alpine247

who will win

i have an 88 iroc 5.7 camaro stock just recently rebuild the engine vs my bros rx8 have some mods done to it like exhaust,plug wires,k&n he keep saying that i wont keep up with him.so who will win

fire350tpi

Im not sure on the et's of the rx 8's, but from what ive seen/driven

Id say ull get the launch, and when TPI runs out.. hell fly by ~65-70ish~

PimpWillis

iTrader: (1)

IF he can drive it'll be a good race in the 1/4 with him pulling ya, but if not I think you got it. I raced a stock one in my 2.5 v6 mazda mx-6, with an intake and exhaust and he was pulling slightly from start to 60, when we left off. They do have upper rpm horses as they redline somewhere around 9-10,000 so watch out.

IROCThe5.7L

I raced one at the track and he ran a 15.3. I'm not sure of his mph or 60 ft. He could have spun real bad. All I know is I ripped him good out of the hole with my sweet 2.77's.

alpine247

well his rx8 is an auto so it has 195hp with the mods i say 210 or least

alpine247

rx7speed

can you drive?

Darkshot

iTrader: (4)

I raced one. He didn't seem to know how to launch it, I absolutely destroyed him off the line, 2.73 open rear and all. I shut down at 80 and he was still like 4 lengths behind me.

Slipjack

Curb weight on an '05 RX-8 is about 2900 lbs. according to my searches.

Curb weight on an '88 IROC is somewhere near 3500 lbs. isn't it?

If I'm right, that is a 600 lb. difference. Driving habits aside, when it comes to torque the Camaro wins hands down because low speed torque is horrible in an RX-8. But factoring in weight and gearing make it a toss up IMO.

I agree with fire350tpi. With driving skill not a factor, you'd have him off the line but I think he'd pass you up in the end.

Always2Slow

The rx-8 will have the edge over you but if you cant drive doesnt matter how fast or slow his car is race him and find out imo.

alpine247

i should get him since he do have an auto but i have to see..

rx7speed

if you can drive and launch the car, as well as having it run right and he is stock you win.

your car will launch harder, faster and keep it going. auto and rotary don't mix well. much worse when you have a nutered rotary.

just don't screw up and spin the tires, and/or break something.

jcisthechamp05

If you don't roast your tires too bad from a dig, you will absolutely rip him out of the hole. I raced my friends 06 on the street, I immediately pulled a good 3 cars on him b4 I was even out of first and once I hit second I just kept pulling and shut down out about 65 with a good 7 or 8 cars on him. Good luck with the race.

alpine247

haha that my problem loosing traction like crazy even from a 20mph roll still loose traction and idk how my driven skills are i guess good i not going to say perfect but i can handle the car if that means anything lol

Jay

iTrader: (2)

according to what you said here -
you seem to be having some issues handling the car
part of being able to "drive" is knowing how to get the most out of the car without spinning the tires. Practice with different launching techniques and find what the car needs to get off the line with traction.

alpine247

no matter what i do it will loose traction,i have to get it less then half throttle to about 35 then floor it.idk what wrong with my car but it will not grip good at all..

i do know the tires is smaller then what the car is called for i think there are 225/50/16..would that be my problem??

Jay

iTrader: (2)

better tires with more grip will help. Stock is 245/50/16 so having wider tires would help some also.

89IrocZ350TPI

Yeah def get the bigger tires. The shorter the race the better, you should take him good in the 1/8. The 1/4 run should be close. Id say your running in the 14.8 range, and hes probably in the 15.0 range so I hope you can drive.

rocluvr0013

So he has a muffler and air filter? Thats good for what 3 horsepower?

And hes automatic?

Assuming your car is in a good state of tune and you can figure out how to launch it you should win.

alpine247

yeah my car is tune right,just did the air box cut out today and saw a big diff in the performance and sounds bad *** too.i let some air out from the back tires and did some power braking to warm up the tires, now it will launch great with no wheel spin at all..

but yeah still need bigger tire the owner before me went cheap and got smaller tires..

rx7speed

don't know about the 8's but I know the rx7's a muffler is generally worth a little moer then 3 hp. mix a very restrictive exhaust setup mixed with a motor that will respond better to exhaust mods then a piston motor helps.

rocluvr0013

maybe 5 rwhp.

