12abridgeport

ok, so if you are going to drop over 7k on a v8 conversion, for that ammount of money i wouldn've been able to make that 3rd gen go way faster than any other v8 and still have money for a new engine if i would blow it up.

There is a guy at the track i see all the time, he has got at least two rx7 with v8's in them, we are cool and all but that always pisses me off, as soon as i get my bridgey all tuned up, we are going to race, it's going to be a showdown

12abridgeport

I like your point DriveFast7

Mizeru

iTrader: (2)

Why do people keep asking a question with such a simple answer?

1) V8 RX-7s weigh 2800lbs-2900lbs after swap with full interior. That can't be done in a Camaro with full interior.

2) RX-7s handle better even with the V8

3) RX-7s look better

'85 GSL 302

Man oh man. I needed an excuse to join this forum anyway, might as well be a good argument. :-)

Will someone please explain the problem with swapping a V8 into a 1st Gen? I've yet to hear a logical argument from anyone aside from "It's not an RX-7 anymore" Here's how I see it.

I spend $400 on my 85 GLS, no motor.
I spent $2000 on my swap, and ended up with a Ford 5.0L V8, some goodies, and T5 tranny. What I end up with is a car that cost me less than $3000, has 300+hp, and is an awsome car.

Let's see what I keep reading,

Drag cars: Um, my RX-7 is being specifically built for road racing. This time next year it will have a Tri-Link, Pahnard bar, GC coil overs, Eibach rear springs, and some other goodies. It's no drag racer, nor will it ever be. The 302 motor mounts extreamly low and very far back in the chasis giving the car excelent weight balance. True I have added more weight to the car, but with stiffer springs, the change will be more than offset by the large amounts of torque and horsepower. Properly set up, it's possible and fairly easy to overcome all of downsides to adding a V8.

As for buying a mustang or whatever. I don't want a Mustang. RX-7's are cool cars. I drove my GSL for 2 weeks before pulling the old motor and giving it back to the guy. It was super fun to drive, but painfully slow. I don't want a Mustang, the only thing good about the Mustand in the motor and the rear suspension. Since I don't drag race, the motor's all I want. Not to mention a V8 RX-7 weight around 2500 lbs, where a 5.0 Mustang is in the 2900's and up.

As for relyability, my club races an 81 GSL, it has 186,000 miles on the origional motor, the last 30k have been abused, beat on, raced, and just plain F'ged up. It still runs strong. I doubt any piston motor could do that. However, my expereance with decent rotories ends there. If I wanted a durable race car, I'd have a 12A. If I want a fast race car, then the rotory must go. It's very hard to build a high horsepower rotory motor that holds together for an extended amount of time. As for the 3 rotor, i've spent less on my car, engine, and tranny that I would on the whole engine. Not to mention the 3 rotor adds so much weight, you'd be countering your own arguments of the cons of the V8.

The other argument is potential. I've seen 400-500hp 13B's no problem. I also have seen them pop after just one pre-deatonation. The other problem is that the just cap out after a certian time. You just can't substitute the lack of displacment.

V8:
For a nominal fee, you triple the horsepower, torque, displacment, and potential while retaining the handling and light weight of the RX-7. I really don't see the logical argument against this. Feel free to reply in an adult fashion. I think name calling is a bit much.

And as for the Datsun comment earlier, people on the Datsun boards widel,y regard this swap with distain as well. They think it's the "easy way out." But when you can pick up an RB20DET and stuff it in and get similar results, I can't blame them. They have alternatives on the same level as the V8 swap, I don't see any similar alternatives with RX-7s. Feel free to prove me wrong.

Oh yeah, the stock rear end will take the V8 torque simply because the size of tire you can fit in the stock wheel wells isn't large enough to give you enough traction. In short, you'll spin tire before you break rear end.

12abridgeport

I don't think name calling is called for but i can't argue that the fastest car is v8 powered. However i can argue that its possible to have a faster rota street car than a v8. Besides it would be a lot of fun to whope your ls1 and see the expression on your face PRICELESS i don't care if i blow my motor up while doing it.

'85 GSL 302

Actually I believe that would be the BMW V12 McLaren. Unless you mean fastest of all time. That would be a Turbine powered car, running over 450mph as best as I could find. Sorry, no V8's.

'85 GSL 302

See, there's a problem right there. I'd rather have a car that's slightly slower, and held together for the whole time than one that was faster and breaks. That's why people that but "race" parts on their cars aren't always faster, because many race teams do things for relyability. It's not who's the fastest, it's who makes it to the finish.

