rx7 gxl vs festiva?

[geezerstiva]

so i drove my friends rx7 the other day (auto, which sucks) and i'm thinking my car is faster. doesnt corner better, doesnt have a higher top speed, but i think it could be faster off the line. what do yall think?

[anomoly40]

I thought my friends Escort was faster than my Neon. Until I raced him. Some cars have a different feel to them and make them seem faster/slower than they really are.

[htchbck]

well the festy and the RX7 are both 1.3s, lol... but the RX7 has a bit more power, even if it does weigh more. Off the line though the fact that it is an auto does kinda slow it down

[TRUCKtiva]

It's probably not tuned right!! my rx wasnt that fast out the gate but anything that can wind up to 7-8000 rpms......

[oxbrain]

You'd have to really mess up an rx-7 to get it slower than a stock festiva.

[todd00]

what year rx7?

[solatare]

. the mazda rotary is actually 2.6 liters in size, cant remember why, but road and track and sport compact car both have a tech article on it

[muscle_Car1]

^ it puts them on an even playing feild. THe 2 rotor wankel makes 6 power strokes each revoltion of the flywheel, while a otto cycle engine makes 1 power cycle per cylinder every 2 rotations of the flywheel.

[anomoly40]

Thats why the Rotary can't compete in FIA sanctioned events. They won the 24 hours of Le Mans in 1991 and they outlawed them at the end of the season.

Here is a fun fact. Felix Wankel (the inventor of the Rotary engine) never had a drivers liscense.

[geezerstiva]

its an 86. i think the real problem with it is that the transmission shifts from first to second at about 3000 rpm. with the pedal on the floor. whats up with that? extremely annoying. oh well, not my car, i cant complain :lol:

[ectonine]

I have owned a few first, second, and third gen RX7's and they are always going to be faster than a Festiva. Even if its running on one rotor. I'm pretty sure the engine is a 1.3 liter combined, not 1.3 liters per chamber. That means a 3 rotor engine is 3.9 liters, and that doesn't sound right--Jeremie

[B6T]

. the mazda rotary is actually 2.6 liters in size, cant remember why, but road and track and sport compact car both have a tech article on it

No, it's a 1.3L. Each chamber displaces 654ccs when the rotor is at BDC. Multiply that by two, and you have 1.3L of displacement. However, there is one power cycle for every rotation of the eccentric shaft, per rotor. This means that it displaces 1.3L every 360deg. Since piston engines need 720deg to displace their rated displacement, people say a rotary is 2.6L because that it what it displaces in the equivalent number of rotations.

[B6T]

^ it puts them on an even playing feild. THe 2 rotor wankel makes 6 power strokes each revoltion of the flywheel, while a otto cycle engine makes 1 power cycle per cylinder every 2 rotations of the flywheel.

Incorrect my friend. The rotary fires once per chamber (or rotor) per revolution, meaning ignition events are 180 deg apart, so a two rotor 13B's ignition spacing is just like a 4 cylinder piston engine.

I think you're confused by the fact that the rotor spins 1/3 the speed of the eccentric shaft, meaning that it takes three revolutions of the flywheel per revolution of a rotor.

[B6T]

Here is a fun fact. Felix Wankel (the inventor of the Rotary engine) never had a drivers liscense.

Here's another fun fact... Wankel didn't invent the rotary, he just made it work well (designed all the seals).

[B6T]

its an 86. i think the real problem with it is that the transmission shifts from first to second at about 3000 rpm. with the pedal on the floor. whats up with that?

The transmission kick-down switch isn't functioning. That's whats up, yo.