Fuel Pumps different between S4 and S5's???
05-27-02, 04:52 PM
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Fuel Pumps different between S4 and S5's???
OK- I'm just about to put a TII fuel pump into my 90 GXL....
It's from an 87 TII.
I was under the impression that the S4 and S5 fuel pumps were the same, but after reading a bit of scott89t2's page (1300cc.com) It now seems that the mounting brackets ("fuel pump holder") are different or something??
I really hope not.. and this is the first I've heard of it...
It's from an 87 TII.
I was under the impression that the S4 and S5 fuel pumps were the same, but after reading a bit of scott89t2's page (1300cc.com) It now seems that the mounting brackets ("fuel pump holder") are different or something??
I really hope not.. and this is the first I've heard of it...
05-27-02, 05:26 PM
#2
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The fuel pumps are different...the s4's have s 16 gallon tank and the s5s have a 19 gallon tank, so obviously the pump frame must reach farther down for a s5...putting in an s4 will yeild you only 3/4 of a tank of useable gas 
Id say you could take the pump itself off the s4 frame and install it onto your s5 frame and be ok, but I havent ever done it.
Id say you could take the pump itself off the s4 frame and install it onto your s5 frame and be ok, but I havent ever done it.
05-27-02, 07:19 PM
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OK- so the actual motor unit, wiring, and attachmnents are all the same, I just have to use the bracket that is in my tank now, and just swap the 87 pump on to it...
Correct?
I hope so..
Is is just a direct fit in onto the bracket? I don't see why Mazda would change little things like that....
Correct?
I hope so..
Is is just a direct fit in onto the bracket? I don't see why Mazda would change little things like that....
05-27-02, 07:24 PM
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The little pump is the same. You can swap pumps between all 2nd gen RX-7s, and FDs. Of course, flow is different. 
See attached pic of FD pump installed in my '86 NA frame.
See attached pic of FD pump installed in my '86 NA frame.
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