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The Big Block GPz1400 Fuel Injected Monstrosity
- Kray-Z
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14 Jul 2016 10:19 #734937
by Kray-Z
Hard to believe this engine was in a bike that hit the guard rail going 125 mph at our local race track last year - huh?
2-04 R1, 81 CSR1000, 81 LTD1000, 2-83 GPz1100, 3-79CBX, 81 CBX, 3-XS650, 84 Venture, +parts
Quote "speed costs money...how fast do you want to go?" (Which Z movie?)
Universal formula for how many motorcycles one should own = n + 1, where n is how many motorcycles you own right now....
Replied by Kray-Z on topic The Big Block GPz1400 Fuel Injected Monstrosity
jberger635 wrote: dry fitted engine just for looks and mocking up some parts. heres what she looks like.
Engine is currently being put together and bottom end is already complete. Head and jugs will be on later in the week.
Hard to believe this engine was in a bike that hit the guard rail going 125 mph at our local race track last year - huh?
2-04 R1, 81 CSR1000, 81 LTD1000, 2-83 GPz1100, 3-79CBX, 81 CBX, 3-XS650, 84 Venture, +parts
Quote "speed costs money...how fast do you want to go?" (Which Z movie?)
Universal formula for how many motorcycles one should own = n + 1, where n is how many motorcycles you own right now....
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14 Jul 2016 11:00 #734943
by Kray-Z
2-04 R1, 81 CSR1000, 81 LTD1000, 2-83 GPz1100, 3-79CBX, 81 CBX, 3-XS650, 84 Venture, +parts
Quote "speed costs money...how fast do you want to go?" (Which Z movie?)
Universal formula for how many motorcycles one should own = n + 1, where n is how many motorcycles you own right now....
Replied by Kray-Z on topic The Big Block GPz1400 Fuel Injected Monstrosity
No eBay APP ID and/or Cert ID defined in Kunena configuration
I've put dual plug in my own 1395 KZ-J, project, but haven't tried it out yet (I've got 11 project bikes of my own on the go at the moment, and not enough free time for half that many - multiple motorcycle disorder, as my insurance lady calls it...). I was hoping to reduce maximum ignition advance to 30 -32 degrees with dual plugs, thereby reducing heat and increasing power and efficiency. That is the theory, and maybe wishful thinking, anyway...
What net reduction in ignition advance did you end up with?
The Zephyr 1100 engine is not based on the classic Z1 / KZ / GPz series - it was derived from the 8 valve, plain bearing crankshaft 1200 cc liquid cooled Voyager II touring bike engine of the late 80's. Fantastic engine it is, but not much of anything is interchangeable with the big KZ's. I think at one time Kawasaki was planning to use it as a factory backed replacement for the aging KZ in Pro-Stock drag racing, but that never happened.
Jberger had insulation wrapped headers when he first bought his GPz1100, if I'm not mistaken...and the theory is sound. I myself refuse to put the tape on a bike, though...pain in the ass to keep clean.
Hey Tyrell,Tyrell Corp wrote: I am also running dual plug and will cut back the ignition advance to avoid heat and detonation.
Interesting, the zephyr ZR1100 had a dual plug head too. Can these be fitted to a gpz11? ( The ZR550 block and head also had larger fins, even though a lot less than GPz550 power)
Something I really don't like to see on bikes is wrapped headers, it is supposed to reduce underbonnet temperatures in cars and it is claimed that keeping the headers really hot is good for performance. Whether it works on a bike I don't know but you might be shifting a bit more heat from the front of the head to the back and out of the exhaust if you can tolerate the look of wrapped headers.
Good thread, keep it coming
I've put dual plug in my own 1395 KZ-J, project, but haven't tried it out yet (I've got 11 project bikes of my own on the go at the moment, and not enough free time for half that many - multiple motorcycle disorder, as my insurance lady calls it...). I was hoping to reduce maximum ignition advance to 30 -32 degrees with dual plugs, thereby reducing heat and increasing power and efficiency. That is the theory, and maybe wishful thinking, anyway...
What net reduction in ignition advance did you end up with?
The Zephyr 1100 engine is not based on the classic Z1 / KZ / GPz series - it was derived from the 8 valve, plain bearing crankshaft 1200 cc liquid cooled Voyager II touring bike engine of the late 80's. Fantastic engine it is, but not much of anything is interchangeable with the big KZ's. I think at one time Kawasaki was planning to use it as a factory backed replacement for the aging KZ in Pro-Stock drag racing, but that never happened.
Jberger had insulation wrapped headers when he first bought his GPz1100, if I'm not mistaken...and the theory is sound. I myself refuse to put the tape on a bike, though...pain in the ass to keep clean.
2-04 R1, 81 CSR1000, 81 LTD1000, 2-83 GPz1100, 3-79CBX, 81 CBX, 3-XS650, 84 Venture, +parts
Quote "speed costs money...how fast do you want to go?" (Which Z movie?)
Universal formula for how many motorcycles one should own = n + 1, where n is how many motorcycles you own right now....
Please Log in or Create an account to join the conversation.
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