tjz70 Posted September 4, 2006 Report Posted September 4, 2006 A friend of mine has a Hot Shot ignition box, He bought it new tried it could'nt make it work and gave up. He told me its supposed to give a extra 1000 rpm, and it jacks with timing some how. I run anywhere from +4-6 on mine, and it runs good there. Does any one think it would be a gain or just a head ache? He want a $100.00 for it. Is there anything i need to be aware of? don't want to fry my motor? any replys would be great. thanks Todd Quote
dajogejr Posted September 4, 2006 Report Posted September 4, 2006 Stay away from it. 1000 extra RPM on a two stroke is not controlled by the igntion....there are NO rev limiters placed on the ignition... Porting, intake, exhaust and compression all are the major players in how far your engine can rev. Unless you're going to buy a dyna ignition (three times that price) and have the means to set your own curves on a dyno, stick with the stock CDI box and a timing plate... You can buy a brand new SRP CDI from magic which "claims 1000 extra RPM" as well....not worth it... Quote
tjz70 Posted September 5, 2006 Author Report Posted September 5, 2006 Stay away from it. 1000 extra RPM on a two stroke is not controlled by the igntion....there are NO rev limiters placed on the ignition... Porting, intake, exhaust and compression all are the major players in how far your engine can rev. Unless you're going to buy a dyna ignition (three times that price) and have the means to set your own curves on a dyno, stick with the stock CDI box and a timing plate... You can buy a brand new SRP CDI from magic which "claims 1000 extra RPM" as well....not worth it... Hry thanks for the advice, i thought something sounded funny about it could'nt figure out how you could get more rpm out of just a cdi box. Mine still works fine he was just offering to let me try it. NOT GOING TO HAPPEN lol. Thanks again!!! Quote
dajogejr Posted September 5, 2006 Report Posted September 5, 2006 It probably has a different ignition curve, you won't feel a bit of difference seat of pants I'd bet. You'd be better off just getting a timing plate and advancing it that way.... Quote
tjz70 Posted September 5, 2006 Author Report Posted September 5, 2006 It probably has a different ignition curve, you won't feel a bit of difference seat of pants I'd bet. You'd be better off just getting a timing plate and advancing it that way.... i did'nt think it would be it worth it. I run my timing + 4 to 6 and it runs great there. Its not the fasted but it will opoen your eyes when it launches got a hell of a hole shot just need pipes and a 2-5 over ride and a few other goody's and hang on, thanks dajogejr. Quote
YFZ350kid Posted September 5, 2006 Report Posted September 5, 2006 well, considering this thread has to do with timing, this may be a good time to ask. just for a bit of info on me, Im studying to become a BMW technician, so i know a little bit about electrical stuff... but anyway, on newer cars with electronic ignition controls, timing is only advanced for initial launch, and is then retarded for economy as well as max rpm efficiency... now, advancing the timing out on a 2 stroke should give you a much better low end torque curve, but if your going for full on top speed, shouldnt you retard your timing a few degrees? Im wanting to know this because im planning on doing a build up on a 89 shee in the next few months. I would like to make it as far from stock as possible, so ignition upgrades are in the plan. Quote
tjz70 Posted September 5, 2006 Author Report Posted September 5, 2006 well, considering this thread has to do with timing, this may be a good time to ask. just for a bit of info on me, Im studying to become a BMW technician, so i know a little bit about electrical stuff... but anyway, on newer cars with electronic ignition controls, timing is only advanced for initial launch, and is then retarded for economy as well as max rpm efficiency... now, advancing the timing out on a 2 stroke should give you a much better low end torque curve, but if your going for full on top speed, shouldnt you retard your timing a few degrees? Im wanting to know this because im planning on doing a build up on a 89 shee in the next few months. I would like to make it as far from stock as possible, so ignition upgrades are in the plan. Well i hope you have a realy big stack of $$$$. Yes, you do get awsome low end torque. But depending on what type of engine setup you have and what you are doing with it is what will make the differents. I run sand & dirt drags 300ft. there is'nt much time to advance & retard the timing when its over in 3.5 to 5 seconds. dyno tech makes a cdi box that you can adjust your curve and get a few more horses out of it. Don't know much about them so i dont want to mislead you on them. And a 2 stoke is base more on inlet and outlet of fuel, meaning the carbs, pipes and the porting play a major deal in the way it will preform your port timing can make a differents on the type carbs,jetting and pipes you have and you have to adjust the timing to that. what type of fuel with the compression you have and. I have a full drag port (10 port ) hot rods and crank caseshave been trenched cool head (19cc domes ) which means higher compression & that = 114 octane or at least a 100 or better. for some good info that is pretty interesting check out macdizzy.com/2stoke the got charts that can even tell you how tune pipes are built good info site i could go on for ever on different sit ups on 2 stokes and i still search hq for more advice because i damm sure dont know it all. maybe this will give you something to reserch. Quote
dirtyernie52 Posted September 5, 2006 Report Posted September 5, 2006 the only rev limiter on a banshee is the pipes. Quote
tjz70 Posted September 5, 2006 Author Report Posted September 5, 2006 the only rev limiter on a banshee is the pipes. I agree, they can hurt you bad, I will be selling a set of t5's with in a month or so if you know anybody interested no top end it jsut falls off,hell bent out of the hole till about half track ( 300ft.)thaen it start to fade away. I want cpi in or out frames sheare out small bore something good for drag only. Quote
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