conversion completed on 2003 sportster
conversion completed on 2003 sportster
I have completed the conversion on my 883 ( stock 883 heads,1200 cly's with 10 to1 wiseco piston ,an Andrews N4 cams ),,, this thing runs great,,very stong,,now I know what what you guys call running like a "RAPED APE" is,,,cann't wait till I get her broke in good ,, so I can really get on her good,,,,BUT,,,I would like to know if I need to get the timing checked and what should it be,, I put it back where it came from STOCK,,,,I mark it with a perment marker,,so I know it back right where it came from,,,but with new cams being on a differnt advance grind,, i would think the timing should be changed too,,,but as it is this bike is running so good i hate to mess with it,,,SO WHAT I'M ASKING ,,SHOULD I CHECK IT AND WHAT SHOULD IT BE AT,,,,,,,,,THANKS FOR ALL YALL'S HELP ON THIS AND THE HELP YALL GIVE ME ON ME MAKING THE CONVERSION EAZIER ON ME,,,,,,
Ultimate HDF Member
Joined: Mar 2008
Posts: 7,604
Likes: 38
From: Landrum, SC , elevation 986'
Yes your timing needs to be retarded, 28ş is a good start. The easiest way is to just get a OEM 1200 Ignition and time it from there. Or you can spend a bit more and get a 1200 programmable ignition. 
I hope you also jetted the carb.
I hope you also jetted the carb.
@kman harley,,yes I rejeted the carb. to a 48/180,,,an I got the cams from powersports and the 1200 conversion kit from KCint.com. ,,,
@xFreeBirdx,,,thanks for the info there,,,can I get that timing out of the stock ingn. or is best to get it out of an 1200 one,,,,,also is it going to hurt anything to ride it some ,,, as like breaking it in where I have it now,,,I don't hear any spark knock,,but then again it's hard to hear with all the exh. noise... i know alot of timing is bad for a new engine in cars/trucks,,i would think it would go for motorcycles too,,thats why I'm asking....I know this is a commond up grade for ones that have 883's,and you guys get tired of answering the same questions all the time,,but I'm really gracefull here for the help,,,THANKS ,,,,,
@xFreeBirdx,,,thanks for the info there,,,can I get that timing out of the stock ingn. or is best to get it out of an 1200 one,,,,,also is it going to hurt anything to ride it some ,,, as like breaking it in where I have it now,,,I don't hear any spark knock,,but then again it's hard to hear with all the exh. noise... i know alot of timing is bad for a new engine in cars/trucks,,i would think it would go for motorcycles too,,thats why I'm asking....I know this is a commond up grade for ones that have 883's,and you guys get tired of answering the same questions all the time,,but I'm really gracefull here for the help,,,THANKS ,,,,,
Ultimate HDF Member
Joined: Mar 2008
Posts: 7,604
Likes: 38
From: Landrum, SC , elevation 986'
yes you can get it timed out of a stock ignition. Its just a little trickier, you also may have to adjust the VOEs. The 1200 ignition makes it a lot easier. Most people can just plug and play with one.
I would not ride it without getting the timing right or at least close. You can end up doing serious damage by not doing it. Your not hearing the pinging or predetonation as well cause the motor is so tight with the new build.
I would not ride it without getting the timing right or at least close. You can end up doing serious damage by not doing it. Your not hearing the pinging or predetonation as well cause the motor is so tight with the new build.
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