I was looking for 1200 specs the other day and came across this. I don't recall hearing they were different before. Can anyone confirm this??
From gl1200 gold wings.com
admin Wrote:Use a degree wheel to dial it in. I left mine stock.
Spend an afternoon on a chassis dyno and check the fuel/air mixture under full throttle and jet accordingly then go looking for your brother and his big bore Harley.
Vic if you milled your heads and put it back on the stock mark you automatically retarded your cams I wonder what your centerlines are now?? That may explain pulling all the way to 8k! BTW: do these things have rev limiters?? I've never hit mine.....
As far as specs go according to the honda manual I just got from Dave specs are as follows: 84 & 85, overlap: 20 deg, duration: 230 and centerline is 105. The 86 & 87 are: overlap 10 deg, duration 225 and centerline is 107.5. It looks like the intake and exhaust profiles are all the same except for late 1000's and 1100's which are spread apart. Also the 1000 has 38mm intakes vs 36mm for our 1200's so as long as the seat will take a 2mm grind job it looks like that'll work. I don't know yet what the base circles and rocker ratios are but when I get it apart and do some measuring I will know those. But the 84 & 85 have .010" more cam lobe lift this doesn't seem like much but with more duration and overlap every little bit helps!! I like the 107 centerline of the later cams and depending upon how that is done I may have some options (ie: did they use different pulleys or is it ground into the profile??) Anyway sorry to ramble on so long with all the boring stuff but I think I have a game plan now. Bounce this back if something doesn't make sense sometimes I get ahead of myself.......
From gl1200 gold wings.com
admin Wrote:Use a degree wheel to dial it in. I left mine stock.
Spend an afternoon on a chassis dyno and check the fuel/air mixture under full throttle and jet accordingly then go looking for your brother and his big bore Harley.
Vic if you milled your heads and put it back on the stock mark you automatically retarded your cams I wonder what your centerlines are now?? That may explain pulling all the way to 8k! BTW: do these things have rev limiters?? I've never hit mine.....
As far as specs go according to the honda manual I just got from Dave specs are as follows: 84 & 85, overlap: 20 deg, duration: 230 and centerline is 105. The 86 & 87 are: overlap 10 deg, duration 225 and centerline is 107.5. It looks like the intake and exhaust profiles are all the same except for late 1000's and 1100's which are spread apart. Also the 1000 has 38mm intakes vs 36mm for our 1200's so as long as the seat will take a 2mm grind job it looks like that'll work. I don't know yet what the base circles and rocker ratios are but when I get it apart and do some measuring I will know those. But the 84 & 85 have .010" more cam lobe lift this doesn't seem like much but with more duration and overlap every little bit helps!! I like the 107 centerline of the later cams and depending upon how that is done I may have some options (ie: did they use different pulleys or is it ground into the profile??) Anyway sorry to ramble on so long with all the boring stuff but I think I have a game plan now. Bounce this back if something doesn't make sense sometimes I get ahead of myself.......