92 GSXR 1127 engine into 750F Katana, [sick]
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Very Sweet Organization: STT, Sportbike Track Time
My home track is Gingerman Raceway. A better track is Grattan Raceway.
If you're in Minnesota, maybe you wanna sign up for Road America >June 29 & 30!!!!!
Me, Road America = Legendary!!!! -
What are the dates on the track day. What organization? That is a sweet trackLeave a comment:
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Guest repliedJust got through reading your thread. Cool project Bill.Leave a comment:
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Next trackday, can't make up my mind, but this month. Wanna be sure of the bike, but no problems so far.
Also like to ride trackday at Road America last week before the July 4th weekend.
Why it's idling high? Wish I knew, I'm just an amateur engine tech.Leave a comment:
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So when's the next trackday and where?
I didn't read all the posts, is there some reason it's idling so high?Leave a comment:
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Bike is on the road!
Ok, long wait but I got the bike running and on the road, did 50 miles today.
Idle is still high at 2300 RPM, and that may be a cam and valve issue I don't wanna deal with during track season. This will work very well for a trackday bike.
I think I got a medium cool bike?

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True, but seems I'm the 1st to do any reinforcing over that mod to a Kat swingarm. I was told by the guy who does many of these, that it don't need more bracing.
I have plates welded across the undersides where the separation stress will be, and I have triangle bracing above.
The cuts and welds are only on 3 sides of the square tubing.
A lot of people are concerned anybody should ride a motorcycle.
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Bill, that swingarm mod would have me concern. I'd be welding on some big a$$ reinforcement plates over those weld joints. If one of those welds breaks you hit the ground.Leave a comment:
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Ok. Bike looks like a sleeper. May even I'll finish my 750 and us Michigan riders can meet up.Leave a comment:
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Not a direct installation, the K frame needs extensive mods to make it work. Old timers on katriders.com say it's not worth the hassle.Leave a comment:
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At the risk of sounding crass, why didn't you install a gsxr swing arm on the bike. Seems like it would have been a more direct installation.Leave a comment:
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Swingarm widening mod, completed
OK, here's some pics, the swingarm project is completed, successful!
Thanks Kreylyn at katriders.com!
Clearance with Michelin Power Pilot 180/55, it's actually only 178mm wide.
I did not have to bend or reshape the brake arm or bracket, just moved it to the right and spaced with 3 washers and new bolt.
The new chain only has 116 links, 118 is standard, but the mod shortened the swingarm, so 118 was too long.


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welded on the bracing
This is old school bracing, I think they were doing this back in the 60s. I was copying the SRAD swingarm.
Anyway, it's solid and only added about 20oz of steel. And it's kinked outward on the chain side for clearance, will have to test it. The chain might wack it when lose.

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