Why not? With some weight reduction I got my sport down to 14.4 on stock ports. It's not too difficult! Hell, I've seen N/A's in full trim running around the same time with just some better intake manifolds & exhaust.

 

Your saying that the clutch slipped off the line...then it engaged...and you had enough power, and space to get to 4th gear???

Wheres RETed so he can put that colorful BS gauge up.

 

Yeah, what were you running full stand alone ECU, etc...

I've got "better" exhaust and it didn't drop my times down to a 14.4 - yes I do have a pace crapper exhaust manifold, but I seriously doubt the RB Header would net a full three tenths off my time just because its superior in design.

and full street trim, isn't weigh redux, it's all your normal things like A/C, P/S, full interior paneling, no sound deading material out at all...ie how it would come new off the floor, not your A/C, P/S, sound dead material taken out.

Sure, I could pull off everything in my car, hell I could chop off the roof too, that would be the best weight reduction - not. I'm not taking ANYTHING off my car unless it's not needed, or if it's not in use anymore (for instance the emissions system was deleted, just because it wouldnt work with the supercharger.).

 

'88 GTU, 50mm IDA TB, stock ECU with an SAFC, 12lb flywheel and a 6 puck clutch, in 'full trim' (as in full interior, all options it came with, only emissions/cats/spare & jack removed) could pull off mid 14s consitently.

My '87 sport one-wheel-wondering it could manage with a bit of weight pulled out on a tired old intake setup on walmart tires.

 

Yeah, IDA TB...lol less than stock by all means.

SO, in theory, since you were able to run a 14.4 with all of that, if I were to ptu all of that on my car, I could high 13's on stock ports with the supercharger...

 

Except you wouldn't be able to get the IDA (or the manifold) on with that blower, you could probably use the side draft TB, but it doesn't do much good in that scenario. But then again, when have we ever been talking completely stock except for above with the 15.2 thing? It still was less than the blower for me!

 

Where was your afm?

 

Passanger side of the engine bay, I had a simple Y style manifold that sat ontop the IDA that merged the two together, AFM was placed between, then had a CAI up under the front of the car.

 

I really don't care what that NA runs.


-Ted

 

Bust out the calculator man.

2.1 from a 2.23 is .13 seconds off, meaning a best of .26 off the top end, not .5

Regardless, that's a rule coming from the land of high torque cars, and is far from being universally applicable.

I'm happy that you're happy with your times. If you're enjoying yourself, that's what matters. You'd enjoy yourself more with HP though.

 

Somebody did the math for me, I dunno how, but he's running 7-8's with a huge chevy nova with a blower twice the size of my engine so I trust him.

I'm very happy with the power, I can knock your head back on command if you're in the passenger seat - even if waiting on it...my brother complains because his neck hurts after I get done having a spirited drive.

I'm trying to get it on the dyno, I forgot to mention I had all my tools in the back of my car (suprised I passed tech inspect), spare tire, etc all in...no weight redux at all.

I removed the spare, all my tools, and am going to go back when the weather, and wallet is right and also get it dyno'ed for ***** and giggles, I'm guessing around 190 RWHP with the trap speed and stock weight + me (160lb's) not tools included with some calculators I've found scattered throughout the net.

 

To click a 1.8 you're going to need a LSD and probably something in the way of replaced struts, as well as some wider stickier tires. Knocking off .8 of a second for shifting will vary quite a bit, there's no way to tell how well you shifted other than being in the car with you, so guessing at that is kind of a no-win situation.

 

I shift faster than most people, but then again, I don't power shift it either (don't let off the gas but clutch in/out) as my clutch is already worn and I'm sure on it's last leg towards holding any power.

 

Your numbers are best case there, but not outlandish.

Your HP estimate sounds pretty right on though, I'll wager ~181 HP.

And if he whines about that hurting his neck, he needs to get in the gym.

 

 

Glad to see you got her running. Talked with you back in 2005. Time flies. Especially at my age.
Good base run. Lots of fun. I miss the Camden. Say hi to Andy Atkins.
Good luck with your project. Good work, way to go.

My best 13.6 @101mph 1.9 60 ft. (2100 ft elevation, 100 deg F) with:

Large street port by Nick Van Nugteren
TII rotor housings, NA high compression rotors, Mazda Comp Race bearings
Weber 48mm side draft system
Jacobs Pro pack and prototype coil
Racing Beat true dual exhaust system
Rotary Performance Racing fuel pump
Mazda Comp Racing Radiator
Black Magic fan
Custom 4.88 gears by Speed Source (Sylvain Trembly) w/ Mazda Comp limited slip clutches
Mazdatrix short shifter
Mazda Comp engine, trans, front diff mounts
Front Energy suspension bushings
Front Cusco lower suspension bar
Mazda Comp Strut tops
Mazda Comp Delrin rear bushings, rear steer eliminator and Camber adjuster rod
Cusco rear strut bar
Camden Supercharger
-7 pulley (9-11 psi)
Rotary Performance Bonz Street/Strip clutch
Mazdatrix driveshaft
Ground Control Drag Launch kit #280 rear
KYB AGX front/rear struts
Moroso Battery Box

Chrome/polished front end
Percy's Speed Glass Lexan front/rear glass
Speed Machine Performance carbon fiber sunroof (2 lbs)
Car lightened up pretty good back then but still had the dash, carpet and factory glass side windows w/ door panels
MT ET Street 26x10.5x16 around 20psi


https://www.rx7club.com/rx-7-audio-visual-lounge-143/1987-supercharged-fc-457752/

 

I've got a post of my timeslip on here for a 15.2 at 89 with a 2.1 60ft and that was in a stock port na with a cone filter and rb exhaust. No timeslip yet but with my newer mods listed in my sig i'm sure i'm in the mid 14s. can't wait to see what i'll do with a better rear end ratio. btw is it just me or a supercharged fc's usually kinda weak?

 

I ran 13.98sec @102 mph on street tire with a 1988 gxl n/a street port, home made exhaust and around -200 lbs. Its a summer daily driver.