carb heater & water pump

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madmort
Posts: 7
Joined: Mon Jan 12, 2015 8:43 pm
My Bike: zxr 400 l2

carb heater & water pump

Post by madmort » Wed Apr 01, 2015 10:16 pm

Hi just in the middle of engine swap from l model to a h engine and upon fitting the water hoses the pipe from carb back to the head their is no inlet where the l model is,
Question is is this really needed as not planning to do winter riding,
Also I was told that this engine was running in a l model and I've heard you have to rotate the water pump yet I can not find any photos of this been done so other question is how would you no this has been done.
Many thanks

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banner001
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Posts: 2273
Joined: Sat Sep 24, 2011 3:27 pm
My Bike: ZXR400 L4
Location: Nuneaton

Re: carb heater & water pump

Post by banner001 » Thu Apr 02, 2015 9:57 am

the carb heater is supposed to prevent carb icing, ive not known anyone to genuinely have it on here, and many people (myself included) have removed the carb heating system with no issues - so just blank off any bits of the pipework and you are good to go.

you dont rotate the water pump, you rotate the outlet coming from the cylinder head that goes to the radiator, on the H models this needs to point to the left of the bike (as the coolant expansion valve is located near the headstock) on the L models you run the pipe to the right of the engine as the radiator inlet is located on the right of the radiator under an access panel.

so if you have a H engine with a L radiator you need to have the outlet pipe from the cylinder head running to the right.
UK ZXR 400 L4
UK ZXR 400 L3 track bike
1989 FZR 1000 EXUP-R streetfighter

madmort
Posts: 7
Joined: Mon Jan 12, 2015 8:43 pm
My Bike: zxr 400 l2

Re: carb heater & water pump

Post by madmort » Thu Apr 02, 2015 8:54 pm

Thanks for the reply

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