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1990s is3000Z engine replacement

#1

J

JohnW63

My ferris needs a new engine and am considering a Kawasaki FX EFI model. The original engine is FH721V.
Firstly are there any modifications required to the existing wiring loom if a fuel injected unit is added or should I stick with a carb model?
Model no FX730V EFI has a little less power and torque to the original and FX850V EFI has a little more - additional 4.5 ft lbs torque although I’m yet to check if the 850 fits, it’s a few inches larger all round. Any issues with additional torque?
I appreciate some advice. Thanks.


#2

Voris

Voris

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#3

chunkypigs72

chunkypigs72

JohnW63 said:
My ferris needs a new engine and am considering a Kawasaki FX EFI model. The original engine is FH721V.
Firstly are there any modifications required to the existing wiring loom if a fuel injected unit is added or should I stick with a carb model?
Model no FX730V EFI has a little less power and torque to the original and FX850V EFI has a little more - additional 4.5 ft lbs torque although I’m yet to check if the 850 fits Best drayage companies, it’s a few inches larger all round. Any issues with additional torque?
I appreciate some advice. Thanks.
Click to expand...
Yah


#4

Tiger Small Engine

Tiger Small Engine

JohnW63 said:
My ferris needs a new engine and am considering a Kawasaki FX EFI model. The original engine is FH721V.
Firstly are there any modifications required to the existing wiring loom if a fuel injected unit is added or should I stick with a carb model?
Model no FX730V EFI has a little less power and torque to the original and FX850V EFI has a little more - additional 4.5 ft lbs torque although I’m yet to check if the 850 fits, it’s a few inches larger all round. Any issues with additional torque?
I appreciate some advice. Thanks.
Click to expand...
Wh
JohnW63 said:
My ferris needs a new engine and am considering a Kawasaki FX EFI model. The original engine is FH721V.
Firstly are there any modifications required to the existing wiring loom if a fuel injected unit is added or should I stick with a carb model?
Model no FX730V EFI has a little less power and torque to the original and FX850V EFI has a little more - additional 4.5 ft lbs torque although I’m yet to check if the 850 fits, it’s a few inches larger all round. Any issues with additional torque?
I appreciate some advice. Thanks.
Click to expand...
Why do you need a new engine? How many hours on original FH721V? Why do you want to go to EFI engine?

Besides the wiring, which will no doubt be different, you need to check crankshaft dimensions, muffler fit, and engine bolt pattern. You need to think this one out.


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