Difference between s4 and s5?
#1
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Difference between s4 and s5?
I'm just wondering how the power difference is achieved between the series 4 (fc1031) and the series 5 (FC1032). Did Mazda simply increase the boost or have they made changes elsewhere?
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The s4 has a lower compression motor and comes with a max of about 7 psi boost. The s5 on the other hand has a higher compression motor and comes with about 8.5 psi boost. Hope this answers your question.
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also you dont have the circle tails, and it has black side moldings no matter what color the exterior is. Rims are diffrents, mirrors, rear spoiler, front bumper, and the gauge cluster. Hope this is enough for ya. S5 is the way to go but the S4 is still a beauty!
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It is totally worth replacin the s4 motor with an s5 five motor. If you go with the s5 you get 205 hp at the flywheel. Also when you do the same mods to the s5 as the s4 you get more power.
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hmm...
I'm sorry but i'm kinda new with Rx-7s but i would figure that the S4 would be better. First off, would a lower compression engine be better for higher boost? And isn't there any upgrade turbo kits for the TII? HKS? Trust? I'm looking to buy a TII but i want it to keep up with my MKIV...well sorta.
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#8
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Originally posted by BLK90TII
It is totally worth replacin the s4 motor with an s5 five motor. If you go with the s5 you get 205 hp at the flywheel. Also when you do the same mods to the s5 as the s4 you get more power.
It is totally worth replacin the s4 motor with an s5 five motor. If you go with the s5 you get 205 hp at the flywheel. Also when you do the same mods to the s5 as the s4 you get more power.
#10
Originally posted by RX-7Impreza
plus the S4 is lighter and has better looking tailights and no squirrel belt
Justin
plus the S4 is lighter and has better looking tailights and no squirrel belt
Justin
I dont have the belts, and I DO have the best looking taillights....
...of course, I have a European/JDM TII
As for the S4 having the same power as the S5......how's that even possible ? They start with 20HP difference from the word "GO". Same mods should lead to same -if not even bigger- difference in power output
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with an s4, if you are making a lot of power you have to worry more about craching the rearmost housing where the oil filter is. this is not as big of a problem with the s5 motor.
my $.02
dave
87 TII (series V conversion)
my $.02
dave
87 TII (series V conversion)
#18
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Re: hmm...
Originally posted by Aznplayer911
First off, would a lower compression engine be better for higher boost?
First off, would a lower compression engine be better for higher boost?
And isn't there any upgrade turbo kits for the TII? HKS? Trust?
#21
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No way!! the s5 lights dominate the s4 lights
If your a fan of the old T-Bird tail lights, then then you would be a fan of S5 taillights.
But, this observation has been a spark to flameing before.......
But, this observation has been a spark to flameing before.......
#22
Originally posted by RexSe7en
quote:
--------------------------------------------------------------------------------
Originally posted by The Ace
i like the S4 lights better
--------------------------------------------------------------------------------
No way!! the s5 lights dominate the s4 lights IMO
quote:
--------------------------------------------------------------------------------
Originally posted by The Ace
i like the S4 lights better
--------------------------------------------------------------------------------
No way!! the s5 lights dominate the s4 lights IMO
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