81 gs 1100e street/strip build start

[Gsxr7]

Hi guys , so glad i found this site.I need help with a 81 gs1100e street/strip build.last two bikes were 07 gsxr 750 and 07 gsxr 600 , both were very simple to add power and performance.iv been reading lots on this gs1100 and want to be able to pull newer 600s.so far only pods and jetted. Im looking for a 4-1 exhaust leaning toward yoshi , thinking of going -1 in front spocket and +2 rear.im reading up on 88/89 gsxr 750 head swap .any knowledge really appreciated.what are best mods i can do ? I really enjoy the shop time working on bikes. Id be really happy to have a streetable 10 sec toy... thanks guys

 

[Rob S.]

Id be really happy to have a streetable 10 sec toy... thanks guys

You're not that far - I think yours ET'd at 11.1 when new. Two years later, in '83' the model with the fairing (ESD?) was Cycle World's first bike to break into the tens with a 10.99.

 

[gs11ezrydr]

Some 1150 drop in cams might wake it up a little.If you hot rod it much with that small end crank and webs unwelded, I've seen them break and or twist the LH crank end.Twist them out of index etc..High volume oil pump gears help,H.D. clutch basket H.D.clutch nut ...Head work is about 70% increase depending.Those 600's are quick. I would recommend a rev limiter. Might save the whole show.Try not to decell under a load.Pull the clutch and chop the throttle.Save that crank end..Good luck.We out ran several current 750"s at the shop with a slightly modified 1150 Pulls like a tractor lol.Peace

 

[trippivot]

what progress have you made? curious to see how it is coming along.

 

[Ronin1166]

@ Gsxr7, PM sent.

 

[81gs7501166]

My son had a gsxr600, I could just barley stay ahead of him to bout 100mph.
I have the small chain conversion, up 1 tooth on rear. Pods, header,filter charger jet kits,g3 cams, 1166 kit. I limit my rpm to 9k. It has lots of bottom. Mine weighs 499lbs with 1/2 tank fuel. Good luck.