beamo76

should i fit a dump valve to my 87 rs turbo?? will it effect performance???fuel consumption???
give me your thoughts

S7EVO

No, the piston ones are ok if you have to fit one. Its all down to personal taste. Personally I would not bother.

mr_joe0606

iTrader: (1)

I have one on mine does not seem to effect performance. I love the sound off it but a lot off people on here hate them n say they are for chavs. Shouldent affect fuel consumption also alot off people say there car ran ruff with one on but tryed mine with/without and its the same.

Joe

andy130

iTrader: (2)

my rst sounded good with one, but my brothers escort cosworth is sounded shit,

J1mbo

iTrader: (1)

hate them my car sounds the tits without one, will have to get a video sounds nuts

m4tt274

iTrader: (2)

they serve a purpose, get one

J1mbo

iTrader: (1)

what purpose do they serve ?!

mr_joe0606

iTrader: (1)

Was waiting for that one lol here we go another big dump valve thread i can see coming lol

botters

iTrader: (2)

my rst and cossie lags slightly less with one fitted than without not enough to bother with tho allthough you will benifit having one as the turbo shaft doesnt stall between gearchanges with one fitted so is easier on the shaft

rs_traynor

my 2.1 ran better without one.but it had a group a dump valve onit and sounded fuckin great.

each to there own i suppose.

studabear

I've just gone efi and can't decide if i like the chatter or the dump valve best

J1mbo

iTrader: (1)

most peoples rst are on t3, i run 25 psi spike on my 55trim t3 and dont need a dump valve, it would not break a t3 shaft, there just isnt enough force from a small turbo like that

chatter

Csm

DanRSturbo

I ran a baily dump valve on mine until it got 18 psi and chattered so now I don't run one, had no issues with performance or fuel economy

Chopshop85

iTrader: (4)

Had one on my RST. Seemed to run ok until I removed it. The difference is amazing, the car would jolt forward when you let off the throttle and I honestly think the car had more lag with one fitted.

Rsmat

iTrader: (2)

i prefere the chatter imo

mr_joe0606

iTrader: (1)

Only way your going to find out is to fit one mate. As they say each to there own.

joe

mrjenrst

but would you not say it extends turbo life?

tbh as for sounds i'm proper torn, dump valve's sound sweet imo BUT....

chatter sounds mean and scares people

Paulo P

In a nutshell

If you have a dump valve I don't want to talk to you, if you don't I do

I'm picking up a new 2nd car at the weekend and it has a dump valve fitted and I already have the parts to remove it before the journey home

Bungle

to be fair i did on both my series 2's but only cos they were on mfi and didnt chatter loud enough to hear it, as said its personal preference, where abouts are you ill keep an eye out if ive not already spotted ya

stephenbatey

iTrader: (1)

Dump valves are gay as fuck

beamo76

thanks for all your opinions it sounds like i will have to try with and without althogh any sound that scares people is fine with me.
to the guy in sutton, im from rainworth.

Bungle

Ahh the home of "rays" lol sure ill see ya about especially if ya over this way

jammerrs

each time this comes up i will post this and say listen to the car and still say you want a dumpvalve

http://www.youtube.com/watch?v=bfVNIZ0RKik

Oranoco

They serve no purpose on these cars whatsoever. If you want to waste money on one for the noise then that's your own choice. From experience on the RST's I've worked with they do seem to run better without one.