1975 KZ 900 , ZRX Swingarm, 89 GSXR front end

  • mark1122
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06 Apr 2009 05:16 #278827 by mark1122
Replied by mark1122 on topic 1975 KZ 900 , ZRX Swingarm, 89 GSXR front end
tk11b40
Makes me think though, I had an ELR with aftermarket Mikuni 33mm smoothbores, that thing was a pig in traffic, I am wonderring if the rails, and all the heat had something to do with it.

It may just have been the vm33's. they are a little big for a 1000 cc motor even a 1100 will struggle with them. the large throat provides a week vacuum signal at low rpm's, there for they can be finicky if u are too quick opening the throttle while the rpm's are down.
I have a set of them. i run rs34's now. the rs34's feel like the vm33's if i unhook the accelerator pump. They go lean if u whack the throttle down low in the rpm's. Then they take off like a bat out of hell. If u could find a pump for the vm’s they would be awesome.
As for drilling the carb plates, they used to drill the cyl fins to improve cooling ..
I drilled my fins too.

76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.

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08 Apr 2009 19:45 #279732 by tk11b40
Replied by tk11b40 on topic 1975 KZ 900 , ZRX Swingarm, 89 GSXR front end
Carburator quwstion..

What do all the prefix's stand for VM, RS etc?

Suzuki GSXR 750 slabside
Ducati S4R
Husqvarna FE 350s

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09 Apr 2009 03:45 #279832 by mark1122
Replied by mark1122 on topic 1975 KZ 900 , ZRX Swingarm, 89 GSXR front end
RS= radial slide, i think. VM ?

76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.

~ ~ ~_@
~ ~ _- \,
~ (k) / (z)

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10 Apr 2009 19:26 - 10 Apr 2009 19:26 #280474 by Bad Kaw
Replied by Bad Kaw on topic 1975 KZ 900 , ZRX Swingarm, 89 GSXR front end
Very Macho?B)

78 Kawasaki Z1R
81 Kawasaki KZ1000J (mods)
82 Kawasaki ELR Clone (1000 J)
82 Kawasaki KZ750R1/GPz750 ELR-ed
70 Kawasaki KV75
83 Honda CB1100F (few mods)
79 Suzuki GS1000 (rolling frame / project / junk)
84 Suzuki GS1150ES (modified project)
83 Yamaha XJ900R (project / junk)
Last edit: 10 Apr 2009 19:26 by Bad Kaw.

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10 Apr 2009 19:30 #280479 by Bad Kaw
Replied by Bad Kaw on topic 1975 KZ 900 , ZRX Swingarm, 89 GSXR front end
Hey, by the way, "heat shields" are made from much lighter stuff. I'm going by a buddies place tomorrow and I'll try to remember to take my camera and ask him what his shield is made of, but it's nost plate metal. The Yosh ones were made of that white opaque plastic-stuff (durlen?...surlen?...I dunno), anyway, it was pretty 'bendy' (is that a word?) but it had been molded to fit up and over the back of the head and then again down under the carbs.

-KR

78 Kawasaki Z1R
81 Kawasaki KZ1000J (mods)
82 Kawasaki ELR Clone (1000 J)
82 Kawasaki KZ750R1/GPz750 ELR-ed
70 Kawasaki KV75
83 Honda CB1100F (few mods)
79 Suzuki GS1000 (rolling frame / project / junk)
84 Suzuki GS1150ES (modified project)
83 Yamaha XJ900R (project / junk)

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10 Apr 2009 21:29 #280536 by tk11b40
Replied by tk11b40 on topic 1975 KZ 900 , ZRX Swingarm, 89 GSXR front end
Hey bad Kaw I would really appreciate that.

A photo or two would give me an idea!!

Thanks!!

Suzuki GSXR 750 slabside
Ducati S4R
Husqvarna FE 350s

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13 Apr 2009 21:04 #281545 by tk11b40
Replied by tk11b40 on topic 1975 KZ 900 , ZRX Swingarm, 89 GSXR front end
This weekend I put the front end on for the last time, been struggling with how to get a decent steering stop put on the bike. Now it's on. soon a finished product will be born.

We brazed a stop on the neck prior to powder coating, put the front end on and bam, a miscalculation. Lots of trial and error with this stuff. Not like building a Harley, or a small block Chevy engine. Hey you know if you pay extra for shipping most UPS guys can build that Small Block chevy while driving the brown truck!!

So I needed a little bit less lock to lock travel or the forks would be slammin me brand new tank which was EXPENSIVE.

I just started some recreational machining and before long had carved out a urethane part which serves as both a pad and the adapter the bike needed.

So if you are struggling with the same thing, maybe this will give you an idea. I get lots of ideas looking at the work on this forum, so share and share alike!!

Suzuki GSXR 750 slabside
Ducati S4R
Husqvarna FE 350s
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13 Apr 2009 21:07 #281549 by tk11b40
Replied by tk11b40 on topic 1975 KZ 900 , ZRX Swingarm, 89 GSXR front end
One more view...

Suzuki GSXR 750 slabside
Ducati S4R
Husqvarna FE 350s
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14 Apr 2009 04:55 #281606 by PLUMMEN
Replied by PLUMMEN on topic 1975 KZ 900 , ZRX Swingarm, 89 GSXR front end
cool ! B)

Still recovering,some days are better than others.

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14 Apr 2009 08:19 #281642 by 531blackbanshee
Replied by 531blackbanshee on topic 1975 KZ 900 , ZRX Swingarm, 89 GSXR front end
crafty lildude now ain't ya!haha.good job,way to improvise.thanks for sharin.

leon holmes

skiatook,oklahoma 1980 z1r,1978 kz 1000 z1r x 3,
1976 kz 900 x 3
i make what i can,and save the rest!

billybiltit.blogspot.com/

www.kzrider.com/forum/5-chassis/325862-triple-tree-custom-work

kzrider.com/forum/5-chassis/294594-frame-bracing?limitstart=0

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14 Apr 2009 17:41 #281804 by mark1122
Replied by mark1122 on topic 1975 KZ 900 , ZRX Swingarm, 89 GSXR front end
Good thinking. very nice fit and finish.B)
Dumb question, why is 1 side larger?

76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.

~ ~ ~_@
~ ~ _- \,
~ (k) / (z)

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14 Apr 2009 21:50 #281896 by tk11b40
Replied by tk11b40 on topic 1975 KZ 900 , ZRX Swingarm, 89 GSXR front end
Oh Crap...

I knew one of you guys would notice that.

A good friend machined the steering stop for the frame, I marked the left and right with a center punch, so he could braze the new part on the neck. I dunno if it moved while getting brazed, or i marked it wrong, but it ended up a little off center.

Jeeeezze tough crowd:laugh:

Good eye!! Thanks for the compliment.

Suzuki GSXR 750 slabside
Ducati S4R
Husqvarna FE 350s

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