I am driving a 87 RX-7 without a turbo. how would I fair against your TPI 3rd gens. in a street race. my car for the most part is stock. 170k on the motor with nothing more then a header and intake.


if I can get traction (IRS sucks for launching) I can pull 0-60 in around 6.4-6.7

there are a lot of camaros around here and I am getting tired of frying all this riced up honda stuff. though few are worth the race.



------------------
imports are cool - ricers suck
ICQ 4116192
AIM RXspeed87
Got rotary?
header, intake, ported TB.
soon to have ported intake, lighter rotors,ported motor and a T-66

 

if you could also
post things I coudl expect from a TPI car including HP,1/4, tq, wieght stuff like that
any info you have would be helpfull

lets see how long it is before I get called rice

 

Its depends on exactly which TPI car u would be running.

------------------
89 RS
STILL Looking For:
An 87 IROC-Z28 350 TPI

Yeah I have an RS, but I want an IROC-Z!!

 

well there are quite a few of them around here
I am trying to get as much info as I can on any of them

know a few are modded but mosst seem to be stock

 

well your typical tpi 350 runs from 225-245 horsepower, torque maxes at 345 i believe, in good tune a stock runs about 14.9-15.4, however, most are somewhat high mileage and aren't in as good as stock form, expect most to run in 15.5-16, though more towards the lower end. the ones that have free and low cost mods, ported, chip, exhaust etc. expect anywhere from high 13's to low 15's

Typical tpi 305's run anywhere from 190-220 horse, and i believe up to 245 lb-ft and dependiong on trans, gearing, etc expect fom high 15's to mid 16's stock. the biggest factor in these performances are i think the gearing, many came with 2.73 highwaay gears. these are the slowest. mods will catapult them down into mid 14's if they are done properly.
any others are likely low 16's or slower, however mods can drasticlly improve these vehicles as there are many different ways to add power to carb cars, and tbi cars. these tend to be switched for holleys often enough to make these possible 13 sec contenders. oh, and the tpi cars i believe had to be z28's or iroc's, but im not sure about that. chances are an rs will be tbi or carb. the v6 cars and 4 cylinder cars, the very few 4 cylinder cars, are 17's or worse without severe mods. one car i will warn you against, although its unlikely youll ever run against one, is the 89 (only i think) TTA, or turbo trans am, a firebird with a grand national 3.8 turbo v6 that runs 14's out of the box, but you can easily tweak them into the 11's or better. hope that helps. oh, and an rxy is one of the few imports i really like. somethin about that 9000 rpm rotary...

 

305 TPI's had around 285-290 ft/lbs of Torque and the 89 Turbo Trans Am is good for 13's bone stock. Or if you happen to run into a 91-92 Firehawk they are good for low 13's stock... Expect anything from low 14's to low 16's depending on state of tune and level of mods...

Jess

 

My friend has an 87 RX-7 5 speed. His motor is in good shape and has great compression, but pretty much stock. I drive a 85 Trans Am, with a 305tpi/auto and I beat him every time. My other friend with an 89 turbo II 5 speed is pretty even with me, but most of the time I beat him too. I run a 15.0 @ 91.5 and my engine is mostly stock. I would watch out for the tpi motors, unless you plan on doing some intake porting on your 13B.

peace

 

running about 15.4 myself though once I somehow was able to get a 15.1
what about in a freeway race how would I do.


should be able to take on a 4th gen v6 no problem though right?

[This message has been edited by rx7speed (edited November 01, 2001).]

 

Well, your hp peak is around 6,000rpm, so you should have an advantage at higher speeds against a tpi motor thats hp peaks out at around 4,000rpm. However your gears are pretty short so it should be pretty close with a 305, a 350 would be a different story. As a side note by buddies 89 turbo II is loosing compression , and hes not the best driver. I would seriously look into intake porting if I were you. It is the same as swapping heads on a V8. All you really need is the ability to take apart pull and take apart your engine, and grinding tools. I've seen a few fast N/A 2nd gen RX-7s that have only done slight port work and exhaust.

peace

 

not going to port the motor yet. and yeah it is like porting the heads on yours but also like doing a cam swap at the same time.
just going to port the intake manifold for now.

my car has a few mods and quits pulling around 7500rpms as of right and goes nice with the 4.10 rear I have
the gears on my car top out with 1st at about 35 mph 2 at 65mph 3rd around 89, and forth well never toped it out.

did not think I could hang with a 350 myself though and being without a turbo I doubt it very much for now.


so guess it is time just to find out how I would fair against one by taking one on
how about a 4th gen v6 though. should they be any issue or just a easy kill?

