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kz550 Big Bore 615cc Yeah or Nay? 27 May 2016 16:33 #728868

  • Kirkpatrick
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UPDATE.

Finally got out on the open road and had it up to 75 on the Freeway and was a tad under 6000 RPMs which is rock solid. Even at 85+ It did not shake or vibrate or anything. What it comes down to is me having to get used to the no baffled pipe and shortness of it where it basically exits right by by my feet which I am not used to. All bikes I have had have had pipes that have extended farther back. Bike road like a champ. Probably just need earplugs while riding. I appreciated everyone's input. I am going to leave the 17T front sprocket in and not mess with the 40T rear. Love the bike for what it is.

Brendan
1983 Kawasaki KZ550
1983 Suzuki GS1100ED
1982 Suzuki SZ1000 (Katana)
1997 Honda CR500

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kz550 Big Bore 615cc Yeah or Nay? 27 May 2016 21:55 #728907

  • azman857
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Nothing wrong haveing a 550 for local runs and a 6/750 for highway runs.....just sayin'.... B)
I don't have a plan and I'm sticken' to it! '77 KZ 650 / 750 GPz custom project in progress

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kz550 Big Bore 615cc Yeah or Nay? 28 May 2016 06:11 #728933

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Just the wind noise from 75 would surprise most I bet ....... my DB meter I use for my home stereo reads over 120 when I stick it out the door of my quiet car.......... is illegal to ride with ear plugs and I don't use a helmet but I've cheated more than a few times and went with a little bit of paper towel.....
1978 KZ650 b-2
700cc Wiseco kit 10 to 1.
1980 KZ750 cam, ape springs, stock clutch/ Barnett springs.
Vance and Hines Header w/ comp baffle and Ape pods, Dyna S and green coils, copper wires.
29MM smooth bores W/ 17.5 pilots, 0-6s and 117.5 main
16/42 gearing X ring chain and alum rear JT sprocket.

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kz550 Big Bore 615cc Yeah or Nay? 28 May 2016 06:16 #728936

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KZB2 650 wrote: ........ I don't use a helmet .....


Bad idea. I bet I'm not the only one on this site whose life was saved by a helmet. Stuff over which you have absolutely zero control can happen really fast. In my case it was a dump truck. Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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kz550 Big Bore 615cc Yeah or Nay? 28 May 2016 06:28 #728940

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I didn't have a helmet in the wreck. That's why I'm so pretty. :lol: Lucky I landed on my face. :woohoo:
Steve

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kz550 Big Bore 615cc Yeah or Nay? 28 May 2016 11:32 #728986

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I always ride with earplugs in. I have had my ears ringing for a couple days after some long days at 80mph, i cant even hear the engine, just the scream of the wind at that speed.
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Last edit: by DoctoRot.

kz550 Big Bore 615cc Yeah or Nay? 28 May 2016 12:12 #728990

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KZB2 650 wrote: It is illegal to ride with ear plugs.....

So is an ubaffled pipe but what the hell. Maybe an earplug in the right ear and an ear bud in the left with Billy Squire, AC DC, and Foreigner.
1983 Kawasaki KZ550
1983 Suzuki GS1100ED
1982 Suzuki SZ1000 (Katana)
1997 Honda CR500

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kz550 Big Bore 615cc Yeah or Nay? 29 Aug 2016 21:28 #740470

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Just installed an 8" baffle from Dennis Kirk and love the gains. Back pressure is nice! The bike still pops between shifts. Is there a way to get rid of that. I am asking because my wrench guy says no but YouTube videos say yes. Throttle Rev to decelerate is pop, pop, pop. My 83 GS1100 with pods and VH pipe never popped like my KZ550. If so, any kit recommendations?
1983 Kawasaki KZ550
1983 Suzuki GS1100ED
1982 Suzuki SZ1000 (Katana)
1997 Honda CR500

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kz550 Big Bore 615cc Yeah or Nay? 30 Aug 2016 07:57 #740502

  • rrsmsw9999
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Could be jetting, an air leak or the anti smog stuff/reed valves if it's still there. Yes it can be eliminated and should be. R
1980 KZ 1000E2
Crashed 6/2016

1980 KZ550A
Sold 3/2016

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kz550 Big Bore 615cc Yeah or Nay? 30 Aug 2016 10:30 #740522

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Lean. Pilots?
jetsrus.com/
Steve

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kz550 Big Bore 615cc Yeah or Nay? 30 Aug 2016 10:44 #740530

  • Tyrell Corp
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A bit of popping on the overun is no big deal in my opinion, tweaking the pilot airscrews will reduce this but not eliminate it.
Performance motors -which these are, do this when tuned.

I really like the sound actually. If it is good enough for Ferrari and Lotus v8 then I can live with it.
1980 Gpz550 D1, 1981 GPz550 D1. 1982 GPz750R1. 1983 z1000R R2. all four aces

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kz550 Big Bore 615cc Yeah or Nay? 30 Aug 2016 15:14 #740570

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It is the shift pop that is irritating. Don't mind the other stuff, just the shift.
1983 Kawasaki KZ550
1983 Suzuki GS1100ED
1982 Suzuki SZ1000 (Katana)
1997 Honda CR500

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