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Author Topic: Dr. Jekyll and Mr. Hyde ( a pair of KZ400s)  (Read 50498 times)

Offline Nebr_Rex

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Re: Dr. Jekyll and Mr. Hyde ( a pair of KZ400s)
« Reply #60 on: Jul 05, 2013, 19:58:53 »
Today I modified a bolt from the hardware store and a fitting that came with the
adjustable pressure switch.
As you can see it also has an oil pressure gauge along with the switch that will be
used to control one of the signals for the fuel injection.
All to replace the stock bolt and one wire pressure switch for the idiot light on the dash.
In the bottom pic are the counterweights with the end cut off of one to slow down the
 advance rate.

Offline Nebr_Rex

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Re: Dr. Jekyll and Mr. Hyde ( a pair of KZ400s)
« Reply #61 on: Jul 09, 2013, 23:05:39 »
Got everything assembled  except for installing the tank and pulse width modulator.
As you can see both hei modules and the relay switch.
The relay turns one of the modules on and off.
It it activated by the adjustable pressure switch.
The path of the fuel starts on the left side of the tank at a barrel valve.
From there it goes thru a filter, then to the pump, the fuel rail/throttle bodies,regulator,
and back to the tank on the right side.
If this all works and can be adjusted to make the bike rideable I will permanently mount
The components and clean up the wiring and plumping.

Offline Nebr_Rex

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Re: Dr. Jekyll and Mr. Hyde ( a pair of KZ400s)
« Reply #62 on: Jul 09, 2013, 23:10:32 »
More.

Offline GmanGS450

  • Posts: 66
Re: Dr. Jekyll and Mr. Hyde ( a pair of KZ400s)
« Reply #63 on: Jul 09, 2013, 23:44:16 »
Following, this is a very inspirational build.  ;D
-Built, not Bought-

Offline MakiMoto

  • Posts: 210
Re: Dr. Jekyll and Mr. Hyde ( a pair of KZ400s)
« Reply #64 on: Jul 10, 2013, 07:07:34 »
Dont know how i missed this, subscribed.

Very interesting project

Offline GmanGS450

  • Posts: 66
Re: Dr. Jekyll and Mr. Hyde ( a pair of KZ400s)
« Reply #65 on: Jul 11, 2013, 14:30:42 »
What are your HP estimates? I know you mentioned something about someone on the KZtwins forum hitting a good number, but is your goal to make that? Surpass that? or just get it working?
I don't know if I missed it but what kind of fuel are you planning on running, basic pump gas 87/89 or a high octane E-85/105 race gas?

Just wondering. Thanks.
-Built, not Bought-

Offline Nebr_Rex

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Re: Dr. Jekyll and Mr. Hyde ( a pair of KZ400s)
« Reply #66 on: Jul 11, 2013, 20:45:06 »
Dr. Jekyll is stock except for a milled head with litely smoothed out ports..
Stock h.p. is 40 at the crank, I might regrind the cam to get 40 h.p. at the wheel.
The fuel injection is an exercise to see if it can be done, which I think is very doable.
I've also been thinking of a mechanical system,  constant flow with an electric fuel pump.
Mr. Hyde will get all the goodies to reach my goal of 60 h.p.,
high comp., polished this and that, balanced, back cut, etc....
It will run on e-85 or race gas,probably e-85 because race gas is $9 a gallon.
And let's not forget about the 440ltd ( I picked up another one this last weekend for parts ).
I'll call it Frankenstein's Monster, a drag bike with a raked front end, extended swing arm,
3.5 in. rear wheel, 10/1 comp. and 15 psi of turbo boost on e-85.

.


Offline Nebr_Rex

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Re: Dr. Jekyll and Mr. Hyde ( a pair of KZ400s)
« Reply #67 on: Aug 08, 2013, 01:25:19 »
Quick update, Dr. Jekyll started and ran on it's own, but....
 Burned up one of the ign modules and still getting a little to much fuel.
My home made throttle bodies are causing a problem as the fuel is having to go around the butterfly.
On the CV carb fuel is mostly going directly under it.
So I am switching to a GPZ1100 throttle bodies with the stock peak and hold injector instead of the Bosch saturated.
Going to try some resistors here and there and slowing down the ignition advance.
I have some vacation to burn up so maybe I can make some progress.
Pics to follow also.


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Offline Nebr_Rex

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Re: Dr. Jekyll and Mr. Hyde ( a pair of KZ400s)
« Reply #68 on: Aug 10, 2013, 00:44:32 »
Update, resistors look to be paying off.
Put some stock carbs back on temporarily and did a little rejetting.
For your information, bare carbs, 122 dynojet main ( 130 Keihin ) and two washers,
3 1/2 turns out and still a little lean just off idle.
So it's back to Radio Shack in the morning for more resistors.
The resistor thing just might eliminate the need for an adjustable pressure switch mentioned earlier.


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Offline Sonreir

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Re: Dr. Jekyll and Mr. Hyde ( a pair of KZ400s)
« Reply #69 on: Aug 10, 2013, 00:48:23 »
Pick up a potentiometer.  Then you can adjust the resistance freely until it's correct.
Sparck Moto - http://www.sparckmoto.com

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