Audio Science

As some of you guys know I just bought an 85 se. Well I replaced the distributor cap , wires and plugs. It runs good now. I even put on a Pace Setter exhaust with headers and the o2 sensor. drilled out the cat. This exhaust is dual 2.25 to the cat then 2.5 to the pace setter muffler with dual chrome tips.
I can't get this thing into the 15's. its still running like a 16.2 or so. But the more I drive it , it seems the faster it gets. Now it seems like the exhaust is leaking, So i pull the car up on ramps and get under it and I can find the area where it sounds like its leaking but I can't find a damn leak. Maybe the exhaust pipes are just resonating or something. Also I had expected to see flames but no flames. I can't understand that either. Its basically straight pipe back to the muffler, Its loud as hell. Do you think maybe the muffler is too restrictive? It also has Eibach suspenstion all the way around.
Also theres a whole lot of wiring harnesses throughout the car that don't connect to anything. I've tried to find places to plug them into but nothing. there are 2 by the airbox in the engine compartment one is a 3 wire plug I think its green, the other is a 2 wire plug and I think it has a black rubber boot on it. Anybody know where these go?
thanks

speckamp

the green connector is the test point for your TPS. It's not supposed to goto anything normally. I think the 2 wire connector is a test point for one of the electronic valves that help control the idle. I'm not 100% sure and I don't have my literature near me ATM, but I know they're not supposed to be hooked up.

Launch different, try different shift points, see what you come up with.

The time in my sig is with a really horrid launch, shifting at somewhere around 7500, on a G-tech w/ most likely the wrong drag # programmed in :p

--matt

Audio Science

thanks speckamp. there are also some other wires in the engine compartment right around the same place that don't connect to anything. It appears as though they once did because they look like they were cut but I haven't gone over it good enough to try to match up colors. All the back end interior is ripped out now and I have found several connectors back there that don't have anywhere to go. Then theres some wires that run down the drivers side of the car by the drivers side storage bin that have been cut and disconnected. Maybe this is why my gas guage dosen't work or my hatch release. But what the worst is that my dash lights don't work so I can't see my tach when its dark out. That sucks. I've checked fuses but they are all good. I have some kind of crazy creeking sound in the back end too, sounds like the shocks maybe they need oiled or something. The tranny growls alot too you can really feel it when you downshift. I have a bunch more minor problems too but it doesn't matter I'll figure them out.
I was under the impression that the se did like a 16 flat stock quarter. If thats right how come we are doing worse with mods?

speckamp

As found on http://www.rx7.org/public/1st-gen.html :

From Feb. 1984 Motor Trend article on GSL-SE:

0 - 60 accel: 7.96 sec.
1/4 mile accel: 16.06 sec @ 85.1 mph
60 - 0 braking: 135 ft

I'm going to assume I just can't drag race for ****, since that was my ///FIRST EVER pass

I also have really nasty old, soon-to-be-replaced Mastercrap MR-823's on there, and was trying to be gentle. (the front tyres are so worn the car will actually understeer if I really crank it around :p )

I bet if I dumped the clutch at 3krpm and just hammered it, I could get down in the 15's.

The wires in the rear bin area may be for things like cruise control, or the rear amps, since both of those live back there. Sounds like the harness got hacked up pretty good. I'd say find yourself a Mazda shop manual (check ebay) and look through the wiring diagram. The one in the Haynes manual is serviceable, but sucks major in the read-ability department.

JIMMY54

iTrader: (2)

My GSL-SE is in the 15's, you got exhaust good start. now get the HKS adaptor for your flow meter and remove stock air box and use that adaptor and add a cone filter, brand doesn't matter pretty much all the same. then replace the stock ignition coils to MSD Blaster 2 coils, if you got cash get the MSD 6AL ingition box. Good plugs and wires recommended, bump your timing up. A good set of tires and a sport clutch. All this crap should get you in the high 14's. Ofcaorse lightening up your car would help... spare tire replace it with the second gen aluminum spare or just dump it. Replace the stock sun roof with the lighter plastic clear one. I've on all but the MSD ignition box. Trust me the tires make a difference. P.S. I still have the stock ports on mine.

www.portugesethug.homestead.com/jim.html

speckamp

Assuming the G-tech was anywhere near accurate, w/ my trap speed, I should prolly be in the 15.9-15.6 range. I have a feeling a shitty launch was part of the reason for a slow run.

