KZ1000 Frankenstein motor

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21 Sep 2017 15:31 - 21 Sep 2017 15:32 #771379 by KGKZ1K
KZ1000 Frankenstein motor was created by KGKZ1K
Good Afternoon All,

The weather has started to turn and I am getting my winter projects in order...I am wanting to do a little performance upgrading on my 82LTD as my first winter program..
It is currently bone stock J motored(minus V &H Meg with no baffle and stage 1.5 jetting)
My questions are

1- I have a couple 1100 jugs sitting on the shelf and am looking at aquiring a complete 84 GPZ1100 head.
Do I need to run GPZ specific pistons (believe them to have larger wrist pins??) or can I run J motor 1100 pistons with this head?
2- I am planning on running either 1130 or 1170 pistons based on availability... will 29 smoothies provide enough carb for a 84 GPZ head/cam combo on an 1171 cc 10.5:1 comp motor?...or just break the bank and go for the RS34'S ?

Thanks all for your time and any help!

Cheers
Kris

1980 kz1000 LTD
1982 Kz1000B
1980 honda cm400
2x 1993 zx7
1991 zx7 project
1978 km100
1979 'zuk PE250
1993 yz125
....all kinds of other cool shit
Last edit: 21 Sep 2017 15:32 by KGKZ1K.

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22 Sep 2017 17:07 #771464 by daveo
Replied by daveo on topic KZ1000 Frankenstein motor
You may find something of interest in the following post:

www.kzrider.com/forum/2-engine/596933-ca...un-this-on-my-engine

1982 KZ1100-A2

The following user(s) said Thank You: KGKZ1K

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22 Sep 2017 22:33 - 22 Sep 2017 22:36 #771484 by KGKZ1K
Replied by KGKZ1K on topic KZ1000 Frankenstein motor

daveo wrote: You may find something of interest in the following post:

www.kzrider.com/forum/2-engine/596933-ca...un-this-on-my-engine


Thanks for the link Dave...
Are you running stock Bs34's?
...and is the power increase worth the effort/cost?

Edit!...by worth the cost I am referring to the head upgrade(as opposed to the standard 'J' head)...i realize power costs and it's pay to play...but these heads are bringing serious coin at the moment.

1980 kz1000 LTD
1982 Kz1000B
1980 honda cm400
2x 1993 zx7
1991 zx7 project
1978 km100
1979 'zuk PE250
1993 yz125
....all kinds of other cool shit
Last edit: 22 Sep 2017 22:36 by KGKZ1K.

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23 Sep 2017 10:21 - 23 Sep 2017 10:34 #771513 by daveo
Replied by daveo on topic KZ1000 Frankenstein motor
Had BS34's, but RS34's went on last year. Unlike BS34's, the RS carbs have more jetting-tuning options, designed for use with pod filters or stacks.
If you go with RS carbs, the throttle system will need to be changed to a twin-cable setup. Also I found that an on-off petcock works better for fuel management than the vacuum unit that originally came with the bike.
For air-flow, velocity stacks tap a modified semi-original air box, that still utilizes the original crankcase breather system.

It works...

:)

The effort was definitely worth it, and I would do it again the exact-same way.

1982 KZ1100-A2

Last edit: 23 Sep 2017 10:34 by daveo.

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