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Saving a 1980 750 twin. 05 Jul 2016 09:02 #733963

  • 531blackbanshee
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do you think one of these
www.harborfreight.com/tubing-roller-99736.html
could pull it off ?

the studs and nuts will be just fine and look great also.

leon
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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Saving a 1980 750 twin. 05 Jul 2016 09:21 #733965

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Looks good. My friend Jeff has a bender he has to use different attachments with, The system cost a small fortune. :whistle:
Steve
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Saving a 1980 750 twin. 05 Jul 2016 10:37 #733974

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my buddy has a tube roller like that. might give it a shot.

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Saving a 1980 750 twin. 17 Jul 2016 21:14 #735292

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I ordered some bends from Cone Engineering and was kinda disappointed in the quality. Not much better than my crushed sand bent radius. and they had creases on the outside of the bend. The first bend of the header is very visible so I bought some bends from Colombia Mandrel and the quality was much nicer.

My buddy Eric thought 2" would be too big for the collector so I dropped that down to 1.875". This meant there were no cheap collectors to be bought so i had a go at making my own.

I hammered open the ends of the primaries and then faced them on the disk sander before welding them together to try and keep stress out of the welds. It still took a good amount of bashing after to get it to fit up.I also ovaled the big tube slightly to help out the transition. I was super shaky welding this up for some reason so the welds arent my best, I probably should have done some practice beads first to get in the groove but you will never see these welds when the pipe is on the bike, so whatever. I also compressed the fork to make sure there would be plenty of clearance. next up is sand bending the second bends.









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Saving a 1980 750 twin. 18 Jul 2016 13:23 #735347

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nice work !

leon
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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Saving a 1980 750 twin. 18 Jul 2016 19:19 #735390

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Thanks Leon

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Saving a 1980 750 twin. 29 Jul 2016 00:20 #736562

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The 2.5" radius just looked a tad small so I got this 4" radius (from Burn's Stainless, best quality so far) for the first bend and I think it looks much better; and in theory it should flow better. I got my two bends done for the second part of the header. It was 92 degrees in the shop and after letting loose with the big torch the temp climbed to 105. I was listening to my sweat drip off and sizzle on the pipe, don't want to do that again. Thankfully sand bending is over at this point. Need to fit them up and weld it all together. Eric also picked up a powder coater he was keen to try out so we re-powdered the top triple.












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Saving a 1980 750 twin. 29 Jul 2016 05:47 #736575

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really nicely fit to the frame there sir.

those flanges are pretty freaking awesome as well ! :evil: headlight ears,swingarm :whistle:

dude it has been pretty awesome to watch your skill progression on here through these bike builds

you've come a long way from the guy that joined looking for someone to help him build an engine.

keep up the good work man.

leon
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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Saving a 1980 750 twin. 29 Jul 2016 06:32 #736579

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Same here Vic! Nice work! Nothing like "1 off" hand made parts. You've become quite the machinist & fabricator.
Like Leon said, I have watched your build from the beginning.
Keep it going! Invest some $$!! An old Bridgeport Mill, a nice lathe, new Miller welder!
You'll be your own boss someday making motorcycle parts for people all over the World!
Livin in "CheektaVegas, NY
Went thru 25 of these in 40 yrs.
I SOLD OUT! THE KAW BARN IS EMPTY.
More room for The Old Girl, Harley 75 FLH Electra Glide,
Old faithful! Points ign. Bendix Orig. carb.
Starts everytime!

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Last edit: by z1kzonly. Reason: more text

Saving a 1980 750 twin. 29 Jul 2016 10:10 #736606

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thanks for the kind words guys!

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Saving a 1980 750 twin. 16 Aug 2016 00:22 #738831

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I haven't been able to get any work on the project bikes because I have been rebuilding a 78 kz650 with a friend. thought it was gonna be a quick tuneup to get it on the road and it ended up needing damn near everything. We tore it down to the frame and rebuilt the top end of the motor and pretty much rebuilt or replaced everything else. Now that is done i'm hitting the road for a couple weeks on my Falco and when I get back I am going to have a "fabrication vacation" and stay at Eric's shop (50 miles away) for three days while we jam on the kz750 and the kz1000 project to get as much done as possible before I head back south to California for the year. I hope to finish the header for the 750 and bunch of small stuff for the 1000.



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Saving a 1980 750 twin. 06 Sep 2016 11:57 #741290

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Whelp, I finally pulled my finger out and finished the header. It came together pretty nice, but I did have to fudge the fitup a little bit where the second bend meets the straight. You can't see it when its on the bike and I doubt it will affect flow very much. Eric made this sweet tool for putting a uniform finish on headers and it worked great, started with 80 grit and then a polishing belt for a uniform brushed finish before welding it all together. My welds came out OK, still a bit too hot, I'm undecided if I want to polish the heat marks off or not. I also need to start thinking about what I want to do about the muffler, thinking about a kerker-esque stainless can for that vintage performance vibe.









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