Steve Saunders Goldwing Forums - View Single Post - 1987 Gl1200 engine into 1982 gl1100 frame

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post #18 of (permalink) Old 01-12-2019, 02:23 PM
Average Goldwing Rider
JamesPal's Avatar
Join Date: Oct 2009
Location: Bellevue, Washington, USA
Year: 1972, 1981, 1985
Make: CB450, GL1100, GL1200I
Model: K5, Standard, Interstate
Posts: 997
Originally Posted by Ekvh1 View Post
Jamespal, you may be thinking there are lots of 11/12 swaps at NGW, but I can only think of two. One never came back with a ride report. Donít know what happened to him. There are lots of 1000/1200 swaps. To my recollection reading over there I am the only one who wrote liking to take off in second gear and that was with the 3.40 final drive of the 1000 and with my wife on back. The gear ratios between the bikes are actually quite close. First gear in the 85-87 1200 is 2.571:1 while the 82 was 2.5:1ó pretty close. 2-3-4 are exactly the same in the 82-87 bikes. The 1200 fifth gear is 0.800:1 vs the 82ís 0.829. There is a difference in the secondary gears in the 83-84 models which might account for something, but it brings the ratios the other direction taller geared. To counter this the 83-84 models had a 2.642 first gear.

If you strip the bike down a bit, a 2.83:1 final drive is all I think want. I have an 83 swingarm and final drive in the shed. I would love to fit it on for comparison purposes. I think it might be better for bombing around the city.
You are probably right, I was thinking of the the 12/10 conversions. Your NGW post stuck in my mind. My 1100 is the standard model and it only had a SEANG plexiglass fairing and the Hondaline removable trunk, so it wasn't much heavier than a stock standard. The charm of the 1100 is the 'on top of the bike feel, (like the CB series) responsive engine with low gearing and a tightly spaced gear box. My 1200 Interstate is a much different bike. You feel like the bike wraps around you and you are sitting down into it. The engine is torquy and doesn't wind out anything like the 1100. Gears are widely spaced but the engine drops down into a nice lazy RPM on the freeway. The 1100 can be pushed a lot harder through the twisties and during acceleration up shifting drops you right into the middle of the power curve.

Jim Palmer
Current rides:
\'85 GL1200I Garage Find
\'81 GL1100 Std
\'72 CB450K5
My \'81 Restoration:
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