 

"well your typical tpi 350 runs from 225-245 horsepower, torque maxes at 345 i believe, in good tune a stock runs about 14.9-15.4, however, most are somewhat high mileage and aren't in as good as stock form, expect most to run in 15.5-16, though more towards the lower end."

LOL, that would have to be 1 messed up L98 or really terrible conditions to run 15-16's, let alone 15.4 stock. L98 IROC's usually run from 14.2-14.6 stock. The GTA's a a little slower more like 14.4-14.8. Both cars being stock and in good running condition. But there has been cars of each that have put in amazing times, like 13.8-14.1. I know of a 92 Z here that ran 14.1 stock and an Formula that ran 14.2 stock, both L98's, there are others too.

------------------
89 RS
STILL Looking For:
An 87 IROC-Z28 350 TPI

Yeah I have an RS, but I want an IROC-Z!!

[This message has been edited by IROCZTWENTYGR8 (edited November 01, 2001).]

 

Yeah RX7, if u are in the 15's u should beat a stock V6, I don't really know what a modded 1 could do though.

[This message has been edited by IROCZTWENTYGR8 (edited November 01, 2001).]

 

3.4- yes
3.8- possibly, they can run low/mid 15's stock, and for under 1000 can do high 13's. Those eaton's go for pretty cheap on ebay, usually for ~500 bucks. Add a 3 1/4" pulley, cold air, and exhaust and they are running with LS1's.

 

RX7
Intake porting should do you well. The 6 port motors are kind of a B*TCH to port anyway. As far as 3.8 4th gens go, you should beat them without too much problem. As someone said earlier, they CAN be made fast, but the important thing to remember is that almost no one who drives one would ever think about modding it. Most people who want any sort of performance would just buy the V8 car to begin with. I had a hard time trying to find one that would actually race me, untill My friend took his wife's car out with me. If you really want to compete with 4th gens (LT1, LS1) pick up a 20B, a bridge ported 12A (chainsaw soundin'), or some nitrous (cant really hurt wankel) and have some fun

peace

 

damn my car

was messing around today with the gears and seeing were the top speeds come in. these are rough est.
1st around 36
2nd around 65
3rd around 95,
4th around 130
5th well um around 130/140 I was booking fairly well and saw a car comming so I had to slow down..

car was still pulling fairly well though at those speeds even in 5th gear

though the car has stock 4.10 in the rear and I was shifting around 8000 rpms this time around found out still pulling till 8000.

was pushing a lot harder then my friend in his 86 firebird with a carb'd 305 at those speeds.

so a TPI 305 would prolly be a good race? but a 350 would waste me. and what about the TBI I ran one once and had him by a bit but I think his car was old and worn.
more of curious how would fair in a street race and rolling start runs. rather then fixed distance like a 1/4 though. just more of trying to get my *** far enough ahead of him we know who would have won

------------------
imports are cool - ricers suck
ICQ 4116192
AIM RXspeed87
Got rotary?
header, intake, ported TB.
soon to have ported intake, lighter rotors,ported motor and a T-66

 

oh yeah what are all these codes like l98 and lo4 and stuff like that

I know they refer to the motor itself but what do theyall mean?

 

L98: 350 TPI
LO3: 305 TBI

U won't beat an L98 dude. If u are in the mid 15's u probably wouldn't be able to beat a 305 TPI also, especially the 5-Speeds. A TBI could be a good race maybe.



[This message has been edited by IROCZTWENTYGR8 (edited November 03, 2001).]

 

talking for either highway or street race not a drag race.

 

I wouldn't say that he wont beat a L98, but he SHOULDN'T beat one. If the L98 gets a way bad launch and spins then it is possible. Hey, Ive beaten a L98 with my LB9 and RX-7's running pretty much the same times as I am. The car I beat was an 89 Formula 350. Why? I dont know...he didnt spin his tires. Anyway RX-7, come out to chicago and we'll race.

peace