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1287 Superbike ? lol

24632 Views 172 Replies 13 Participants Last post by  Duck00
5
I like many of you good folks here, love road racing. The two tracks I have frequented are
Gratton Raceway and Gingerman. The ZX12R is of course not a zx6 but so what.
A 12 is a lot of fun. And since I have spare parts, I’m going to put together a dedicated track bike.

I picked up a salvage frame awhile ago. Beat up pretty good. Cracked in the middle.
So I had it stripped. I asked the guy not to sand blast it. He said no problem. He’d use something not so abrasive. But of course, he sandblasted it. Aggravating.
Auto part Automotive exterior


Bob at Daredevil Fab started by fixing the crack and welding up a mess for the battery cover boss. I shaped it and drill/tap the new hole.
Grey Pattern Silver Textile Asphalt
Footwear Leg Tire Automotive wheel system Automotive tire


No project would be complete unless you get a box from ScottDavisRacing! Lol

Cardboard Box Flooring


cmg
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Looks good - are the aluminum motor mounts from a ZX14/14R?
Looks good - are the aluminum motor mounts from a ZX14/14R?
they are from the 14. Expensive new, so I have been keeping an eye out for them used. NorthernKaw had a few extras, so that was great.

cmg
Not the same diameter as our bikes, but have you seen these?
very nice. Same principle as tapping and using a hex plug in the cam cover. I have the size written down somewhere....

cmg
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20 minute short track fuel tank. Factory fuel pump and injectors should be plenty for the 1287. Nice and clean.
Machine Armour Antique Automotive engine part Brass

Space Toy Machine Aerospace engineering Steel
Personal protective equipment Motorcycle accessories Helmet Motorcycle Carbon
Personal protective equipment Fictional character Armour Toy Action figure


cmg
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That bike is going to be an animal 😎
/Tom
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Hey Henry, why such a loose PTH?
At 030thou my 1427 pistons were ever so slightly hitting the cylinder head. Also my method is flawed. Even though I had the block sinched down and I had the piston rock in the bore taken up, I think once the head is torqued down properly, the PTH will close up slightly.
When the piston shines itself on the head, it can cause the wrist pin to hit the pin bore of the piston and gall. I think when the engine is cold it will have more piston rock than when the piston has expanded from heat. So tight PTH requires patience and skill...two things I don’t have...lol

cmg
At 030thou my 1427 pistons were ever so slightly hitting the cylinder head. Also my method is flawed. Even though I had the block sinched down and I had the piston rock in the bore taken up, I think once the head is torqued down properly, the PTH will close up slightly.
When the piston shines itself on the head, it can cause the wrist pin to hit the pin bore of the piston and gall. I think when the engine is cold it will have more piston rock than when the piston has expanded from heat. So tight PTH requires patience and skill...two things I don’t have...lol

cmg
I think you're onto something!
I think you're onto something!
Also, my carpenter head has been milled a ton. So if I lose some CR with PTH I pick it up with smaller combustion chambers.
I have seen Scott make 212hp on a pump gas
1227 11:1 engine.

cmg
Really interesting to see this project come together!!
(y) (y)
2
Deleted the ignition switch, the headlight wiring and the left hand switch assembly and wiring.
Pulled the wiring for the dash indicator lights and fuel level too.
Motorcycle accessories Toy Carbon Automotive engine part Motorcycle
Groupset Bicycle frame Bicycle chain


flipped the red on/off and hit the starter and everything still working...lol
Need to delete a few things at the rear of the harness next.

cmg
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Cleaned up what won’t be used in the tail. Ecu lays nice in the zx10 battery box so that was easy.
moving the rectifier. Have some fiberglass sheet that I cut a piece for a sturdy light mount. The fairing mount has that extra tang for the oem overflow. So the mount hole at the front bolts down to the fairing bracket and the fiberglass easily supports the rear of the rectifier.

Electrical wiring Wire Electrical supply Cable

Motorcycle accessories Metal Auto part Steel Automotive engine part
Motor vehicle Motorcycle Automotive design Engine Automotive tire


Cmg
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You probably saved 5 pounds in wiring & tape alone... Harness looks tidy!!
😁 😁
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This is the best thread on the whole board!
This is the best thread on the whole board!
Don, ! If I make it to Phillips Island I’m going to have to chase you on that monster H2 !!!!

cmg
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Deutsch connectors are really nice. Makes easy work of wires.
Motorcycle accessories Buoyancy compensator Wire Diving equipment
Machine Suspension Suspension part Engine Automotive engine part
Engine Automotive fuel system Motorcycle accessories Pipe Automotive engine part


The wiring for the stator and rectifier is odd. When you strip off the tape, four 12gage wires butt into two 14gage wires. Seems weird looking at it.
I didn’t change anything, just shortened everything up. I wonder why it’s configured this way.

cmg
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