RZV 500 fuel level sending unit.

General forum on fairings, seats, tanks, tail sections, painting and other bodywork modifications

Moderator: rztom

Message
Author
sundaytimes
Posts: 137
Joined: Sat Jan 08, 2011 12:44 pm
Location: Oxfordshire, UK

Re: RZV500R Fuel Gauge Sender

#16 Post by sundaytimes » Thu Sep 13, 2012 5:39 pm

Alan_Kiwi wrote:Here you are, it's a complete unit, the cable is permanently fixed to the plate that bolts onto the tank. I don't know if it's just my bike but the gauge is very sensitive to fuel movement, it's ok when full or nearly full but the needle bounces around as the level drops. That's why I have got a spare....http://www.freeimagehosting.net/wgnyp http://www.freeimagehosting.net/fmh3u
Mine is exactly the same, it oscillates a lot when not full. I think it's slightly more stable when the engine is not running.

Steve

User avatar
Gary Papesh
- - - - -
- - - - -
Posts: 669
Joined: Mon Nov 21, 2005 1:54 am
Location: Joliet,Illinois

Re: RZV 500 fuel level sending unit.

#17 Post by Gary Papesh » Tue Nov 07, 2023 10:00 am

Hi Matty, I’m finally going to attempt this fuel sender modification to the tank. By any chance do you still have the pictures that used to be posted here?
I have the sender, but I’m trying to get an idea of what the hole in the bottom of the tank looks like and how the sender fastens to it. Thanks !
The man who dies with the biggest carbon footprint WINS !!!

User avatar
giron
- - - - -
- - - - -
Posts: 561
Joined: Wed Nov 16, 2005 7:49 pm

Re: RZV 500 fuel level sending unit.

#18 Post by giron » Tue Nov 07, 2023 2:52 pm

What I'm about to suggest is more expensive, but is done right. You need the following parts
1. RZV500 gas tank
2. RZV500 wiring harness
3. RZV500 gas tank sending unit
4. RZV500 right handle bar switch
5. RZV500 instrument cluster

or simply buy an RZV500
1985 RG500(Walter Wolfe)
1984 IT490
1985 RZV500R
1997 VFR750
1992 FZR1000
RGV500
TZR500
TZR350
1990 RZ350
1971 Porsche911S

bokusouchi
Posts: 80
Joined: Sat Apr 13, 2013 4:36 am

Re: RZV 500 fuel level sending unit.

#19 Post by bokusouchi » Wed Nov 08, 2023 1:23 am

here is a picture of my original rzv500r tank .

( It has been epoxy coated inside , so that is why the metal sheet look thicker than normal ...)

I agree with Giron , you should at least try to find the original sender unit , the right handle switch and the temperature/fuel combination gauge .
auction.yahoo.co.jp is your friend ....

Do not hack you original wiring harness (This would be pity ) just buy the connectors needed and build/add a small additionnal wiring harness with the additional
wires for sender/gauge/switch etc .

Fz750 gauge is also an option , if you do not mind not being strictly original .
https://i.ebayimg.com/images/g/8UwAAOSw ... s-l640.jpg


modifying an rd500/rz500 tank is also an option but , it is a a bit delicate , and there is a non zero risk of permanently damaging your tank
if the modification is botched .... also you should be very careful about making it leak-proof .
As you probably well know , welding a tank without degassing is very dangerous ..
I did the same modification on an Rg500 tank . ( i did not do any welding , holes were drilled in the tank bottom ,then nuts were sunk in epoxy on the inside of the tank ...)
The Rg400/500 (JDM) have a recovery cup with a a drain tube under the sender unit in case of leak (much safer ).
the RZV does not have a recovery cup ...







Image

User avatar
Gary Papesh
- - - - -
- - - - -
Posts: 669
Joined: Mon Nov 21, 2005 1:54 am
Location: Joliet,Illinois

Re: RZV 500 fuel level sending unit.

#20 Post by Gary Papesh » Thu Nov 09, 2023 10:21 am

Thanks for responding gentlemen! I have a rzv sender unit. I’m going to measure the resistance of the sender from low position to high. Then I will put the temp sender in water and check the resistance at a low temp, maybe 120 f. ,and check it again at maybe 240 f. Whatever it takes to figure out the operating range of the gauge. Then I will see how things match up, and take it from there.
The man who dies with the biggest carbon footprint WINS !!!

Post Reply