rx7power

I have a '90 GTU with RB downpipe & presilencer, and apexi n1 dual exhausts. I know my clutch was slippin a bit, but i was only pullin a best of 16.4@85mph. WTF is that? Is it cuz I don't have a cone intake? Well at least I know I need a new clutch. Should I get the 4.30 gearing while I'm at it? Anywayz I'm just venting because I thought it would at least be faster than my 97 integra that I used to own ( I had the non vtec with headers,exhaust & intake and pulled consistent 15.6's@87) What should I do?

I also had mad wheel hop, is that supposed to happen with a RWD? I also don't have a suspension.......yet, just the stock 12 year old spring and shock combo, ugh.

Thanx for the future replies.

HoNdAh8rRx7LuVr

An intake w/a nice cold air box would be good for some added h/p,not much,but some. As for the wheel hop,change that suspension!!!! 12 year old shocks and springs aint doin' u much good at holdin' the road.All the sag in ur springs is most likely causing the wheel hop,not stiff enuf to hold the wheels down.
Thats the best I can do,hope it helps a 'lil.

COYOTE-1

I ran a 16.4 with my 86...I had alot of wheel hop too...all through 1st gear...it kills your time bad...the guy i raced had a 88 rx-7 and launched good jumped a car legnth ahead of me...but i still caught him and won...the launch is so important...from what i understand the wheel hop is from bad struts and springs...they are not holding up....i also broke my out put shaft on my rear end because of this wheel hop...so be careful...if you want you can let some air out the tires...and it will hook up better with less wheel hop

Peace
Buddy

MazzyMan

4.3 final drive is nice but the darn revs can kick to red super fast if you are not careful....especially when the engine is tweeked!!

Agent_D

iTrader: (2)

16.4 with those mods?? holy bajesus, somethin is definitely wrong, a BONE STOCK 86-88 can run constant 15.9's in the 1/4, this is assuming your at sea level, a guy posted a while back in the kills section, he ran a 15.8 in his bone stock 88 n/a, check the clutch and most importantly, practice the launch of your car

dwillms

you your probably running a little low compression and you probably need a good tune up

Poindexter10thae

iTrader: (2)

You need to take care of the Wheel hop(new rear struts and an alignment) and you also need to practice launching and driving, no offense, but stock 89+ n/a's can easily pull high 14s and low 15s. Your clutch may be slipping more than you know as well. get some good rear tires too

t_mak@mail.plymouth.edu

16.4 sounds right with those mods. I did 16.7 with the cats gutted. RB pipe do flow better. Just look at your trap speed, it is normal. For some reason 89-91 cars dont do so well in the 1/4 mile like the 86-88. I really think its the extra weight we have on the car. It really kills the 60` time. Get some 205/50/15 and 4.3 gearinig will definitely make it rev faster. Cone is not really nesscessary

t_mak@mail.plymouth.edu

Stock GTUs did 16.7 in Road and Track. Dont look at the hp and weight #. Find a 89-91 NA that do 15s without mods

rx7power

I'll focus on getting new suspension parts, then I'll look into getting a new clutch. What clutches are good for street/strip?

BigWoogie--damn I that sounds great, now I got something to work for. I thought I was okay at driving FWD, but RWD is a little different. What RPM do you guys shift at anyways.

Poindexter10thae

iTrader: (2)

RWD COMPLETELY different than FWD, it is a matter of practice and fine tuning of what you have, you will definitely drop your ET's as soon as you have some solid suspension, without having to add any mods for more HP.

I shift at 7500-8000 in my 91 N/A. my mods so far are as follows(I seemed to notice that there was no gain in my car when shifting at 8500+, yours will be different)

91 N/A
RB header, presilencer
6 ports wired open
KYB AGX struts all around
RB Sway bars front and back
Nitto 555 on all 4s

rx7power

My wheels are SSR TypeV's 13lbs rims with kuhmo ecsta supra 712(205/50/16) are those okay? What tire pressures should I try next time?

Oh yeah www.fuckenfast.com has your option videos. I got like 4 of them so far, it's some good stuff. Make sure you buy the drifting ones cuz not all of them have drifting footage. Personally I think the drifting footage is better than the time trials, but you may think otherwise. With that being said I'm sure you'll like those videos regardless.

Poindexter10thae

iTrader: (2)

I love drifting more than anything. I already ordered 2 videos!

As for you tire setup, that is excellent. Stock tire pressure is 30-32lbs, I would try from 26-28 in the rears next time you hit the track

Where did you get those rims at?

soul assassin

turn up the VTEC!!

t_mak@mail.plymouth.edu

Well 205/50/16 isnt really the optimum size for the FC since it will make the speedo off. 205/55/16 is the size you should really get, but if you go for straight out performance, get 205/40 (if htey make it) or 205/50

Codey

I normally launch at ~4300 rpm with no hop and just a little squel of the tires. Currently I shift at 8500 in my '89- balanced engine. In my '87 that is stock, I shift at 7300 rpm. Wheel hop will absolutely kill your 1/4 mile times.

Poindexter10thae

iTrader: (2)

Actually 205/45/ R-16 is the ideal. It is the total wheel diameter(rim+tire) with a 16 inch wheel and a 205/45 R16 tire you have about .4 inches less than stock diameter, 205/50 is fine, wont hurt nothing


Hey soul! had too much saki??

amemiya

man my n/a ran 15.9 with the same modes you have and I am at a mile high. it would run 14.9 at sea level.

RETed

Get new rear shocks - your old ones are no good.



-Ted

t_mak@mail.plymouth.edu

BigWoogie, 205/55/16 is the plus one size for NA and the stock size for turbo. 205/45 is definitely not a normal size, ideal for acceleration maybe.

If you have cars with speed sensitive steering or AAS, you can throw things off. Also the odometer, and among other things. The choice is yours.

vosko

iTrader: (4)

my GTU ran 15.98 @ 86mph with headers, hiflow cat and intake

rx7power

damn I didn't think I'd get this many replies, thanks alot, you guys give me hope when I go back. Hopefully I'll do better next time, but i'm more into SCCA and drifting since we have each event 1 - 2 times per month.

bigwoogie-we have a shop here that carries these rims, but I bought 'em used off some guy. When I take a picture I'll post 'em up. All I know is that we have a shop here that deals with SSR of japan and gets all the good shet from them.

amemiya- for real! damn I gotta start practicing

2DoritosOnAStick

LOL, you are definately dreaming. Stock series 4 turbo IIs have a hard time running 14's, and under perfect circumstances will not get better than 14.80s. A stock N/A is a 16 second car, sad but true. Open up the intake and exhaust will yield impressive increases. With your mods you would be running at least low/mid 15's, with a good launch. Inspect the car, and have it compression tested, or throw some ATF in there.

t_mak@mail.plymouth.edu

Just a dp and mp and a cat back will not do low 15s, more mid 15s.

2DoritosOnAStick

I misread sorry. I thought he was running a RB header. DP/MP is mid/high 15s. I've done tests to prove this with my friend's mint N/A running DP/MP/N1, Intake, clutch and lightened FW... It's about as fast as a stock GS-R under perfect conditions (15.5).