Torque..What's possible?

[posplayr]

Mid range boost:

1166
4:2:1 exhaust
36mm slingshot carbs

[trippivot]

mild drop in cam shafts. web will hard face yours if you send them in.


36 flatslide carbs

[Steve]

Believe it or not, one way to increase mid-range torque is to go back to a stock exhaust (and airbox).

A good 4-into-1 pipe will increase hp in the upper range, but will do it at the expense of mid-range torque.
It won't be a miracle increase, but it will be more than you have now.

The only other way would be like TCK mentioned, degree the cams or change to different cams, then degree them.

.

83 GS1100E. Dyno'd at 92 rwhp and 64 tlbs torque. It has 4 into 1 kerker headers and that is it unless carbs have been tuned to match. Runs real good but it would be nice to have more more midrange tourque. maybe 5,000 to 7,000.

Not a drag bike but more for back roads and twisties. Looking for a little more flat power curve than peaky.

What can be done besides an all out drag type to increase midrange power?

Well I'm still learning about a this stuff, so hopefully someone who can either explain it better or correct any bad or incorrect info I might give from my limited as of yet understanding will help out. But you can move the powerband around a little bit by degreeing the cams, as well as using a slightly hotter cam. Your low end torque suffers a little when you use a high flow pipe (but the top end performance gains are where the pipe excels generaly speaking). Using a higher lift/longer duration cam will increase torque/hp numbers, depending on how large/long you go. But then you can even take that power and decide where it's maximum gain is placed in the rpm band somewhat by using slotted cam sprockets and degreeing in specific relationship to the stroke/crank/piston position if I understand it all rght.
Obviously an 1166 bore kit is another option as well. And I am currently using GS1150 carbs on my 83-1100 and it really helped wake and otherwise stock motor up. I have a set of GS1150 cams to have degreed as well they are slightly hotter than the stock cams. But you may that even getting a set of slotted sprockets and having your stock cams degrees will put some of that low end punch back. Hopefully Ray or Terry or Bill or someone will chime in soon

83 GS1100E. Dyno'd at 92 rwhp and 64 tlbs torque. It has 4 into 1 kerker headers and that is it unless carbs have been tuned to match. Runs real good but it would be nice to have more more midrange tourque. maybe 5,000 to 7,000.

Not a drag bike but more for back roads and twisties. Looking for a little more flat power curve than peaky.

What can be done besides an all out drag type to increase midrange power?