Rob Stolz

I just got drive my car today for my first time this spring since last fall, I had put in a knew clutch and full racing beat exhaust(I have to pump the clutch sometimes to get it into gear) however, my car accereates so much quicker. I had a stock 12a gsl 85 and my top end used to be very depressing, around 165-170 km/h. I got to test my car on the highway today and it was still climbing after 190km/h so that was an improvement. Exhaust on a 7 helps tons!

aussiesmg

iTrader: (1)

Bleed your clutch more, you still have a bubble in there.

no_name

Dam That"s Encurage Ment To Get A Racing Beat System!

Dan_s_young

iTrader: (1)

Ya the racing beat system is awesome, but please don't do that kind of speeds (or at least be super damn careful) on public roads...

rxtasy3

iTrader: (2)

nice improvement, just think what it'll do if u port that biotch.

Rx7carl

+1 We need all the 7's and their owners we can get.

blwfly

iTrader: (4)

sweet im just buyin a normal rb header(second hand)for a decent price as a tempory till i go sp then ill buy the one ya got
have fun

should i keep the rest of the pipe as the header or go 3inch?

rbf41182gt

3" is kind of big, i'd just keep the rest of the pipe

diabolical1

iTrader: (3)

my suggestions for the street:
12A - 2.25"
13B - 2.50"

diabolical1

iTrader: (3)

+2

yes, it is awesome, but you need to enjoy it for as long as possible, so don't go ape-****!

blwfly

iTrader: (4)

isnt 2.25 the size of the header thats what i was think of
thanks
srry fo hijackin

rb all the waY

shepski

im using 2.5" straightthrough pipe with resonator and tiny muffler. not RB, but lukey, an australian brand.

blwfly

iTrader: (4)

is it super loud like give you headache matterial??

drunkclever

hows your wonder stearing at that speed? Its about 118MPH. I did the conversion.

blwfly

iTrader: (4)

ohh that would be dangeous like me when my headlights turned off at night drivin 120kph in my integra

Rotary7s

stock ports/street port 2.5

I would run 3 on bridge or turbo

blwfly

iTrader: (4)

well c the thing is latter down the road ild be going turbo but would 3" be to bad for a n/a i know on a piston it needs back pressure or it will just go slower how dose this affect a rotary?

Jeff20B

iTrader: (13)

The only kind of backpressure that is beneficial is when you're getting a massage. It has no place in a rotary exhaust system.

timmybighands

Is that true of ALL rotaries, NA or Turbo? I have to believe that SOME backpressure helps. I'm 100% new to Rotary power, so it's a serious question.

blwfly

iTrader: (4)

damn and i need some back relefe too
wheres a tiny asian girl when u need one

vipernicus42

iTrader: (4)

There is no time when you'd want backpressure on a rotary, with the sole and single exception of actuating the 6port valve thingies on the -SE.

With 12a, the more free flow, the better.

With an -SE with the 5th and 6th ports wired open, ditto.

Stock SE that needs to have good gas mileage and pass emissions, nope.

Jon

blwfly

iTrader: (4)

so would 2.25 be enough of a flow?
and not be to restrictive

Manntis

RB system is awesome.

Proper exhaust tuning requires proper exhaust pulses and the resulting vacuum that aids scavenging. This is often referred to as 'backpressure' as a tuned exhaust helps generate the required pulses. It's quite similar to the Dynamic Effect chamber on the intake of GSL-SE 1st gens and on 2nd gen RX-7s.

Anex 570

If you want real performance, use the RB road race header to a collector then 3" all the way back. If you think 3" isnt any good, then tell the real racers so.

Rob Stolz

it actually contorlled pretty good with the wonder steering