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

piston v.s. rotary

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Old 12-13-04, 12:51 PM
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piston v.s. rotary

what would win a rx7 1st or 2nd gen either one verses a second gen piston conversion with a mustang 5.o from 1991 straight drag quater mile. both stock engines
Old 12-13-04, 01:01 PM
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5.0 would win easy. But if you took the money it would cost to do a 5.0 swap and put it into a turbo for the rotary, the rotary would kick its ***.
Old 12-13-04, 01:37 PM
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Doesn't even warrent an answer.
Old 12-13-04, 01:44 PM
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lets the that buttstain basterdization try to turn!
Old 12-13-04, 08:00 PM
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Originally Posted by altf4
lets the that buttstain basterdization try to turn!

New Word Alert: Buttstain Bastardization
Old 12-13-04, 08:20 PM
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V8 RX-7

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Originally Posted by coldy13
5.0 would win easy. But if you took the money it would cost to do a 5.0 swap and put it into a turbo for the rotary, the rotary would kick its ***.
A properly designed turbo motor can be very costly, very few have done it for less then $2000

on the other hand, you can easily do a Ford 302 swap for $2000

Stock rotary vs V8, V8 would win no problem.

I think it would be a closer race with a big turbo and large streetport vs V8.
All you have to do to the 89-93 Ford 302 would be aluminum heads, throttle body and full exhaust and your making a lot of RELIABLE power.

I think all the V8 haters out there are just in denial because a V8 generally is more powerful and efficient compared to the 13b.
Old 12-13-04, 08:36 PM
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I just say this place inst a place for piston engines. Its a Rotary Enthusiast forum.


yes there are the few people putting V8's in the 7's, but thats ruining the escense of the 7.


I say get a Datsun 240Z and pute a LS1 in that. Wont throw off the weight distro that much, and you get some nice power...and it also doesnt entirly ruin something that makes that car unique.
Old 12-13-04, 08:41 PM
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incredibaly funny my friend tooka 5.0 inhis stok 12a,dunno wat year it was but yea took him 3 times .
Old 12-13-04, 09:53 PM
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Always comparing apples and oranges.

Look, all the **** would come to an end if somebody made two rotor rotary engines in all the HALF SIZES of the boingers. Know what I mean ? The 2.6 liter boinger versus the 13B. The 5.0 Ford versus the 25F. The 383 stroker versus the Wankel 32R. They'd all be spanked to hell in half the displacement. Big rotary engines ( and I don't mean just stacking inline what's available like the 20B ) would rule ******* earth. But they aren't and weren't commercially viable.

Maybe when hydrogen happens... !?
Old 12-13-04, 09:55 PM
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PS There is no Savanna God. Savanna is the patron saint of fucked up mirror placement.
Old 12-13-04, 09:56 PM
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Originally Posted by altf4
lets the that buttstain basterdization try to turn!

"lets the that"


...WTF?? Grammar school check, please.
Old 12-13-04, 09:57 PM
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Very good, Turbo. The dazzling new word blinded me to the typogrammatical error.
Old 12-13-04, 10:08 PM
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Sorry. I meant to say "lets see".


I do suck at grammar though.
Old 12-13-04, 10:45 PM
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Right near Malloy

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I say run three times.

Once at the drag strip.
Once at the autocross.
Once at the road race. Several laps.
Old 12-13-04, 10:46 PM
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Originally Posted by altf4
I just say this place inst a place for piston engines. Its a Rotary Enthusiast forum.
Hmmmm. I guess my grammaticle isn't working either. I was sure that Name of this forum was "RX-7 Owners Club", not "Rotory Enthusiast forum".
And I thought that since I am an 'RX-7 Owner', that this is the place for me, regardless of what engine I have installed.

As for doing a 240z, I agree 100% that it is cool. But diehard Z owners think that it is sacrilege to swap a v8 for the inline 6. See, you can't just say it of one car, and then say that it is perfectly acceptable to do it to another car. Either engine and "Parts" swapping is ok with you or it isn't, no matter what the car.

