1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Kow many pistons does a 1 gen RX-7 have

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Old 03-21-03, 03:16 PM
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Kow many pistons does a 1 gen RX-7 have

I would be grateful if someone could tell me how many pistons an 1985 RX-7 has.
Old 03-21-03, 03:18 PM
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I sure hope you are joking with 650 posts you have on a RX-7 forum???

For ur info (if you are actually ignorant enough) first gen has a Rotary Engine. It has two rotors. No pistons
Old 03-21-03, 03:55 PM
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actually i believe the brake calipers have 2 pistons..........but other than that




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Old 03-21-03, 03:57 PM
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One at each corner,....!?
Old 03-21-03, 04:05 PM
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7... clutch slave, clutch master, brake master and calipers.
Old 03-21-03, 04:06 PM
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Re: Kow many pistons does a 1 gen RX-7 have

Originally posted by Paul Fitzwarryne
I would be grateful if someone could tell me how many pistons an 1985 RX-7 has.
Good one Paul!
Old 03-21-03, 04:20 PM
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inittab-trivia night question!

revhed- thanks we are getting there

Last edited by PaulFitzwarryne; 03-21-03 at 04:29 PM.
Old 03-21-03, 04:36 PM
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okay ... i'll bite, too

9 ... if you add the hatch struts

how's that?
Old 03-21-03, 05:46 PM
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If the hatch struts count, then I can think of 17. Ones mentioned above, front struts, rear shocks, and the 2 front & 2 rear bumper stocks.
Old 03-21-03, 05:50 PM
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what about the oil metering pump , that has a piston
Old 03-21-03, 06:01 PM
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dashpot has a little piston in it
Old 03-21-03, 06:06 PM
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How about we change the question to how many cylinders does and Rx-7 have? That way we can add door locks, and other misc. junk. Doesn't the OMP have a small pin sized piston too. Jeez, we're going to be at 36 in no time.
Old 03-21-03, 06:44 PM
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define piston please..... ok, what is its origin? hrmmmmmmm
P I S T O N, piston
Old 03-21-03, 06:47 PM
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SAME AS THE NUMBER OF VALVES IT HAS
Old 03-21-03, 06:53 PM
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Originally posted by MIKE-P-28
SAME AS THE NUMBER OF VALVES IT HAS
so not true, your tires have valves, but no pistons, unless you count the valve core plunger. some game this is, hey everyone think of ever single itty bitty part on a 1st gen and figure out how many pistons there are
Old 03-21-03, 08:05 PM
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Are there pistons in the locks?????
Old 03-21-03, 09:43 PM
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Actually, the RX-7 has dual/split braking system... The master cylinder is a single cylinder, but two pistons...

Two hydraulic systems, one for front-left and right-rear; One for the front-right; left-rear brakes... In the event of a hydraulic failure, you still have some braking ability.
Old 03-21-03, 09:51 PM
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Originally posted by Pele
Actually, the RX-7 has dual/split braking system... The master cylinder is a single cylinder, but two pistons...

Two hydraulic systems, one for front-left and right-rear; One for the front-right; left-rear brakes... In the event of a hydraulic failure, you still have some braking ability.
really? hmmm, seems dear old dad was right afterall....
Old 03-21-03, 10:09 PM
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Originally posted by 82transam
really? hmmm, seems dear old dad was right afterall....
eh?

I have diagrams from my text book from "Basic Braking systems"... A course I took while working for a shop.

Hey... Get paid to sit around and discuss brakes... I'll do it!
Old 03-21-03, 10:23 PM
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The stock fuel pump has an electromagnetically operated piston in it.
The float bowl solenoid is essentially a piston that closes off the vent when the car is shut off.
Old 03-21-03, 11:14 PM
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Originally posted by Pele
eh?

I have diagrams from my text book from "Basic Braking systems"... A course I took while working for a shop.

Hey... Get paid to sit around and discuss brakes... I'll do it!
My dad and I had a discussion about the brakes a long time ago and it ended up with both of us getting annoyed and not really solving anything, if what you say is right then he was correct.
Old 03-22-03, 12:13 AM
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ROFLMAO! Great trivia, man. But it's about the RX-7....is that really trivial?.....

Old 03-22-03, 12:19 AM
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For those of you that still have AC, you need to add the pistons in the compressor.
Old 03-22-03, 02:07 AM
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Originally posted by MIKE-P-28
SAME AS THE NUMBER OF VALVES IT HAS
Deceleration valve, Roll over check valve, coolant valve on the heater core, air ducting valves in the HVAC system, air control valve, thermostat.

Am I missing any??

Ryan
Old 03-22-03, 02:15 AM
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ah crap guys, think about it, most solenoids act as pistons.

just think about the rat's nest.

Originally posted by Paul Fitzwarryne
I would be grateful if someone could tell me how many pistons an 1985 RX-7 has.
S, GS, GSL, or GSL-SE?

5 speed? Automatic?

You could count the pistons inside the valve body of the automatic transmission...



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