Im sure mazda has come a long way in that department in 10 years. id be surprised if they put a muffler on it that was that much of a restriction.

On the older 7's though id definitely agree with you.

rockit

iTrader: (3)

10,000 rpm red line, j*sus T*tty F*ing Chr*st! yea i can see an air filter and exhaust making a bit of a difference there, thinking that a rotary needs to maintain spinning velocity in order to suck in more air, a free flowing exhaust would bring in some gains by 10k rpms..

yea the renesis isn't anything special in the torque department..

ws6gta89

They are a waste of money and time if you cant beat him you need to sell your car and get a moped because it doesnt matter how much you spin you can still walk past him they are slow cars with a 5-speed then they put an auto in front of it what a joke and yes they are a light car and have decent peak horsepower but there powerband sucks and thats what counts in a street car..imo

rx7speed

and that was one thing also I didn't think about was the different exhaust setup on the motor. the old rx7's it was just straight out now they are shaped more like a normal exhaust on a piston motor. exit then take that turn, but still don't have the valves at least getting in the way. but I'm sure that helps with making the exhuast not so sensitive plus if I remember right they don't have much overlap to do a whole lot of scavanging with anyway now.



ws6gta89 the auto is most easily a dog I would say but the 5sp should be able to hang with a 305 tpi car at least and possibly a bone stock l98 depending on how each can drive and the condition of a l98. so remember what other cars your isulting there by saying they are slow. and the powerband while low by far does not suck. it is a fairly flat power band with some drop off in the higher range

ws6gta89

So we agree that the auto's are junk but you say that a 5-speed should hang with a 305 tpi is thata auto or 5-speed tpi?Because there is a big difference in a auto 5.0 and a auto 5.7 so im going to assume you meant the 5-speed version.Then you said that the rx8 lose's power in the higher rpm's,i thought that that was were they made there power because i know they dont have any bottom end so where do they make there power at then?And as for a flat power band i would like to see a dyno print out of a "STOCK" rx8 to see how flat a n/a rx8 powerband is and no im not trying to be a jerk so if i affend you i do apologize

mjustdie

i was just toying with an 05 5speed last weekend. he ran up on my wife's srt-4 and she pulled him like there was no tomorrow, from a slow roll. she jumped a half a car on him in heartbeat. so i had to taunt him to play with me. when he grew a pair, he tried to jump and grabbed a fender before i hammered the gas. in about a second i had a bumper on him and he backed out. we started talkin and he said his car stock had a 9k redline w/ 238 hp. he was tryin to act like his car was the **** until he realized he was bound to lose! just an idea of what you're up against.

i know 2 people who almost bought one until they test drove them and said it wasn't worth the money, and i have to agree!

alpine247

we race today and wow i thought it would be a good race.had him atleast 10 cars and still gaining but i let off at 120mph,he was doing 95mph

rockit

iTrader: (3)

that's like saying a guy with a rocket launcher can't snipe, wrong application.

sure thirdgens are okay in a straight line, now go take that into a highspeed twisty where his lighter weight and great balance plus a computer designed suspension leave you in the dust.. i'll race an rx8 on the highway, i won't on the twisty's.

the thing mazda did wrong was call it the rx8, the rx7 is a world class car, the rx8 is aimed at people that want something bigger then a miata and sportier then a saturn with the suicide doors. it's only similarity is the rotory. had they given it another name it wouldn't be looked down upon, it's simply living in the shadow of its predecessor.

if they were to stop making vipers, then 7 years later come out with a four door with a v6, v8 optional in the 20-30k range and call it a viper, it would never live up to the name either..

take a v6 2000 ish mustang, we think of them as fodder. in the grand scheme they are reletively fast and share little in common with the v8 cars. they just aren't aimed at the same crowd of people. it's like asking a football player what his batting average is..

atc3434

iTrader: (4)

I'd happly race the RX-8 in the twisties, or in a straight line.

rockit

iTrader: (3)

stock for stock?

atc3434

iTrader: (4)

