82sportcoupe

this guy thinks he can take me out this summer, here's my mods

82 sport coupe (pretty lightweight)
350 block
sportsman II heads 64cc
9.3:1 compression
comp cams xe262h cam
edelbrock eps intake manifold
hedman headers and ypipe 1 5/8"
cherry bomb vortex muffler
k&n filter
stock ignition (brand new)
stock stall converter (damn)
aluminium radiator
aluminium driveshaft
electric fan
700r4 tranny w/ transgo shift kit
3.42 gears
will have: new rims for some drag radials and hoping for a better stall converter

what do you think? i dont know much about his car other than it has a twin turbos. how do you think it would turn out????

ZZ42Fast

iTrader: (2)

I reckon hed would edge you out I'm afraid. That tt is a quick car, even stock, and I doubt it is stock.

Race him over 20,000 miles though and watch those rotor seals wear and needing a rebuild. I am a former rotary owner.

craiger

it will b close. i think he will win becaus the rx7tt are fast and have a great suspension. Not only do they take the corners well, they launch hard too! And my Z28 is very fast but I have the common problem of finding traction which may result in your loss for the first .5 of the race.....otherwords, you may be playing catch up.

fly89gta

iTrader: (1)

to be honest...not a chance in hell...unless he like, blows up the motor or something..

85transamtpi

Wheres out resident expert when we need him (rx7speed)?

If you are talking about the 2nd gen turbo II, and it is 100% stock, or has low compression, you'll take him. If there are any mods to up the boost then watch out. rx7speed pulled a 12.5 on a 13b turbo, with minimal mods.

If you are talking about a 3rd gen twin turbo, forget about it. Stock they run 13's...but forget about any of these being stock. A few very cheap mods and they are VERY strong runners.

Theres only one way to know for sure what'll happen...
Race! and let us know what happened

-peace

rx7speed

unless you are pulling about a 13.8 or lower in the 1/4 he will edge you out as far as that goes

and in a street race they are good for 4.7-5.2 in 0-60

this is stock. and to find a stock RX-7 TT though I can't really see.a RX-7 is a car you dont just pick up you look for it and when you find it you are going to mod it. so I would be guessing low 13-high 12 for this car to be honest

you are prolly going to lose this one but either way good race with a good car.

though the motor will last for more then 20k miles

rx7speed

171k miles on my car
seals are fine
only way you will lose the seals that quick is if you dont know how to tune worth **** or you just flat out dont take care of the car.

do you really think any car company will make a car that last only 20k miles?

ATOMonkey

No suspension or fuel system mods? With that combo you're going to move a lot of air. Be careful it doesn't run out too lean.

ZZ42Fast

iTrader: (2)

My friend it is one of the fundamental reasons the rotary was not a commercial success. The rotor tips wore causing low compression and ultimately engine failure. I am looking back to the NSU rotary's mainly (the originals). Owners would go through 3-4 engines over the course of 2 years and claim on warranty nearly crippling Audi (who bought NSU)

I'm sure they have improved substantially now with the new 13B's and improvements in technology. I have a friend that had the tt Rx-7 and he had nothing but problems with it including a minor rebuild after 20k. He bought a C5 instead He does still miss that Rx-7 though.Don't they use ceramic tips or something now?

ChillPhatCat

I agree with Rx7speed on this, the mazda rotarys are pretty reliable... you need to abuse them to require 20k rebuilds... although it's not a 13B, my dad has an '83 with the original 12A rotary, 160K+ on the clock and no rebuild yet, still puts out plenty of power and it don't burn anything or leak anything... the carb was rebuilt, but who can avoid that on occasion?

I'd say the biggest fault the rotary had is that it wasn't widely known... many Rx7 owners actually thought they had 4 cyl engines... just look at the eBay auctions. People claim its a 4 cyl and when they do have the option to claim it's rotary. It's not the most fuel efficient engine out there either.

I am pretty interested in the Rx8 which is due out soon, I bet that thing is going to be king of the rotaries.

rx7speed

the old NSU ones yeah they did not do that well

and I also admit the thirdgens have problems but it is not b/c of motor design.
I know of quite a few thirdgen rx7 owners that are pulling around 80k on the orig motor

the problem on the thirdgens is the fuel system.
a lot of ppl do not know that the stock system is almost working at max as it is and then try to mod the thing without more fuel and well... you get the idea BOOM!!
best thing to do with a thirdgen is get a haltech or some other stand alone and then make sure you have the fuel and THEN do you mods.
your motor should be good for at least 100k

in the club in my area almost everyone has over 100k on there orig motor.

now we have had our problems. I know a guy who has blown 3 motors in one year. I have blown my turbo motor. a guy with a s/c has blown his. there is a firstgen rx-7 that with 230k blew his motor.
out of all of them only the first gen blew its motor b/c of old age. the rest are just tuning issues.

85transamtpi

Interesting...on my '83 rx-7 I had to go to emissions 3 seperate times. The first time they marked the engine as 4 cyl. The second time they put 3 cyl. The third time I went the changed their mind again and put 5 cyl. I think the dual coil ignition system was fooling their electronics. But every time I passed with flying colors.

12 Sec GTA

Weren't all 3rd gen rx7s (93-95, US imported ones) Twin Turbo? I know they have a touring and another type, still thought they were all TT though.. Any online proof?

Thx
-ben

rx7speed

yes all the stock FD (93-95) are Twin turbo
though the FC (86-91, though turbo came out in 87 in the US) are single turbo but called a turbo 2 since the jap had a turbo in the FB (79-85) and the US didn't though
lucky japs

ChillPhatCat

I was just thinking of the japanese turbo first gens... From what I read, they put out 165 Hp and the ir was kinda rough on the tranny, but that had to be a pretty damn fast car... I don't know the weight of the firstgens, I'd guess it's around 2200 Lbs... crazy japs.

My dad's car may be slower than mine, but the sound winding that 12A up to 6500 is just unreal compared to a V8...