si_mekanik

Hi, I'm very new to RX-7's. Well I did help Toretto install 4 NOS bottles in his RX-7.... anyway.

There is a kid around our area with what appears to be a 1st Gen RX-7. It's kinda beatup, and has one loud *** muffler. If he revs up really loud it blows flames. From what I understand he is pretty stock. Some people say he will beat a ton of people in a race, but I don't know. I probably don't have enough ***** to street race, and I just got a stupid left turn ticket which landed me 3 points, so I can't really afford to race.

My q is, provided this RX-7 is stock, which i'm quite sure it is, what can they run in the quarter? I have no idea on the engine, but i know it's a manual. Let's assume it was the most powerful stock engine? I have a 99 Civic Si with I/H/E clutch, VAFC (not yet tuned until i get to dyno), and cam gears soon (not yet on). I plan on doing a 50 shot of NX later, which i'm sure i'll win then, but just out of curiosity, what do you guys think?

Sorry if this question has been asked. But I'm learning about the RX-7.

adssoccer

civic huh? interesting. so you're planning on selling that si to go for a nice rx7 aren't you. im not a big fan of civics, or their drivers, but i'd suggest you do a search on 1/4 mile times. i've seen quite a few of those sorts of posts in here.

Felix Wankel

You'd have to find out what the mods consist of. It can run anywhere from 13's to 17s.

Jerm982

Ahh yes a Civic Si mmmm in metalic blue


Oh err sorry got sidetracked

I used to be a big Si fan myself yea yea i know even though its a rice rocket with a torqueless boinger motor its still sweet little car.

Anybody know what they run stock on the 1/4

Jerm982

Hah answered my own question...

Civic Si

0-60 7.4 seconds

1/4 mile 15.7 seconds

si_mekanik

This 1G RX-7 is pretty stock except for an exhaust. It may even be just a muffler! I search, but all I can find are modded RX-7s. No one can give me an inkling what it can run?

mar3

iTrader: (8)

If it was streetported, you could not tell by its idle or by looking at the engine. A streetport will run low 16's, possible mid 15's with a stock or mildly massaged Nikki. It will look absolutely stock. If it really is a bone stock GS, you'll beat it up easily with the skateboard even w/o juice...a well-tuned GS with everything on board as it came from the factory will run high 16's...if the owner is a maniac like V8kilr, you're in trouble...he's almost into the 13's with a stock block but has had his rex undergo a serious weight loss program and runs a spool...BTW...you surely meant you had installed a single nitrous bottles 4 different times into yer buddy's RX-7....there are too many seasoned racers in this Forum to have to endure the thought of 3 useless nitrous bottles taking a ride in someone's hatch. Even full-on 6-second Pro-Mods run two bottles max...

peejay

I've seen a stock port 12A car running 15.7 with just a RB exhaust system and carb rejetting. (This was when WT's best time, with street port and open headers, was also 15.7. ) What does this mean? TUNING IS ALL-IMPORTANT. After seeing him run, I rethought my combination and found another 6 tenths

I also saw a Civic Si (a genuine DOHC VTEC Si) with a 17.x dialing. What does this mean? THE DRIVER IS ALSO ALL-IMPORTANT. A fast car is nothing if the driver can't drive it!

peejay

My SP ran low 15's with a dead stock Nikki, and most likely would have gone much faster if I spent more time fixing my intake manifold and tuning problems.

Also, it did NOT idle like stock! It idled like a BP when cold, like a narcoleptic BP when hot. (brrrrapp...... brrrrapp..... ) I was quite pleased.

mar3

iTrader: (8)

From what I've gleaned in this Forum, your times and experiences have always been a tick ahead of everyone else. This guy is looking for expected times from your normal joe in the street, not a razor like yourself!

Jerm982

Toretto eh? wasn't that vin diesels character in the fast and the furious.. and didnt he drive an RX-7 with 4 sneeky pete bottles of NOS under the passenger seat... seem a little suspiscious to me...

mar3

iTrader: (8)

Now I get it...thanks for the movie tip!

jeremy

iTrader: (1)

he wouldn't be blowing flames if it was just a muffler. the cat has to be missing so its probably open pipe to the muffler.

si_mekanik

Hey thanks guys.

Yeah on Friday and Saturday nights there is a big empty parking lot where a lot a decent amount of cool cars hang, but there are mostly ricers there. There is a Kia Rio with tiny wheels, neons, and hood blingers. He peels out and guns it all over the place. It's funny as ****!!!!!

Yeah, so a bunch of people get around his 1G RX-7 which from what I understand is mostly stock. He revs up really really hard and loud and it sounds kinda mean, and it can blow a flame or 2. It is beat up, and he had a best buy subwoofer box in the back. Besides exhaust, i think thats it.

But he told some people he will race any of our Civics and will beat them. This other kid who is neutral, and just hangs around said he would surely beat all us Civics (the N/A mostly stock ones) which may be true.

Well guys, I think I may offer a challange to him, and see what happens. I want to race him, maybe we'll hit the track or something. But street is so much more fun If I get a good launch in my Si, maybe I can get him in third gear, as thats where my car seems to pull. I'm getting some new tires on Wed, because my stockers are done for. Well see what happens.

Thanks

adssoccer

now you've got us interested, tell us who wins!!

peejay

My '80 blew flames when it was dead stock Gotta love a thermal-reactor emissions system. (Pop pop pop pop. POP pop pop pop. BANG! pop pop... )

peejay

Aw don't make me blush

Really, that time was related to 4 things - better fuel tuning (better fuel pump & lots of trial & error), free-flowing exhaust (open headers), removing weight (the car weighed 2400lb with me in it), and learning the car (comes with the trial and error of tuning!).

Anybody could do it, really. The problem is, to easily run open headers you need a dump pipe, which REALLY restricts ground clearance (grinding and awful noises on most driveways) and most people aren't willing to live with that. Heck, I'm not too keen on the idea. Also, the tuning requirements change drastically between full exhaust and open header, so you either need to tune and de-tune the car every time you go to the track, or live with something that gets less than optimal performance and economy on the street. I'm not too keen on that idea either.

By my best estimates the engine only ever made 130hp at the flywheel. (My modified intake manifold was REALLY hurting power) In other words, if you could get a GSL-SE to weigh 2400lb with driver, and that driver practiced for the optimal launch and shift RPM (and I don't think I had that down either) then you will see a low 14 second, even maybe a high 14 second car. Getting a 12A to make 130hp is also somewhat trivial, even WITH a full exhaust.

I hope to get this decidedly heavier car to run low 15's with an unported engine. If i have to do open headers again I will, but it'd be cool if I could do it in street trim!

Put it this way - Pro7 engines put out 140-150hp at the flywheel with stock ports, stock 81-85 intake manifold, and the stock exhaust manifold. For a street ported engine with open headers to only make 130hp is, to put it bluntly, pathetic. Quite noisy and a ton of fun to be driving "that obnoxious little rustbucket", but still pathetic. I know I can do better.