Engine differences: 1980 - 1983 GS1100E

[TheCafeKid]

hey josh i just picked up an 82 1100 is the hp the same as you were stating before 110? or what is it? i know the carbs are bigger but what am i looking at for hp? torque?

The 1100 motor you have is a 8v shaft drive motor. The numbers above are for the 16v chain drive motors only.

[headsbikesmopars]

Josh..yes..it is late..sorry buddy.

[quexpress]

Its not the SAME crank, no, but it IS a roller bearing crank, like the 8v 1100 (and 550, 77-79 750, 850, and 1000.....) Durable, tough, heavy (which help with the grunt) bulletproof, so long as you dont overpower it. The drag guys will tell ya too. Yes, it would be nice to have a welded crank for piece of mind..but if you're just riding it as it was meant to be ridden to begin with, which is pretty aggressive for MOST people, then you'll have no problem.

OK thanks!

[quexpress]

There was an airbox change with the '82 model.

What kind of airbox changes? Anything related to performance?

If you have an '80 model just have a good radius valve job performed and you are very good to go. You can't really go wrong with any model year. JMHO.
Terry

I don't know what is meant by a "radius valve job". Any insight would be appreciated!

Thanks!

[TheCafeKid]

What kind of airbox changes? Anything related to performance?

I don't know what is meant by a "radius valve job". Any insight would be appreciated!

Thanks!

The change was actually in the 83 model...they went from two round intake holes in the "snorkel" to an eliptical single hole... made for better, smoother, larger flow...

[TheCafeKid]

Honestly tho man, you are not gonna notice the difference. They are all fine machines, with pleanty of HP for an every day joe rider. If you were Johnny Racer, then maybe you could get more involved in power, but 10HP isnt a big gain either way..

[quexpress]

Honestly tho man, you are not gonna notice the difference. They are all fine machines, with pleanty of HP for an every day joe rider. If you were Johnny Racer, then maybe you could get more involved in power, but 10HP isnt a big gain either way..

I agree with you 100%, and the engine will most probably left stock. However these hp differences intrigued me and curiosity got the best of me. I had to know LOL!
Thank you!

[headsbikesmopars]

Honestly tho man, you are not gonna notice the difference. They are all fine machines, with pleanty of HP for an every day joe rider. If you were Johnny Racer, then maybe you could get more involved in power, but 10HP isnt a big gain either way..

What he said...

Also,.. a radius valve job has only one angle and that is the 45 degree seat the valve seats (sits) on. Instead of having a top cut (angle) and botton cut (angle) above and below the actual seat, a radius cutter leaves a very nice, smooth radius cut above the 45 seat, flowing into the chamber and below the 45 seat, flowing into the bowl, and does this in one operation. Air does NOT like corners. A radius valve job will improve air flow over and around the valve at low and mid lifts. Mostly below the .250 lift range. The stock cams are in the .276 - .296 lift range anyway. A good valve job and back cutting the valves 37 degrees and you will have a good piece indeed. Many a GS 1100/1150 has run deep into the low nines with a stock unported head with good seats and valves. Like Josh said..if your intent is street riding only you don't need a big head. Take the head to a good shop for the best valve job you can find. If you want more..you can have it with a more effecient flowing head. A whole bunch more !

Terry

[quexpress]

Like Josh said..if your intent is street riding only you don't need a big head. Take the head to a good shop for the best valve job you can find. If you want more..you can have it with a more effecient flowing head. A whole bunch more !
Terry

It will be a street ride ... nothing else. However, when possible, I thrive to keep myself informed and know about the possible options.
Thanks Terry!
Normand