1990 Mazda RX-7 series 5 for sale

[TougeTora]

Rotory school

Dayum, just a wealth of info. Okay, I remembered that there was something to do with airpumps in second gen. Rs and now I remember what it was, Thanks. Go ahead and keep on educating cuz..I already knew about the older rotory engines but listening to you, I find I am absorbing tons more. Again, Thanks!! You wouldnt happen to be able to steer me in the right direction in regards to aquiring an FB? I live in the middle of a hornets nest of them, but not a one is for sale currently...I am not looking immediately, but soon...I am starting a club soon for Rs in specific. <<--------T O T A L R X - 7/ R O T O R Y F A N A T I C--<<<<<<<
Okay, then..I'm outie..I need sleep...Peace. Tora

[Tom Harleman]

I was not trying to be offensive. I got my info from a RX-7 shop here in Indy. The guy has been working on rotories for 20 years. I am a 1st gen guy so excuse my ignorance. I am just trying to sell this car.

[TougeTora]

I was not trying to be offensive

No worries Brah, you werent offensive at all. In regards to teh wealth of information it was in regards to both you and flatlander..I too am a first gen guy myself. I feel that if anyone would actually do the right work they may be the ultimate in drift machinery. Its the high horsepower short wheelbase, light rear wheel load thing yellin that at me. At anyrate, I wish ya the best of luck in selling your car and I am looking to buy another first gen. My first two got stolen..well..one stolen, the other towed due to lack of registration. But I am ready for another. So I wouldn't mind if someone would drop a line once in awhile if they hear anything. Peace!! Tora

[Tom Harleman]

Any interest in this car? Please make an offer.

[FC3SGTU]

Originally posted by Tom Harleman
I am a 1st gen guy so excuse my ignorance.

Then you should have been aware that gsl-se's had 6 ports as well.

[theflatlander]

Originally posted by FC3SGTU
Then you should have been aware that gsl-se's had 6 ports as well.

that motor was really different from the fc3s motor, it had the same power but he rotors weighed over a pound more and had 3mm apex seals and also have 9-pin bearings compared to the s4 and above 12-pin bearings.
oh yeah bump for Tom.

[Infini IV]

Originally posted by theflatlander
umm sorry but all n/a FCs came with a 6 port motor the turbo has a 4 port. the differences between the series 4 and series 5 motor are 1: s4 has 9.4:1 compression where as s5 has 9.7:1 plus the s5 rotors are almost a pound lighter, the s5 motor came with better baerings and harder stationary gears, i think the dowel pins are located differently on the s5 which made the block stonger where as the s4 motor has been know to crack along the oil pedestal. the 5th a 6th ports are activated via air pump on the s5 where as they are activated by back pressure on the s4, also they're not butterflys that open they're sleeves.

Dowel pins are in the same location.

Something interesting is that European 6port 13b's had butterflies in the intake manifold which opened the 5th and 6th ports. Their aux ports also did not end abruptly in the iron, since there were no sleeves, so in theory, they would lend themselves better to porting of the auxiliary ports.