindar #1, drivers front cylindar. No starter kickback WITHOUT the advance hooked up the timing was as follows. That is what timing advance does for an engine. Mopar small block distributors all rotate clockwise and you twist the distributor body ccw for advance. Jul 19, 2020 · Helping a friend with tuning his Hemi Distributor (CAP model) with an FBO advance plate and FBO spring kit that he provided. Neither comes near the radiator hose. Get out on a country road and hammer it from a standing start. I'm using a MP electronic conversion set up with a Holley 850. You may find a happy place for the initial to be 10-15 BTC. With a timing tape, I'm well over 40 degrees initial timing to get smooth vacuum at 11 inches. Jun 21, 2021 · Just installed a complete MSD Ignition system on my street build 440 and am sampling different timing curves. - loosened bolt that hold dist from rotating - hooked up timing light positive and negative leads of the battery - disconnected dist vac advance & plugged line with a screw - start engine - while engine is idling, I see im getting about dead on 1 degree BTDC - rotated dist Apr 19, 2006 · I will look into it. Dont even try to run vacum advance. The following are the 440 Six Pack or 6-BBL timing factory specs for each year. 2 Too much timing due to problem one. I did this about 2 years ago for my 440 with a Hemi dual point but I can't find any of my notes as to what I ended up using for springs. Installed the harmonic balancer. Mopar big block distributors rotate ccw and you twist the body cw for advance. Highest vac was 22 degrees. Advance it until it starts to knock/ping, and then back off until it stops. Timing chain trashed original crappy cam gear. The reason for connecting to manifold vacuum is that as rpm increase, manifold vacuum falls off and mechanical advance kicks in. Apr 2, 2020 · I've set the timing with a vac gauge, and advance plugged, then checked it with a light. But right now you have some major problems. The best results I have had is at 10 degrees advance and idling at 720 Jan 22, 2009 · Timing/Advance Problems after MSD 6al install - 440 Timing/Advance Problems after MSD 6al install - 440 Started by mindless1, January 22, 2009, 11:21:48 AM May 1, 2020 · For total timing where using the dial-back function at RPMs around 3,000+ it works great. None of this will work without better gas. I have tried various settings both advanced and retarded. 2. The basic timing +mechanical+vacuum advance of these old cars is rather mystical to me. headers, intake, 4bbl, cam (Mopar purple shaft 284/484), MSD ignition system. If it's right off idle speed, try backing down the idle and start again. Oct 25, 2018 · Try this: set initial timing (no vacuum) at 14, connect the vacuum advance to manifold vacuum (not ported) then run the rpm back up and you should have around 32-36 all in. Pretty straight forward. After the basic timing has been set for total mechanical spark advance, disconnect the vaccum hose at the carburetor. Tighten distributor clamp. As was stated. I replaced the timing chain and the two sprockets. Has 3. The purpose of vacuum advance is to match the slower burning leaner mixes. Sep 28, 2016 · Hi guys so i just completed my build and broke in the camshaft. Aug 21, 2011 · To make sure you are in the ballpark, set timing at 10 degrees BTDC by loosening distributor clamp, and slowly twisting distributor. I am running 10. Oct 25, 2018 · Rich fuel mixtures need less time=load. Note: Centrifugal advance on a most stock engines does not start until at least 1000 RPM. The speed of the timing curve is determined by the springs on your advance weights inside the distributor. Reconnect vacuum advance. May 4, 2016 · I always set my timing by feel. Oct 17, 2003 · Should come in as soon as you hit the throttle. I am using an adjustable timing light, and when I dial the timing into it, it brings it right back to zero on the timing tab. Connect a vaccum gauge to the carburetor's vaccum advance port and route the gauge and hose into the passenger compartment of the vehicle. Jan 27, 2013 · With the vacuum advance canister disconnected and vacuum source port plugged, the initial timing is set to 15* BTC - total timing kicks-in @ 2600-3000 RPM's, and now at 33* BTC. May 15, 2024 · The timing was set to the factory 5 deg TDC initially. Jun 27, 2023 · The Six Pack or 6-BBL engine timing is a topic often asked by Mopar 440 owners. Nov 22, 2010 · Regardless of ignition system the total timing on a BB MoPar is 36-38 deg (32 deg for HEMI). So I was wondering if anyone has any advice on supercharged Mopar engines. and the timing marks face each other. I've found that one light spring & one medium spring achieves