I perfectly respect your belief that your RX7 should be left Rotory. But let me ask you this: How many "aftermarket" parts do you have on your car? If you have 1 or more, then it isn't original anymore and it is fair game.

If people are so anti- v8, then they should have a Rotory Only Forum. Then you could include all the other Rotorys, even the ones that GM tested but never produced. Of course then you wouldn't be just RX7's anymore, so maybe you would need an Only Rx7's with rotory engines. But then, you would have to classify as to what is acceptable in Rotory engines. Holley carburetors couldn't be allowed, because that takes away "the true essence" or "originality" of the car. Hmmmmm, better cut out after market wheels too. Ooops yep better scratch that suspension setup. Rollcage? After market seats? how about those gauges? Nope those aren't allowed either......

I know that I may seem to be going overboard on this, and it is not directed at one person or any person. This is just how I feel about this whole piston vs rotory argument. Where do you draw the line?


Actually, I just like stirring up the pot. THere is no harm intended or directed. I respect everyones beliefs and hope that mine are just as respected. When it comes down to it, I won't change your mind if you don't want it changed. But it is fun debating these things.

Later,
Bill-------> The piston and rotory RX7 owner and enthusiast.
Old 12-13-04, 11:00 PM
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Check out the Grassroots Motorsports $2004 competition. My friend built a 12sec FC with a 302 in it for under $2000 (budget is the year, $2004). The thing is slick close up and fast. Took 3rd overall in a competition that rates on drag, autocross and concourse (show). Too bad he lost to a Neon in the Autocross.
Old 12-13-04, 11:02 PM
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I say everybody do whatever they like. I've had a shitload of cars over the years and have no problem with the piston engine. It's not much of a challenge to get 300 or even way more horses out of a V8. I think alot of the mods including engine upgrading is so much because it IS a challenge. It's fun. It's rewarding. It's debatable. It's an opportunity to be unique within a unique platform. There is no formula. It's more than calling 1-800-JEGS and getting the crate engine delivered next Tuesday. It's a hobby.
Old 12-13-04, 11:12 PM
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Reason why i don't like V8's in the 7's is the gross weight difference between power plants. THe V8 even a all aluminum blocl throws off the weight distrobution so much, that part of the fun aspect of driving the 7 is lost.
Old 12-13-04, 11:32 PM
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Well, if you consider how heavy the 13bt is, the weight difference of a LS1 is less than 50lbs, which isn't considerable in my opinion. Considering the tradeoffs.
I say, if you think the v8 is the right choice for your car, then put one in.
Though people tout this big aftermarket support for v8s, but I don't see the argument. What do you want for the rx7 that isn't available already? So what if you can buy heads or cams from 1000 different companies, most people will buy from a few select manufacturers anyways. Though, I will admit, I would like to see more rebuild kits available aftermarket.
So far as which is better.. Well, depends on your needs. For the strip, the v8 is the engine to have it seems, and they do decent at the track too. Like I said if you can do well with it, go for it.
But for me, I will stick with my rotary for awhile.
Old 12-13-04, 11:50 PM
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Originally Posted by SSRx7
Hmmmm. I guess my grammaticle isn't working either. I was sure that Name of this forum was "RX-7 Owners Club", not "Rotory Enthusiast forum".
And I thought that since I am an 'RX-7 Owner', that this is the place for me, regardless of what engine I have installed.

As for doing a 240z, I agree 100% that it is cool. But diehard Z owners think that it is sacrilege to swap a v8 for the inline 6. See, you can't just say it of one car, and then say that it is perfectly acceptable to do it to another car. Either engine and "Parts" swapping is ok with you or it isn't, no matter what the car.

I perfectly respect your belief that your RX7 should be left Rotory. But let me ask you this: How many "aftermarket" parts do you have on your car? If you have 1 or more, then it isn't original anymore and it is fair game.

If people are so anti- v8, then they should have a Rotory Only Forum. Then you could include all the other Rotorys, even the ones that GM tested but never produced. Of course then you wouldn't be just RX7's anymore, so maybe you would need an Only Rx7's with rotory engines. But then, you would have to classify as to what is acceptable in Rotory engines. Holley carburetors couldn't be allowed, because that takes away "the true essence" or "originality" of the car. Hmmmmm, better cut out after market wheels too. Ooops yep better scratch that suspension setup. Rollcage? After market seats? how about those gauges? Nope those aren't allowed either......