TOUGHGUY

Nicely put '85 GSL 302. The price per HP curve on a rotary shoots through the roof after 200HP. A 20B? Do you have $20 000? Even the lowliest 5.0 out of a Crown Vic puts out 180HP and 250ft-lbs of torque at a relatively low RPM. You can find those for cheaper than most used RX7s! Putting one in a 1st gen is a sub $1000 proposition. That, my friends, leaves alot of dead presidents for suspension and brake tuning, things which, arguably, any RX7 enthusiast is likely to do anyhow.

If I wanted a Camaro or Mustang, I`d have bought one. I wanted an RX7. I like it so much I might buy another one and swap the motor out of that one too! The more RX7s I can save from a life of mediocrity with a rotary powerplant the happier I`ll be. Oh but I guess that will make you rotorites sad now wouldn`t it? Ask me if I care!

A better overall experience in the true spirit of Hot-Roddom. that is the raison d`être of a V8 RX7. It is obviously not for the faint at heart or for the masses. Only resourceful and ingenious individuals need apply. Close your eyes if you`re scared!

Toughguy

12abridgeport

Well speaking of reability, as far as i heard in Australian touring cars, rotaries replace their engines every season, where as, pistons replace them after each endurace race.

12abridgeport

It's ok Toughguy i'll let you know how bad i'm going to beat that v8 rx7.

jeremy

iTrader: (1)

thats what i was going to say. i was just curious what this thread has to do with rearends? speaking of turbines, i believe the batmobile was really a v8 with a ford 9". it also used flowmasters. batman orginally had a mullet. i have now added more useless info to this religious debate.

DEATH TO ALL APPLES!!!!!!!!!

TOUGHGUY

Come on up to Canada and make sure your car can start when it`s cold `coz it`s only 5 degrees celcius outside right now. Don`t sing it, bring it!

Toughguy

12abridgeport

i appreciate you enlightening me with the techical information theren but a faster car doesn't always have more HP, there are a lot of other things that matter in case you didn't know.

12abridgeport

Even bridgeports have no problem starting in cold weather

'85 GSL 302

Very true, things like torque, hp/weight, and gearing.

Hmm, 302 Torque can never be matched by a rotory engine by the laws of physics. The weight/hp ratio of the V8 swap is very low, mine's around 8.3 lbs per hp. And with the stock 3.90 gear, and I'm running the same 3.90 rear end.

It's funny how I issued a challenge to be convinced there are reasons to not swap the V8 and I haven't heard one yet.


Horse power sells cars, torque wins races.

hornbm

look there is nothing wrong with v8's.

Todays rotary engines, and todays v8's do not have much of a polution problem, but niether one are perfect.

Yesterdays rotarys, and yesterdays v8's are emissions problems. But I, like most other people on this forum, could care less about emissions.

The rotary is an old design, so is a v type piston engine.

A piston still moves up and down in the same fassion to draw intake, compression, power and exaust . Valves still control intake and exaust.

A rotary, rather a wankle rotary still makes power the same way as well.

While there are new ideas to make these processes more efficent the design is still the same.

And sure a street ported rotary wont pass emissions. Either will a race v8.

Bottom line is you cant compare todays engine to yesterdays competition. You have to compare todays engine to todays compitition.

'85 GSL 302

But I'm comparing yesturdays V8 with yesturdays Rotory... :-)

Seriously though, the carb argument is ok. People are basically saying a stock V8 passes emessions, while a modded rotory to be on the same level as a stock v8 won't. I personally don't care about emessions but some of those Cali people sure do.

Directfreak

iTrader: (2)

Allright V8/7 Guys...

Show us your V8 Powered 7's.
I like pretty pictures.

TOUGHGUY

True but we are talking about two 1st gens here right? With all else being equal, the one who`s got the moxy under the hood will be victorious. Oh and let`s go get emmissions tested at the MTO`s Clean Air Test facility while we`re at it. The outcome will be the same whether you pass or not but it`s just something else to compare.

Toughguy

Mizeru

iTrader: (2)

Convertible

'85 GSL 302

Pretty picture time.



I need to go back out and take some more but this is all I have for now.

Hmm, this topic has De-railed...

'85 GSL 302

Hmm, i just saw this on TV, I guess I was wrong...

http://www.theinformationminister.co...p?ID=612202372

Mizeru

iTrader: (2)

LOL

Maguire

iTrader: (1)

why do all the stupid threads have the most posts?

'85 GSL 302

Because people like you feel the need to add useless comments.