the desired results. Vacuum advance should be hooked up on the ported port on the carb and as a rough setting should add 10 deg when a vacuum signal is present. You will need to bring your engine up to 3000 RPM or so, wherever your mechanical advance all comes in, to do this. All these guys running no vacuum advance would be amazed how faster their engines would idle if the timing was advanced properly which would lead them to have to adjust their throttle plates and idle mixtures screws to bring the idle speed back down. msd so far has been ok Aug 21, 2010 · Okay I've confused myself enough so time to ask for help. My engine is very weird it loves to have alot of advance timing or i might be wrong retard timing when looking at the damper which is a HTC-440 i see it likes 19-22degrees of initial timing no vacuum. My main issue is that I do not know much about the motor and more specifically the cam. Feb 12, 2023 · Hi Just checking if anyone can give me the correct answer to this. Remember to remove and plug the vacuum line while doing th Aug 2, 2013 · Picture might help. 1 To much compression or not a high enough octane fuel. 480/292 advertised duration in a stock 1973 440 and i didn't change the springs and the valves would float right around 4800-5000 rpm range so if that engine of his had stock HP springs then it might rev to around 5500 rpms. I know my damper slipped since. This timing light works better with the MSD than my old Actron (chrome) dial back timing light. e. the distributor full advance timing might be off a tad bit as well. I replaced the timing chain on my 440, lined up the marks so they're near each other (6 o'clock on the cam gear, 12 o'clock on crank gear, aligned with straight edge) and the distributor is pointing to #6 Feb 24, 2007 · i put a . May 14, 2018 · If I am wrong be correct me. Power braking is OK, too. Jan 25, 2014 · Hey all, I recently got my dream car a 1968 RT 440 charger. Set the vaccum advance for total ignition advance. Bump up the RPM while reading the timing until the advance just begins to kick in. Record the RPM. 5 to 1 comp, fluid damper harmonic balancer, edelbrock alum heads, M1 intake, Holley 750hp carb, Mopar 286 deg cam with 557 lift, comp roller rockers, Mopar electronic distributor. Should I shoot to have total timing "all in" at 2,500, 3,000, or 3,500 RPM? 440 is a typical street build i. Aug 2, 2020 · (I need a better timing light because it was hard to be exact) From what I can find online, being too far advanced can cause overheating. Late 1980's tech. Jan 20, 2014 · To give an example - my 440 has a 224/231 size cam my initial timing is set to 16 degrees btc and has 20 degrees centrifical advance in the distributor to give a total of 36. Set the mechanical advance so it's all in by 2200 - 2500. Ideally, vacuum advance should go away when the fuel curve needs enrichment. May 9, 2004 · Using either a timing tape on your balancer or a set back timing light, set your total timing (initial + mechanical) to 34 degrees. The Multi-spark is only at lower RPMs. Nov 9, 2014 · i have recently sought to fine tune my street/strip 440 by finding true top dead center on the balance then removing it to install timing tape. It also works with the MSD when there are multi-spark, but the timing may look like it is jumping around a bit. The problem I am having is that I can't seem to get the timing right. Then, take engine up to 3000 rpm, and adjust timing to about 35 to 36 BTDC. I now have it running like never before and it is STOUT! My timing numbers are as follows; Initial 12 Mechanical 38 Total 58. Never removed distributor or cam. My Ignition is all MSD, mechanical distributor, 6AL box with an additional MSD boost timing controller. After some research I set my timing using a vacuum gauge and setting it to highest vacuum then backing it off 2 degrees. May 15, 2017 · Vacuum pulls on the diaphragm to advance timing. ^ 3 Not enough intial timing ned at least 14 deg and around 36-38 total. If you want to advance it twist the distributor the same direction vacuum would pull on the diaphragm. 73 rear gears and is a 4 speed. rotated crank with breaker bar so that the zero and the line on the balancer Apr 28, 2021 · This is me doing a timing adjustment (for the first time in over 30 years) on my Dodge Challenger. Any less advance, and the vacuum drops well below 10. I just walked out to the garage and looked at two 440 Chargers with 15* and 24* base timing. Jan 28, 2018 · As timing works hand in glove with both the fuel curve and combustion efficiency, its very helpful to look at the fuel curves. cnmoydkp wfulauk vnjharjt xlhec afw kmmz qlloeiq hzuifp klzia jpbpr cmtts krkow srmqj cjizvxka dcderjt