considering exhaust exchange

[Dogma]

I did some searching on which exhaust will fit what, but the information seems a bit scattered. How many factors need to be considered when looking at stock exhaust interchangeability? I know the rear mounting changed about '82. Is there anything else that needs to be considered?

Specifically, I'm looking at '82 1100 G and GL exhausts for my Dad's 82 850 L. I've tried to describe to him the difference in sound for the L models, and we're currently leaning toward the G pipes. Will there be any significant difference in flow using pipes from the bigger bike?

TIA

[twr1776]

Someone might correct me but I think the 750L/850L pipes are the same. I do know for sure that the 81 1000L/83 1100L pipes are the same. I measured my 850 pipe versus the 1100 and the cylinder spacing is different for the larger motor size. The G models used a different frame so I doubt they would fit without modification on an L model.

[80GS750]

i have some old MAC 4-2 turnouts that might fit, they are from a 1000 and they slip onto the stock headers... if your interested shoot me a PM and ill get you some pics

[Dogma]

Someone might correct me but I think the 750L/850L pipes are the same. I do know for sure that the 81 1000L/83 1100L pipes are the same. I measured my 850 pipe versus the 1100 and the cylinder spacing is different for the larger motor size. The G models used a different frame so I doubt they would fit without modification on an L model.

That makes sense that 750/850 would exchange. I know they have the same head. I don't know how it is after '82, but my 850L has 79G exhaust, no mods.

Thanks for the info on the 1100. We'll keep looking.

[bothebrave]

i have some old MAC 4-2 turnouts that might fit, they are from a 1000 and they slip onto the stock headers... if your interested shoot me a PM and ill get you some pics

sent pm may be interested for a 1980 GS1000G.......