I'm running the Bonez intake kit from RX7.com, which removes the stock airbox, I've got a set of blaster 2 coils in, and a MSD 6A in the garage sitting there waiting to be installed. I've got some idle gremlins I'm trying to work out at the moment and work has kept me too busy to work on the car too much.

I'm not really setting it up for drag, since I do auto-x stuff mostly, (hence the tokico blue's and tokico springs sitting in the garage next to the msd box ) but straight line speed never hurt anyone

--matt

David88vert

Before I blew the motor, my GSL-SE ran 15.9 with the cone filter and RB header.
Since it was rebuilt and ported, it has not been back to the track yet.

rxseven

[QUOTE]Originally posted by JIMMY54
[B]My GSL-SE is in the 15's, you got exhaust good start. now get the HKS adaptor for your flow meter and remove stock air box and use that adaptor and add a cone filter, brand doesn't matter pretty much all the same. then replace the stock ignition coils to MSD Blaster 2 coils, if you got cash get the MSD 6AL ingition box. Good plugs and wires recommended, bump your timing up. A good set of tires and a sport clutch. All this crap should get you in the high 14's. Ofcaorse lightening up your car would help... spare tire replace it with the second gen aluminum spare or just dump it. Replace the stock sun roof with the lighter plastic clear one. I've on all but the MSD ignition box. Trust me the tires make a difference. P.S. I still have the stock ports on mine.


OK, so where can I get the HKS adapter for a cone filter?

davo22

**** I can only hope for better numbers. whenever I hear se's not performing well I think stuck actuators. I mean they are rather imp. but hell this is the second time I've heard of these poor of times without fixes. so this is discouraging. Well I'll see what mine are soon, with a few changes. But hell NA second gen around hear runsmid 14's, short of being a 91 motor I cannot see the reason we are so far off. I mean of course the NA has exhuast but how much. Can't be more than some have hear. ahh well. Lets hear some good figures.

Felix Wankel

My -SE ran a 10.4 1/8, which is roughly a 15.9 1/4. It was all stock except for a crappy straight pipe that was on it when I got it, and some bald *** Toyo Proxes tires. 155K miles on it too.

Audio Science

Hey guys, Well today alot of my buddies opinions of an rx7 changed. I raced a 96 civic with a sohc vtec he has an aftermarket exhaust , K&N and has his timing advanced. I beat him by about 2 to 3 cars in the quarter. He was pretty saucy about it. I had to race him twice before he would leave me alone. He did a 16.2 at the track so I figure I might be into the high 15s now.

I also have a buddy that has a dodge spirit 2.5 turbo that runs really good. He has raced most of the imports in town and hasn't lost to one yet. Well tonight he did. I beat him by a car. That was a sweet victory because he is constantly talking **** on the 7. I'm guessing he feels pretty stupid tonight. I figured he would make up some kind of an excuse but he didn't he fessed up pretty good. He didn't want to race twice.

There was also a 2000 Camero z28 that was dyno'd at 380 and running a 12.6 on street tires there. He wanted to race too but i figured why beat my car for a sure loss and told him i'd quit while I was ahead. We both knew it was a senseless race.

anybody ever race a talon turbo?

Rotor13B

i've raced a eagle talon turbo, BUT, I have a 13B engine in my 83' with full rb exhaust and intake w/ dellorto carbs. I beat the talon by about a car and a half the first time, and about a car length the second time. it was close but it can be done. It all depends on your launch and how well you can grab gears. i took off the stock shift ****, (sucks) an replaced it with a b&m T-handle, lets you grab gears real good. (instead of throwing it into fifth by mistake, lol).

speckamp

Well, I'm pretty sure that my poor drag skills had something to do with my "slowness" since I just pulled a 16.36 @88.?MPH while on the phone with my ex girlfriend, barely keeping the car straight and shifting with only one free hand :p

Now maybe tomorrow night on my way to work I'll pull off a 15.9 or something cool like that.

