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| post your ignition maps for your boosted slants https://slantsix.org/forum/viewtopic.php?t=59034 |
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| Author: | kcuf [ Thu Jan 28, 2016 3:41 am ] |
| Post subject: | post your ignition maps for your boosted slants |
just wondering how far any of you guys have gone timing wise with a stock cammed slant? i am keeping mine at what i think is pretty conservative at the moment, only winding 12deg into it with 5psi, to keep things simple, here's a screenshot of my current situation, im currently working on my VE table before i start winding any timing into it, i will also wind the boost up a bit more,  annnd my current setup is MS2 6x LS2 coils 36-1 trigger wheel rx7 series 5 hitachi turbo |
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| Author: | billdedman [ Tue Feb 02, 2016 2:41 pm ] |
| Post subject: | |
My turbo slant is a race-only application with no street driving at all, ever. Because of that, I don't worry about gas mileage, engine heat or driveabiity. That allows me to run what the engine likes for power.... which seems to be 18 degrees. I have an old Lean Burn slant six distributor that came with NO centrifugal advance mechanism and no vacuum advance diaphragm; the plate is locked down, solid. So, it starts and runs all the way to its 5,500-rpm redline, with 18 degrees of advance. It seems to like that. I could not get away with that on the street. Bill |
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| Author: | kcuf [ Tue Feb 02, 2016 4:34 pm ] |
| Post subject: | |
Yep slightly different application. how much boost are you running and do you have any idea of your intake temps etc, What fuel do you run? I am up to 15 deg at around 6psi now, but I lost my fuel pump yesterday, luckily it died off throttle was 2nd hand unknown condition. I have a new one on the way now, slightly painful as it's an in tank setup |
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| Author: | gtb123 [ Sat Mar 12, 2016 9:15 am ] |
| Post subject: | |
Hey Kcuf, Do you have any detonation problems running that much advance? I'm trying to plan ahead to take the steps to prevent detonation in my build, because I don't have it assembled yet. Any tips for me? 10-12 psi Stock 225 Intercooled blow through IAT sensor installed. |
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| Author: | kcuf [ Mon Mar 14, 2016 2:08 am ] |
| Post subject: | |
Quote: Hey Kcuf,
pre turbo i was having the odd bit of detonation at part throttle up steep hills on a hot day, but i think i'd sorted that out with the above maps, i haven't had any detonation at all since boost, which is how i am planning to keep it all things going well.Do you have any detonation problems running that much advance? I'm trying to plan ahead to take the steps to prevent detonation in my build, because I don't have it assembled yet. Any tips for me? 10-12 psi Stock 225 Intercooled blow through IAT sensor installed. My maps have changed a bit since then also, i will grab a screenshot of the current setup and re-post where I am at now. I am still running no cooler, so timing is still pretty conservative, I do need to either shim my springs or replace them as i am pretty sure even at 5-6psi it is hurting power north of 3500 or so rpm. This is my first boosted slant so i cant say i really have any awesome advice, other than keep it conservative and work your way up, what are you going to be using for ignition control? by blow through I am guessing you are going carb? |
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| Author: | gtb123 [ Tue Mar 15, 2016 6:22 pm ] |
| Post subject: | |
Yeah it's carbureted. I'm going to use HEI with a standard cap and rotor on the stock distributor. From what I understand, I have to retard thd timing to an extent in order to prevent detonation when using pump gas. I want to avoid retarding it if I can so I don't have sluggish start ups, so I was wondering how many degrees people have played with on a stock slant with an IC. We'll see though! Definitely going to start conservative and push it to a reasonable location. |
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| Author: | Ssg Pohlman [ Thu Aug 18, 2016 3:10 pm ] |
| Post subject: | Timing |
For my build I used a regular super six dizzy, I believe w the 9R slot. I then used the spring kit that is sold by one of the memebers (check in appropriate area) dont remember the colors but I did set my timing to 23*. I also run a 5 pin hei module from an 80's toronado. The small 5th pin when grounded pulls 5* timing which in turn limits me to 18* total. That 5th pin I set up on a hobbs switch to 5# of boost. So, 23* timing max, bosst builds to 5#, hobbs switch closes which grounds out the toronado hei module and pulls 5* and I end up w 18*. This is all at 10# total boost with a blow through, intercooled setup. Builds noted under turbo d150 i believe. |
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