No... maybe with an IROC or WS6 model, they had a very good stock suspension. I see the point your making, I'm just being a pain.

rockit

iTrader: (3)

it's all good, after the crap i'm taking on another forum, i don't think anyone could make me angry over here. thanks mods, for keeping this a cool website to visit.
by the way act, i usually don't dig gfx-less camaro's but thats a sweet ride! i didnt read your mods till that post but yeah i'd feel a bit cocky next to a rx 8 with your mods as well. ah well all in time.

can't stoop staring at it, your tires are mesmerizing.... huuuuuugee... it's like an iroc's best features mixed with a formula. probably lighter too. sweeeet duuude wait wtf 245's ! that body MAKES those rims and tires! i thought they were oversize but no! same as me!

atc3434

iTrader: (4)

The car is low enough so that the lack of GFX doesn't ruin the car. I've thought about putting on the GFX, but I too like the look of the car as is. Its defintely light w/o all the junk, and its just a base model, so its lighter still. I haven't had it on a scale, but I'll bet its at least a little light than the IROC models. The KDW's do stick really nice, I recommend them to anybody.

rockit

iTrader: (3)

i'd put you around 3200 race weight. my gta is down to 3500.
i'm going to strip the new t/a i just got, full interior but no sound deadening and as few options as i can live with, but i'll still be wa heavier then your car.

i gotta give you props man i really like your car, it's different, understated and the mods list is on the money, exactly what i'm shooting for.

d*mn my motor in your car could almost turn 13's...grrr heavy fricken poncho's

rx7speed

it's cool you didn't offend me

sorry I should of been more clear yes 5spd rx8 vs either 5spd or auto 305tpi or 350 auto. they don't come 5spd on a 350.

rx8's power tapers off a bit near the upper end of the rpm band though through most of the rpm range even the low end it is fairly flat e xcept for some dips where some of the extra stuff kicks in. don't remember what it is all called or what each one's exact function is off hand but they are there to extend the rpm band to help keep the curve flat.

linking to pictures as it will take up less space
http://www.dragtimes.com/images_dyno...-RX-8-Dyno.jpg
this car is stock. auto or 5sp I don't know as it doesn't list.
http://www.deanq.com/stuff/xyntax_dyno1.jpg
assuming this one is an auto. it is both stock and modified if you notice the lines

or if your curious here is a whole thread on dyno's for reading
http://www.rx8club.com/showthread.php?t=77031

rockit

iTrader: (3)

always interesting to see other forums and what other car people deal with. someone told me i ought to meet this mustang guy with a nice 5.0, to compare mods. i had to explain to him that it's a whole different world and that i wouldn't know any of his mods or what they did for power.

350 4 bolt with super ram ported alum l98's 220/225 duration cam and slp 1 7/8's headers, most guys on here can give me a close estimate on hp here.

Sr20 with Turbonetics GT25 ball bearing turbo, spearco FMIC,blitz intake mani., Blitz wires,ngk plugs and trust adjustable cams. bet not many people here know what much of that is.. probably doesn't help that all that's just kinda pulled from my head but you get the idea.

ws6gta89

I know that a 350 never came with a 5-speed i was talking about the 305.I stand corrected on the flat pwerband comment im surprised on how flat it is,but the fact is that it really doesnt matter because it has no f-ing bottom end they should of put that motor in the miata and put a turbo v6 in the rx8 that would have been sweet

rx7speed

you might of known with the 350 and 5sp I just wanted to clarify though as I didn't word it that well .

the low end torque still isn't that bad if you look at some of the dyno's. but one thing also to think about is the effect gearing has with rpms vs speed. they come stock with I believe a 4.444 rear end which would mean at 25mph the rx8 should be pulling higher rpms getting him out of the weaker low end. or even at launch with the short gears like that it isn't that hard to get out of the low rpm range. I believe their 6spd transmission has 5th as a 1:1 also which even more so would help to keep the rpms up and out of the low end range of the rpms so it isn't that bad.
different motors and they set it up to adjust to that.

ws6gta89

Agreed,but they just dont have enuff power and why they didnt offer a turbo version i will never understand i think they would have opened up to alot of other buyers had the car had some REAL BALLZ!!!!!!!!!