--matt

Audio Science

Man am I pissed off. Tonight I was on my way home through town and a guy in what looked like a couger not the newer body style. Pulls up beside me and starts reving. The road is soaked I spun my *** off through 3rd gear and started pulling on him but then he hit the brakes and had me by like 2 cars. On a dry road he would have been done man. I just can't bring myself to count that as a loss. I pulled up beside him and yelled "Catch me on a dry night" He laughed at me and took off. So stupid me trys to catch him again and when I hit 2nd I lost it and went sideways, totally spunout. I'm going to get that bastard on a dry night and make him feel like a moron.
This is really the first rearwheel drive car I have ever owned. I have a stealth base model (front wheel drive) and wet road really didn't hurt my acceleration. I'm amazed how little traction I get on a wet road in the 7.

speckamp

yeah, the car is real tail happy if you break those rears loose. I guess that's just something ya gotta get used to. Good thing you didn't hurt the car spinning. I'd hate to show you what the driver's side rear quarter pannel of my car looks like ATM. Stupid me letting the rear get out from behind me at 105... yeesh, by far the most...upsetting moment of my life in recent memory.

--matt
(cursing the MR-823's and looking for some comp t/a ZR's.)

JIMMY54

iTrader: (2)

to RXSEVEN

you live in the states, I bought mine from JRP they are in ontario, www.jrponline.com that their website. try looking for an HKS dealer around you. the adaptor attaches to the air flow meter. it cost me $40 canadian which is probably $4 american. I could try to look for the part number if that helps... just PM me if you want.

Max7

I think tires also make a big diff in the rain, my Nitto Drag Radials are amazing in the rain! They grip far better in the rain, than my winter tires do in the dry. but at any rate, trying to race in the rain is just asking for trouble.

Now lets all get to work on them 7's, I want to see everyone in the 14's by the end of the week

Audio Science

I'd imagine breaking loose at 105 wouldn't be only the most upsetting moment of your life but its got to rate up there with the scariest. I've lost it a few times in the last week but this is the first time on a straight away. Its pretty amazing how helpless you are when your turning a corner at 60 and the *** end lets go.It seems I can handle it if I can catch it fast enough but everytime has been on wet roads and once you hit the point where your going more sideways than straight the best thing I can think to do at that second is just to hold on and hope I stop soon.

But I that won't happen anymore. I no longer accelerate through corners on wet roads. I can't imagine one of these flipping. With these Eibach springs the car doesn't roll at all. If you push on the side of the car it looks like it moves side to side rather than up and down.

I've heard of those Nitto's. The tires I have now are hard as hell. I think thats the main reason I'm having so many problems. I think I'm going to pick up some of those nitto's. Did you notice hooking up a lot better on dry roads?

Max7

Very much so. Also they are alot quieter when cornering, thus I draw less attention from cops
And when I go racing I don't have to change tires
AutoX/Road Course/Drags
Granted they are not as good as my Kuhmo R's were
But the tradeoff is worth it to me

Zulu

I ran a 15.4 on the track spinning my winter tires into 3rd....

Stupid winter tires...


street-port, k&n drop-in filter (no point in going to a cone, teh AFM is the limiting factor, not the airbox), racingbeat header & 2 1/4" exhaust

I suspect mid 14s with real tires, maybe a 13.9 with slicks

jr69187

hey i just got a little 12a wanna run em? I mean it is pretty slow. And it is all stock on the outside.

jr

jeremy

iTrader: (1)

your trap speed will be higher with the gtech. it takes speed at the quarter mile mark, where as tracks take an average of at the 14 mile mark and a certain distance (i forgot) before it.

if you get the chance ditch the pacesettter and go with rb. i've heard quite a few on here say the pacesetter doesn't add too much. i can at least vouch for the rb on a 12a. james and i have similar cars, an 80 and a 79 respectively, with the only difference being he has rb headers. totally different car. i also wanted to say good kills. sounds like you aren't doing as bad as you thought.

max7- very true. super sticky tires don't hardly squeal if they actually squeal at all. this is very erie at first becasue you feel the car starting to slide but you don't hear anything so you doubt yourself.

suntzumd

Hmm, that's why my seven is a dry sunshiney day only car. But it came with some POS roadhuggers that I'm saving up to replace.

gump

Hey now what is this stuff???? You mean to say that the '86 had a aluminum spare and it's 4 bolt?!?
I also never heard of this plastic clear sunroof. I've got the metal one, would like to have a glass one, but is the plastic one a Mazda thing or aftermarket????