2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Difference between s4 and s5 gas tanks?

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Old Dec 11, 2010 | 10:27 AM
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Difference between s4 and s5 gas tanks?

Yay or nay?
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Old Dec 11, 2010 | 10:41 AM
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snap crackle brap
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From: indianapolis, indiana
yay or nay what?................are you wanting to know if they are compatible?
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Old Dec 11, 2010 | 10:47 AM
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brap or brap. yes.
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Old Dec 11, 2010 | 10:50 AM
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Originally Posted by blackrotary23
yay or nay what?................are you wanting to know if they are compatible?
Yeah...look at title of thread
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Old Dec 11, 2010 | 10:54 AM
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https://www.rx7club.com/showthread.p...ht=fuel+sender
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Old Dec 11, 2010 | 10:59 AM
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grab the straps from the S5 tank since it's larger and you'll need to swap your fuel pump/sending unit body into the other tank since the S5 has the 4 pin connector on top of the sender where the S4 has bulkhead connectors on it instead(S4 sender is more reliable when modded with upgrade fuel pumps).
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Old Dec 11, 2010 | 11:11 AM
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Well my car is an s5 so if I do get the s4 grab those straps?
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Old Dec 11, 2010 | 11:24 AM
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yea, you will need the straps to match the series of gas tank you are installing. if you have an upgraded fuel pump i might also consider getting the sending unit with the tank and hardwiring it to your car.
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Old Dec 11, 2010 | 06:44 PM
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Originally Posted by Karack
yea, you will need the straps to match the series of gas tank you are installing. if you have an upgraded fuel pump i might also consider getting the sending unit with the tank and hardwiring it to your car.
Ya.the Tops of the Tanks(re: sending units) are different on an S5 compared to an s4.
You are also going to notice that Tank capacity is different too.That is why you should get the Straps with the tank that you put in.,just in case the Straps on the car turn out to be too short(or too long).
Get as much Wiring off the car as you can.(pump/sender harness From the car)
The S4 has a Connector wire that runs from the Front of the Rear strut wall to the tank,and then it is connected again to the sending unit.
The S5 is just connected at the Tank.,,and the connector is different too,than that of an S4.
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