91 rx7

iTrader: (2)

now i want to know if what i mentioned before about the car's speed is natural or not and why? thanks

Icemark

because it is a heavy S5 model, and the engine is probably getting low on compression... How many miles are on the engine? and what does a compression check show???

In good condition on a flat road you should be able to get to 130 MPH within 30-40 seconds. Heck, even a reasonably good condition stock 'vert should be able to hit 120 with the top down.

A high flow cat may net you another 5 HP at the most, and a carbon fiber driveshaft will net you a great big 0 in HP. It may gain you a very slight decrease in driveline loss, but that would be very minimal. Remember driveline loss on a FC (and 90% of the RWD cars out there) is about 20%. A carbon fiber driveshaft may drop that to 19-19.5%. But you will never ever ever gain engine power with a carbon fiber driveshaft. Carbon fiber driveshafts gain you less flex and weight to the drive shaft... nothing else.

Well alone where are you getting a CF drive shaft for a non turbo? No one makes one.

wvumtnbkr

Why are you trying to go 120mph? If the car is fast in all of the lower gears, just drive it!

Even on most race tracks you aren't going to go that fast!

eage8

iTrader: (9)

haha, my bad

yeah, for an NA that sounds about right for a ~20 year old car with a questionable engine and probably everything else...

eage8

iTrader: (9)

the air isn't going into the engine, that's what the big filter is for... the air is going into the air pump which pumps air into the cat and an emissions related valve.

91 rx7

iTrader: (2)

it has 183k and i don't know about the compression but the engine has been rebuilt like 2 years ago. i might hit the 130 if i wait for (40s)!!! but at that time some one else will be waiting to hit the 150. will, the website says something different from what you are saying here is the link it has too many goodies for rx7.

http://www.vividracing.comcatalogacp...92-p-9397.html
if didn't work just type vividracing.com

91 rx7

iTrader: (2)

ok but would that small filter effect the feeding system badly(the amount of the air) or it won't matter?

would any thing happen if i left the hose as is unfiltered?

91 rx7

iTrader: (2)

will i am trying to go full speed((160)) it's just in my blood i can do nothing about it.

wvumtnbkr

Retard.

That is all.

91 rx7

iTrader: (2)

thanks but i'd rather be called maniac

clokker

iTrader: (2)

Full speed may be in your blood but obviously not in your car's.
I'd like to see the stock NA that can do that actually.

91 rx7

iTrader: (2)

that's exactly my point. i didn't know that an rx7 fc n/a wouldn't go over 120/ 130
until i got one which i don't regret.

seriously i have driven a craby *** ford escort station 1993 1.9 88hp it has an 80 odometer but guess what it keeps on going and i am sure that it hits more than 120. now when you compare that to an rx7 fc what would you think!!!!

i know the acceleration is fast on rx7fc and i know that i am not suppose to go that fast but i was just trying it see what it can do.

91 rx7

iTrader: (2)

ok for every thing but still no one answered my qyestion if i cttached a small filter as showen to the air pump hose would that effect any thing or it's better to leave it unfiltered.i already have another filter but there is this another hose for the pump?

freemanrx7

You might not have to use the hose at all or cut it really short to fit. Yes, put on the small filter.

91 rx7

iTrader: (2)

ok thanks but i hope nothing will happen later on.

clokker

iTrader: (2)

If "nothing happens", will there even be a "later on"?

Car Zen, FTW!

91 rx7

iTrader: (2)

???

91 rx7

iTrader: (2)

i did and the small hose that is connected with the filter got into the air pump hose smoothly now i just need to get a ring to put around the hose so it wont fall.

thanks man

Sideways7

iTrader: (7)

Edit: double post

Sideways7

iTrader: (7)

I have a pretty heavily modified NA and it barely gets into the 130's. 120 sounds about right for your car. It has an NA rotary, not a V-8. They don't push out high hp numbers.

Not to mention 120 MPH is pretty damn fast.

Also, its a lot more complicated than "adding" a turbo. Read the FAQs for more info. Also, a carbon fiber driveshaft is a MASSIVE waste of money. Honestly, I wouldn't run one if it was given to me for free.

Finally, what you are describing about the speed is normal because 5th gear is there for gas mileage in highway cruising, not for acceleration. No NA rotary will get top speed in 5th gear, its just too tall.

91 rx7

iTrader: (2)

120 mph fast maybe when the way is too narrow like three lanes but on 59 i don't think so.
what's your car's hps?

let say that i did all the stage one modifications; will i be able to get faster and with how many miles (5, 10)?

how about installing a turbo how much would that cost?

and do u have a small filter for the air pump in your car or it's just unfiltered?


do u use penzoil 10w40?

Icemark

well next to impossible to see from that picture how big the hose into the filter is, but that would be the restriction. A small filter like you posted is fine as long as it fits over the air pump intake line.

and if you hit 140 I would be surprised...non turbos top out at around 130-135MPH.

And that drive shaft you posted (well... you tried to post) is $900, and unless you have an actual dyno run showing a RWD driveline decrease of 5% I would be very skeptical. Then toss in the drive shaft is for a Turbo...and you have a non turbo so it won't even bolt in on either end.

91 rx7

iTrader: (2)

you know it's kind of impossible to reach the 140 without getting a fine that's if you didn't even get arrested but it might get the 140 eventhough it's gone take a long *** time.
going back to our main subject; tomorrow i will post apicture for the filter conectted to the hose and next to it so you can see the diffrence.

talking about the drive shaft, how about an aluminum one?

91 rx7

iTrader: (2)

ok i know this is too much, but i still have one more q about the oil pressure.
is it suppose to be on 30 or less like 29 28 when it's warmed up?

and is it suppose to reach the 60 or 70 when i push the gas?

what it shouldn't reach?

clokker

iTrader: (2)

30(ish) psi at idle and 60-70psi at higher RPMs is actually just what the book calls for.

You should confirm your readings with a mechanical gauge and if necessary, replace the sending unit.