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Installing a 90's Katana head on a GS1100

on my turbo street bike i used a dyna 2000 . it has a retard built in . i wired it to retard when starting and then retards at 4lbs boost
 
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Yeap, pull the seat and you can see it.

r3.jpg
 
This is a much nicer setup IMO. I like how you moved the MSD to the side. I take it that the tank sits under the seat? Your track may not care, but its good safety to keep it in the frame rails anyway.

It was not that long ago and there was no retard. If you decide to go with retard, good luck. The cost was one thing, then try and find room for it.

Not so strange that the fixed advancers are normally marked at 28 and 34.

It's amazing what you can do with a few feet of fuel hose and some self tapping screws.

I've had all my msd stuff for so long I bet it cost twice as much now days to buy it.
 
Looks good. You have more room than I figured you would. Battery must be slung in the belly?

Are you just going to fill it off your car tank?

When you start using the nitrous, you want to make it very easy to change the tank out. I know how you like to hot lap that bike.

You may want to stick something between the tank and the engine to try and block some of the heat if it becomes a problem.

Did you make sure your NOS tank number was outside the recall? Why do we have to outsource to Mexico anyways???
 
I made it out to the track tonight and only had a few issues to take care of.

After the first easy launch, no slick or wheelie bars bike ran good up until the return road. Started missing like it was out of fuel after a few more bad runs I pulled the plugs and 3 out of the 4 had no gap. Seems like those dome pistons and small chamber head was adjusting my sparkplug gap on each run. I'm using a .020 base gasket and was hoping that would solve it but no. So I cut off some of the ground lead until the plug would fire to the side of the plug instead of just down. A OK now.

Also had one of the valve cover bolts come loose and boy did the oil started to flow on top of the cover.

Never did any full throttle runs or even used the air shifter, but the engine sounded mean, turn the throttle spin the tire, best tonight was 7.71 at 94 mph. The bike never wheelie, it just spin the tire so I'll be trying a soft shinko next.

Bike has alot more in it, I like the results so far.

Also this head can go up to 12.5K redline don't now it the GS bottom end would like that so I was trying to shift at 9.8K. Didn't even want to try the nitrous.
 
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Congrats on the good first result. Can't wait to hear how it runs once you get the NOS in the equation too. :twisted:
 
I can't wait either for the nos

Pulled the valve cover off and did my one time inspection of the valves keepers, cam sprocket bolts and cam caps. Looked good and re-torque everything, even the head nuts too.

I'm going to check on some race plugs next.

Whats funny is now I'm foot shifting so that means I got to pull my feet up on the pegs now as before I just used the back ones.

Boy did the price of race fuel go up??
 
Are you using rearsets or the stock pegs? Were your toes touching the ground or something?
 
When I bolt my wheelie bars on I also have some pegs there too. So when I push the bike forward doing staging and when I launch they just seem to find the rear pegs with out much action from me and I hit the air shifter button.

But now with no wheelie bar, no rear pegs and no air shifter I got to bring them forward. It's just a mental thing I got to get use too again.

Box and bars make racing alot easier, all you got to do is train your left thumb to do all the work.
 
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Only a 7.71 at 94 mph, my 170 tire was so hard it felt like I was driving on ice. I hear those shinko 003's are real soft and at $119 I may just get one.

I was thinking today of just putting the slick back on the rim. I'm also thinking of removing the lockup for awhile to get alittle more feedback from the clutch.

I did install a 2nd crush washer on all the plugs today so hopefully that issue is fix.
 
There must be a story there because my stock 1100 runs 7.20s - 7.40s. That's with the hard Battle Axe tires. I run about 15 PSI in them at the track and it's hit and miss if it will hook up. You must be spinning like a 70s fueler bike.

Still, not bad for the first run of the year with all the changes you made.
 
Just missed a gsxr head on ebay. Not saying I want to run one just thought I would get one to tinker with.
 
Thanks Mark

I know what you mean Ryan and when I found my Katana head for a buy it now price of 49 bucks and it had the manifold boots still on it I counldn't pass it up. I think just buying new boots is like 100 bucks.

GS cam sprockets, GSXR 1100 front cam guide, two 28mm freeze plugs, a couple of o-rings to seal up some studs and tube of RTV and your 90% done

Today I'm going to put the slick back on and get ready for Friday's action
 
Just got done putting the the slick back on the rim. Removing the 170 is a real pain but the slick goes on like butter. I guess I'll try 20 or 25 psi since I'm not going to run bars.

If things workout this Friday might even try the nos once or twice.
 
Looking forward to some improved numbers. Keep that front tire down!!
 
Got 10 runs in tonight and I was still spinning the slick at the top end. I don't think it's the lockup clutch cause it spins and start bucking like riding a big texas longhorn.

I started at 20 psi and spin on launch, then 10 psi spin again then back down to 8 psi and the front end finally started to come off the ground. Now my best run was with the 20 psi and it was 7.55 at 99.93mph, my 60ft was a big 1.98 and I was foot shifting the bike. With a mph like that I should be in the high 6's and low 7's

The engine sounds like a 2 stroke on the pipe at the topend, I was shifting at 9.8K but this head can go up to 12.5.... don't think the GS bottom end would like that. I back off the gas let the bike hook back up get back on the gas and it does the same thing. I can't be making that much more power than when it was a 1395 motor???

On my last run I just baby it out making sure I didn' spin the rear tire and it was a 7.85 at 98.81mph. Maybe it's time for a new slick. Even with the slick last year and bars it didn't spin or buck like it's doing now and whats strange is I'm not running bars.

I did installed the oem springs back in the clutch about half way into all my runs tonight to get more feel. I'm almost temped to put the 630 gears and chain back on to see it it does the same thing. Right now I'm using a 530 chain 14 front and 42 rear with a 7 inch slick

They did prep the track tonight cause we got the pro mods in town, a jet car and the 10.5 guys tearing up the track so I'm just alittle puzzle on my results.

I can't imagine if I advance the cam timing back up to normal and installed some hotter cams, heck I'm even running 38cv carbs and not the lectron's yet and don't even ask about the nos.

It's going to take alittle more time to figure this combo out
 
Yep, I know what you mean about the bucking. Mine feels more like a horse, but no more cold day testing has solved it.

Sounds like you have your work cut out for you, but at least your starting to make some passes with it again! MPH looks pretty good for spinning.

The kids little bike uses a 7" tire and has short times around 1.26. Have seen it dip as low as 1.23. Has bars. So don't give up hope. The 7" tire can work!

It's time to head to the shower and then off to the track...
 
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