I know that I may seem to be going overboard on this, and it is not directed at one person or any person. This is just how I feel about this whole piston vs rotory argument. Where do you draw the line?


Actually, I just like stirring up the pot. THere is no harm intended or directed. I respect everyones beliefs and hope that mine are just as respected. When it comes down to it, I won't change your mind if you don't want it changed. But it is fun debating these things.

Later,
Bill-------> The piston and rotory RX7 owner and enthusiast.
Not trying to sound like a jerk here or anything, but the name of our engine is spelled rotAry, not rotOry. It is wierd because it is rotOR, but rotAry. Sorry to get off topic, but it is just one of my pet peaves. You are welcome to go on flaming the newbie!! J/K!
Old 12-14-04, 12:20 AM
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No, it is not stock!

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V-8 vs Rotary

I built a 13b powered GLC years ago and drove it over 100,000 miles. My fellow GLC owners never complained about that!

I have a very nice 84 with a ported 12a and an RX-4 carb, dynoed at 130hp, lots of fun to drive. But my other one has a 5.0 Ford and weighs only 100 pounds more, most of that in the big automatic trans, which is in the middle of the car. I used aluminum heads, intake, radiator and water pump, plus the exhaust is lighter than the original. I have owned a lot of sports cars from an E-Jag to several Alfas, Porsches and numerous English and Jap cars. My V-8 RX-7 is the fastest and the most fun to drive, though I confess it is a bit scary in the rain!

I don't claim to be Carroll Smith, but I have read his books. I have modified several cars to improve their handling, won a lot of trophies Autocrossing. I believe I have a good understanding of the basics.

I think the people on this forum with the strongest opinions seem to know the least about cars. If you have not personally done engine swaps and suspension mods to a few cars, then you definitely don't know enough to be telling the rest of us what to do to our cars.

Some of my car projects are shown at:
www.cardomain.com/memberpage/646433
Old 12-14-04, 12:22 AM
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Originally Posted by DAVID GRIMES
Very good, Turbo. The dazzling new word blinded me to the typogrammatical error.

lol @ Grimes...damn...that's funny. *wipes tears*
Old 12-14-04, 12:27 AM
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I, too, repect anything anyone does to their cars. Whether it's a v8, or a v12. Hell, boingers aint all that bad. I was driving down my city and i saw one of the new WS6 Firebirds and DAMn that things flew...i wanted that engine bad...so bad i'd probably KILL to get it
Old 12-14-04, 12:32 AM
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Originally Posted by stilettoman
I built a 13b powered GLC years ago and drove it over 100,000 miles. My fellow GLC owners never complained about that!

I have a very nice 84 with a ported 12a and an RX-4 carb, dynoed at 130hp, lots of fun to drive. But my other one has a 5.0 Ford and weighs only 100 pounds more, most of that in the big automatic trans, which is in the middle of the car. I used aluminum heads, intake, radiator and water pump, plus the exhaust is lighter than the original. I have owned a lot of sports cars from an E-Jag to several Alfas, Porsches and numerous English and Jap cars. My V-8 RX-7 is the fastest and the most fun to drive, though I confess it is a bit scary in the rain!

I don't claim to be Carroll Smith, but I have read his books. I have modified several cars to improve their handling, won a lot of trophies Autocrossing. I believe I have a good understanding of the basics.

I think the people on this forum with the strongest opinions seem to know the least about cars. If you have not personally done engine swaps and suspension mods to a few cars, then you definitely don't know enough to be telling the rest of us what to do to our cars.

Some of my car projects are shown at:
www.cardomain.com/memberpage/646433
The rotary tow truck is the best.
Old 12-14-04, 12:35 AM
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No, it is not stock!

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"The rotary tow truck is the best."

Hey, that is the only one I didn't build myself! You really know how to hurt a guy.


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